A coating capable of repeating the transfer of molded grating patterns and a template film containing the coating

Abstract

The invention provides a coating that can repeatedly transfer the grating pattern obtained by molding to the surface of the substrate. The coating includes a modified acrylic resin of 30-40% by weight, a curing agent of 10-25%, 0.15-0.5% catalyst and 40-55% solvent, wherein the modified acrylic resin includes acrylate or methacrylate monomer, hydroxy acrylate, epoxy resin, hydroxyl-containing silicone resin, initiator and solvent . The strength of the coating of the invention is suitable for molding, the surface is compact, the solvent is not easy to penetrate, the surface tension is low, and after molding, it can still have a clear grating pattern under the condition of repeated stripping. The present invention also provides a stencil film that can repeatedly transfer the grating pattern obtained by embossing. The stencil film includes a base film and the above-mentioned coating firmly laminated on the base film. The coating is molded to form a grating pattern. . The stencil film of the present invention only needs to be molded once, and the grating pattern can be continuously copied to substrates such as paper or plastic glass through the release layer or the adhesive layer, which not only saves the process, but also greatly reduces the production cost.

Description

technical field [0001] The invention relates to a coating, in particular to a coating used for molding a grating pattern in a laser transfer aluminized film, and more particularly to a coating that can repeatedly transfer the grating pattern obtained by molding to the surface of a substrate. coating. The present invention also relates to a stencil film comprising the above-mentioned coating and functioning as a stencil. Background technique [0002] Laser transfer aluminized film or aluminized paper is widely used in the decoration and anti-counterfeiting of cigarette packaging boxes and wine bottle stickers due to its high brightness and brilliant transformation of laser decorative effects. The existing manufacturing method of laser transfer aluminized film is to coat a release layer on the PET film, then mold the release layer to generate a grating pattern, then coat aluminum on the molded layer, and finally coat the aluminum coating with glue. sticky layer. After the l...

AI Technical Summary

Problems solved by technology

After the laser transfer aluminized film is transferred, the grating pattern is transferred to the substrate along with the release layer. When the peeled PET film is used again, it is necessary to repeat the same process of coating the release layer and molding, so that not only the processing time Long, and when molded, the PET film is stretched and deformed by high temperature, and cannot be reused many times, resulting in a lot of waste, which is not conducive to reducing production costs

Chinese patent application "Biaxially stretched polypropylene base film for laser imprint transfer and its manufacturing method", application number 02115421.X, proposes a BOPP base film that can be directly embossed, this base film not only Large-scale special film-making equipment is required, and BOPP film is not heat-resistant. During the evaporation and transfer process of the base film with grating pattern obtained by embossing, the grating pattern is easily deformed by heat. After several times of use, the obtained grating Patterns will be blurred and again cannot be used more than once