The discrimination is mainly by hand touch, the matte feel is smooth, and the rough feel is sandblasted.
Brushing and sandblasting are used to obscure the glass surface, so that the light forms a relatively uniform diffuse scattering. It is difficult for ordinary users to distinguish these two processes. The following describes the manufacturing methods of the two processes and how to identify them.
1. Frosting process: Frosting refers to immersing glass in a prepared acidic liquid (or smearing an acid paste) to erode the glass surface with strong acid, and at the same time, hydrogen fluoride in strong acid solution causes crystals to form on the glass surface. Therefore, if the frosting process is done well, the frosted glass surface is exceptionally smooth, and the haze effect is produced by the formation of scattering by the crystals. If the surface is rough, it means that the acid erodes the glass more seriously, which is an immature performance of the frosting master.
2. Sand blasting process: This process is very common. It uses high-speed sand particles from the spray gun to hit the glass surface, forming a fine concave and convex surface of the glass, so as to achieve the effect of scattering light and making the light pass through. The surface of the glass product in the sandblasting process is relatively rough. Because the glass surface is damaged, it looks like the white glass in the originally exposed glass. The craft difficulty is average.
The two processes are completely different processes. Frosted glass is more expensive than sandblasted glass, and the effect is mainly based on user needs. Some unique glasses are also not suitable for frosting.