Polyvinyl Butyral (PVB) is a commonly used interlayer film in laminated glass production. It is a thermoplastic material that is made from polyvinyl alcohol and butyral resin.
PVB is known for its high strength and durability, making it a popular choice for applications where laminated glass is subject to high impact and stress, such as in bulletproof glass and safety glazing. PVB is a stiff and rigid material, which helps to provide a high level of protection against shattering and breakage.
A significant advantage of PVB interlayer film is its UV resistance. It effectively blocks out harmful UV rays, which makes it an ideal choice for applications where UV protection is a priority, such as in skylights and conservatories. Additionally, PVB is also resistant to moisture and chemicals, ensuring the longevity and durability of laminated glass products.
Ethylene Vinyl Acetate (EVA) is a thermoplastic polymer that is widely used as an interlayer film in laminated glass due to its high elasticity and transparency.
EVA is a soft and flexible material that is easy to handle and process, making it an ideal choice for large-scale laminated glass production. Its high transparency allows for maximum light transmission and minimizes visual distortion, making it suitable for a wide range of applications, including automotive windshields and architectural glass.
One of the main advantages of EVA interlayer film is its high adhesive strength. It bonds well to both glass and other materials, which helps to ensure the durability and longevity of laminated glass products. Furthermore, EVA is also resistant to moisture and chemicals, which makes it suitable for use in harsh environments.