Causes and Solutions of Rainbow Ripples on Glass

Rainbow is cute, but I believe no one likes rainbow spots on the glass. Analyze the cause and solution of rainbow spots on the Home Decor Glass.

What is a Glass Rainbow Spot?

Strips, blocks and other colors resemble rainbow-colored stripes on glass, which are called Glass Rainbow Spots. The probability of rainbow spots appearing on Tempered Glass is generally higher than that of Ordinary Float Glass.

There are two common cases of glass rainbow markings:

Firstly, Glass rainbow spots caused by uneven distribution of Toughened Glass stress

The compressive stress that the Tempered Float Glass forms on the surface layer of the glass, and the tensile stress that forms on the inside of the glass have a difference in density from the surface to the center, at different positions of the same surface layer. The macroscopically irregular arrangement of atoms causes the Tempered Glass to be anisotropic. When a polarized light passes through a tempered glass, this makes the path through which visible light passes a tortuous path. Due to the difference in optical density inside the glass, the light is split into two polarized lights with different propagation speeds. One beam is light that travels relatively fast, and one beam is light that travels at a relatively slow speed. When two light beams formed at a certain point intersect with a light beam formed at another point, there is a phase difference at the intersection of the light beams due to the difference of the light propagation speed, and at this point, the two light beams will produce an interference phenomenon when the direction of beams and the light's amplitude is the same, the light is strengthened, resulting in a visually bright field of view that is rainbow streak. Therefore, the more uneven the stress distribution of the Tempered Toughened Glass, the more pronounced is the rainbow speckle phenomenon produced on the surface.

For rainbow spots where the glass stress distribution is uneven, the solution is to make the temperature of each area of the glass uniform and uniform before the glass is air-cooled, keep the cooling rate and the wind speed uniform during the air-cooling process, and reduce the glass thickness. The appearance of rainbow markings.

Secondly, the glass produced by mildew caused by mildew

In the process of storage and transportation, even during installation and use, glass is exposed to water vapor or other chemical products. Rainbow spots, white spots and white fog may easily appear on the surface of the glass, resulting in decreased transparency and reduced gloss.

The glass rainbow spots produced in this case can be found in time to use 8% hydrofluoric acid for cleaning or use a glass mold remover for cleaning, which can achieve a good removal effect. If it is not treated for a long time, it will cause the glass rainbow spots to be difficult to remove.