Laminated glass is a type of safety glass that holds together when shattered. In the event of breaking, it is held in place by an interlayer, typically of polyvinyl butyral (PVB), between its two or more layers of glass.
Laminated Glass Process
PVB laminated glass is manufactured by combining two or more annealed or heat treated glass sheets bonded with one or more of PVB interlayers and subjected to heat and pressure, in order to ensure perfect adhesion between the constituent elements.
In glass skylights, sunspaces, sloped glazing installations and curtain walls, there is always the possibility of glass breakage. This is why many building codes worldwide use laminated glass for overhead glazing. It is used in schools, hospitals, hotels and office buildings, and wherever there are sound control requirements.
Advantages of Laminated Glass
- The principal feature of Laminated safety glass is that the interlayer absorbs the energy impact and hence resists penetration.
- Laminated glass proves an excellent barrier to noise, it has better Sound Transmission Loss as compared to glass of similar thickness
- Laminated glass provides excellent reduction in the Solar Gains as well as reduction of sound transmission through the window
- UV absorbing additives in the interlayer in laminated glass can screen out almost all these damaging rays.
- Laminated glass can be designed to remain intact and in its frame during the disasters
- Laminated glass is durable, it maintains its color and its strength for a very long time.
- Laminated Glass is usually glazed in an annealed form, avoiding the distortion caused by roller waves in the tempered and heat strengthened glass