architectural Grade Clear PVB film
Overview
What is Architectural PVB Film
PVB film is a strong adhesive, well-known for its properties as high transparency, Heat-resisting, cold-resistant, moisture-proof, and irradiation resistance. Insulation and high mechanical strength and nice adhesive material for laminated glass.
PVB film is a high molecular polymer made from PVB resin and plasticizer, with different additives according to different applications, and formed through plasticization and extrusion by the extruder.
Compared with EVA film, PVB film is more suitable for long-term outdoor use.
PVB laminated glass
Application of PVB interlayer film
PVB Film Specification
| Thickness | 0.38mm; 0.76mm; 1.14mm; 1.52mm |
| Length | 400m/roll; 200m/roll; 130m/roll; 100m/roll; |
| Width | 600-2700mm |
| Roughness Rz | 20-50 |
| Moisture content(%) | 0.35-0.55 |
| Heat shrinkage rate (60℃/15min)(%) | ≤12.0; ≤8.0; ≤6.0; ≤5.0; |
| Pummel value | ≥7 |
| Visible light transmittance (%) | ≥85(clear) |
| Haze (%) | ≤0.6(clear) |
| Tensile strength (MPa) | ≥20.0 |
| Tensile elongation (%) | ≥200 |
| Yellowness index (%) | ≤10 |
produce standard
| Surface | Smooth surface without Nick, Crease, Bond |
| Color | Clear/green/blue/yellow/gray/violet/milk white/brown/ocean blue/others |
| Crystallite and Watermarks | Crystallite diameter exceeding 2.0mm is not allowed. No visible watermarks. |
| Visible defects(impurities, bubbles, oil drops, etc.) | Defects’ diameter exceeds 0.5mm and allowed a maximum of 6 defects each 200m; Defects diameter exceeding 0.5mm to tag on PVB film; diameter less than 0.5mm in the intensive defects area*must marked as one defect. The defects marks and places should be shown in the packing list. |
| Thickness tolerance（mm） | 0.38±0.02mm; 0.76±0.04mm; 1.14±0.06mm; 1.52±0.08mm |
| Uniformity ratio | At any two points from a 25mm distance either horizontally or, vertically the thickness tolerance is less than 15μm; (or 50mm-less than 25μm; or 100mm-less than 50μm) |
| Intensive defects area | Within the 300mm diameter circle, the defects are over 10, and its interval is less than 5mm. |
Packing
Each layer of PVB film is separated by PE film and vacuumed in an aluminum foil bag, then put into a plywood box.
STORAGE
Should store in a clean warehouse under an ordinary temperature. No direct sunlight. When the vacuum package is opened, it should be stored in a place with a temperature of 15℃-25℃, and humidity of 20%-40%.
TRANSPORTATION
Avoid direct sunlight, rain, and strong shake during transportation.