In the history of the glass to create the multi-layered glazing Laminated glass (triplex) revolutionized. Helped to expand the use of glass in buildings as it can cover larger areas at higher buildings with high security features.

Laminated glass is a safety glass consisting of two or more sheets of glass glued together by one or more layers polyvynilovoutiraliou films (PVB). Initially placed the membrane (or membranes) PVB between the glass sheets and then all together subjected to heat and pressure inside the furnace, so that the PVB films are integral with the glasses.

When you break an ordinary glass, numerous, irregular, sharp and sharp pieces which can cause serious injuries. But when we break a laminated glass fragments remain stuck on the membrane, and thus avoid the risk of injury from fragments. Also the windows do not collapse to stay void space preventing burglaries and damage from strong wind and rain.

The strength and other properties such as the multi-layered glass can be customized to meet specific needs. Other substrates can reduce noise and others can be helpful in the glass to function more as a structural composite. The multilevel glazing can combine security with aesthetics and energy savings.

Apart from its main use is to protect and the multilevel security glazing can satisfy additional architectural requirements which include:

- Energy efficiency