What is Laminated Glass?
Laminated glass is a type of safety glass with interlayer films. When the glass is breaking, the shards will be stick on the interlayer film, and the surface of the glass remains clean and smooth. This characteristic effectively prevents the occurrence of debris piercing and penetrating fall incidents and ensures personal safety.
How it’s made? How many types of laminated glass?
Laminated glass is a composite glass product made by two or more pieces of glass with polymeric film between them. The glass and the interlayer permanently bonded together after a special high-temperature pre-pressing (or vacuuming) and high-temperature and high-pressure process. Commonly, the interlayer materials for making laminated glass are polyvinyl butyral (PVB), ethylene-vinyl acetate (EVA), thermoplastic polyurethane (TPU), etc.
PVB interlayer has high transparency and a high melting point, widely used in glass curtain walls. Most architectural glass is PVB interlayer.
The production process of EVA interlayer is simpler than PVB. As a result, the cost is lower, but the melting point is low, so only part of the indoor partition, decoration, and solar photovoltaic glass can use EVA laminated glass.
SGP interlayer is a high-strength intermediate film, it resists the impact of hurricanes and gravel on the glass. As a result, its main applications are glass lighting roofs, glass exterior windows, and curtain walls.
What are the benefits of laminated glass?
Safety
The middle layer film can maintain the adhesion between the glass layers even when it is broke, and its high strength can prevent the glass from breaking into splashing sharp pieces. Thus, laminated glass can reduce damage and ensure personal safety.
Anti-invasion
The laminated glass has earthquake resistance and impacts resistance ability. It can resist the continuous attacks of weapons such as hammers and choppers. Moreover, it can withstand the penetration of bullets within a certain time.
Anti-noise
The acoustic PVB, EVA, and TPU interlayer films can block sound waves, isolating 1000Hz-2000Hz coincident noise that can penetrate ordinary glass. As a result, it can provide a quiet and comfortable space.
Block UV
The interlayer films can block nearly all ultraviolet radiation. For example, A thermoset EVA film can block up to 99.9% of all UV rays. As a result, it protects people’s skin health and prevents the fading of furniture display items caused by sunlight. It can also reduce the transmission of sunlight and reduce cooling energy consumption.
What kind of glass product can use laminated glass?
Multiple glass applications use laminated glass for higher safety levels, such as building windows, curtain walls, glass doors, shop windows, overhead glass, and daylighting ceilings.
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