Process for preparing water transfer printing film

Abstract

The invention relates to a process for preparing a water transfer printing film, which is mainly used for surface coating of workpieces. The process comprises the following steps: 1) preparing a polyvinyl alcohol film; 2) printing various patterns on the polyvinyl alcohol film, and adding a layer of bonding agent; 3) pressing logic grains on the polyvinyl alcohol film printed with the various patterns, or radiating laser film grains on the polyvinyl alcohol film in order to generate grains; 4) performing vacuum plating or sputtering on the polyvinyl alcohol film with the grains to generate metallic luster; 5) placing the polyvinyl alcohol film after the vacuum plating or sputtering on water surface, and letting a surface not printed with the pattern layer to contact the water surface; 6) spraying or coating a reducing agent on the printed surface, reducing the printed solid surface into a liquid surface, pressing a workpiece into the liquid surface from the top down, and transferring the patterns to the surface of a product through the water pressure; and 7) cleaning residues, drying, and spraying a finish paint to form a layer of transparent protective coating. The preparation process is simple and has low cost.

Description

technical field [0001] The invention relates to a manufacturing process of a water transfer printing film. Background technique [0002] The existing printing process can usually only print calligraphy and painting patterns on objects with regular shapes, such as planes, spherical surfaces, cylindrical surfaces, etc., but cannot print calligraphy and painting patterns on objects with complex and changeable surface shapes. Industrial products such as mobile phone shells, anti-theft doors, various furniture, home appliances, etc., because the surface shape is relatively complex and changeable, they cannot be decorated with printed calligraphy and painting patterns, or in order to be able to print calligraphy and painting patterns on the surface of the product, they have to be printed The product is designed with a rigid structure, which affects the appearance image and market sales of the product, resulting in a low price. In response to the above situation, a water transfer ...

AI Technical Summary

Problems solved by technology

The transfer film of this process contains heat-sensitive adhesive materials, and the production cost is high; the substrate needs to be heated in advance, and the transfer process also needs to be heated, and the process is cumbersome

The above two processes have limited the use of transfer film due to the above-mentioned many shortcomings.