Parents should know that if corrugated cartons or corrugated paperboards are stored for a long time, they will face softening problems. Then, what causes softening and how to solve such problems? Xiaobian organizes as follows:
One reason:
1. Weather factors: rainy season, wet weather, high humidity;
2, cardboard material: base paper and corrugated paper, especially the poor quality of tile, water absorption;
3. Production process: waterproof additives, preheating, sizing, and draining on the production line;
4, storage environment: whether ventilated and ventilated, the ground is moisture-proof, there is no use outside the wrapping film protection;
5. Transportation Environment: How to transport the cardboard from the offline to the third-level factory, what kind of vehicle is used?
6. Carton processing technology: How long will the cardboard after the offline production begin to produce cartons? How about the production process?
Second, introduction and solution:
1: Weather: During the rainy season and wet weather, if the humidity in the air is too high, the base paper and corrugated paper are in direct contact with the air, which will attract the humidity in the air until equal, so in this season, whether it is a cardboard factory or The carton factory will receive complaints, and even even returns, fines, and compensation. Since it is fundamentally impossible to solve this problem, naturally everyone is working hard to solve the problem.
Solution: It seems that we can't solve the weather factor, but we can solve it from the storage environment. We can refer to Article 4.
2: Cardboard material: base paper and corrugated paper, especially the poor quality of tile material, strong water absorption; paper exposed in the air for a long time, and the air humidity balance, the cardboard will be soft, this is inevitable, but we often The softening is all referred to as pit paper soft, because the pit paper is generally inferior to the surface paper and the paper, poor natural material, strong water absorption, corrugated board plays a physical role in the paper, such as compressive buffer and anti-stamp, once When we soften it back down, we press it down with our fingers and it goes down. The entire cardboard is also soft.
Solution: It is recommended to replace the high-strength and high-strength pit paper. At present, there is a pit paper containing water repellent to choose from, which can reduce or reduce some softening phenomenon.
3: Production process: Since the weather is beyond our control, after replacing the material, we look at the production process. We know that the board needs to be preheated during production to achieve drying, pressing and gluing, pasting over the bridge, and draining into cardboard. The production process is off-line and off-line drying. In the middle, preheating can easily achieve the effect of drying. The change of paste formulation and waterproof additive can reduce the phenomenon of softening.
Solution: Increase the borax content and add water repellent when making the paste, which can reduce the softening probability.
4: Storage environment: The cardboard after going offline should remove the hot air that has not been dissipated to avoid the formation of condensation phenomenon due to the temperature difference. The environment for storing cardboard or carton should be kept ventilated and ventilated. The cardboard box can not be placed directly on the ground. Plywood). Pay attention to the space between each other during storage to facilitate ventilation and heat dissipation.
Solution: It is recommended to use wood pallets, which can absorb the moisture on the ground, and the size is suitable for paperboard carton; keep the storage environment ventilated and breathable, and use the wrapping film for external protection, which can effectively reduce and isolate the phenomenon of weather softening.
5: Transport environment: Down transport is a necessary process. Commonly there are convertible vans and vans. The latter is more able than the former to protect the drying of cardboard, avoiding and reducing softening.
Solution: It is recommended to use van trucks. This is also the truck that is commonly used by major supply companies.
6: carton processing process: corrugated board from the cardboard line after the next line to enter the next process 4-6 hours the most appropriate, at this time the paperboard has been fully stereotyped, in the printing, stamping and other molding process does not change the physical properties. In other words, the quality of the corrugated board at this time is the most stable, and after several hours of internal adjustment, the indexes of adhesive strength, burst strength, side pressure strength, and thickness are restored to the extreme, and the moisture balances with the best storage environment. . Of course, the storage time depends on the materials used in the corrugated paperboard. If the paper fiber inside is short and the toughness is poor, it is necessary to enter the next process as soon as possible within the shortest time of the offline process. Otherwise, there will be quality problems such as pressure line breakage and folding fracture. . In the spring and autumn season where the climate is dry, we must pay particular attention to that if the storage time exceeds 6 hours or more, the cardboard will be severely dehydrated and cause quality accidents when it enters the molding process. In summer, the high-temperature and rainy cardboard absorbs the moisture in the air to achieve the moisture balance with the environment. The cardboard becomes soft and the compressive strength drops dramatically. Therefore, it is recommended that all cartons and third-tier plants do not store too much material, because this will greatly increase the probability of softening. On another level, it is also a failure of procurement, inventory = overdraft; so it is best to do cardboard production tomorrow morning. This afternoon, the paperboard produced in the afternoon will arrive in the morning so that it can effectively avoid softening. We will strive to be smooth because of the impact of on-time delivery. Carton production process is bound to cause damage to corrugated, mainly pressure line wheel, pre-printed wheel, printing plate domain, die-cutting area, etc., can easily cause the cardboard corrugated sheet to lose rigidity, that is, become soft. This cannot be avoided either because cardboard cannot be boxed, and during production, repeated pre-pressing or pre-pressing of excessive weight is avoided, the cardboard is kept flat, the collapse of the printed content is reduced, and the die-cut sponge is kept as little as possible.
Solution: Strictly control the production process in production, reduce man-made damage, avoid repeated preloading, preloading, etc., print content is reasonably designed to avoid full-page printing, die-cut also try to avoid full die-cutting, not to handle, All beer.
Information Processing: Carton Street
Dinosaur Toys,Dinosaur Robot,Candy Dinosaur Toys,Dinosaur Candy Dispenser
Shantou Chenghai LeTime Trading Co., Ltd , https://www.letimetoys.com