PVB-Zwischenschicht

qiluPVB interlayer is a macromolecule material molded by polyviny, butyral resin that is plasticized and extruded by plasticity. Our PVB film with excellent light transparency, heat and cold resistance, elasticity, is well-sticking to inorganic glass and the making of laminated safety glass. Usual thickness specification is between 0.2 mm - 2 mm. qiluPVB interlayer is mainly used in making laminated safety glass. Laminated glass is a special glass which is inserted with PVB film between two layers of common glass, which under high heating temperature and pressure, binds to create a single construction. Because of PVB laminated glass with the function of safety, heat preservation, noise proof, and ultraviolet resistance, etc, it is widely used in areas such as high-rise building and auto. PVB film with special formula is also used in aeroplane, space flight ware, military instrument, solar battery, solar energy acceptor and so on. No. Classfication ltems 0.38mm0.76mm1Appearance 1.1Appearances Achromatic or slinghtly yellow lucid film With velvet surface that has no scar or crease . 1.2Dotted waste sundries and air buhbles ≤0.05 Allowed if exist separately 0.05 Not exceeding 8 places per film Not exceeding 5 places per film Making marks Define an extanded 0.5 metar film per place Add one extra meter par place 2Size 2.1Thickness ( mm ) 0.38±0.02 0.76±0.02 2.2Uniformity Horizontal thickness warp should not exceed 15um at a distance of 25mm; horizontal Ehickness warp Should not exceed 20um at a distance of 50cm. 2.3Length tolerance (m ) 0-50-22.4Width tolerance ( mm ) 0-203Moisture ( % ) 0.4-0.64Extending intansion ( MPa ) ≥20.05Ruplura extending rate (%) ≥2006Fograge (%) <0.47Shrinking rate (60/15min) ( % ) ≤12