Method for electrophoresis of dual-color patterns on metal surface

Abstract

The invention discloses a method for electrophoresis of dual-color patterns on the metal surface. A masking film of a preset shape is manufactured with hot melt adhesive, and the masking film adheres to the metal surface; a first paint layer is formed in an uncovering area of the masking film through primary electrophoresis; and a second paint layer different from the first paint layer in color is deposited in a covering area of the masking film through secondary electrophoresis after the masking film is removed, and accordingly the patterns of the masking film are transferred to the metal surface. The masking film made of the hot melt adhesive can be removed easily by being dissolved and cleaned with hot water or an organic solvent, strong base or other corrosive matter is not needed, and the film structure cannot be affected; and meanwhile, various dual-color electrophoresis patterns can be formed as needed, the manufacturing process is simple, the appearance life is long, and the application range is enlarged.

Description

technical field [0001] The invention relates to a metal surface treatment method, in particular to a two-color pattern electrophoresis method on the metal surface. Background technique [0002] The monotonous metallic or single-color paint surface of metal products can no longer meet people's needs for diversified product appearance. Therefore, while protecting the surface of metal products, a colorful decorative pattern appearance is formed to manufacture decorative products and unify the style with other parts High-quality products or novel and beautiful products are gradually being valued, and their production processes are also developing day by day. [0003] The existing pattern appearance production methods include surface spray coating, heat transfer pattern, printing, etc. The ink layer of these methods is separated from the primer, and only exists on the surface of the product without penetrating the primer, which is easily damaged by wear and corrosion. etc., espe...

AI Technical Summary

Problems solved by technology

When cleaning the ink, strong alkali or other corrosive substances must be used as cleaning agents, which will cause damage to the primary electrophoretic film layer, thus greatly affecting its performance and appearance, and easily causing environmental pollution

In addition, to form the pattern of the preset shape, the ink needs to use screen printing and other methods to achieve different patterns by designing different screens. Switching between screens and cleaning and maintenance are troublesome, costly, screen life is short, and the process is relatively slow. complex, which limits its application

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