Polyvinyl butyral (PVB) is a type of plastic commonly used as an interlayer in laminated glass. It is known for its excellent adhesion, clarity, and flexibility, making it ideal for applications in automotive windshields and safety glass. PVB helps hold glass layers together, providing strength and reducing the risk of shattering. In addition to its use in glass, PVB is also utilized in coatings and adhesives. Its ability to absorb sound and resist UV light makes it valuable in various industries, including construction and electronics. Overall, PVB plays a crucial role in enhancing safety and durability in many everyday products.