Guangzhou tempered laminated glass factory, can the safety performance of laminated glass withstand impact and breakage?


Release time:

Mar 14,2025

Laminated Glass Structure's Resistance to Impact

Laminated Glass (18)

Laminated glass consists of two or more sheets of glass firmly bonded together by an interlayer of PVB (polyvinyl butyral) film or other similar bonding material. This structure gives the glass higher strength and toughness. When impacted, the external force first acts on the outer layer of glass. Because glass itself has a certain hardness, it can withstand a certain degree of impact force.

Meanwhile, the interlayer acts as a buffer, with good viscoelasticity that can absorb and disperse some of the impact energy. For example, in daily life, when a small object accidentally hits laminated glass, the outer layer of glass may deform to some extent, but the buffering effect of the interlayer prevents the glass from breaking immediately, effectively protecting indoor personnel and objects from direct harm.

Laminated Glass (17)

  Safety After Breakage

If laminated glass is subjected to a strong impact and breaks, its safety advantages become even more significant. Ordinary glass, when broken, forms sharp fragments that can easily cause serious injury to people.

However, when laminated glass breaks, due to the bonding effect of the interlayer, the broken glass fragments adhere tightly to the interlayer and do not fly around. Even if the glass is extensively broken, it can still maintain a certain degree of integrity and will not completely scatter like ordinary glass.

Laminated Glass (16)

For example, in some high-rise buildings, laminated glass is used in windows. If the glass breaks due to external force, the broken glass will remain within the window frame, greatly reducing the risk of high-altitude falling objects injuring people and ensuring the safety of pedestrians.

In addition, in the event of natural disasters such as earthquakes, this characteristic of laminated glass can also prevent broken glass from causing secondary harm to indoor personnel, providing a relatively safe environment for personnel evacuation and rescue.