Glass silk screen processing etching silk screen. For a long time, the etching decoration of glass products is to thermally coat wax layer and other reinforcing materials on the glass surface as a resist layer, and then use needles, knives, etc. to carve patterns on the coating to expose the glass surface. This part is etched with hydrofluoric acid. This process continues to this day and is still used by manufacturers, but its processing method is time-consuming, labor-intensive and inefficient.
The silk-screen etching process makes the etching and decoration of glass products simple, time-saving and labor-saving. There are two methods for etching silk screen printing of glass, hot stamping and cold stamping.
Thermoplastic etching screen printing is a binder prepared by paraffin, asphalt, stearic acid, etc., and a small amount of resist powder is added to prepare a resist printing material. to the glass surface to form a resist film. The part where the glass is exposed on the resist film is the pattern that needs to be etched. The etching is carried out with chlorofluoric acid, and after etching, the resist layer printed on the glass is rinsed with boiling water.
Glass silk screen printing and etching can also be carried out by cold printing method. Anti-corrosion printing materials can use special asphalt paint plus anti-corrosion powder, or buy commercially available anti-dependence ink. After the printing is completed, the hydrofluoric acid etching can be carried out after the resist film is completely dried.
Hot stamping is suitable for the etching of continuous two-sided and four-sided continuous patterns, and cold stamping is suitable for the etching of individual patterns.
2. Glass ice silk screen printing. Binghua is commonly known as orange peel, which is actually very small low-melting glass particles. This kind of small glass particles, with high lead content, has two kinds of color and colorless.
Silk screen ice flower decoration, simple and elegant, is mostly used for architectural glass decoration and arts and crafts glass decoration, such as the decoration of high-grade glassware, lamps and so on.
Silk-screen glass ice decoration is to first screen-print a colored or colorless glass flux layer (flux) on the surface of the glass, and then sprinkle the ice-flake glass particles on this layer of glass flux, and sinter at 500 ° C ~ 590 ° C to make the glass The surface of the flux layer and the layer of ice particles are fused to produce the relief effect. For example, the colored flux is silk-screened on the glass, and the tiny ice flowers are transparent. Through high temperature eutectic, the flux layer of the glass ice pattern part will fade, and a colored and raised transparent relief pattern will be formed on the glass surface.
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