A kind of preparation method of rainbow silver paste

Abstract

The invention relates to a preparation method of rainbow silver paste, which comprises the following steps: sequentially coating a release layer and an information layer on a PET film, then molding, and then performing aluminum plating, and peeling off the release layer from the PET film After that, the stripped matter is cleaned and pulverized to obtain rainbow silver paste. Compared with the prior art, the rainbow aluminum paste prepared by the process of the present invention has a colorful effect and a color-dependent function, the color is rich and plump, and the cost is low.

Description

technical field [0001] The invention relates to a paint, in particular to a preparation method of rainbow silver paste. Background technique [0002] Aluminum paste composed of flake aluminum powder and solvent has various types and can display silver and colored metallic luster. Because of its good light reflection effect and long-lasting brightness, it is widely used in inks, coatings and other fields. [0003] Rainbow aluminum paste is based on ordinary flake aluminum powder, endowed with illusion effect, and can present a dazzling rainbow effect under strong light, and has multiple uses such as decoration and anti-counterfeiting. [0004] Aluminum paste is usually produced by ball milling. Spherical aluminum powder is used as raw material, which is turned into flake aluminum powder by wet ball milling, and then aluminum paste is made by grading, filtering, mechanochemical polishing and other processes. The aluminum paste produced by this process has the following defic...

AI Technical Summary

Problems solved by technology

The aluminum paste produced by this process has the following deficiencies: the one, that the color and luster is single silver; the other is that the surface of the aluminum powder is easily oxidized and darkened or even blackened; the other is that the powder sheet has a large thickness, so it is difficult to prepare a powder sheet with a thickness of only tens of nanometers; The third is that the thickness of the aluminum powder is uneven, the surface of the powder is uneven, and the scattering and diffuse reflection of the surface and edge light are serious, which affects the brightness, color and metallic feeling of the aluminum paste; the fourth is that the hiding power of the water surface is low, and the printing and coating area per unit is consumed. large

This patent is to directly vacuum-deposit high-purity aluminum layer on the plastic film to form an aluminum-coated film, and then perform molding, laser and other steps to obtain the product. It is inevitable that scratches will occur during peeling, which will affect its effect.