There are several appearances of the quality defects of ordinary flat glass
There in the flat glass some prominent particles, called big lump or small stones, called sand. It mainly affects the optical properties of glass and makes it difficult to cut glass.
If molten glass contains gas, it forms bubbles when it is formed. Bubbles mainly affect the transmittance of glass, reduce the mechanical properties of glass, but also affect people's vision, resulting in deformation of the biological image, the main reason is that the purity of raw materials is not enough.
The wave bar, also called the water line, is the most vulnerable and the most serious defect in the appearance defects of glass. It can cause optical distortion of glass and cause visual fatigue or visual illusion of the observer. There are many reasons for the wave reinforcement, mainly due to the backward production process and chemical composition and excessive impurity content.
