The gravure printing of plastic film has the advantages of fast speed, rich color, clear and bright, moderate contrast, vivid image and various product specifications. In gravure printing, the quality requirements of plastic film are relatively high. This paper briefly lists 8 standards for the quality and appearance of plastic film printing.
The characteristics of plastic film in gravure printing are the same as gravure printing of paper in plate making process, printing mechanism, imprinting method and printing principle, but it has its own characteristics. From the perspective of printing materials, plastic has high surface finish, strong inertia, low tension, strong chemical stability, is not easy to accept the infiltration of ink, and is not easy to be penetrated and dissolved by most ink solvents, which will affect the drying of plastic printing and affect the adhesion between ink layer and film.
Therefore, the printing ink of plastic film is different from other printing materials. Moreover, due to the "surface printing" and "inside printing", there are different requirements for the connecting materials and additives of the ink. Therefore, two different properties of plastic ink can not be mixed, or easy to separate, deterioration and other failures, resulting in unnecessary economic losses.
The requirements for the quality of Gravure plastic film products are high, and the printing appearance quality standards are as follows: (1) after the pattern matching process, the registration error of each color pattern is not greater than 0.3mm. ② Check the specification of the film, and the registration error of each color pattern is not greater than 0.33mm. ③ Check the ink color of printing products, and make sure that the color is correct, bright, even, bright, soft and smooth. ④ The printing fastness requires that the transparent adhesive tape does not discolor. ⑤ The lines of patterns and characters should be clear and complete, not incomplete or deformed. ⑥ The network pattern requires rich layers and clear dot. ⑦ The product is clean and tidy without obvious dirt and knife thread. ⑧ The color deviation of the same batch is in line with gb7707.
Gravure printing standards mainly focus on the accuracy of overprint and color reproduction. The quality control of plastic film gravure products mainly includes registration control, tension control, ink control and temperature control, which specifically involves six aspects of film material, ink, plate making, equipment, process and operation technology. To print a good product is also related to the use of solvent, environmental temperature, hot air, humidity, etc. If one aspect is not considered properly, quality problems will arise in the printing process.
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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