What is the term for two sheets of ordinary glass bonded to a plastic layer for extra security?

The correct term for two sheets of ordinary glass bonded to a plastic layer for extra security is laminated glass. Laminated glass consists of layers of glass that are held together by an interlayer, commonly made of polyvinyl butyral (PVB) or a similar material. This construction not only provides increased strength and impact resistance but also has safety features; if broken, the broken pieces tend to remain adhered to the interlayer rather than shattering and posing a danger.

Tempered glass, on the other hand, is treated with heat to make it stronger than normal glass, allowing it to shatter into small, less dangerous pieces when broken, but it does not employ a plastic layer for bonding two sheets. Plastic-coated glass refers to a layer of plastic applied to a single sheet of glass for enhanced properties, while plate glass simply refers to flat glass produced in large sheets without any special treatments. Understanding these distinctions is important in assessing the correct applications and advantages of each type of glass in security and safety contexts.