The edge banding problem of the aluminum foil bag (PET / Al / PA / rcpp) is that the hot knife temperature is high, the edge is wrinkled, and it cannot be sealed when the temperature is low. The pressure has been debugged, and the silica gel pad and raw materials have also been changed, but they still can't be solved. What's the solution?
Answer: consider from two aspects, one is the edge is wrinkled, the other is not sealed.
The reasons for edge wrinkling are as follows:
1. The material is not heat-resistant enough, and the material wrinkled after high-temperature sealing and ironing;
2. Glue and ink are not heat resistant enough;
3, is the glue and ink in the residual solvent is too much, in the process of sealing and ironing agglomeration volatilization and bubble wrinkling phenomenon;
4. It is the parallelism of the heat sealing knife of the bag making machine, the soft hardness and flatness of the silica gel do not meet the heat sealing requirements, and there are foreign matters on the heat sealing knife.
For problems that cannot be sealed, the reasons are usually as follows:
1. The quality of the heat sealing material is poor, the sealing temperature is too high, or the heat sealing performance is unstable.
2. The temperature and pressure of heat sealing knife are too low.
Therefore, it is suggested that the manufacturer should check from the above points, and pay special attention to the material source of the inner CPP, and consult the supplier more. In addition, it is suggested to use heavy-duty bag making machine for such thick materials, which can provide high heat sealing pressure and stable hot sealing temperature. Also can use the laboratory heat seal instrument to do a heat seal curve test on the material to prove that the material is OK. In order to judge whether it is the problem of material or bag making machine.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
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