Release coating for moldable hot stamping and its application process

Abstract

The invention belongs to the field of thermal transfer technology, and in particular relates to a moldable release coating for hot stamping and its application process. 10-15 parts of vinyl ester, 2-6 parts of unsaturated polyester resin, 2-5 parts of alkyd resin, 0.5-2.5 parts of high-density polyethylene micro wax powder, 1-3 parts of fumed silica powder, 0-0 parts of dye 3 parts, diluent 50-100 parts. The invention innovates the component formula, coating process and holographic molding process, so that the application coating has both hot stamping transfer performance and moldability, simplifies the production process of holographic laser hot stamping materials, and has hot stamping accuracy High temperature, low molding temperature, and good holographic laser effect.

Description

technical field [0001] The invention relates to a release coating for moldable hot stamping and its application process, which belongs to the technical field of thermal transfer. Background technique [0002] Hot stamping materials are easy to use and clean, and have a certain anti-counterfeiting effect while improving the appearance of the ironing substrate. In recent years, they have gradually become popular in various fields. As the key raw material for the production of hot stamping materials, release coating has a key influence on the transfer performance of hot stamping. [0003] At present, water wax release coatings are commonly used in the entire thermal transfer technology field, which only have a single hot stamping transfer performance and cannot be used for holographic molding. Therefore, when preparing holographic laser hot stamping materials, it is necessary A layer of moldable coating is applied on the base, resulting in low production efficiency, and proble...

AI Technical Summary

Problems solved by technology

[0005] Judging from the existing public technology: Chinese Patent Application No. 201410130592.9 discloses a anti-counterfeiting hot stamping film anti-adhesive board molded coating, which is prepared by blending polytetrafluoroethylene, acrylic resin, maleic anhydride and other materials. It mainly solves the problem of molded sticky board, and does not have hot stamping transfer performance; Chinese patent application number 201110359295.8 discloses a thermosetting transfer release agent and its preparation and use method, using fluorocarbon resin, C4-C8 alkanes, A release agent prepared by polytetrafluoroethylene micropowder, etc., is mainly to prevent the migration of the release agent, and has nothing to do with holographic molding. The technical scheme and thermosetting transfer technology involved are essentially different from the present invention; Chinese patent application number 201110359295.8, discloses a water-based transfer laser coating for vacuum plating medium and its preparation method, mainly to solve the problem of coating and medium fastness. There are essential differences; Chinese Patent Application No. 201510147568.0 discloses an environmentally friendly water-based composite wax emulsion release material for anodized aluminum and its preparation method. The surface tension of the coating is improved by using a water-based resin in the montan wax. In order to improve the appearance of the coating film of dark products, it belongs to the formula upgrade of wax release coating, which has nothing to do with holographic molding; During the cold stamping process, there are problems of powder falling and graphics and text clarity. The release layer does not have holographic molding performance. At the same time, the UV varnish needs to be cured and bonded to the printing substrate during cold stamping. The peeling and transfer process is not carried out. There are differences in technical principles between heating transfer and hot stamping transfer