Patent ID: 6787248
Filing Date: 2004-09-07
Classification: C25D,Y10S,Y10T

Abstract:
A bi-color rust-proof barrier layer structure of a tool head, especially a bi-color rust-proof barrier layer structure of which a surface is formed with a strip of recessed surrounding section marked with a size, a model, trademark and the like, which is characterized in that a surrounding surface of the tool head and the strip of surrounding recessed section are in advance electroplated or dyed with the rust-proof barrier layer of a specified color and then the rust-proof barrier layer on the surface of the tool head is removed so that the strip of surrounding recessed section is still maintained with the color of the rust-proof barrier layer before treated; after the tool head is put in an electroplating bath for one more â€œelectroplating on another barrier layerâ€  or in a dyeing tank for one more â€œdying on another barrier layerâ€  so that another colored barrier layer may be formed on the surface with a portion provided with the rust-proof barrier layer removed before, thereby allowing the color of the rust-proof barrier layer of the tool head serving as a foil to the different 2-color structure of the strip of surrounding recessed section.