Research on bonding technology of PET polyester film coating interface-film supplier

by:POLYVA     2021-12-03
There are many factors that affect the bonding strength of the PET polyester film coating interface, such as interface residual stress, coating thickness, curing temperature, curing time, and post-curing. We know that untreated PET polyester film, the coating is difficult to adhere to it tightly. Therefore, the PET polyester film coating interface bonding technology has become the primary problem for domestic and foreign scholars to study the functional application of coated PET polyester film. Almost all surface coating technologies are based on the wetting of the coating liquid on the surface of the substrate as a prerequisite for its combination. In the actual operation process, the interfacial tension of the coating liquid can be adjusted by selecting the composition components of the coating liquid and adjusting the ratio of each composition component, so that the surface tension can match each other. A water-based coating liquid for optical polyester film is used on PET polyester film. The polyester film obtained after coating has high transparency, low haze, excellent adhesion and slipperiness, and is suitable for optical applications The base material such as diffusion film, brightness enhancement film and so on. Coating a coating solution containing acrylic adhesive, silicon-containing wetting agent, colloidal silica, and melamine hardener on the PET polyester film, the PET film and the post-processing layer have excellent adhesion strength , More suitable for optical film use. PET polyester film has low surface tension and low affinity for coating liquid, and PET polyester film has high crystallinity. After coating the coating liquid, it is not easy to be swelled by the coating liquid to cause intermolecular diffusion, thus bonding Sex is relatively poor. Therefore, treating the surface of the PET film substrate can increase its surface tension, reduce its surface crystallinity, and improve its surface adhesion. At present, the common treatment methods for PET polyester film at home and abroad include chemical oxidation treatment, photochemical treatment, plasma treatment, corona discharge treatment and primer treatment. 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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