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 bag making machine, the soft hardness and flatness of silica gel do not meet the requirements of heat sealing, and there are foreign matters on the heat sealing knife
For problems that cannot be sealed, the reasons are usually as follows:
1. Quality problem of heat sealing material, too high sealing temperature, or unstable heat sealing performance
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. We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations.