Blast-resistant glass is based on an ideal combination of the rigidity and compressive strength of glass with the plasticity and energy-absorbing properties of polymer interlayers, such as PVB. The classification ER1 to ER4 depends on the corresponding amount of TNT simulated in a controlled shock-tube test mechanism, penetrating the glass by the pressure of a real-life explosion. The glass should remain in the test frame to prevent the glass from becoming a weapon and harming people on the safe side.
Did you know that the shock wave of an explosion can transform standard glass into deadly projectiles? Blast-resistant glass is designed to be flexible and remains in its tested frame by absorbing the force of blast waves according to the respective blast resistance classification.