BPF-805 PV Backsheet
- BPF-805 is a PET/aluminum foil composite photovoltaic backsheet with excellent insulation, bonding strength, low water vapor transmission, and damp-heat resistance, providing long-term reliable protection for solar cells.
- With a total thickness of 348±5%, MD/TD tensile strength ≥120 MPa, volume resistivity ≥1×10¹⁶ Ω·cm, and WVTR ≤0.001 g/m²·d, it is ideal for PV module encapsulation solutions requiring high barrier performance, strong insulation, and long-term reliability.
Get a Free Consultation
Get a Free Consultation
|
Performance Indicators |
Test Standard | BPF-805 | |
|
Total Thickness |
/ | 348±5%μm | |
|
Colour |
/ | White | |
|
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 (150℃×30min) |
MD | GB/T 13542.2-2021 | ≤0.6% |
| TD | GB/T 13542.2-2021 | ≤0.6% | |
|
Coating Adhesion (grade) |
GB/T 9286-2021 | grade 0 | |
|
Bond Strength With EVA /POE (initial) |
GB/T 2790-1995 | ≥60N/10mm | |
|
Volume Resistivity |
GB/T 1410-2006 | >1*10^16 Ω·cm | |
|
Interlayer Peel Strength |
GB/T 2790-1995 | ≥4N/cm | |
|
WVTR |
GB/T 26253-2010 | ≤2.0g/m²·d | |
|
System Voltage |
GB/T 1408.1-2016 | DTI≥300um | |
|
Damp Heat Aging Test (85℃×85%RH, 2000h） |
IEC TS 62788-2 | No delamination, no bubbles, Δb≤2 | |
|
Boiling Water Treatment |
Visual Inspection | GB/T 17748-2008 | No delamination, no bubbles, no wrinkling, no peeling, no chalking |
| Coating Adhesion(Grade) | GB/T 9286-1998 | Grade 0 | |
|
Yellowness Index after Aging |
JESD22-A102-C | Δb≤2 | |
|
DH2000 |
IEC TS 62788-2 | Elongation At break≥40%,YI△b≤2 | |
|
UV Aging 250KWH |
IEC TS 62788-2 | Elongation At break≥90%,YI△b≤2 | |
