There are many types of glass, generally divided into single-layer glass, double-layer glass, crystal glass, glass office cup, glass cup and so on. Double-layer glass, as the name suggests, is a glass that is divided into two layers during production, which can play a role in heat insulation and anti-scalding when in use. Its raw material is high borosilicate glass, food-grade catering-grade glass, which is fired at a high temperature of more than 600 degrees. It is usually made of high-borosilicate glass tubes, and the inner and outer tubes are baked by technicians under the sealing machine.
2. Is the double-layer glass insulated?
The double-layer glass is mainly for the function of heat preservation and heat insulation. At the same time, it can also save ice cubes. Many glass manufacturers have double-layer ice buckets. The vacuum double-layer cup with a compartment is generally blown by hand, and the middle layer is not vacuum at all. There is an air outlet at the bottom of the outer layer of the cup to exhaust gas during the blowing process and prevent the cup from deforming and bursting. After the production is completed, the holes are sealed. There is gas in the middle. If it is a vacuum, it will make a loud noise after the cup is broken, and it will blow up glass fragments, which will easily hurt people.
Post time: Aug-02-2022