Also known as laminated glass, two or more pieces of float glass are sandwiched with a strong PVB (ethylene polymer butyrate) adhesive film, pressed by a hot press, and the middle air is exhausted as far as possible. Then it is put into a high-pressure steam kettle, and a safety glass is made by using high temperature and high pressure to dissolve a small amount of residual air into the adhesive film.
Inorganic non-metallic materials -> Glasses