BackSheet
Backsheet
Backsheet is a film that protects the back side of solar cell modules from the external environment. SKC manufactures its own fluorine film (PVDF), PET film, and adhesive that are required during production of the backsheet, guaranteeing excellent quality and competitiveness.
Applied Cases
Solar Power Generation
Solar module structure
Use
Back Protection for Solar Cell Modules
Product
| Product | Property |
|---|---|
| FPF (BF3GW) | Color : White/Black | Structure : PVDF/PET/PVDF | Thickness (micron) : 315 |
| FPE (BF3GE) | Color : White/Black | Structure : PVDF/PET/PE | Thickness (micron) : 330 |
| PPE42 (BQ3RE42) | Color : White/Black | Structure : PET/PET/PE | Thickness (micron) : 416 |
| PPE30 (BQ3RE30) | Color : White/Black | Structure : PET/PET/PE | Thickness (micron) : 301 |
| PPE38 (BQ3RE38) | Color : White/Black | Structure : PET/PET/PE | Thickness (micron) : 381 |
| PPE25 (BQ3RE25) | Color : White/Black | Structure : PET/PET/PE | Thickness (micron) : 244 |
| Co-Extrusion (BX2RE) | Color : White/Black | Structure : PET/PE | Thickness (micron) : 238 |
Approval
Technical Information
| Type | Property | Test Method | |||||
|---|---|---|---|---|---|---|---|
| Type | Unit | FPE | PPE30 | PPE42 | Co-Extrusion | ||
| Structure | PVDF/PET/PE | PET/PET/PE | PET/PET/PE | PET/PE | |||
| Color(Air/Cell side) | W/W, W/B | W/W, W/B | W/W, W/B | W/W, W/B | W(White) B(Black) | ||
| Thickness | µm | 330 | 301 | 416 | 238 | SKC Method | |
| Tensile Strenth |
MD | N/mm | >30 | >30 | >40 | >25 | ASTM D 882 |
| TD | N/mm | >35 | >40 | >50 | >25 | ||
| Elongation | MD | % | >100 | >100 | >100 | >100 | |
| TD | % | >80 | >80 | >80 | >80 | ||
| heat shrinkage |
MD | % | >1.5 | >1.5 | >1.5 | >1.5 | ASTM D 1204 (150°C 30min) |
| TD | % | >1 | >1 | >1 | >1 | ||
| Adhesive Strength(EVA) | N/mm | >60 | >60 | >60 | >60 | JIS K6854 | |
| Adhesive Strength(layer) | N/mm | >4 | >4 | >4 | >4 | ||
| WVTR | g/m2 Day | <1 | <1 | <1 | <1 | ASTM F1249 | |
| Breakdown Voltage | kV | >20 | >20 | >20 | >20 | ASTM D149 | |