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Five technical points of PET film printing (1)-film supplier

by:POLYVA     2021-11-17
As PET material occupies an important position in variable information printing, it belongs to film printing, which is very different from paper materials in printing process. 1. Material characteristics PET film is a plastic film material with medium and low surface energy. It needs surface pretreatment before printing to increase the surface removal energy or wetting ability. Otherwise, the ink and ribbon are not strong enough and easy to fall off. 2. Basic methods of surface pretreatment a. Corona treatment. Through the method of high-voltage discharge, the surface energy of the material is increased. There are two methods: pre-processing by the supplier in the production of materials and online processing on the printing press. The surface tension of the film after treatment is required to reach 38 dyn or more. It should be noted. For some PET materials, no matter how much current corona is used, the surface tension value can not be increased. In fact, there are not many manufacturers who use corona method to surface treatment, because the quality is unstable, and finally the ribbon printing is not possible. b. Surface coating. Pre-coat the surface of the material with a coating of affinity ink, such as using corona-free PET film surface treatment agent and PET film surface treatment agent to improve its ability to wet the ink and increase the firmness of the ink. This processing method is the most ideal, common and stable method for PET materials. It is a company specializing in the production of PET film with multiple functions, such as: transparent PET film, milky white PET film, release PET film, supply of PET motor film, etc. With a wide variety of products, affordable prices, and environmental protection, we provide customers with excellent quality and service based on the service tenet of excellence in production, honesty and trustworthiness in distribution, and warm and thoughtful service. Interested parties welcome to inquire!
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