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qilu PVB 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.qilu PVB 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. | Classficationltems | 0.38mm | 0.76mm |
1 | Appearance | ||
1.1 | Appearances | Achromatic or slinghtly yellow lucid film With velvet surface that has no scar or crease . | |
1.2 | Dotted 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 | |||
2 | Size | ||
2.1 | Thickness ( mm ) | 0.38±0.02 | 0.76±0.02 |
2.2 | Uniformity | Horizontal thickness warp should not exceed 15um at a distance of 25mm; horizontal Ehickness warp Should not exceed 20um at a distance of 50cm. | |
2.3 | Length tolerance (m ) | 0-5 | 0-2 |
2.4 | Width tolerance ( mm ) | 0-20 | |
3 | Moisture ( % ) | 0.4-0.6 | |
4 | Extending intansion ( MPa ) | ≥20.0 | |
5 | Ruplura extending rate (%) | ≥200 | |
6 | Fograge (%) | <0.4 | |
7 | Shrinking rate (60/15min) ( % ) | ≤12 | |
0.38mm Ocean blue PVB film