Even if the glass fragments, debris will be stuck on the film, broken glass surface remains clean and smooth. This effectively prevents the debris from piercing and penetrating the fall event, to ensure personal safety.
In Europe and the United States, most of the architectural glass are laminated glass, not only in order to avoid injury, but also because the laminated glass has excellent seismic capacity. The middle membrane can resist the continuous attack of the weapon such as the hammer, the chopping knife and so on, but also can resist the bullets penetrating in quite long time, its security guarding degree is extremely high.
The glass breaks safely and may break down under heavy ball impact, but the glass remains intact, and fragments and sharp small pieces stick to the interlayer. This broken glass, the debris will not be scattered, and more used in vehicles and other means of transport.
Toughened glass requires a large impact force is broken, once broken, the whole piece of glass burst into numerous fine particles, the framework of only a little broken glass.
Ordinary glass a hit on the broken, the typical crushing situation, resulting in many strip-shaped sharp-hole debris.
Wire glass broken, the lens-shaped pieces of debris surrounded the hole, and left in the penetration point of more pieces of glass around the broken metal wire length.