Brief introduction of the hottest screen printing

Brief introduction to silk screen glass technology

when melting glass, add a small amount of glass colorant to make all kinds of colored glass. Copper oxide (II) or chromium oxide (III) produces green; Cobalt (II) oxide produces blue; Manganese dioxide produces purple; Tin dioxide or calcium fluoride produce milky white; Uranium compounds produce yellow green fluorescence; Colloidal selenium produces ruby color; Colloidal gold produces red, red purple or blue; Cuprous oxide produces red, green or blue; Ferrous compounds produce green and black in large quantities; Iron (III) compounds produce yellow. When making glass, because the raw material contains ferrous impurities, it often makes the glass green. A small amount of manganese dioxide or selenium can be added to make it colorless glass

silk printing of glass

wholesale of glass silk printing accessories is to use silk screen printing plates and glass glazes to carry out decorative printing on glass products. Glass glaze, also known as glass ink and glass printing material, is a paste printing material mixed and stirred by coloring material and binder. The coloring material is composed of inorganic pigments and low melting point flux (lead glass powder); Binders are commonly known as board oil in the glass screen printing industry. After printing, the glass products should be fired in the furnace at a temperature of 520~600 ℃. The glaze printed on the glass surface can be consolidated on the glass, and the shape belt opens the workbench and moves upward to form colorful decorative patterns. If we combine silk screen printing with other processing methods, we will get a better effect. For example, using polishing, engraving, corrosion and other methods to process the glass surface before or after printing can double the printing effect. Glass products etching silk screen

for a long time, the etching decoration of glass products is to heat coat the wax layer and other reinforcement materials on the surface of the glass as a corrosion resistant layer, and then carve patterns on the coating with needles, knives, etc., exposing the surface of the glass, and then corrode this part with hydrofluoric acid. This process continues to be used by manufacturers, but its processing method is time-consuming, laborious and inefficient. The silk screen etching process makes the etching decoration of glass products simple, time-saving and labor-saving. The universal testing machine is used to stretch, shrink, zigzag, shear, peel and other mechanical properties of metallic and non-metallic materials. There are two methods of etching screen printing of glass: hot printing and cold printing. Thermoplastic etching silk screen printing is to add a small amount of anti-corrosion powder into the adhesive prepared by paraffin, asphalt, stearic acid, etc. to make anti-corrosion printing material, and then scrape the printing material to the glass surface through the hot printing silk plate according to the design drawing to form an anti-corrosion film. Some Korean jewelry wholesale with glass exposed on the resist film is the pattern that needs to be etched. Chlorofluoroic acid is used for etching. After etching, the anti-corrosion layer printed on the glass should be washed off with boiling water. Glass screen printing etching can also be carried out by cold printing. Special asphalt paint and anti-corrosion powder can be used for anti-corrosion printing materials. Rusty parts should also be cleaned and coated with protective oil or replaced with commercially available anti-corrosion ink. After printing, hydrofluoric acid corrosion can be carried out after the anti-corrosion film is completely dry. Hot printing is suitable for two-way continuous and four-way continuous patterns. Due to the etching according to the cleaning operation, cold printing is suitable for the etching of individual patterns