double wall glass

Glass cups can be divided into single-layer glass cups, double-layer glass cups, crystal glasses, glass office cups, glass mouth cups, etc. Double-layer glass, as the name suggests, is a glass that is divided into two layers during production, which can insulate and prevent scalding when used. The raw material of the double-layer glass is high borosilicate glass, which is food-grade and restaurant-grade glass. It is fired at many degrees of high temperature. It is usually made of high-borosilicate glass tubes. The inner and outer tubes are baked by technicians under a sealing machine. Cheng, a new type of environmentally friendly tea cup, is becoming more and more popular among people.
In terms of style, it is divided into mouth cups and office cups. In terms of material, the cup tubes used include ordinary glass tubes and crystal glass tubes. According to the production process, there are double-layered glasses with tails and double-layered glasses without tails. Double-layered glasses with tails have a small drop on the bottom of the cup, while glasses without tails are flat and have no remaining spots. From the mouth of the cup, there are standard cups and high-mouth glasses. From the bottom of the cup, we can distinguish ordinary thin bottom, thick round bottom, thick straight bottom and crystal bottom.