How does bulletproof glass work?

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How does bulletproof glass work?




When a normal pane of glass is struck, there is nothing to absorb the energy, and the weakly-bonded particles break apart, allowing a bullet to travel directly. To prevent this from happening often, hard, lexible plastic sheets, often Polyvinyl butyrals (PVBs) are sandwiched in between, and heated repeatedly and are known to tear the two together. When a bullet moves, the glass layers break. Normal, but as they break, force is absorbed and intermittently diffused by strong and lexible PVB. This slows the bullet down, preventing it from passing. The broken glass pieces stick to the plastic, causing them to lie away and cause injury.

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