Equipments

How to avoid cardboard stuck in automatic packaging line

The use of automatic packaging assembly line is more and more widely, but problem like machine jam caused by deficient cardboard has been plagued by the carton manufacturers. Some carton factories even lost customers, here are some suggestions given to improve:1.Cardboard Flatness Cardboard production must be flat, because it is easily to get stuck when the warped cardboard feeding into the assembly line, affecting the back of the cardboard into the machine, and then be damaged, resulting in the shutdown of the assembly line, cardboard loss is high. So we should pay attention to this point when putting cardboard into automatic packaging line.2. Crease in the surface of cardboardSince the forming of the carton depends on the suction cup, if the carton surface has creases, the suction cup will leak air, giving rise to bad carton formation, and machine jam. The crease is mainly caused by die tools and carrying, as well as cardboard warping. 3.The carton size should be accurateBecause the gap and crease point of the automatic packaging assembly line are set according to the standard size of the carton, a carton with large size deviation will probably have folding dislocation,and even lead to the machine stuck.4. Scoring line The scoring line should be made deep, in the packaging process, if the carton line is too shallow, it will cause poor folding, or wrong folding, resulting in bad carton formation.5. Flap size designIn the design of flap size, we should try to avoid overlap as far as possible, and a 2mm or so gap is the best, which plays a key role in the sealing of automatic packaging line.6.Carton joint size and fishtail Because the size of the carton joint and the fishtail directly affect the shape of the carton, bad shape of the carton appearance is not good-looking, or even cause stuck machine.7.Glue overflow on the joint of the cartonsIf the carton overflows with glue, the suction cup cannot even open the carton at all, directly causing the machine jam, so this problem is the most important attention of the carton manufacturers.

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ZYK-3000 to help save time and money in AAA heavy-duty packaging

ZYK-3000 Up & Down Machine is used for AAA Heavy Packaging Board, it can make board cut and line in one time. So it c can help producers save many time and people cost. As we all know, AAA Heavy Packaging Board is very thick so by normally machine is very hard to cut the board with nice outlook. So our company design ZYK-3000 Up & Down to solve this situation. Our design is working with Japan OJ together so in China only our company has this machine for AAA Heavy Packaging Board.

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Six points that single facer must be updated

With more and more packaging users tend to choose lightweight packaging, the huge micro-corrugated cardboard market is being focused by more and more carton enterprises.However, most of the carton enterprise's high weight cardboard production equipment can not directly complete the production of micro corrugated board, through the single facer updated is considered to be the best way to invest less with high efficiency.The following are the concrete methods of micro corrugated single facer updated: Four Advantages of Micro Corrugated Board Compared with solid core cardboard, micro corrugated has obvious advantages, so it is more and more popular among packaging users, especially in the fields of digital product packaging, all home appliance packaging, coetics packaging, medical equipment packaging, food packaging and so on.Advantages of micro corrugated:1. High compressive strength, more reliable protection products;2. Good buffering performance, good stacking strength, can replace the traditional buffering material;3. The printing effect is good, can offset printing beautiful pattern text;4. Good quality and light weight, the cost of packaging materials and transport costs of goods also declined. Six Key Points of the updated of Micro-Corrugated Single Facer Micro corrugated characteristics are: flute is more V-flute, flute top arc radius is aller, corrugated base paper due to the centrifugal force generated by the operation of corrugating rollrs and easily separated from the corrugated teeth affect the coating and bonding;Paper humidity, temperature, tension and speed of operation of the control of corrugated paper forming is particularly sensitive, Smaller arcs require a aller amount of glue to be precisely controlled.The updated of micro-corrugated single-side machine should be carried out according to the above characteristics. 1. New Corrugating Roll 1). For the design parameters of corrugated roof, we should be pay attention to the values of corrugated strength, angle of corrugated roof, circular arc of corrugated roof and valley, corrugated height, paper consumption rate, etc.2). corrugating roll structure design, according to the fixed shape of corrugated paper guide form (vacuum negative pressure external suction, vacuum negative pressure internal suction or cushion positive pressure) design air groove (vacuum internal suction air groove ring and herringbone type).3). According to the above structure of corrugating roll determined by the rigidity of the roll body, and each single machine different roller arrangement, design and calculate the corrugating roll height value. 2. Design, Manufacture or Modify the Mechani of different Paper Guide Forms (vacuum negative pressure external suction type, vacuum negative pressure internal suction type or air cushion positive pressure type) 1). Pay attention to negative pressure air cover or positive pressure sealing chamber.2).According to the specifications of corrugating roll to set the appropriate air volume and pressure.3). According to the above form to determine the number and location of copper sheet guide and air outlet. 3. Gluing System1). The new system of cots (paste roll) to be able to make a thinner rubber layer of a finer surface mesh and achieve less than 0.02 mm ofcircular beating precision.2).The new system of measuring roll (cots, squeegee, quantitative roll), to achieve less than 0.01 mm of circular beating precision.Ensure that the gluing gap between the gluing roller and the measuring roller is less than 0.08 mm and uniform.3).Adjustable paste blocking device should be equipped.4).Pneumatic device is optional, its role is to quickly follow up and out of the coating system.4. According to the actual structure, installation location and surrounding environment of the single-side machine, design the direction of suction or air supply pipeline, determine the position of high-pressure fan, and manufacture the suction and air supply pipeline system and high-pressure fan bracket.5. According to the specifications of corrugated roll and air volume and pressure, choose the matching high pressure fan and silencer.6. Design Electrical Control System. Micro corrugated packaging production is a system engineering, from the design of the flute shape, structure and precision of the corrugating roll, the form of a single machine, the operation precision of the all equipment in production line, to the choice of paper, paper tension control, temperature and humidity control, glue preparation and the gluing quantity control and cardboard quality control etc.,are all having different requirements of regular corrugated board such as flute A, B C.--If there is any Copyright Dispute, please Contact us to Delete

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How to Use Intelligence to Reduce the Loss of Paper Feeding and Paper Splicing?

1. Speed Control of Paper Splicing ProcessPaper speed control refers to the wet end control by monitoring the wet end order paper type length and the length of the base paper running, previously control single facer acceleration, increase the amount of bridge stack paper. When the splicer needs paper splicing, in the state of not reducing the speed of the whole line, reduce the paper splicing speed of the splicer, ensure the success rate of paper splicing, and reduce the loss of paper break. The speed control of paper splicing process can improve the efficiency, ensure the average speed of corrugator production, improve the quality of cardboard, and reduce the labor intensity of workers. Generally corrugated line equipped with production management software (ERP) has a paper connection process speed control .2. Synchronous Speed ControlSynchronous speed control, known as automatic cruise control, is the coordination and automatic matching of the speed of the wet end and the dry end equipment. The wet end control can automatically match the speed of gluing machine and single facer by monitoring the speed of each machine, including the speed of dry part and the amount of paper piled on the bridge, so as to ensure the uniform speed of the whole line. When changing the order speed of dry end, the wet end should be matched with it at the same time, and the amount of paper piled on the bridge should be strictly controlled. Overloading the bridge paper, cardboard is easy to produce warping, crease, affecting the quality of cardboard; Bridge stack paper amount is too all, easy to break the bridge cardboard, resulting in loss. If synchronous speed is well controlled, it can reduce the human error operation, and the labor intensity of workers.Generally corrugated line equipped with production management software (ERP) also has synchronous speed control .3 .Synchronous Order Change ControlSynchronous order replacement control, including bridge stack quantity control and measurement and synchronous paper control. Wet end control through monitoring and calculating the length of wet part replacement order and accurately measuring the amount of paper piled on the bridge, the paper splicing replacement order or synchronous paper splicing replacement order can be carried out to ensure the accuracy of replacement order and reduce the loss of productivity or less production of such orders.Overcapacity and less production are both losses. Less production has to be made up, which will reduce efficiency, increase labor intensity; Overcapacity will affect the consistency of the paper of the next order. So, how to ensure the accuracy of order replacement? As we all know, the distance between the crosscutting machine and the paper splicing points is constant. The only changes are the accuracy of bridge stack paper, the accuracy of different sizes of preheating cylinder envelope angle and the accuracy of paper amount at different positions of the paper free wheel.The Current Measurement Method of Bridge Paper Volume:1) photoelectric measurement, speed and wave size of pitting paper will affect the measurement accuracy, and the error is 2-3m;2) ink-jet or water-jet measurement is more accurate, with an error of about 0.5m; But ink-jet measurement is easy to block the nozzle, but water spray is better. 2 .Increase the encoder of preheating cylinder envelope angle to calculate the paper storage length of different sizes of preheating cylinder envelope angle.3. For the position of the paper splicing free wheel, the length of paper storage at different positions of the paper splicing free wheel can be calculated by adding an encoder. Generally corrugator line equipped with production management software (ERP) also has synchronous speed control , but many factories do not use this , nor the operators like to use. The main reason is that the operation results are not accurate, need to find the reasons from the bridge paper volume, preheating cylinder angle, the position of the free wheel of the paper feeder;Ink-jet measurement is easy to block the nozzle, resulting in damage, so we need to do a good job of cleaning and maintenance.4 .Base Paper Butt Roll Management and ControlThe base paper will more or less form a all butt roll after use. The all roll formed by the base paper after the use is generally placed on the edge of the cardboard line, which is convenient for on-site operators to use. However, the use of all paper rolls will increase the amount of labor of the field operators, resulting in the loss of the use process and the management of the base paper warehouse chaos, increase the frequency of paper in the field, paper management chaos and other phenomena, so as to increase the production cost.In traditional enterprises, butt roll really cannot be managed accurately. After the use of the base paper, the production staff does not know how many meters of the remaining base paper, the planner can not know the number of meters of butt roll, resulting in a large number of butt roll stored in the warehouse.Therefore, most of traditional enterprises are forced to use or carry out paper on site by on-site management. base paper butt roll management, that is, the base paper butt roll weight, length, specifications and other feedback.Intelligent butt roll management can automatically calculate the meters of each roll of paper through the equipment, and real-time monitoring of the number of meters used in the production process and the number of remaining meters.When the base paper is removed from the shelf, the label will be automatically printed. The label will display the remaining length of the base paper, weight, diameter and other data, so that the use of the base paper can be truly controlled.In this way, the list is more convenient, greatly reducing the production of all butt roll; At the same time in the production of orders when the first choice of butt roll, the use of all butt roll is more reasonable, the actual utilization rate of base paper statistics will be more accurate.Therefore, ERP base paper warehouse management can carry out dynamic management of the base paper, save the base paper butt roll weighing and loss in the process, improve the efficiency of the forklift operators, and reduce the cost at the same time. --If there is any Copyright Dispute, please Contact us to Delete

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Five Characteristics of Single Facer that the Carton Factory Must-Have in the Future

In corrugated board production process, single facer production of single-flute quality plays a key role in the carton compression, such as single facer in the production of single-flute process corrugated bar pressure control is too heavy, corrugated or inside paper will cause extrusion damage, resulting in cardboard edge pressure is insufficient, affecting product quality.Now more and more carton factories attach importance to the application of intelligent system, this article will discuss the advantages and characteristics of the intelligent system of single facer.7 Major Elements of single Control System Single facer is an important part of corrugated board, its main is to produce single-flute board.single facer control system is mainly:a. Control of Roll stand b. Preheater wrap angle controlc. Glue volume gap controld. Pressure roll controle. Slurry board controlf. single facer speed controlg. Wet-end controlThese are mainly operated by people in the traditional production process. In the process of operation, most people control and adjust according to their own experience and habits, so it is very easy to cause some problems .At the same time, it also enhances the labor intensity of workers. If equipped with intelligent control system, there is no need for personnel adjustment. Features and Benefits of Automatic Control System for Single Facer The speed control system realizes synchronous control of each unit, including order changing system, through the wet part control interface. The following is a brief introduction of the characteristics and benefits of the automatic control system of single facer:1.The Glue Volume Control TraditionIn general, the staff in the normal production process control glue quantity, are willing to increase the glue gap, so that it will not degumming, the disadvantage is that it will lead to cardboard soft, side pressure phenomenon.IntelligentIntelligent paste automatic control system is based on paper material and production speed, automatic adjustment of paste gap.In this way, there is no need for personnel adjustment, and production can be realized according to the standards set by the identification enterprise itself.2. Pressure Roll Control TraditionPressure roller control is mainly to affect the cardboard adhesion and paper damage, excessive pressure will lead to cardboard quality abnormalities, staff is difficult to identify the size of the pressure in the production.IntelligentIntelligent pressure roller automatic control system can automatically adjust the pressure roller clearance according to paper material and speed changes.Different speed pressure will be different, do not need personnel to adjust. 3. Slurry Plate ControlIntelligentthe pulp baffle plate automatically adjusts the width of the paste baffle plate according to the size of the paper door. 4. Preheater Wrap Angle TraditionThe preheater coating angle control is mainly to control the moisture content of the base paper and paper temperature, the conventional production of preheater adjustment is often not timely, resulting in unstable cardboard quality.IntelligentThe intelligent preheater wrap angle control is through the sensor and the paper material, as well as the production speed change carries on the automatic control.Paper temperature can be coated at different angles according to the material, and operated completely according to the company's regulations.5. Roll stand Control TraditionThe main of the base paper rack is to install the base paper, but the most complicated step in the operation of the base paper is the base paper in the middle, the base paper slow or uneven in the middle will cause a lot of production loss.IntelligentIntelligent base paper rack control to achieve automatic paper feeding, automatic alignment control, so as to avoid the occurrence of such problems. SummaryThrough automatic control, the single facer avoids the loss caused by human operation mistakes and experience misjudgment. At the same time, through automatic control, the quality of paperboard production can be stabilized and the efficiency can be improved. At the same time, the production loss and energy loss can be reduced. --If there is any Copyright Dispute, please Contact us to Delete

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The Cardboard Problems “ ALL SOLUTION”during Plum Rain Days

People who work in the carton factory is rather worried each year during the plum rain season. Not only to pay attention on cardboard and carton storage, but even to be careful to the cardboard production and printing. Otherwise customer complaints or returns easily caused .Today we will show you several key points on warehousing, cardboard production and cardboard printing to figure out the problems in the rainy season. How to Ensure Product Quality by Controlling the Storage Environment in Plum RainDays?The base paper, semi-finished products and finished-products all belong to paper products. Its remarkable feature is that it has strong moisture-absorbability and is very sensitive to air humidity.The moisture content of base paper, corrugated board or carton is easy to change with the difference of air humidity.If the warehouse is poorly ventilated and the environment is humid, it is more likely to cause moisture absorption and even moldy deterioration. In particular, those original paper with poor gluing and corrugated cartons made of low grade materials are more prone to moisture absorption and become soft, so the quality of products will be greatly reduced. Therefore, in the rainy season, it is important to prevent the warehouse from being moisture proof.When stacking products, the wood shelf shall be padded with a height not less than 750px from the ground and not too close to the wall, and the gap shall not be less than 1250px.Keep the warehouse clean, dry, well ventilated, temperature and humidity should be kept relatively stable, the general temperature should be controlled between 20 ℃ to 25 ℃, environment relative humidity should be in between 60% and 70%.If the warehouse temperature more than 38 ℃, ventilation cooling measures should be adopted, in order to prevent the products from being affected due to high temperature influence, and resulting in embrittlement metamorphi and reduce the strength of the finished product carton.How to Keep a Qualified Cardboard by Controlling the Cardboard Moisture in Rainy Days?During plum rain day, cardboard moisture began to significantly aggravate, a common problem is that cardboard physical indicators isqualified in production test, but when it comes to delivery, it failed to meet the standards, which is mainly reflected in the cardboard soft.The main reason is that the cardboard is affected by the environment moisture resulting in cardboard softening, carton compression value decreased. While the carton compression requirements are highly valued by large companies. So how to control the cardboard moisture in rainy daysto ensure the cardboard to meet physical indicators standards? Now let me introduce the specific measures from the perspective of production technology. Production Process Improvement1.The Misunderstandings in Controlling Cardboard Moisture In the production process, many enterprises believe that only keep a lower water content, can ensure the hardness and compression resistance of the cardboard.But in fact, when cardboard is particularly dry, it is easier to absorb water and even faster.From the perspective of technical, to keep a low moisture, we should first increase the paper heating area and temperature.When the temperature is too high and the heating area is large, it will destroy the fiber of the paper. If the fiber of the paper breaks, the precision of the paper will also be reduced, and the water will more easily penetrate into the paper.This is like a sponge,if you dry the sponge and put it in a damp environment, it will absorb moisture faster with a high absorption content.So in the production process during plum rain days, cardboard moisture should be controlled moderately, not to making a dry cardboard . 2. GluingIn the plum rain days, the first thing is to control the glue amount , gluingis equivalent to watering, the greater the amount of gluing, the higher the moisturecontent , resulting in a soft cardboard.In plum rain days, the solid content of glue should be increased , so as to increase the glue viscosity by increasing the solid content .After viscosity increases, the permeability of the glue increases and the amount of glue can be reduced, thus directly reducing the moisture.Improving the cardboard moisture, then the amount of borax, which has a dry effect,to ensure the cardboard moisture and drying. 3. Base paper In this season, we must strengthen corrugated board material structure, calculate the compressive strength of corrugated board which should meet those relevant physical cardboard and box according to the breaking index, ring compression strength, quantitative and other physical indicators of linerboard, inner linerboard , middle flute paper.Secondly, whether the physical properties of the base paper can meet the requirements, can not blindly reduce the weight of grams.It is priority to ensure the strength of cardboard in the plum rain days. There are plenty ofwaysfor improvement, such as the type of base paper, paper fiber and paper technology can help improve the physical indicators of cardboard, prevent cardboard moisture.The storage area of the cardboard is also very critical, and corresponding goals and improvement measures can be made according to their own situation.

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How to Reduce Corrugator Line Downtime and Wastage Rate

Abnormal downtime of Corrugated board production line will produce a large number of waste products, reducing production efficiency ,and increasing production costs. Therefore, we should find out the main reasons of corrugated production line down time from five aspects including: operator, machines, materials, regulations, links, and to solve them one by one. As for corrugated production line, in order to reduce production costs, we must ensure a reasonable production schedule, and try to process cartons together with the same quality for different customers. In order to effectively reduce production costs , carton size and other factors should be taken into account to minimize the waste generated by corrugated board production line 1. Scheduling the right production process In order to optimize the cardboard processing area, reduce unnecessary material waste, cardboard areas should be specifically calculated. Same paper quality and width of the base paper should be used when scheduling the production process, and from wide to narrow, so as to reduce the number of paper change, and order change.2. MaintenanceIn order to reduce the downtime rate, it is necessary for us to well maintenance corrugated production line, give full play to the performance of equipment. Improving production efficiency is an effective measure to reduce disguised production costs. Maintenance is carried out by operators and supervised by equipment and management personnel, in particular the bearing lubrication of mechanical equipment, to ensure equipment a good operation. Secondary maintenance should be conducted by equipment maintenance personnel and assisted by operators. We should focus on the leaking and equipment adjustment. Repair means the equipment department develop a detailed overhaul plan and go through it according to the existing problems in the process of use. Among them, daily maintenance is very important, with a low investment cost, but to achieve a good effect. On the one hand, it can extend the service life of equipment, maintaining a normal and ooth operation, on the other hand, reduce the probability of mechanical failure, and the non-inferior products, and meanwhile save manpower and material resources. Besides, we should pay attention on the reasonable inventory of equipment spare parts, which not only reduces the financial pressure, but also ensures a timely maintenance and production of equipment. --If there is any Copyright Dispute, please Contact us to Delete.

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The Impact of Environmental Humidity on Corrugated Board and Carton Strength

1. Corrugated Board Corrugated board is glued by box board and corrugated original paper, which is a composite board used to manufacture corrugated cardboard box. Raw materials of corrugated board are mostly plant fiber raw materials, although different in types, its chemical composition is mostly cellulose, hemi cellulose, lignin and a all amount of starch, pectin, resin, etc., and cellulose is the primary chemical composition of plant fiber, accounting for more than 50% of all kinds of paper raw materials. Cellulose is a polymer compound, generated by glucose polymerization, each glucose radical ring contains 3 alcohol hydroxyl groups, so that cellulose molecules and molecules have a strong hydrogen bond, cellulose is very easy to absorb water and swelling, the fiber internal cell wall structure becomes relaxed, cohesion decreases. This is the micro-reason that corrugated carton are sensitive to humidity changes .Therefore, the variety of environmental humidity will have a great impact on the performance of corrugated board. 2.Corrugated board strength under different humidity conditions (1) . Experimental EquipmentConstant temperature and humidity box, corrugated board cutting device, electronic compression tester, a test equipment used for corrugated board edge pressure strength and adhesion strength , piercing strength tester, used for corrugated board piercing strength .(2). Experimental MethodsThe experimental raw material is AB five-layer corrugated board provided by carton factory, with an average thickness of 8.00mm. Sampling is conducted according to GB/T 450-1979. Test specimen under temperature is 20 ℃, humidity is 20%, 40%, 60% and 80% respectively under the condition of 24 h, according to the GB/T 6546-1998 corrugated cardboard marginal pressure strength measurement, GB/T 6548-1998 corrugated cardboard gluing strength measurement and GB/T 2679.7-2005 board puncture strength measuring method.(3). Experimental ResultsTest the edge pressure strength, adhesion strength and puncture strength of corrugated board under different humidity conditions. The experimental data are shown in table 1. (4). Analysis of ResultFrom the data of table 1, it can be seen that the edge pressure strength and adhesive strength of corrugated board decrease with the increase of environmental humidity; When the relative humidity is 20% ~ 60%, the puncture strength increases with the increase of humidity, and decreases when the relative humidity exceeds 60%. When the relative humidity increased from 20% to 40%, the strength decreased significantly, and the relative humidity decreased by 16.4%. When the relative humidity increased from 60% to 80%, the adhesive strength decreased by 18.5%, and the puncture strength increased by 775% when the relative humidity increased from 20% to 40%. Environmental humidity on corrugated carton strength 1. Corrugated carton compression strength under different humidity conditionsCorrugated box compressive strength is mainly affected by corrugated board edge compression strength and adhesion strength. In different humidity conditions, corrugated board edge compression strength is obviously different, therefore, corrugated box compressive strength is also affected by environmental humidity. The compressive strength of corrugated cartons under different humidity conditions is shown in table 2. As shown from the data in table 2, the compressive strength of corrugated cartons decreases with the increase of environmental humidity. This is because as the rise of environmental humidity, the moisture content of paper board is increase, the cellulose in corrugated board became loose after absorption of moisture, and moisture absorption rate of linerboard and inner linerboard are different , resulting in different rate in the process of the pressure on the deformation, so the compressive strength of corrugated carton decreased as the rise of environmental humidity. Corrugated carton no matter in production or in the process of circulation will be affected by the environmental humidity. Therefore, reasonable control in the production, warehouse storage and environmental humidity during transportation, will have a positive impact on the use of corrugated board, carton. In addition, the production of corrugated board raw materials with moisture, moisture resistance agent has gradually become a developing direction to a new type corrugated cardboard box .

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How to Produce Corrugated Board to Meet Customer Requirements

Producing corrugated board to meet customer requirements has always been one of the goals pursued by carton enterprises. Based on the follow-up in the production process of corrugated board and some experience in dealing with customer complaints, the following will explain how to produce corrugated board to meet customer requirements.In order to avoid mass quality problems and reduce customer complaints, the following aspects of control and inspection should be go through:Project: Corrugated Board Forming Quality StandardCorrugated board without collapsed flute, crushing, extrusion defects.Test MethodCutting with art knife and confirm by visual inspection.ExampleIn the process of corrugated board production, sometimes because of the longitudinal cutting knife is not sharp enough, corrugated board edge will be crushed, which easily cause customer misunderstanding that consider it as collapsed flute. Of course, there are some malicious customers claimed it collapsed flute so as to get refund or discount, other than that, when encountered this kind of complains, corrugated board can be cut from the middle, compared with qualified corrugated board to persuade customer. But in order to meet customers demand, we should pay attention in the production process to prevent cardboard edge from being crushed. Project: Corrugated Board Thickness Quality standardC>3.5mm, B>2.5mm, E>1.1mm, BC>6mm, BE>3.6mm.Inspection MethodCorrugated board thickness measurement instrument is used to detect corrugated board thickness, It should be measured on both sides of the corrugated board and the three parts in the central, with the minimum part can not be less than the above size as the principle. Particularly to strengthen the control for individual customers with special thickness requirements .In order to facilitate the quality track of products in the future, each product should keep a copy of corrugated board project inspection table, because it is not easy to manage the sample of each piece of cardboard, corrugated board can be cut horizontally, we can stamp the flute shape of the corrugated board to the inspection table.Project: Warping DegreeQuality standardThough the national standard stipulates the scope of corrugated board warping, from the perspective of quality control, it is recommended to take zero warping as principle.Inspection method: Put corrugated board on a plane for visual measurement and size measurement.Special caseBecause of various factors in determining the flatness of corrugated board, warping often occurs as a result .Because corrugated board right after produced having a certain degree of heat, taking measures to correct the flatness of the cardboard at this time would be very effective, usually put new produced board of every 15 pieces of positive and negative to stack up, and then use heavy weights to correct. Here focused on the production control of single-face corrugated, because single-face corrugated in the production process is single-sided gluing, in the drying process, due to the paper shrinkage, it is very easy to cause warping , after reducing the steam pressure in the drying process, it has achieved a more obvious effect, and the flatness of corrugated board is good condition.In addition, in the process of offset printing lamination, warping is also very easy to appeared, here we attribute it to corrugated board warping together for discussion. In one stage, we used to think that this kind of bending can not avoid, and therefore not take it seriously. When encountered customer complaints in this regarding, we explained customers with corrugated board warping standard required in the national standard, but the customer does not accept it, in particular, those products packaged by automatic packaging machine, if one corrugated cardboard warping appeared, it will cause congestion of the whole production line, affecting the customer's production efficiency. Later, measures like adding water roller are not effective to solve this problem. Sometimes because of too much water added, board strength affected due to cardboard moisture increased.Finally, as management was strengthened, we put new produced corrugated board every 10 pieces of a stack like the cardboard produced by the host, the effect is better. Some of the long-term inventory of corrugated boxes scraped because of warping. After the test, applying water on the inner linerboard by hand, then positive and negative stacked, bundling, put heavy weight on it, finally solve the warping problem. Project: Corrugated Board Processing Dimension DeviationQuality StandardSize deviation of corrugated board required width + / - 1mm, length + / - 2mm.Test MethodMeasuring with measuring ruler. Some simple and fast method for a few corrugated board can be adopted to measure: take out the cardboard samples in parallel at same time, measure the size of one piece of cardboard with the measure gauge, the other pieces of cardboard will be rotated 180 degrees, then compared with the former cardboard to see its alignment before determine.Project: Corrugated Board Adhesion StrengthQuality StandardCorrugated board completely glued, in particular to pay attention to the paper edge degumming or false gluing .Inspection MethodMethods like tear corrugated board to inspection, press with fingers, visual measurement are widely used. It should be emphasized that, in order to prevent the false gluing from causing the whole batch of cardboard scrap, the whole piece of cardboard must be teared for the first piece of cardboard inspection.Project: Corrugated Board Flute LineQuality StandardNo broken bar, linear folding is available.Inspection MethodConfirmed by manually bending the flute line. Because PET bar line is relatively shallow, in the process of use, customers sometimes return the product simply because the shaking cover cannot be folded normally, so they have to manually fold the shaking cover for correction, which wastes a lot of manpower. Therefore, the inspection of PET bar line should be strengthened.Project: knife Cut Edge of Corrugated BoardQuality Standardcorrugated board without uneven edges, scrap, extrusion, damage and other defects.Inspection MethodVisual inspection to confirm .It needs to be noted that for food corrugated cartons, especially corrugated cartons for exporting food, it will be treated as foreign matters if paper scraps dropped into the packaging box, so the inspection of blade and clipped cut should be cared too much.Project: Paper Choosing Control of Corrugated BoardQuality standardStrictly choose the paper that customers required.In the production of corrugated board, it is frequently occured that some all order, its paper type is similar with that of the previous product, therefore the common practice in this case is to produce this all order with the paper that being used in the previous product.Such alternative paper is not accorded with the standard set by customers, so the paper stability cannot be guaranteed, once customer approved products of this alternative paper, yet actually production with the paper that customers required , the quality will be appeared differently, as a result, customers will go complaint due to the difference. Therefore, we should strictly follow the customers’requirements in paper production, any replacement of paper must be informed to customers in advance. Project: Moisture ControlQuality StandardMoisture control of corrugated board should be 10% plus or minus 2%The moisture content of base paper in production, preheating drying, raw materials and adhesives of the characteristics, drying and cooling process after paperboard gluing and circulation environment will affect the moisture content of corrugated board. Corrugated board water control methods are as follows:1. Strictly Control the Moisture Content of the Base Paper when Entering into FactoryAccording to the provisions of national standards, the water content of base paper in delivery is generally 9% ~ 12%.First of all, in the procurement of base paper, quality should be better controlled , the water content of base paper into the factory should be strictly inspected, suppliers are required to supply qualified base paper.In addition, a separate warehouse for base paper storage must be set up, room temperature generally in 15℃～20℃, relative humidity is usually 30% ~ 40%.Do not put in the open air, which not only cause changes of the moisture content of base paper, but the water content at both ends and the middle is not consistent.2 .Reasonably Control Temperature Temperature is one of the determinants of corrugated board quality. During the corrugated board production process, we need to reasonably control temperature, it can not only adjust the moisture content of the base paper, but also affect the temperature of the base paper, which make adhesive solidified in a reasonable time.There are many preheaters and drying board in corrugated board production line, they are used to adjust the moisture content of base paper and single-sided board, and make the adhesive solidified, to glue each layer of corrugated board.3 .Reasonably Control the Quality of Adhesive, the Size of Glue, Water Content, Thinness and ThicknessLarge adhesive water content, thin adhesive, fast penetration are resulting in high water content, and vice versa.When the amount of glue is large, so is the water content of cardboard, and vice versa. As a result, we need to make glue strictly in accordance with the adhesive water content, proportion and mixing time , as well asthe viscosity of the adhesive. --If there is Copyright Dispute about the content, please Contact us to Delete.

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How to Make Right Choice of Splicer?

As paper is the major cost of the corrugated board, so one has to place priority in paper roll inventory to be kept at optimum level in relation to production as well as paper prices and also ensure good paper quality.Naturally, splicer becomes an indispensable link to this end. In this way, what should we focus on purchasing splicer?One of the distinctive features of modern splicer is allowing shorter wet end runs. Equipped with digital tension control system and computer terminal, auto-splicer adopts AI design which is access to high-efficiency, reliability and high speed splicing. The return of investment is very high for splicer. It reduces paper waste, zero-end splice joint, splice at paper core, reduce downtime, increase production speed and increase quality of the board.Generally, there are three basic factors that modern splicer have, which require us to know during purchase:1. Ensure 100% splicing reliability at production speed– increase production speed;2. Ensure auto paper splicing according to the requirements of production management– reduces paper waste.3. Ensure stable paper tension - improve board qualityIn addition, there are some other additional s we should know:(1). Splicing at Paper core, that is, paper roll basically can be used up to the core, so to reduce waste.(2). Zero Tail splice joint to prevent loose bonding of board Therefore, we should take into the following aspects in purchasing paper splicing:1. Paper Splicing Speed is the First PriorityPaper splicing speed can be divided into two aspect: Above 250m/min or below 200m/min . Splicing above 250m/min require:(1). A longer paper accumulation for paper storage.(2). Double or triple dancer accumulation system(3). Higher paper tension precision control to avoid paper breakage or miss splice(4). Speed ratio between linerboard and corrugated medium should be 1:1.5, because the fluting take up factor.The splicer should be rated in accordance to the corrugator speed and thereby without slowing down or sacrificing production loss and as well as better board quality is achievable. Therefore, the speed of paper splicing has become a very important reference factor for the carton factory.2. Paper Tension range and paper tension controlDuring the production, to ensure the quality of corrugated board, the base paper output tension of paper splicing should be kept as constant as possible in the process of the operation of splicer and paper splicing. Today's splicer has the of tension sensor and control, can automatically detect and timely control the paper tension in corrugated production, so as to eliminate the paper breakage, fluting fracture and paper shrinkage.At present, in this context, the new double-head high-speed automatic splicer , adopted the latest paper splicing technology to provide accurate and reliable paper splicing through simple design. 3 . Interface with production control systemMajor factors affecting the setting of splicer include: paper grade, tensile strength, paper diameter, width and line speed. After calculating these factors and putting into the equations, it can be program to allow control the brakes of the roll stand, constantly adjust the brake setting to make it match with the changing diameter of the paper roll, keeping constant tension at various production speeds. In this way, during the production, the base paper roll can maintain appropriate tension control. Besides, by setting a certain parameter value, the PLC defines the length of the paper to reach, and counts its length and area according to the paper material, caliper and width. When it judges that the paper is used up, it splice and joint the paper at the same time, so as to realize zero paper-end connection and avoid unnecessary waste when splicing paper. A reputable reliable splicer manufacturer of delivery high specification V-generation high-speed automatic splicer is Fuma machinery. Fuma splicers incorporates zero -end splice joint, high speed splicing, 99.9% splice reliability, low paper grade splicing capabilities allows saving over 70% loss that caused by other splicer. 4 . To Learn how to control the connection of production control systemFactors affecting the setting of splicer include: paper grade, width and line speed. After solving these conditions, you can connect the paper control system for programming, set the brake of the base paper frame, and constantly adjust the brake setting to make it match with the changing diameter of the base paper reel. In this way, during the processing of each order, the base paper rack can maintain appropriate tension control. Besides, by setting a certain parameter value, the PCS defines the position of the paper to reach, and counts its length and area according to the paper material and width. When it judges that the paper is used up, it can cut off and connect paper at the same time, so as to realize zero paper-end connection and avoid unnecessary waste when connecting paper. An brand manufacturer of splicer is very good at manufacturing zero-end splicer, which a typical one is the v-generation Fuma high-speed automatic splicer produced by Fuma machinery. When the joint is corrugated or in the middle, most cases can be used. Save over 70% loss that caused by the splicer, in particular reduce the cardboard loss of long tail of paper in the corrugated machine that can not be glued. 5. To Notice the computing of paper storage length of free roller The paper storage of the dancer roller is to ensure the supplying of uninterrupted paper during splicing.This allows splicing at high speed with reducing production and ensure better board qualities. 6 . Reliability of paper splicing The reliability of splicing directly affects the production efficiency of corrugated board . So what are the factors that affect the success of splicer?Factors influencing the success rate of paper splicing mainly include the following two points:1. Parameter setting, such as the parameter matching between the free wheel and the tension wheel, the time of the cutting knife and the clamping plate, etc.2. The system program parameters setting of the tension control, which directly affects the tension of the base paper. --If there is Copyright Dispute about the content, please Contact us to Delete.

1693 0

Brief Analysis the Collapsed Flute of Corrugated Board

Under normal circumstances, corrugated board made by single corrugated machine rolling , its flute height and the number of flute per 300mm length should meet the national standards, flute shape should be neat and intact. If take flute valley as the origin of the coordinate system, the flute shape should be symmetrical to the left and right, like the alternating current sine wave, undulating oothly, and the flute height is equal and lossless. However, in the production practice, a variety of flute defects often encountered, and thus affect the quality of corrugated carton. Some defects are relatively regular, easy to analyze and adopt corresponding improvement measures, some are more difficult to exclude. as shown in figure 1, parts of collapsed flute ,which is difficult to eliminate, and costs more time to figure out. This article makes a brief analysis to seek the most effective way of exclude through discussion and communication. 1. Characteristics of Part of Collapsed Flute and its Impact on Product QualityCorrugated board local collapsed flute features: first, collapsed flute area changes greatly, as little as a few square centimeters to more than a thousand square centimeters. Second, collapsed flute is periodic, along the direction of the single-sided machine, collapsed flute appeared not exactly the same with periodicity; Third,collapsed flute area along the flute transverse appeared large in the middle while all on both ends; Fourth, there is obvious degumming in the collapsed area, and some thickness is only 30% of the corresponding standard thickness. In mass production. The defect of local collapsed flute will affect product quality. A large number of secondary waste produced, resulting in a substantial increase in manufacturing costs, and enterprises suffer a lot on that. This three, five or seven layers of corrugated cardboard, will inevitably produce waste that its degumming area is greater than the sum of national standard 20 cm squared / ㎡, marginal pressure strength is greatly reduced, the thickness of the cardboard lower than the national standard of printing logo,, and text fuzzy, which seriously impact on the overall quality of the carton products. 2. Analysis of the Main Causes of Part of Collapsed FluteThis collapsed flute defects often appear in the corrugated board produced by finger single-sided machine , the main reasons :(1) The gap between the radius of arc working parts of finger and the outer diameter of the lower corrugated roller is too large. Such as lower corrugated roller peak has been worn down to reduce the outside diameter, or because of repeated repair and grinding, etc., the gap is bound to be too large if still using the original finger.(2) Improper finger installation position, resulting in the radius of arc working parts of finger and lower corrugated roller outer diameter between the upper and lower clearance is not consistent. If the finger is not installed in place, the gap between the upper end or the lower end of the finger and the corrugated roller is too large, and too far away from the pressure roller , so that the working face does not play the of paper guide.(3) The finger has been partially worn out in use, and part of the working face cannot normally guide paper. From rational analysis, in the process of corrugated base paper in single-sided corrugated machine rolling, once surpass rolling tile stress points (corrugated roller gear meshing points up and down), it is influenced by the effects of the centrifugal force created by corrugated roller operation and emitting water pressure after baking, which can make the shaped corrugated paper roll out of corrugated roller, then mainly use finger tightly holding the shaped corrugated paper, making it tight attached in the surface of the lower corrugated roller to operation. If the radius of arc working parts of finger and the gap between the corrugated roller diameter is too large or inconsistency (except glue place), the paper will not be able to play a guiding , corrugated paper in the radial direction is in free state, away from the flute peak surface of corrugated roller, produce flute peak and valley dislocation, when the corrugated roller and the pressure roller are pressed in operation, the dislocation of the corrugated paper pressed by lower corrugated roller, making glued flute peak irregular gluing with inner linerboard (clip) , form a part of collapsed flute of single face corrugated board. Therefore, under the normal condition of tile roll, to solve the problem of part of collapsed flute of single face corrugated board, the key is to achieve reasonable and consistent clearance between the working parts of finger and the outer diameter of the corrugated roll. 3. Methods to Eliminating the Collapsed FluteFirst of all, it is necessary to measure or check whether the radius of arc working parts of finger is compatible with the outer diameter of the lower corrugated roller (see figure 2). If there is too much abnormal wear and tear in the finger, the finger should be replaced immediately. When the flute shape of lower corrugated roller reduced after repeated repair and grinding or flute peak of the lower corrugated roller significantly wore out, making outer diameter reduced , the radius of arc working parts of finger shall be reprocessed according to the reduction of the outer diameter of the lower corrugated roller. We realize the configuration of finger radius though practice. The radius of arc working parts = The actual outer diameter of lower corrugated roller divided by 2+(1.5~1.9) corrugated base paper thickness, among them, type E flute is 1.5 and type B flute is 1.6. 1.8 for type C flute and 1 .9 for type A flute.In order to facilitate wedge guiding, an additional 0.2 to 0.4mm can be added to the arc radius within the range of 10 ~ 20mm above the working parts of finger . The second is the position of finger installation should be appropriate, the gap between the radius of arc working parts of finger and the corrugated roller outer diameter should be controlled in accordance with the different corrugated type (1.5 ~ 1.9) corrugated base paper thickness, and to adjust to the upper and lower clearance consistent. The finger flat surface should be perpendicular to the lower corrugated roller axis. Another is to check if the position of both ends of the finger is appropriate, if the upper and lower ends can withstand, and observe whether its bearing corrugated is normal, if there is an error, it should be adjusted, grinding or re-manufacturing. Adhesives on corrugated roller, working parts of finger will also affect the normal guide paper, which should be cleaned in time. Apart from this , we need to eliminate the corrugated between the parallel, insufficient temperature, and high corrugated base paper moisture . --If there is Copyright Dispute about the content, please Contact us to Delete.

1193 0

Brief Analysis on Corrugated Board Warping

1. PrefaceCompared with the single machine, corrugated board production line has the advantages of high efficiency, high speed, good quality, but the disadvantage is prone to warping , which has brought many difficulties to the next procedure production, such as printing, slotting and scoring, corrugated board with serious warping cannot be produced in next procedure, resulting in product scrap, production cost increase, affecting the quality of the product. At present, corrugated board produced by corrugated board production line , has generally four types of warping as follows: 1). Upward Corrugated Board Warping2). Arched Upward Corrugated Board Warping3). Downward Corrugated Board Warping4). Arched Downward Corrugated Board Warping Note: The arrow in the figure shows the direction of corrugated board running when corrugated board line is working. 2、Factors that Affect Corrugated Board WarpingThe reasons that corrugated board warping produced by corrugated board production line are complex, and related to the quality of base paper, adhesive formula proportion, production workers . Now we will analyze the reasons based on these three aspects, for your reference. (1) .Effect of Base Paper Quality on Corrugated Board WarpingBase paper moisture content has a direct impact on upward and downward warping of corrugated board , we all know that , there is a law of paper expansion, that is, swelling when absorbing water, shrinking when losing water. In general, this rule much applied for paper horizontal than vertical. The transverse expansion and contraction of paper produced by the cylinder machine is much more obvious than that produced by the paper roll production machine. According to the test of our factory, the corrugated board line production paper, for every 1% of the moisture change, the base paper transverse will have 0.06% to 0.1% of the size change, this data can be used as a general reference, for 1600mm width of web base paper, in the corrugated board production line, the moisture change can reach 5% to 10%. The size change of the cardboard can reach 4.8-16mm. Therefore, in order to produce flat corrugated board, it is necessary to carefully control the paper water, to make linnerboard and inner linerboard water loss rate balance, so that corrugated board out of the machine, each side of the paper shrinkage or expansion is not as much as the other side. If you combine some linner board or inner linerboard that contain more water with the one that contain less water, the paper with more water will shrink more due to more water loss, therefore, warping will be caused. For this reason, correct match of linerboard and inner linerboard is really very important in order to produce flat corrugated board. Generally speaking, corrugated board production made of linerboard, inner linerboard that produced by the same manufacturer with same specifications, could make an ideal effect . (2) .Effect of Adhesive on Corrugated Board WarpingIf moisture content of linerboard and inner linerboard is equal, when heating the base paper on both sides, we must try to balance the water loss. When single-sided corrugated enter double-sided machine, adhesive on the peak of flute makes corrugated base paper moisture increased significantly, the linerboard is contact with the peak of flute of single corrugated after heating, at this point, lower the temperature of the double-sided machine hot plate (if necessary, shut down a set of steam), the water carried by the adhesive does not drive into the paper, then water loss of linerboard and inner linerboard can be balanced, production of corrugated board will not warp, if double machine hot plate temperature is higher, excess heating on linerboard, it will drive the moisture carried by the adhesive to the inner linerboard, then the degree of shrinkage of inner linerboard will be more than linerboard, resulting in a typical upward corrugated board warping . (3) .Effect of Production Workers' Operation on Corrugated Board Warping.Due to the moisture content of the base paper, adhesive has a direct impact on corrugated board warping, therefore, production workers, when operating the production line, should wellthe double-sided machine coating amount, production speed, steam pressure, as well as the tension of single-sided corrugated and linerboard, in terms of good gluing performance:1). Gluing volume on double-sided machine should not be too much, usually controlled in 15 - l7g / ㎡.(starch)2) Adhesive viscosity should not be too low, generally controlled in about 50 seconds (coated with 4 cups of determination)3) Steam pressure should not be too high to avoid corrugated board warping, generally corrugated board line production:Three-layer board steam pressure: 0.8-0.9mpaThe steam pressure of the five-layer board is 0.9 1MPa In addition, arched upward and downward warping mainly due to the single side corrugated tension is too big or linerboard tension is too big, production workers should immediately investigate when finding corrugated board arched upward and downward warping , make sure the tension of single-sided corrugated and linerboard into the pad is similar. 3、ConclusionCorrugated board warping is a comprehensive reflection of various factors, in order to produce flat corrugated board, various comprehensive factors should be considered, meanwhile some water spraying device in corrugated board line should be added to eliminate warping. --If there is Copyright Dispute about the content, please Contact us to Delete.

1183 0

The 8 Major Reasons of Corrugated Board Bending

Corrugated flatness is one of the important indexes in cardboard production, which is directly related to printing, die-cutting, and/or slotting corner cutting. Poor flatness, i.e. corrugated board a variety of arched, mechanical adsorption printing is easy to get stuck, resulting in scrap cardboard and stop cleaning to restart; In two-color printing or multi-color printing, it is easy to produce uneven inking, inaccurate color registration, color folding, and gap. Slotting machine size displacement, carton up and down swing cover overlap or do not fit; Die cutting feed will also produce stuck and size displacement and other defects, are likely to cause scrap the whole piece of cardboard or equipment damage so as to cleaning and restart. In short, the flatness of the cardboard will make it inconvenient to feed and cause secondary waste in the production process.In order to improve the flatness of corrugated board, ensure the product quality pass rate and normal production efficiency, we constantly test and analyze the carton production practice, and explore some improved methods.Here is a rough summary of the following, only for reference. 1. Shape of Poor Corrugated Board Flatness Poor flatness of the appearance of corrugated board is generally divided into three kinds: transverse arch, longitudinal arch and arbitrary arch. Transverse arch, it is to point to the arch that produces along corrugated direction. Longitudinal arch, is refers to the cardboard along the production line speed direction of the arch. arbitrary arch is that rises and falls in any direction. Linerboard surface arch is called a positive arch, inner linerboard surface arch is called a negative arch, linerboard and inner linerboard fluctuating respectively are called positive and negative arch. 2.The Main Reasons Affecting the Flatness of Cardboard1.Different types and grades of linerboard and inner linerboard. Kraft paper, imitation kraft paper, corrugated paper, tea board paper, high strength corrugated paper etc, and they are divided into A, B, C, D, E class. According to the paper on the material,generally,linerboard is better than inner linerboard.2.The main technical parameters of the linerboard and inner linerboard are different. From the perspective of carton performance or the user's cost reduction, the linerboard and inner linerboard are required to be different, usually:(I) The quantity is different. Some quantity of linerboard are larger than inner linerboard, some are aller.(2) Moisture content is different. Due to the differences of supplier, transportation inventory and other environmental humidity. Some moisture content of linerboard are larger than inner linerboard, some are aller.(3) The quantity and moisture content are both different. One is the quantity of linerboard is greater than inner linerboard. The moisture content of linerboard is greater than inner linerboard. Or moisture content of liner board is less than the inner linerboard. Second, the quantity of liner board is less than inner linerboard, the moisture content of linerboard is greater than inner linerboard, or the moisture content of linerboard is less than inner linerboard.3. The moisture content of the same batch of paper is different. The moisture content of one part of the paper is different from that of the other part, or the two ends of the paper, the outer edge and the inner core.4. Paper by the pre-heater (Wrap Angle) heating surface length selection and adjustment is not appropriate, or (Wrap Angle) heating surface length can not be arbitrarily adjusted. Former operation is improper leads to latter equipment limitation, resulting in affecting preheat drying effect.5. Do not use the vapor spray device correctly, or there is no spray device on the device. Do not add any moisture to the paper.6. The paper after the preheating of moisture loss time is insufficient, or the environment humidity, poor ventilation, improper speed of the production line.7. Single side corrugated machine, glue machine on the amount of improper, uneven, and cause uneven shrinkage rate of cardboard.8. Insufficient steam pressure, instability, steam trap and other accessories damage or pipe water is not clean, leading to the pre-heater can not work normally and steadily.

1312 1

Hot Point! The key Factors that Affecting the Speed of Corrugated Board Production

1. Inherent deficiency of equipmentDue to the lack of understanding of the performance structure of the equipment when purchasing, or the preference to purchase the equipment with immature design and manufacturing defects at a low price, the main performance is as follows:(1) Corrugated machine heat energy utilization rate is low or cannot meet the required temperature of 180 ℃ (Heat supply supporting defects, high heat loss that is, the design of external suction vacuum adsorption device is unreasonable, take away a certain amount of heat, heat supply and insufficient).(2) Corrugated roller: diameter less than 280mm. Although some equipment specifications indicate an economic speed of 300m/min, actual production cannot be achieved at all. Some corrugated roller merchants with its diameter 320mm or less also indicated that the economic speed can reach 180m/min, its essence is deceptive advertisement . (3) Pre-heater cylinder diameter is less than 600mm And there is no adjusting paper preheating angle device, can not fully preheat the base paper. (4) The hot plate of the dryer is too short (less than 9m). The double-sided machine coated with glue after the cardboard drying is not enough, adhesive gelatinization is bad, a large number of cardboard degummed too soft if speed up a little bit. (5) The cooling part is short and the ballast floating roller is scarce (spacing is more than 200mm), which is unfavorable to the water vapor emission, shaping and full adhesion of the board. 2.The quality of Raw Paper Fail to Meet the Production Requirements One-sided pursuit low cost, prefer to purchasing poor tention, extra moisture, no tenacity, dusty raw paper at a low price which can not meet the quality requirement. And it is quite obvious that what would happen to use such raw paper that even are not up to the national standards in production, let alone to expecting speed up. 3.Poor Quality of Starch and Improper Amount of Glue Failed to flexibly prepare adhesive fluid according to the paper's water permeability, environmental temperature and humidity .Or the use of thin deterioration and a large number of foam glue, or worry about cardboard adhesion and deliberately increase the amount of glue, while neglecting the speed of the full preheating of single-side corrugated board and dryer temperature and other factors, resulting in single-side corrugated board water absorption too variable soft, and dryer has to slow down in order to ensure the adhesion of cardboard and stiffness .According to the opinions of experts, corrugated board line running speed of more than 60m/min, the quality standard of the original paper is not lower than class B, as for the quality of glue solution is particularly important for the speed of cardboard line running. Only from the glue viscosity, starch water ratio perspective: high-speed running cardboard line (100m/min or more), the viscosity of 40-45s (coating 4 standard measurement), the ratio of starch and water to 1:6-1:7 is appropriate. In order to achieve the ideal speed ,the paper environment temperature and humidity and other comprehensive analysis should be adopted to make a flexible preparation of adhesive fluid. 4.Weak Technical Strength and Lack of Team Spirit There is a serious shortage of qualified technical personnel. The operators of each key process are not skilled enough in controlling the equipment, and the training and learning necessary for employees fail to attract the high attention of the enterprise. Though the technical personnel of each key process are good, the lack of good team consciousness and the spirit of collaboration will also affect the speed of cardboard box operation.The key to solve the above problems should be based on the enterprise's own conditions due to the factory, individual measures. If the enterprise is unable to carry on the equipment renewal in the near future, may consider the equipment transformation. But the first priority is to target equipment deficiency so as to be able to solve the problems, avoid by all means blind. Finally, it is worth paying attention to the "people-oriented" concept advocated by many enterprises. It is never easy to practice those words often talked by the business leaders like employees' technical level, quality and teamwork spirit. How to training talents, reserving talents, retaining talents, and maximize release their energy depend on the employment mechani of enterprises and the charm of enterprises, as well as the good space for the development of talents.

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How to Solve the Problem of Cardboard Bending?

1.Relevant Factors, Parameters Testing and Qualitative AnalysisHow to improve the flatness of cardboard. We have tested and qualitatively analyzed the physical properties, process equipment and other related factors and parameters of several commonly used paper.The test results show that the shrinkage rate is different with the paper, quantitative and moisture content. This is an important physical property of paper. The same material of linerboard and inner linerboard, cardboard easy to achieve a better flatness. On the contrary, it needs to take into account the changes of major factors and make appropriate adjustments. Good or bad flatness depends on the shrinkage rate of each layer of paper, to make the paperboard has a good flatness, the shrinkage rate of each layer of paper must be basically the same, the most important is the linerboard and inner linerboard. The shrinkage of the linerboard is less than the inner linerboard is positive arch, otherwise negative arch, the shrinkage of the linerboard and inner linerboard uneven is positive and negative arch. From the production line cardboard forming process, shrinkage size controlling can be divided into two stages. 1). Corrugating Forming Stage. That is, the raw paper feeding to the second glue coating before each process, is the key stage to control the shrinkage rate. According to the Characteristics of each layer of paper, steam pressure of each layer, the actual situation of the environment temperature and humidity, respectivelyto adjust good preheating temperature, heating surface (Angle) length, ventilation means of releasing moisture, steam spray, the gluing quantity, production speed and other technical parameters, making each layer of paper by appropriate effective process control to free shrinking, so as to keep shrinkage rate basically same. 2).Cardboard Forming Stage. That is, the second coating of glue to the next process of adhesion, drying and ironing. At this point, each layer of paper can’t free shrinking, each layer after being glued to the cardboard is restricted by each other, the adhesive point can be said to be the beginning of the cardboard arch. Choose and adjust the amount of glue, drying temperature, production line speed and other technical parameters, to minimize the shrinkage rate difference, and iron the cardboard produced arch. 2.Improved Methods on Board FlatnessImprovement ideas on corrugated board flatness : one is to require the supplier to provide the raw paper with qualified and stable quantitative, moisture content, transportation and loading and unloading to avoid rain. Store in the factory to maintain the basic constant environmental humidity. Second, the material of linerboard and inner linerboard should be the same, or quantitative, moisture content, grade is basically the same. Third, the paper with a large moisture content through the pre-heater heating surface (Angle) length increase, fan ventilation, increase the time of water loss, slow down the speed of the production line, paper with a all moisture content through the pre-heater (Angle) heating surface length decrease, natural ventilation, steam spray, speed up the production line. Four is the adhesive amount of each layer of paper to maintain the same, along the corrugated direction of the width of the whole width of the adhesive amount uniform moderate. Fifth, air pressure stability, traps and other pipe accessories to maintain normal .There are many factors that affect the flatness of corrugated board, flatness changes with the change of each factor, improvement must be adapted to local conditions, grasp the main contradiction and strive to solve. In terms of the common problems in producing single and double corrugated board, I would like to take some examples to discuss.A . The cardboard is arched horizontally. Known: linerboard is 250 g / ㎡ import A grade kraft paper, moisture content of 7.7%, (clip) tile paper is 150 g / ㎡ domestic high-strength corrugated paper. Moisture content of 10%, inner linerboard is 250 g / ㎡ B grade kraft paper, moisture content is 14%, atmospheric pressure of 1.1 MPa/cm squared, line speed of 60 m/min. Improved method: (1) Inner(clip)flute paper through the preh-eater (wrap Angle) heating surface length increased by 1 to 1.6, respectively. 0.5 to 1.1 times. (2) in (clip) tile paper in the production line bridge moving place using 0.9KW fan medium speed ventilation. Open Windows in the workshop for natural ventilation.(3) Small amount of steam spray evenly on liner board. The speed of the production line was reduced to 50m/min or so. The original transverse arch can disappear by adjusting the above selected parameters.B. Cardboard is arched length wise. Improved method: (1) Linerboard in front of the three-layer pre-heater to increase the motion resistance, increase the cylinder rotating brake force.(2)Inner linerboard in front of the three-layer pre-heater guide wheel, tensioning wheel and so on to reduce the movement resistance. Proper adjustment of the original longitudinal arch can disappear; C . Cardboard transverse negative arch. Known: Liner board is 200 g / ㎡ B grade kraft paper, moisture content is 13%, (clip) tile of 150 g / ㎡ high-strength corrugated paper, paper moisture content is 10%, inner linerboard with 200 g / ㎡ B grade imitation kraft paper, moisture content is 8%, atmospheric pressure 1.0 MPa/cm squared, line speed of 50 m/min. Improved method: (1) surface (clip) tile paper through the preheater heating surface length increased 0.9 to 1.4, 0.6 to 1.1 times.(2) Inner linerboard to reduce the pre-heater heating surface length or a all amount of steam spray.(3)The production line speed increased to about 60m/min. D .The cardboard is negatively arched longitudinally. Improved method: (1) Linerboard in front of the three-layer pre-heater to reduce the motion resistance, reduce the cylinder rotating braking force.(2)Inner(flute) linerboard in front of the three-layer heater guide wheel, tensioning wheel and so on to increase the movement resistance. E .Cardboard arched positive and negative. Because there are two kinds of positive and negative arch, the improved methods are varied, only the common transverse positive and negative arch is explained here. Known: Linerboard is 180 g / ㎡ A grade kraft paper, 7 to 12.6% moisture content, middle paper of 125 g / ㎡ high-strength corrugated paper, moisture content is 12%. Inner linerboard is 180 g / ㎡ in 8 to I4 % C grade kraft paper, moisture content, pressure is 1.1 MPa/cm squared, production speed 70 m/min, improved methods: (1) Use steam spray in transverse arch area .(2) Use steam spray in the transverse negative arch area .(3) the production line speed is reduced to about 60m/min.(4) adjust paper barrel 180 ° in the direction.In addition, there is a way to make up, that is use the cardboard with a larger arch just made from the production line , to put a pressure plate on a stack, usually about 10 pieces for a stack, and let cardboard in the semi-finished product storage process by positive and negative pressure of the external force. After a few hours (according to the ventilation and heat dissipation conditions of the workshop), a good flatness can be achieved. 3.Ideas and Suggestions1) . In the technical requirements of corrugated cardboard, there is the regulations of flatness."Corrugated cardboard has a ooth surface..." At present, as the level enhancement in the packaging industry automatic production, multial machine work and machine packing production line are being widely used, such as paperboard printing, die-cutting, slotting corner cutting, gluing, binding, strapping. Flatness requirements are getting higher and higher, those which can not meet the requirements of the cardboard will be automatically stopped or exit by machine packaging production line. We think corrugated board flatness regulation is necessary, it is convenient for operators and quality inspectors to work in accordance with the chapter inspection, and is conducive to the control of process quality. Corrugated flatness must be measured after placed in the horizontal without any external force, with the string height as the value. Flatness is divided into three levels.Grade 1 precision is suitable for the production of multi- machines such as cutting groove and angle of printing die, which is used for machines with high precision.Grade 2 precision is suitable for the production of die cutting machine in printing, used for high precision packaging cartons.Grade 3 precision is suitable for single-machine production of printing, slitting indentation, slotting and cutting angle, etc., and is used for packing cartons with general precision. 2) . Improve corrugated board production line equipment.(1) The preheater for each layer of paper tape, especially for linerboard and inner linerboard, should be able to make the length of the paper heating surface (wrapping angle) arbitrary adjustment;(2) There should be enough space for each paper to give off water after passing through the preheater, especially the insufficient space for the linerboard to give off water ;(3) electric fan ventilation device shall be installed in the area where moisture is distributed after each paper is preheated;(4) Each paper must be equipped with a steam spray device, and along the corrugated direction of any steam volume adjustment.

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Creep Characteristics of Multi-layered Corrugated Fibre Board Protective Cushions

Multi-layered corrugated fibreboard, has in recent years been gaining attention as a replacement for polymeric materials for protective packaging for environmental reasons. The properties of pre-compressed multi-layered corrugated fibreboard make it a sustainable replacement for poly-foam and polystyrene. Pre-compressed multilayered fibreboard cushions have most of the structural resistance and damping removed, they behave more like a soft spring. The performance of pre-compressed multi-layered corrugated fibreboard as a protective cushion is influenced by the amount of moisture present. The material stiffness is also dependent on the amount of moisture present. Static compression testing can be carried out to obtain stiffness data by measuring load versus controlled deflection, with stiffness being the load required to deflect a specified distance. The creep properties can be obtained by measuring deflection with a controlled force over a period of time, that is, creep is a measure of deflection per time under a constant force. Chapter 1 Introduction There have been many materials used in the protective packaging area over many decades, such as expanded polystyrene (EPS) and Poly-foams. These materials have been difficult to re-cycle and generally end up in landfill. Paper based materials tend to be more amenable to re-cycling, although more expensive to manufacture. Corrugated fibreboard has been used in the packaging industry for many years mainly as containers and boxes to pack goods for transportation. This material has however can also be used as protective cushions inside containers usually constructed in multiple layers Pre-compressed multi-layered corrugated fibreboard cushions, which is the essence of this study, consists of layers of virgin board glued together then compressed to remove the rigidity and to create a spring like structure. The virgin board usually consists of corrugated fibreboard sheet sandwiched between two plain sheets as shown in Figure 1.1 Figure The flute configuration can be of the following sizes as shown in Table 1-1 with the size shown in yellow being a commonly used size in cushioning. It is felt that the pre-compressed corrugated fibreboard is a good substitute for polymeric materials such as poly-foams and EPS which are commonly used in the packaging industry. As with all cushioning materials it is necessary to determine the cushioning characteristics prior to using as a protective cushion. Within the dynamics and vibrations research group at Victoria University and elsewhere much research has been carried out into the application of virgin and precompressed multi-layered corrugated fibreboard cushions for protective packaging in storage and delivery containers boxes. The main focus has been on the shock attenuation or cushioning characteristics, methods to produce cushion curves using simple compression data and modeling of cushion dynamic behavior and producing records such as impact failure as shown in Figure 1.2.Another dimension to cushion testing is to take into account that when packaged products are in stored in boxes for longer lengths of time, such as in storage, there is a tendency for protective cushions to experience creep or time dependent deformation. The protective cushions lose thickness that leads to a slackening off to the interface between the cushion and the packaged product. This would create direct deterioration of the cushioning effect or loss of support during impact or vibration, and subsequently lead to product damage. One method to overcome this is to allow more cushioning, but to establish how much, requires some knowledge of the creep behaviour. 4 As this product is a paper product there is also the question of humidity affects the creep performance. There has been work produced on the creep behaviour of corrugated fibreboard storage boxes particularly with respect to the effect of humidity. However there seems to be little work on the creep behaviour of corrugated fibreboard protective cushions, especially when the cushions are pre-compressed. There is then a need to study Creep Behaviour of Pre-compressed Corrugated Fibreboard protective cushions. The pre-compression process reveals knowledge of the static compression characteristics of the material which is an adjunct to the creep process. The work for this study is described in the following chapters: The literature review in chapter two talks discusses static compression and creep in corrugated fibreboard and proposes the methodology for this study. Chapter three describes static compression and creep testing procedure. Chapter four provides the analysis of the experimental results and modelling processes. Chapter five contains discussion and main conclusions. Content source: (Study of Creep Characteristics of Multi-layered Corrugated Fibre Board Protective Cushions) Hussein Mahanny Shehab Engineer 2011

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How to plan corrugated carton production factory –Waste paper & wastewater treatment

Outline of Manufacturing Process and Materials UtilizedThe manufacture of corrugated packaging can be roughly classified into two processes: the containerboard combining process, which glues one or more sheets of fluted corrugating medium to one or more flat facings of linerboard; and the box manufacturing process, which is used to assemble the corrugated sheets into boxes. Figure 1 depicts the typical manufacturing process flow and the auxiliary facilities that are used at a corrugated packaging plant.Figure 1 Overview of Manufacturing Process Flow for Corrugated Packaging Wastewater Treatment Process(1) Discharge Routes for Wastewater and WastesAlthough actual discharge routes for wastewater and wastes from the containerboard combining process (corrugator) and the box-manufacturing process (printing / gluing processes only) will vary, depending upon the facilities and geographic conditions available to each particular corrugated packaging manufacturer (discharge into rivers or sewers), a typical flow is shown in Figure 5.Figure 5 Discharge Routes for Wastewater and Wastes * “Glue balls” are lumps of gelatinized combining adhesive within the glue vat, caused by excessive ambient heat. (2) Wastewater Treatment MethodsThe wastewater generated by plants that manufacture corrugated packaging can be classified into the following categories: household wastewater /domestic wastewater; rainwater; wastewater from clean up of combining adhesive (corrugator and glue making machine) and wastewater from cleanup of printing ink and joint adhesive. Household wastewater / domestic wastewater and wastewater from processes containing substances designated by the PRTR system, except for rainwater, are generally treated through a combination of several methods listed in Table 3.Table 3 Types of Wastewater Treatment Methods2. Class I Designated Chemical Substances Contained within Materials andEnergies Utilized in the Corrugated Packaging IndustryTable 4 indicates the major Class I Designated Chemical Substances contained in the materials and energies utilized for the manufacture of corrugated packaging, which have been investigated by the member companies of Japan Corrugated Case Association (JCCA).Table 4 Major Class I Designated Chemical Substances Contained in Materials and 3. Corresponding Class I Designated Chemical SubstancesThe list of Class I Designated Chemical Substances shown in Table 5, below, was prepared from the general usage examples obtained as a result of an investigation conducted at 121 of JCCA member companies’ plants. These chemical substances comprise 1% or greater of the particular product, which itself is handled in annual quantities that may exceed 1 ton. In addition, these chemical substances may result in the release of dioxins from designated facilities, as stipulated by the Law Concerning Special Measures against Dioxins(for corrugated packaging plants, such designated facilities would be all incinerators). For chemical substances other than those listed in the table, the MSDS should be obtained, in order to confirm whether such chemical substances are subject to reporting. Table 5 List of Corresponding Class I Designated Chemical SubstancesIn addition, there are certain types of flexo inks (currently, flexo inks are utilized most commonly) that contain approximately 2% of the Class I Designated Chemical Substances shown in the aforementioned Table 4. However, as the quantities of these particular inks used (10 kg and less) are far less than the quantities specified by the law (1 t or more), these flexo inks are not subject to reporting. Quick drying inks have been designated as products that are subject to reporting. Regardless of the particular type or color of these inks, they all contain a relatively large percentage of ethylene glycol, which is a Class I Designated Chemical Substance, as a primary ingredient in the solvent. In addition, there is a strong possibility that the annual quantities handled will exceed 1 ton. --If there is Copyright Dispute about the content, please Contact us to Delete.

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How to plan corrugated carton production factory – Corrugated cardboard produce

Outline of Manufacturing Process and Materials UtilizedThe manufacture of corrugated packaging can be roughly classified into two processes: the containerboard combining process, which glues one or more sheets of fluted corrugating medium to one or more flat facings of linerboard; and the box manufacturing process, which is used to assemble the corrugated sheets into boxes. Figure 1 depicts the typical manufacturing process flow and the auxiliary facilities that are used at a corrugated packaging plant. Figure 1 Overview of Manufacturing Process Flow for Corrugated] Packaging*1 Containerboard combining process*2 Containerboard*3Adhesives for combining 1) Primary Materials and Energies Utilized in the Corrugated Packaging Industry(1) Containerboard (linerboard, corrugating medium)(2) Adhesives for combining (starch = corn starch, caustic soda, borax / boricacid)(3) Printing ink (flexo ink, quick drying ink, OP varnish)(4) Joint adhesives (vinyl acetate emulsion adhesives)(5) Energy sources (electricity, gas / heavy oil / kerosene, water)(6) De-oxygenating agent for boiler, neutralizer(7) Bundling materials (PP bands, stretch film, baling twine, etc.)(8) Other materials (water treatment agents, lubricating oils, paints) 2) Details of Primary Materials Utilized for the Manufacture of Corrugated Board Corrugated Boxes ContainerboardIn general, paper that has a greater basis weight and thickness than that of regular paper is collectively referred to as paperboard. Among all the types of paperboard, those that are utilized particularly for the manufacture of corrugated packaging are referred to as containerboard. This containerboard is classified, as shown in Table 1, in accordance with the statistics and classifications specified by the Ministry of Economy, Trade and Industry - Classification Table for Paperboard Types. Table 1 Extracted from the Classification Table for Paperboard Types1:Linerboard for outer packing is regulated under JIS P 3902. However, there are no classifications that differentiate between kraft linerboard and jute linerboard. Linerboard is only classified by strength, into classes AA, A, Band C.2：Corrugating medium are regulated under JIS P 3904. However, there are no classifications that differentiate between pulp coreag.The adhesive for combining is a bonding agent used to adhere the wave-shaped flutes to the front and back linerboard. The main ingredient of this type of glue is starch. As described within this document, caustic soda is used to reduce the gelatinizing temperature of the starch. Either borax or boric acid is used to add viscosity and to increase adhesion at the time of initial application. Figure 2 Typical Adhesives for Combining Ingredients and Glue Manufacture Process Flow 3) Manufacturing Processes(1) Containerboard combining Process ― The process by which corrugated boards are made, using a machine called a corrugatorsA corrugating medium is pressed into a wave-like shape (flutes), then is glued to both a top sheet and a bottom sheet of linerboard. The corrugated boards are then dried, scored, cut and loaded.--If there is Copyright Dispute about the content, please Contact us to Delete.

1941 0

Treatment of Contaminants - Toluene

Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / TransferredIn general, the quantities of corresponding Class I Designated Chemical Substances released and transferred can be calculated using either the actual values or the measured values, as obtained by each company. However, in the event that these numeric values are difficult to determine, then it is acceptable to utilize either: industry average values, nominal values or the standard values set by machine manufacturers (the numeric values in red font), as listed in Table 6.(The particular values utilized must be clearly stated.)Table 6 Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / Transferred Note: Actual quantities for each company must be utilized for the following: quantities of wastewater produced from other processes (m3 / day); quantities of materials handled (such as adhesives and ink); number of days of operation; and number of print color change operations. Toluene Figure 8 Flows for Toluene Released The flow of toluene released from joint adhesives used during the conversion process is the same as the flow of xylene described in section 2, above). Annual quantity handled Annual quantity released or transferred [Calculation Procedures]①Annual quantity of toluene handled=②Quantity released to atmosphere = Annual quantity of joint adhesive handled × Toluene content[Calculation Examples]<Input Data for Calculations>Annual quantity of joint adhesive handled: 22,000 kg / yearToluene content in joint adhesive: 5%<Calculation Results>①Annual quantity of toluene handled = 22,000 kg / year × 0.05 = 1,100 kg / year=1.1 t / year②Quantity of toluene released to atmosphere = 22,000 kg / year × 0.05= 1,100 kg / year = 1.1 t / year --If there is Copyright Dispute about the content, please Contact us to Delete.

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Treatment of Contaminants - Xylene

Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / TransferredIn general, the quantities of corresponding Class I Designated Chemical Substances released and transferred can be calculated using either the actual values or the measured values, as obtained by each company. However, in the event that these numeric values are difficult to determine, then it is acceptable to utilize either: industry average values, nominal values or the standard values set by machine manufacturers (the numeric values in red font), as listed in Table 6.(The particular values utilized must be clearly stated.)Table 6 Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / Transferred Note: Actual quantities for each company must be utilized for the following: quantities of wastewater produced from other processes (m3 / day); quantities of materials handled (such as adhesives and ink); number of days of operation; and number of print color change operations. Xylene Shown below are the flows for the xylene released. Xylene is contained in the joint adhesives used during the conversion process and is also used as an additive for boiler fuel. The quantity released can be calculated by following the procedures described below. Figure 7 Flows for Xylene Released [Calculation Procedures] Annual quantity handled Annual quantity released or transferred ①Annual quantity of xylene handled＝ annual quantity of kerosene handled × density × xylene content ＋ annual quantity of joint adhesive handled × xylene contentNote: 99.5% of xylene contained in kerosene is decomposed through combustion.The entire quantity of xylene contained in joint adhesives for combining is released to the atmosphere during the drying process.②Quantity of xylene released to atmosphere = Quantity of xylene in kerosene ×+ non-decomposition rate + annual quantity of joint adhesives handled ×xylene content[Calculation Examples]<Input Data for Calculations> <Calculation Results>①Annual quantity of xylene handled = 9,240* + 22,000 × 0.05 = 10,340 kg②Quantity of xylene released to atmosphere = 9,240 × 0.005 + 22,000 kg / year× 0.05= 1,146 kg / year--If there is Copyright Dispute about the content, please Contact us to Delete.

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Treatment of Contaminants - Ethylene Glycol

Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / TransferredIn general, the quantities of corresponding Class I Designated ChemicalSubstances released and transferred can be calculated using either the actualvalues or the measured values, as obtained by each company. However, in theevent that these numeric values are difficult to determine, then it is acceptable toutilize either: industry average values, nominal values or the standard values setby machine manufacturers (the numeric values in red font), as listed in Table 6.(The particular values utilized must be clearly stated.)Table 6 Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / Transferred Note: Actual quantities for each company must be utilized for the following: quantities of wastewater produced from other processes (m3 / day); quantities of materials handled (such as adhesives and ink); number of days of operation; and number of print color change operations.Ethylene Glycol Shown below are the flows for the release and transfer of ethylene glycol.Ethylene glycol is contained in the quick drying inks used during the conversion process and is present in wastewater subject to treatment. The quantities both released and transferred can be calculated by following the procedures described below.Figure 10 Flows for Ethylene Glycol Released and Transferred The methods used for the cleaning and final treatment of printers that utilize quick drying inks will vary, depending upon the characteristics of the inks and the specifications of each machine. Therefore, the various treatment methods are classified as shown in (1) - (3), below.(1) Wipe-off Method: used for conventional roll transfer type printers and conventional spray type printers. After excess ink has been wiped off the printers with waste cloths, the materials used for cleaning are disposed of as industrial waste.(2) Industrial Waste Treatment Method for Waste Liquids: the waste inks resulting from color change processes and the wastewater from ink clean up are stored indrums, then disposed of as industrial waste, as is.(3) Wastewater Treatment Method: the printing process utilizes washable quick drying inks. After wastewater is treated by a standard wastewater treatments ystem, the wastewater is separated into liquid wastewater and solid waste. Inthe event that an activated sludge treatment is performed as a tertiary treatment,then the wastewater will be fully broken down into water and carbon dioxide.Therefore, the quantity of ethylene glycol released will be "0". Annual quantity handled Annual quantity released or transferred [Calculation Procedures]①Quantity of ethylene glycol handled = annual quantity of quick drying inkhandled × ethylene glycol content②Wipe-off Method: quantity of ethylene glycol transferred in waste= quantity of waste per color / cleaning operation × number of daily color changes×number of days of operation③Industrial Waste Treatment Method for Waste Liquids: quantity of ethyleneglycol transferred in waste = quantity of waste per color / cleaning operation× number of daily color changes× number of days of operation④Wastewater Treatment Method: quantity of ethylene glycol released towastewater = quantity of waste per color / cleaning operation × number ofdaily color changes × number of days of operation [Calculation Examples]<Input Data for Calculations>Note: Figures in red font represent industry average values / nominal values- Quantity of ink handled: 6,000 kg / year (wipe-off type: 3,500 kg / year)- Ethylene glycol content: 30%- Quantity of ink per disposal, per color: ② 350 g / disposal; ③ 50 g / disposal;④ 126 g / disposal- Number of color changes: 40 changes / day (wipe-off type: 20 changes / day)- Number of days of operation: 20 days × 12 months = 240 days / year<Calculation Results>①Quantity of ethylene glycol handled = 6,000 kg / year × 0.3 (3,500× 0.3) = 1,800 kg / year (1,050 kg / year)②Wipe-off Method: quantity of ethylene glycol transferred in waste = (350 /1,000 ) × 0.3 × 20 × 20 × 12 = 504 kg / year③Industrial Waste Treatment Method for Waste Liquids: quantity of ethyleneglycol transferred in waste = (50 / 1,000 ) × 0.3 × 40 × 20 × 12 = 144kg /year④Wastewater Treatment Method: quantity of ethylene glycol released towastewater = (126 / 1,000 ) × 0.3 × 40 × 20 × 12 = 363 kg /yearNote: In the event that the wastewater from procedure ④, above, receives tertiary treatment using an activated sludge treatment method, then complete decomposition would occur. Therefore, the quantity of ethylene glycolreleased would be determined as "0". If the wastewater is not treated using an activated sludge treatment method, then a slight amount of ethylene glycolwill be transferred along with the residual water, to the dehydrated waste(although most of the ethylene glycol is released to the wastewater itself).This miniscule quantity of transferred ethylene glycol is difficult to measureand is estimated as being only a few % of the entire quantity released.Therefore, for the purposes of the calculations above, the entire quantity ofethylene glycol is considered as being released to the wastewater, with none ofit being transferred to the dehydrated waste. --If there is Copyright Dispute about the content, please Contact us to Delete.

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Treatment of Contaminants - Dioxins

Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / TransferredIn general, the quantities of corresponding Class I Designated Chemical Substances released and transferred can be calculated using either the actual values or the measured values, as obtained by each company. However, in the event that these numeric values are difficult to determine, then it is acceptable to utilize either: industry average values, nominal values or the standard values set by machine manufacturers (the numeric values in red font), as listed in Table 6.(The particular values utilized must be clearly stated.)Table 6 Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / TransferredNote: Actual quantities for each company must be utilized for the following: quantities of wastewater produced from other processes (m3 / day); quantities of materials handled (such as adhesives and ink); number of days of operation;and number of print color change operations. Dioxins[Calculation Procedures]①Annual quantity of dioxins in exhaust gases released= quantity of exhaust gases* × measured quantity of dioxins in exhaust gases ×number of daily hours operation × number of days operation②Annual quantity of dioxins in incinerated ashes transferred= quantity of incinerated ashes released × measured quantity of dioxins inincinerated ashes[Calculation Examples]<Input Data for Calculations>*TEQ: As a variety of different dioxins are produced, the quantity of dioxins has beenconverted tothetoxicequivalencespecifiedby2,3,7,8tetrachlorinateddibenzo-para-dioxin.<Calculation Results>①Annual quantity of dioxins in exhaust gases released= 1,180×2.0×10-6 × 8 × 20 × 12 = 4.53mg-TEQ / year②Annual quantity of dioxins in exhaust gases released= 21 × 10 6 × 1.1 × 10-6 = 23.1 mg － TEQ / year--If there is Copyright Dispute about the content, please Contact us to Delete.

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Treatment of Contaminants - Borax

Fundamental Data for Calculating the Quantities of Corresponding Class IDesignated Chemical Substances Released / TransferredIn general, the quantities of corresponding Class I Designated Chemical Substances released and transferred can be calculated using either the actual values or the measured values, as obtained by each company. However, in the event that these numeric values are difficult to determine, then it is acceptable to utilize either: industry average values, nominal values or the standard values set by machine manufacturers (the numeric values in red font), as listed in Table 6.(The particular values utilized must be clearly stated.) Table 6 Fundamental Data for Calculating the Quantities of Corresponding Note: Actual quantities for each company must be utilized for the following: quantities of wastewater produced from other processes (m3 / day); quantities of materials handled (such as adhesives and ink); number of days of operation;and number of print color change operations.Borax*1 : Borax shall be calculated using Na2B4O7?10H2O (boron content: 11.3%) asstandard. When utilizing either Na2B4O7?5H2O (boron content: 14.8%) or boric acidH3BO3 (boron content: 17.5%), conversion to borax Na2B4O7?10H2O (boron content: 11.3%) must be performed, in accordance with the formulae shown below. Na2B4O7?10H2O= (14.8 / 11.3) ×Na2B4O7?5H2O (borax)Na2B4O7?10H2O= (17.5 / 11.3) ×H3BO3(boric acid) Example: If 4 tons of boric acid (H3BO3) and 5 tons of borax have been handled, then what is the total quantity of boron handled? Conversion of boric acid to borax: Na2B4O7?10H2O = (17.5 / 11.3) ×H3BO3(boric acid)= 1.55 × 4t = 6.2t Thus, 4 tons of boric acid is equivalent to 6.2 tons of borax. Therefore; after conversion, the quantity of borax equivalent is calculated as: 5t + 6.2t = 11.2 tand the total quantity of boron handled is calculated as: 11.2t × 0.113 = 1.266t= 1,266 kg. *2: Regarding Boron Content in Wastewater after Wastewater Treatment has beenPerformed (reference)- The effluent standard specified by the Water Pollution Control Law: boron content in wastewater shall be no more than 10mg/l.- Example of boron measurement at a corrugated packaging manufacturer (total quantity of wastewater discharged during manufacturing processes: 10m3/day):Over the weekend, the wastewater derived from the cleaning of glue vats was13combined with wastewater derived from the clean up of ink. Flocculants and similar coagulating agents were then added to this mixture at the beginning of he subsequent week. Lastly, the sludge within this mixture was separated out through pressure floatation and filter press techniques. The wastewater was analyzed and the boron content was found to range between 1.8-7.8mg/l, with an average concentration of 4.4 mg/l.- Normally, the wastewater derived from the clean up of ink is discharged every time that the ink color is changed, during printer operation. However, glue vat sand other parts of the corrugator are cleaned no more than once a day, even at factories that perform frequent cleaning. Factories that do not perform frequent cleaning may clean these parts only once each week. During these thorough cleaning operations, overall boron concentrations are greater due to the discharge of wastewater that contains laminating glue. Therefore, this example of actual quantities measured shows a situation in which wastewater containing a significant amount of laminating glue was discharged. Therefore, with consideration for previous examples of actual measured concentrations, it is estimated that annual average boron concentrations will actually be approximately 1-2mg / l, which is less than one-half of the average concentration measured in this example.- Precautions Prior to SamplingThe actual concentration of boron can vary greatly, depending upon the adhesives for combining content of the wastewater derived from clean up operations. Therefore, it is desirable to preset the effluent condition standards, then to perform 2 – 3 point sampling in chronological order. *3: Regarding the Decomposition Rate of Xylene in Combustion Equipment (such as boilers)- The process of combustion will cause 99.5% of the xylene present to decompose into water and carbon dioxide. The remaining 0.5% is noted composed and is released unchanged to atmosphere. (Cited from page 241 inthe "Manual for Estimating Quantities of Released and Transferred Chemical Substances" prepared by the Ministry of Economy, Trade and Industry and the Ministry of the Environment, in March 2001.)Note: Actual quantities for each company must be utilized for items that are noted scribed, including: quantities of wastewater produced from other processes(m3/day); quantities of materials handled (such as adhesives and ink); number of days of operation; and number of print color change operations.number of days of operation; and number of print color change operations. 1) Boron and its compounds - Figure 6 depicts the flows involved with the release and transfer of boron contained within adhesives for combining, during the processes of glue making, combining and wastewater treatment. The quantities of boron released and transferred can be calculated by following the procedures described below.- The borax utilized in these processes (i.e., boron and its compounds) reacts with caustic soda to produce sodium borate, which itself reacts with starch to form borate ester. As well, when boric acid is utilized, it reacts with caustic soda to produce borax. Thus, boron is transformed into a variety of chemical compounds, depending upon the processes in which it is utilized. However, for calculating the quantities released and transferred, the overall quantity should be understood in terms of the mass of elemental boron.- With respect to boron, the amount that will eventually be discharged into raw wastewater is equivalent to the difference between the quantity handled and the quantity shipped out in the form of finished product and corrugated waste. The wastewater treatment process then separates the raw wastewater into wastewater (treated water) and waste. Measurements are then performed to calculate the quantity of boron in the wastewater (treated water). The quantity of boron transferred in waste is equivalent to the difference between the quantity of boron discharged into raw wastewater and the quantity of boron measured in the wastewater (treated water). Figure 6 Boron Release / Transfer Flows *1 Containerboard combining process*2 Containerboard*3Adhesives forcombining [Calculation Procedures] Annual quantity handled Annual quantity released and transferred ①Annual quantity of boron handled = annual quantity of borax handled ×boron content②Quantity of boron in the product = production volume of corrugated boards×quantity of adhesives for combining applied × borax content of adhesives for combining × boron content of borax③Quantity of boron in corrugated waste = quantity of corrugated waste sold ÷average basis weight * × quantity of adhesives for combining applied ×borax content of adhesives for combining × boron content of borax④Quantity of boron in raw wastewater (untreated) released to the wastewater treatment process = ①－(②+③+⑦)⑤Quantity of boron released to bodies of water = quantity of boron in wastewater released from the wastewater treatment process = measured quantity × quantity of water released.⑥Quantity of boron in the sludge discharged from the wastewater treatment process = ④－⑤.⑦Quantity of boron in glue balls = quantity of glue balls produced× solids content × number of days of operation× borax content of adhesives for combining × boron content of borax⑧Quantity of boron transferred in waste =⑥+⑦ 1) Boron and its compounds - Figure 6 depicts the flows involved with the release and transfer of boron contained within adhesives for combining, during the processes of glue making, combining and wastewater treatment. The quantities of boron released and transferred can be calculated by following the procedures described below.- The borax utilized in these processes (i.e., boron and its compounds) reacts with caustic soda to produce sodium borate, which itself reacts with starch to form borate ester. As well, when boric acid is utilized, it reacts with caustic soda to produce borax. Thus, boron is transformed into a variety of chemical compounds, depending upon the processes in which it is utilized. However, for calculating the quantities released and transferred, the overall quantity should be understood in terms of the mass of elemental boron.- With respect to boron, the amount that will eventually be discharged into raw wastewater is equivalent to the difference between the quantity handled and the quantity shipped out in the form of finished product and corrugated waste. The wastewater treatment process then separates the raw wastewater into wastewater (treated water) and waste. Measurements are then performed to calculate the quantity of boron in the wastewater (treated water). The quantity of boron transferred in waste is equivalent to the difference between the quantity of boron discharged into raw wastewater and the quantity of boron measured in the wastewater (treated water). Table 7 Quantities of Boron Released / Transferred for Each Method of Wastewater Treatment [Calculation Examples]<Input Data for Calculations>Note: Figures in red font represent industry average values/nominal values- Production volume of corrugated boards: 49,000,000 m2 / year- Quantity of corrugated waste sold: 3,000 t / year = 3,000,000 kg / year- Average basis weight: 647g / m2 = 0.647kg / m2- Annual quantity of borax (Na2B4O7?10H2O) handled: 10,000 kg / year- Boron content: 11.3%- Quantity of adhesives for combining applied: 9g / m2 = 0.009kg / m2- Borax content of adhesives for combining : 2%- Quantity of glue balls produced: 12 kg / day- Solids content of glue balls: 35%- Number of days of operation: 20 days × 12 months / year- Quantity of clean up water discharged: 10m3 / day- Wastewater treatment facility: pressure floating + filter press method- Released to: bodies of water- Quantity of boron in treated wastewater: 4.4mg / l = 0.0044kg / m3 <Calculation Results>①Annual quantity of boron handled = 10,000 kg / year × 0.113 = 1,130 kg / year(Annual quantity of borax handled × boron content)②Quantity of boron in the product (corrugated boards) = 49,000,000 m2 / year ×0.009kg / m2 × 0.02 × 0.113 = 996.7kg / year(Production volume of corrugated boards × quantity of adhesive applied × borax content of adhesives for combining × boron content of borax)③Quantity of boron in corrugated waste= 3,000,000kg / year ÷ 0.647kg / m2 × 0.009kg / m2 × 0.02 × 0.113= 94.3kg / year(Quantity of corrugated waste sold ÷ basis weight × quantity of adhesive applied × borax content of adhesives for combining× boron content of borax)④Quantity of boron in raw wastewater released to the wastewater treatment process= 1,130－(996.7 + 94.3 + 2.3) = 36.7kg / year{①－(②+③+⑦)}⑤Quantity of boron released to bodies of water=quantity of boron in wastewater released to bodies of water from the wastewater treatment process= 0.0044 kg / m 3 × 10 m 3 / day × 240 days ＝ 10.6 kg / year(Measured quantity × quantity released (daily output × number of days ofoperation))⑥Quantity of boron in the sludge discharged from the wastewater treatment process = 36.7－10.6= 26.1 kg / year(④－⑤)⑦Quantity of boron in glue balls = 12kg / day × 0.35 × 240days / year ×0.02 × 0.113 = 2.3kg / year(Quantity of glue balls produced × solids content × number of days of operation × borax content of adhesives for combining × boron content of borax)⑧Quantity of boron transferred in waste = 26.1kg / year + 2.3kg / year= 28.4kg / year(⑥ +⑦) --If there is Copyright Dispute about the content, please Contact us to Delete.

1028 0

TTP in 3 carton plants acquire 1 million subsidies respectively

In order to accelerate the pace of industrial restructuring and transformation to promote the high-quality development of the city's industrial economy, earlier, the Bureau of Industry and Information Technology of Wuzhong, city of Ningxia Hui autonomous region, announced the subsidy technical transformation project (TTP) for industrial enterprise in 2019.According to statistics, there are 20 projects on the list, with a total subsidy of over 13 million yuan. There are three carton projects...

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Jingxing Paper will launch 1.4million tons project next year

Zhejiang Jingxing Paper(as Jingxing) said that the Malaysia project is expected to start construction in the first quarter of next year in a recently agency survey. Jingxing said the project of annually 800,000 tons of recycled pulp is the first phase of its pulp and paper base in Malaysia. The project has passed the approval of the EIA outline recently. If the project progresses smoothly, it is expected to start construction in the first quarter of next year and put into production...

2134

2020 first batch of license for waste paper

On December 23, the first batch of import license for waste paper in 2020 was published, with 39 enterprises approved for waste paper imported, and total of granted volume of 2,783,470 tons.According to preliminary statistics, with the exception of newsprint paper mills, most of paper mills have been granted import quotas equivalent to about 21% of their own quotas in 2019, but seven paper mills in Guangdong have been granted quotas about 1-6% higher than the general level.

1209

HF Paper builds a remarkable food package project

Project approval on Feb., land use approval on Mar., formally started construction on the early Apr., building projects completed on Aug.15, officially put into use in this year... the package paper project with annual output of 50,000tons, will help HF Paper create a remarkable speed in completing all of these whole processes mentioned above.HF Paper is one of the key enterprises in Mudanjiang, city of Heilongjiang province, and the leading enterprise in the special paper industry in China.

1217

Chinese High-level Corrugated Line Manufacture and Equipment Status Report

Technical overview of corrugated board production line in China The Chinese production line suppliers in corrugated board sector have continued to make investments in technology R&D since 2010, as a direct result of being the major corrugator suppliers to the overseas market. And the Chinese products have turned the old impression of “low speed and price” into medium and high end ones.

1651

Equipments

Corrugator & Wet-End

Layers

Width

Speed

Corrugator Dry-End

Layers

Width

Speed

Corrugator Related Machine

Roll Stand

Pre-Heater

Single Facer

Corrugating Roll

Glue Kitchen

Splicer

Guiding System

Double Facer

Sheet Presser

Corrugator Conveying Belt

Engery System

Slitter Scorer

Cut Off

Stacker

Process Control System

Printer Slotter Die-cutter

Machine Transfer Way

Sheet Transfer Way

Printing Way

Graphic

Flexo Folder Gluer

Driven Way

Sheet Transfer Way

Printing Way

Digital Printer

Printing Way

Printing Ink

Printing Related

Conveyor system

Pre-feeder

Printing Unit

Mold Making

Stacking

Complete in-line exit

Flatbed Die-Cutting

Manual

Semi Automatic

Automatic

Folder Gluer

Operate Way

Special Function

Stitching Machine

Operate Way

Strapping Machine

Operate Way

Conveyor System

Conveyor Function

Stacker

Winding Equipment

Waste paper Baler Machine

Robot Palletizer

Box Making Machine

Parts

Blades

Additive

Printing Comsumable Material

WL-NAVI-300

WL C220 2200

WL C250 2200

NXAFBSCK ADC100 MCS

Fuli 2/3/5/7/9-ply cardboard production line

TAIWAN HSIEH HSU MACHINERY HH-C300-25T CORRUGATED CARDBOARD MAKING MACHINE

Single Facer (BSF)

XIEYANG 2 Corrugated Cardboard Production line Wet-End

Guosheng PH-10R/12R Pre-Heater for Liner

Wanlian PHN100 Pre-heater/Pre-conditioner

How to avoid cardboard stuck in automatic packaging line

ZYK-3000 to help save time and money in AAA heavy-duty packaging

Six points that single facer must be updated

How to Use Intelligence to Reduce the Loss of Paper Feeding and Paper Splicing?