What is the main feature of laminated glass?

The main feature of laminated glass is that it consists of a thin plastic sheet, usually polyvinyl butyral (PVB), sandwiched between two layers of glass. This construction provides several important benefits.

Firstly, the laminate creates a bond that holds the glass layers together, even when broken, which helps prevent shattering into jagged pieces. Instead, the glass tends to stay adhered to the plastic layer, making it safer for occupants in buildings and vehicles. Secondly, this design improves sound insulation and can also provide some level of ultraviolet (UV) light protection, making laminated glass a popular choice for windows and safety glass applications.

The other options do not accurately describe laminated glass. While glass can melt when subjected to extreme heat, laminated glass does not "melt away" in the traditional sense; rather, the protective qualities of the laminate help it retain its integrity during such situations. Reinforcement with wire mesh is characteristic of wired glass, not laminated glass. Finally, laminated glass is specifically designed to avoid shattering into sharp shards, which is another advantage over standard glass types.