1. Frosting process
Frosting refers to immersing a glass bottle into a prepared acidic liquid (or smearing an acid paste) to erode the surface of the glass bottle 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 extremely smooth, and the crystals form a scattering and produce a hazy effect. If the surface is rough, it means that the acid erodes the glass more seriously, which is an immature performance of the frosting master. Or some parts are still not crystallized (commonly known as not sanded, or that the glass has mottling) also belongs to the master craftsmanship. This process is more difficult. This process is best manifested by the appearance of sparkling crystals on the surface of the glass, which is formed under a critical condition, mainly because ammonia hydrogen fluoride has reached the point of being consumed.
2. Sand blasting process
This process is very common. It uses the sand particles ejected from the spray gun to hit the surface of the glass bottle at a high speed, so that the glass bottle forms a fine concave and convex surface, so as to achieve the effect of diffusing light and making the light pass through. The surface of the glass product in the sand blasting process is relatively rough. Because the glass surface is damaged, it looks like white glass in the originally transparent glass. The craft difficulty is average.
The two processes are completely different processes. Frosted glass bottles are higher in cost than sandblasted glass bottles, and the effect lies mainly in the needs of users. Some unique glass bottles are also not suitable for frosting. From the perspective of pursuing nobleness, frosting should be used. The sandblasting process can generally be completed in factories, but it is not easy to achieve a good frosting process.
The frosted glass bottle is a sand feeling that is formed after production. The texture is strong, but the pattern is limited; the sandblasted glass bottle is first carved with paper according to the requirements and then the pattern is sprayed. In this way, any graphics you want can be engraved with a frosted ratio. The surface particle size of the sand is more delicate.