During the melting of the glass bottle glass, various salts and the like in the powder are decomposed at a high temperature, and a large amount of gas evolved is continuously removed from the melt. The melt enters the clarification stage and continues to exclude air bubbles. In order to accelerate the elimination of air bubbles, high temperature melting is generally used to lower the viscosity of the glass liquid, or to add a substance that lowers the surface tension, or to lower the pressure in the kiln to cause bubbles to escape. However, some bubbles still remain in the glass, or bubbles are formed due to the interaction between the glass and the furnace gas, and the bubbles are not eliminated in time.
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