Laminated glass holds together when shattered because of the interlayers that are sandwiched in between two pieces of glass or more. In the event of breaking, it is held in place by this interlayer, typically of polyvinyl butyral (PVB) or SentryGlas®.
The interlayer keeps the layers of glass bonded even when broken, and its high strength prevents the glass from breaking up into large sharp pieces. This produces a characteristic “spider web” cracking pattern when the impact is not enough to completely perforate the glass.
Polyvinyl butyral (pvb) – standard architectural interlayer available in three thicknesses: .030”, .060”, .090”
SentryGlas® – an ionoplast interlayer bonded directly between two layers of glass for superior protection. The rigid interlayer minimizes deflection.
Available interlayer thicknesses: .060″, .090″, .100″