BPF-801M PV Backsheet
- BPF-801M is a coated grid-pattern photovoltaic backsheet with black grid printing on a white CPC-structure backsheet, enhancing light utilization and power output while supporting module appearance design.
- With an outer layer/PET inner layer/grid structure, it features a total thickness of 318±5%, MD/TD tensile strength ≥120 MPa, breakdown voltage ≥20 kV, WVTR ≤2.0 g/m²·d, and white coating reflectance ≥70%. It combines high reflectance, reliable insulation, strong bonding, and long-term damp-heat resistance.
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|
Performance Indicators |
Test Standard | BPF-801M | |
|
Total Thickness |
/ | 318±5%μm | |
|
Structure |
/ | Coating/PET/Coating+Mesh | |
|
Colour |
/ | White/Black | |
|
Fluorine Content |
/ | Fluoropolymer Coating | |
|
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 | ≥100% | |
|
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 | Coating≥60N/10mm, mesh≥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 (380mm-1100nm) |
ASTM-E424-71 | White coating ≥70% | |
|
Transmittance (380mm-1100nm) |
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 | |
