1. The raw material of the double-layer glass 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 tube, and the inner and outer tubes are passed by the technician under the sealing machine. Baked, it is a new type of environmentally friendly teacup. Its main function is to play a role in heat insulation and anti-scalding, and has a certain heat preservation effect.
2.The thermos cup is generally a water container made of ceramic or stainless steel with a vacuum layer, with a lid on the top and a tight seal. The vacuum insulation layer can delay the heat dissipation of the liquid contained in the water and other liquids to achieve the purpose of heat preservation.
There are many layers in the thermos cup. Its sandwich layer is generally vacuum to prevent heat conduction, and then plated with silver to prevent heat radiation. Some cup lids have corks on them to prevent heat conduction.