ANTI-FINGERPRINT TPU PROTECTIVE FILM FOR 3D CURVED SCREEN AND PREPARATION METHOD THEREFOR

摘要

An anti-fingerprint TPU protective film for a 3D curved screen, the film comprising a low-adhesion protective film, an anti-fingerprint UV hardening coating formed by coating an anti-fingerprint UV hardening coating, an optical hard TPU resin film layer formed by coating optical hard TPU glue, an optical-grade high-adhesion silica gel pressure-sensitive adhesive layer formed by coating an optical-grade high-adhesion silica gel pressure-sensitive adhesive, and a fluorine element release film, which are fitted from top to bottom. The composition of the anti-fingerprint UV hardening coating comprises: UV prepolymer resin, an acrylate reactive diluent, a photoinitiator, a slipping aid and a first solvent. The optical-grade hard TPU glue is formed by polymerizing polyisocyanate, polyester polyol and a chain extender in a second solvent under the action of a first catalyst. The optical-grade high-adhesion silica gel pressure-sensitive adhesive is composed of silica gel resin, a cross-linking agent, an anchoring agent and a second catalyst. The anti-fingerprint TPU protective film for a 3D curved screen has the properties of fingerprint resistance, scratch resistance, being hard to crack and having a good fit to the curved screen.