Sheet material providing a two-color surface and method of forming the same

Abstract

The invention relates to a plate capable of providing a double-color surface and a forming method of the plate. The plate comprises a metal or ceramic substrate, a sacrificial layer, a first color layer and a transitional layer, wherein the sacrificial layer is positioned above the substrate and is corroded by a chemical solution easily as compared with the substrate; the first color layer is positioned above the sacrificial layer; and the transitional layer is positioned below the first color layer so as to enhance the binding force of the the transitional layer and the first color layer. The plate can form the background and the pattern and provides patterns with the thin line width by utilizing different colors, and has scratching resistance, wear resistance and corrosion resistance.

Description

technical field [0001] The invention relates to a board, in particular to a board with a two-color appearance. Background technique [0002] Electronic products have gradually become an indispensable part of modern life. In addition to many new functions, appearance has also become one of the important considerations for consumers when purchasing. Common electronic product casings include metal casings and ceramic casings, etc., and physical vapor deposition (hereinafter referred to as PVD) technology has been widely used in the field of metal surface decoration, because the PVD coating has good wear resistance, corrosion resistance, etc. Performance, so it has been widely used in the appearance of mobile phones and watches. However, while providing PVD coating on the above-mentioned products, in order to highlight its brand, the products generally have obvious brand logos on the surface of the appearance parts. At present, the more common methods of making signs include c...

AI Technical Summary

Problems solved by technology

[0003] The chemical etching method needs to use the photosensitive development technology to generate the pattern first, and then use a strong corrosive solution to corrode the coating layer or substrate of the pattern part, but the strong corrosive solution is also prone to side erosion, so the production The resulting pattern has incomplete edges and loses its original appearance

In addition, the etching solution used in the chemical etching method is usually a strong acid or alkali, which has a great impact on the environment

[0004] The laser method is easy to carve off the PVD coating and get a perfect pattern on the edge, but due to the high energy generated by the laser, the metal layer in the pattern area will be severely oxidized and yellowed, and the original appearance will also be lost

[0005] In addition, the patterns produced by the above two methods can only be the original color of the metal, and the visual effect is relatively simple.

Various color patterns can be printed on the PVD coating by using screen printing ink method, but its wear resistance is very poor

[0006] None of the above three methods can provide logo patterns that can maintain the appearance of the PVD coating and produce different color effects. coating is scratched, corroded or etched) becomes the focus of the present invention

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