The reasons for poor printing fastness of plastic film are as follows:
1. Poor corona treatment of polyolefin film.
Countermeasures: detect whether the surface tension of PE and PP is more than 40 dyne / cm.
2. The affinity between the printing ink and the printed material is poor. The ratio of mixed solvent is poor.
Countermeasures: change the ink, adjust the solvent ratio.
3. The temperature and relative humidity of printing workshop change greatly.
Countermeasures: try to control the relative humidity in the workshop between 50% - 60%, but not too low. When it is lower than 40%, it is easy to generate static electricity. The best temperature control is 18 ℃ - 23 ℃, and keep the environment clean and air circulation.
4. The printability of plastic film itself is very poor, and it still does not meet the requirements after corona treatment.
Countermeasures: replace the printed materials.
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.