The Five Major Characteristics of PVB Laminated Glass

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Ordinary Laminated Glass

Ordinary laminated glass refers to laminated glass with annealed float glass as its substrate. It does not include bulletproof glass, aquarium glass, or multi-layer laminated glass.

PVB Laminated Glass

PVB interlayer film is a translucent film made of polyvinyl butyral resin plasticized and extruded with a plasticizer. It appears as a translucent film without impurities, has a smooth surface with a certain roughness and good flexibility, and exhibits excellent adhesion to inorganic glass. It features transparency, heat resistance, cold resistance, moisture resistance, and high mechanical strength. It is currently the best adhesive material for manufacturing laminated and safety glass worldwide, a standard upheld by top PVB laminated glass manufacturers. It is also widely used in building doors and windows, curtain walls, and various automotive and bulletproof glass fields.

PVB film has good elasticity, is relatively soft, and has a small shear modulus. After being subjected to force, there will be significant relative sliding between the two glass layers, leading to a smaller load-bearing capacity and greater bending deformation. At the same time, the exposed edges of PVB laminated glass are prone to moisture and delamination. Over time, PVB laminated glass is likely to turn yellow. Therefore, PVB laminated glass can be used for general building doors, windows, and curtain walls but is not suitable for high-performance building doors, windows, and curtain walls. Special laminated glass made with PVB film can better resist bullets, bombs, and violent attacks and can be called bulletproof or burglar-proof glass. PVB film is water-sensitive and will crack upon water contact, so when using laminated glass in projects, it is essential to ensure that the edges of the laminated glass are not exposed to the air. If the laminated glass must be exposed to air, the edges need to be sealed.

Five Main Features of PVB Laminated Glass

Safety

When subjected to external impact, the elastic interlayer absorbs the impact, preventing the object from penetrating through.

Anti-theft

PVB laminated glass is very tough. Even if a thief cracks the glass, the interlayer remains firmly adhered to the glass, maintaining its integrity and preventing the thief from entering.

Sound Insulation

Due to PVB film's damping effect on sound waves, PVB laminated glass effectively suppresses noise transmission, offering significant sound insulation benefits.

UV Protection

PVB film can absorb more than 99% of UV rays, protecting indoor furniture, plastic products, textiles, carpets, artworks, ancient artifacts, or commodities from fading and aging caused by UV exposure.

Energy Efficiency

Architectural laminated glass made with PVB film can effectively reduce solar transmittance. With the same thickness, laminated glass made with dark, low-transmittance PVB film has a stronger heat-blocking capability.

References

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