
PVB interlayer is translucent membrane, by polyvinyl butyral resin after plasticizer plasticizing extrusion forming of a kind of polymer material. Apperance as semi-transparent film, without impurities, with smooth surface, has a certain roughness and good softness, with inorganic glass has good adhesive power, transparent, heat-resistant, cold resistant, resistant to wet and mechanical strenghth higher characterisitic.

THE MAIN TECHNICAL PARAMETER OF PRODUCT |
Density |
1.069 g/cm³ |
Transmittance |
≥88.5% (Note1) |
Refractuve Index |
1.47-1.50 (Note 1) |
Tensile Stre |
≥20Mpa (Note 2) |
Elongation at break |
≥200% (Note 2) |
Moisture |
0.35-0.55% (Note 3) |
Ration of shrinkage |
<6% (Note 4) |
Test of strike |
3-9 (Note 1) |
Deviation of width |
expected value +10mm |
NOTE:
1. Colorless glass (2mm)+ interlayer film (0.38)+ Colorless glass (2mm).
2.Measurement under conditions of 20℃ and 40% relative humidity.
3.It is be able to adjust according to customer's requirment's.
4.Measurement after 15 minutes under the conditions of 40℃ and 40% relative humidity.
5.The date of interlayer film of HI (Automotive windshields) and ST (Architectural glass) are different, both samples should be tested with -18℃ after 2 hours.
PVB interlayer is the world manufacturing laminated, safety glass which widly used to be the best adhesive materials in building curtain wall, recruit, window, bank counter, prison tent out of Windows, and various kinds of bulletproof glass furances screen, and other areas of the building.