PVB interlayer is translucent membrane, by polyvinyl butyral resin after plasticizer plasticizingextrusion forming of a kind of polymer material. Appearance as semi-transparent film,without impurities, with smooth surface, has a certain roughness and good softness, with inorganic glass hasqood adhesive power, transparent, heat- resistant,cold resistant,resistant to wet and mechanicalstrength highercharacteristic,lt is the world manufacturing laminated, safety glass which widelyused to be the best adhesive materials in building curtain wall, recruit, window, bank counter,prisontent out of Windows, and various kinds of bulletproof glass furnaces screen, and other areas of thebuilding.