(1) Reduce the tension of traction substrate
It is easy to cause wrinkling of the composite film when it is cooled and shrinked. Wrinkling can be reduced by properly reducing the running tension of the substrate.
(2) Adjust the flatness of the substrate
If there is parallelism error of each guide roller assembled on the dry laminating machine, then some plastic film substrate is easy to produce wrinkles on the guide roller. The packaging is safe in production. The flatness of the substrate can be adjusted by adjusting the position of the roll. Of course, we can also add some flattening roller or bending roller at the appropriate position before lamination to stretch the film.
(3) Adjust compound roller pressure
In the production process, special attention should be paid to the adjustment of the composite pressure between the two composite rollers. For example, if the pressure is too high, China's printing enterprises are strong, and it is easy to cause the wrinkle of the composite film.
In addition, cleaning the composite roller and replacing the damaged rubber roller can also avoid wrinkling of the composite product. In the design, if a preheating roller is added before lamination to preheat the surface of the second unwinding substrate and print on demand, the temperature of the second unwinding substrate and the coated substrate before lamination is basically consistent, and the curling deformation of the composite film after cooling can be prevented.
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.