BPF-801 PV Backsheet
- BPF-801 is a double-sided coated PET photovoltaic backsheet featuring a hydrolysis-resistant PET core layer and weather-resistant resin surface layers. It delivers excellent insulation, bonding, abrasion resistance, and weatherability.
- With a total thickness of 314±5%, tensile strength ≥120 MPa, breakdown voltage ≥20 kV, WVTR ≤2.0 g/m²·d, and reflectance ≥70%, BPF-801 provides reliable rear-side protection and long-term damp-heat resistance for BC, high-reflective all-black aesthetic modules, and other PV applications.
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| Performance Indicators | Test Standard | BPF-801 | |
| Total Thickness | / | 314±5%μm | |
| Structure | / | Coating/PET/Coating | |
| Colour | / | White/Black | |
| Fluorine Content | / | Fluoropolymer Coating/Fluoropolymer Free | |
| Tensile Strength | MD | GB/T 13542.2-2021 | ≥120MPa |
| TD | GB/T 13542.2-2021 | ≥120MPa | |
| Elongation at Break | MD | GB/T 13542.2-2021 | ≥100% |
| TD | GB/T 13542.2-2021 | ≥90% | |
| Heat Shrinkage Rate | MD | GB/T 13542.2-2021 | ≤1.0% |
| TD | GB/T 13542.2-2021 | ≤1.0% | |
| Coating Adhesion (grade) | GB/T 9286-2021 | grade 0 | |
| Bond Strength With EVA /POE (initial) | GB/T 2790-1995 | ≥60N/10mm | |
| Breakdown Voltage | GB/T 1408.1-2016 | ≥20kV | |
| Maximum System Voltage | GB/T 16935.1-2008 | 1500V | |
| WVTR | GB/T 26253-2010 | ≤2.0g/m²·d | |
| Reflectivity | ASTM-E424-71 | ≥70% | |
| Transmittance | ASTM-E424-71 | / | |
| Damp Heat Aging Test (85℃×85%RH, 2000h) | GB/T 2423-2016 | No delamination, no bubbles, Δb≤2 | |
| Boiling Water Treatment | Visual Inspection | GB/T 31034-2016 | No delamination, no bubbles, no wrinkling, no peeling, no chalking |
| Coating Adhesion(Grade) | GB/T 9286-2021 | Grade 0 | |
