A kind of method that PET film forms colorful film and its application in glass cover plate

Abstract

The invention discloses a method for forming a colorful film from a PET film and its application in a glass cover plate. In the treatment solution for 3 to 6 hours to seal the irregular micropores and defects on the surface of the PET film, and dry at 60°C for 1 hour; S2: Coating modified PMMA resin film: After pretreatment, one side of the PET film is coated with fluorosilicon modified methyl The acrylic emulsion is cured at 60°C to form a modified PMMA resin film, and the thickness of the film layer is controlled to be 100-150nm to obtain a PET / PMMA composite film; S3: Repeat steps S1 and S2 to obtain 25-40 groups of PET / PMMA composite films; S4: Stack 25-40 sets of PET / PMMA composite films according to the way that the PMMA side is up or down, and hot-extrude at 100°C to form a multi-layer optical interference dazzling film. The process of the invention does not need a melting extrusion process, and only needs to stack 25 to 40 groups of PET / PMMA composite films to achieve good light effects, greatly shortening the processing process and saving a lot of raw materials.

Description

technical field [0001] The invention belongs to the technical field of PET film processing, and in particular relates to a method for forming a colorful film from a PET film and its application in glass cover plates. Background technique [0002] Dazzling film is also called iridescent film, colorful film, magic film, laser iridescent film, due to the different materials of multi-layer film, the refractive index is different, using the principle of light interference, under the irradiation of light, the refraction and interference between layers can be selected The multi-angle layered color changes between them produce a rainbow-like effect in the sky. At the same time, at different distances and different angles, the colorful film substrate will show completely different colorful effects due to its rich light effects. [0003] The traditional colorful film is made of composite plastic film by melting and extruding two or more resins with different refractive indices and sta...

AI Technical Summary

Problems solved by technology

[0003] The traditional colorful film is made of composite plastic film by melting and extruding two or more resins with different refractive indices and stacking at least 100 layers at intervals. Since this process must go through the melt extrusion process, different refractive index There will be partial mixing between the index resin melts, which will reduce the difference in refractive index between the layers of the colorful film, so it is necessary to stack more layers of resin films to achieve a good light effect, and the processing technology is cumbersome.

For example, the patent application number CN02159049.4 discloses a multilayer optical interference iridescent film and its preparation method. The iridescent film is composed of more than 70 layers of A layer and B layer, and the resin core layer is composited. The processing technology is cumbersome and requires more raw material