1. Edge sticking and membrane breaking.
Because of the poor tear resistance of BOPP film, it is necessary to protect the section from any damage in the production and transportation process, otherwise it is easy to cause adhesion and film breakage.
2. The printing register is not good.
If BOPP does not control the local thickness well during biaxial stretching, it will cause the phenomenon of "lotus leaf edge", and the mark line tracking is not good during printing, resulting in poor overprint.
3. The corona value of substrate surface is low.
Only when the surface tension of BOPP printing surface or composite surface reaches more than 38 dyne can the adhesion fastness of the ink be ensured and the peeling strength after lamination meet the requirements; if the corona value cannot meet the requirements, it can not be used.
4. The antistatic property of BOPP is poor.
The poor antistatic property of BOPP can easily lead to the accumulation of static electricity in the film, which is caused by the discharge when the printing plate contacts, resulting in the phenomenon of "missing points" and "burr" and "empty edge" of the pattern, which seriously affects the quality of printed matter.
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.