Silk screen glass processing etching screen printing. For a long time, the etching decoration of glass products is to heat coat wax layer and other strengthening materials on the surface of glass as an anticorrosive layer, and then on the coating with a needle, knife, etc., carved out patterns, exposing the surface of the glass, and then on this part of the fluorohydroacid corrosion. This process is still used by manufacturers, but its processing method is time-consuming, laborious and inefficient.
Silk screen etching process, so that the etching decoration of glass products become simple, time-saving and labor-saving. Glass etching screen printing, there are two methods of hot printing and cold printing.
Thermoplastic etching screen printing, is the adhesive prepared by paraffin, asphalt, stearic acid, adding a small amount of anti-corrosion powder to make anti-corrosion printing material, through the thermal printing screen plate, according to the design pattern, the printing material scraping to the glass surface, the formation of anti-corrosion film. The part of the glass exposed on the resist film is the pattern to be etched. The etching is carried out with chlorofluoric acid. After etching, the resistant layer printed on the glass is washed away with boiling water.
Silk screen glass processing etching, can also use cold printing method. Resist printing material can use special asphalt paint and resist powder, also can buy commercially available anti - press ink. After printing, wait for the corrosion film to dry completely, can be carried out hydrofluoric acid corrosion.
Silk screen glass ice decoration, is first in the glass surface screen colored or colorless glass flux layer (flux), and then the ice glass particles scattered on this layer of glass flux layer, through 500℃ ~ 590℃ sintering, so that the glass surface of the flux layer and ice particle layer eutectic and produce relief effect. If the silk screen on the glass is colored flux, and the micro ice is transparent, through high temperature eutectic, the flux layer of the glass ice pattern parts fade, and the formation of colored, raised transparent relief pattern on the glass surface.