PVB film is a macromolecule material coming from Polyvinyl Butyric resin together with DHA plasticizer. PVB film is normally 0.2mm to 2mm thick and it can agglutinate tightly with inorganic glass. PVB film is mainly used in laminated glass that presses a layer of PVB film between two pieces of glass. Laminated glass is widely used in areas such as architecture and automobile.
PVB Film Properties: Safety Penetration Resistance Light Control Anti-ultraviolet Soundproof
Item 0.38mm 0.76mm 1.Appearance 1.1 Appearances Achromatic or slightly yellow clear film, smooth surface without scar or crease 1.2 Dotted sundries and air bubbles ≤0.05mm2
>0.05mm2 Allowed to exist separately but not to exceed 10 places per roll Not exceeding 8 places per roll Not exceeding 10 places per roll 2. Size 2.1Thickness(mm) 0.38±0.02 0.76±0.02 2.2Uniformity Horizontal thickness warp should not exceed 15μ at a distance of 25mm; Horizontal thickness warp should not exceed 20μ at a distance of 50mm; 2.3Length tolerance(m) 0-5 0-2 2.4Width tolerance(mm) 0-20 3.Moisture content(%) 0.4-0.6 4.Tensile strength(MPa) ≥20.0 5.Rupture extending rate(%) ≥200 6.Haze(%) <0.4 7.Shrinkage rate(60ºC/15min)(%) ≤10