[China Aluminum Industry Network] 1. Selection of dyes for aluminum oxidation equipment There are a wide variety of organic dyes, and dyes need to be selected according to different uses and product grades. Soluble vat dyes are expensive and excellent in color fastness, so they are mostly used in the dyeing of high-grade aluminum products, gold pens, lighters, and hearing aids; alcohol-soluble dyes are used in aluminum foil dyeing; oil-soluble dyes are used in the printing of aluminum foil and are dissolved in nitrocellulose before use. In lacquer such as enamel, vinyl resin or polyamide resin, or in melamine resin and epoxy resin that are dissolved in baking paint, a resin film with dye is formed on the surface of the cleaned aluminum foil after printing. The dyes used for the dyeing of aluminum products include acid dyes, acid complex dyes, acid mordant dyes, direct dyes, weak acid dyes, disperse dyes, soluble vat dyes, reactive dyes, basic dyes, alcohol-soluble dyes, oil-soluble dyes, etc. .
2. Aluminium Oxidation Equipment Organic Dyeing Process and Control Monochrome Dyeing: Anodized aluminum products washed with clean water, immersed in the dye bath of the specified temperature, the time of dyeing is determined by the depth of color, and the amount of dyeing bath can be controlled. The ratio of the volume to the product is 10:1.
Multi-color dyeing: If two or more different colors, such as landscapes, flowers, birds, tasks, words, etc., are to be dyed on aluminum parts, the printing process is mostly used to complete the printing. The printing plate can be used in type (zinc plate, paper plate) and Screen version, direct printing method, paint anti-staining method, foam plastics, etc. can be used. The general method is to stain the first color, the part of the need to leave the color with a protective print on the flower print, the remaining color off, the second, third and more colors and so on.
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