Safety glass - DuPont SentryGlas

Sharda are laminated safety glass suppliers. Safety glass is a type of glass which is designed to resist breaking, and to break in a way which minimizes the risk of injuries in the event that the glass cannot withstand the forces which are exerted on it. Safety glass manufacturers have developed two ways in which safety glass can work: tempering or laminating. Tempered glass is made by treating the glass very carefully as it is heated and cooled to increase its tensile strength, making it hard to break. If tempered glass does break, it snaps apart into rounded chunks, rather than breaking up into jagged pieces which could potentially be very dangerous. People who have seen a broken side window in a car have probably seen an example of tempered safety glass.

Laminated safety glass is made by sandwiching a sheet of polyvinyl butyral (PVB) in between two pieces of glass. The glass is stronger because of the layering and reinforcement, and when it does break, the plastic essentially acts like tape, holding the glass in place instead of allowing the sharp shards to fall.