Laser transfer coating for pre-coloring and preparation method thereof

Abstract

The invention relates to a laser transfer coating for pre-coloring, which is prepared from the following components: 0-12% of polyamide resin, 0-10% of polyester resin, 0-5% of vinyl chloride-vinyl acetate resin, 2-30% of polyacrylate resin, 0-4% of amino resin, 0-9% of nitro-cotton resin, 0.2-0.6% of cross-linking agent, 0.4-1% of dispersing agent, 1.2-1.5% of wetting agent, 68-84% of solvent and 0.8-1% of dye. The preparation method of a water transfer printing laser coating comprises the following steps: preparing raw materials; adding the solvent into a reaction kettle, stirring, and heating; sequentially adding the resin, and stirring at high speed until the resin is completely dissolved; sequentially adding the cross-linking agent, the dispersing agent and the wetting agent slowly, and stirring at medium speed until the cross-linking agent, the dispersing agent and the wetting agent are dispersed uniformly; adding the dye slowly, and stirring at high speed until the dye is dispersed uniformly to obtain a solution of the laser transfer coating for pre-coloring; sampling, and measuring solid content and viscosity; and stirring at medium speed, cooling, and filtering to obtain the laser transfer coating for pre-coloring. The laser transfer coating for pre-coloring and the preparation method thereof can be applied to the pre-coloring process of laser transfer products.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to a laser transfer coating for front coloring and a preparation method thereof. Background technique [0002] Most of the laser transfer products in the prior art adopt the post-coloring process. The so-called post-coloring process is to coat the PET film first, and then emboss the laser pattern on the coated PET film by molding, and then peel it off after aluminum plating. Color layer. The post-coloring process is not only complicated in process, high in paper consumption, but also consumes a lot of energy and takes up a lot of manpower, thereby increasing the production cost. [0003] In the prior art, there is no laser transfer coating formula and preparation method applicable to front coloring. The so-called pre-coloring process is to apply the color layer while coating the release layer, and then peel off after molding and aluminum plating. [0004] Therefore, in vi...

AI Technical Summary

Problems solved by technology

The post-coloring process is not only complicated in process, high in paper consumption, but also consumes a lot of energy and takes up a lot of manpower, which increases production costs.

[0003] In the prior art, there is no laser transfer coating formula and preparation method that can be applied to front coloring