Standard Explosion-Proof Glass
Standard explosion-proof glass is a special type of glass made by strengthening a single sheet of float glass. The strengthened surface provides strong resistance to violent impacts. As the glass thickness increases, its explosion-proof effect improves. The thickest thickness is generally 20 mm. For glass thicker than 20 mm, achieving the required strengthening process in one go is difficult. Therefore, users considering standard explosion-proof glass should exercise caution.
Once standard explosion-proof glass breaks, it shatters into fragments and cannot effectively withstand secondary impacts from wind pressure or heavy objects. Strictly speaking, standard explosion-proof glass is not a true "explosion-proof glass."
Reinforced Explosion-Proof Glass
Reinforced explosion-proof glass is made by sandwiching a strong PVB film between two or more sheets of float glass. These sheets are pressed together in a hot press to remove as much air as possible, and then placed in a high-pressure steam autoclave where high temperature and pressure dissolve any remaining air into the film. In the domestic market, explosion-proof glass is predominantly 300mm x 300mm square or larger. Manufacturers capable of producing smaller sizes are extremely rare. These ultra-small explosion-proof glass units are widely used in underground coal mine rescue capsules, and due to the high complexity of the manufacturing process, they are consistently expensive.
Reinforced explosion-proof glass thicknesses are primarily: 8mm-10mm, 12mm-14mm, 16mm-18mm, 20mm-22mm, 24mm-26mm, 30mm-32mm, and 38mm-40mm.
