How Safety Glass Works
Toughened safety glass has undergone a heat treatment, making it up to 5 times stronger than standard glass of the same thickness. If the glass does break, it will fracture into thousands of small, relatively harmless particles.
Laminated safety glass is made by applying a plastic interlayer between two (or more) panes of glass. If the glass is broken these interlayers hold the glass in place. The glass still breaks into pieces, but they remain stuck to the interlayer.