Product Name:EPEU307*C* & EPET306*C* & EPET309*C* (EPE) ACID FREE EPE (EVA-POE-EVA) FILMS
Product Explanation:
This series of EVA films is a fast-curing product, especially suitable for encapsulating TOPCON and HJT solar cells
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Low acid release, active protection for metals, widely compatible with N-type solar cell pastes and HJT solar cells.
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High volume resistivity, excellent anti-PID performance across various solar cells.
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The products have good compatibility with different brands of glass, backsheets, solder tapes, silver pastes and positioning tapes, as well as equipment.
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Wide adhesion adaptability, excellent adhesion with TOPCON/HJT solar cells.
Technical Specification (Dr. HWC-EPEU307*C* & EPET306*C* & EPET309*C* Fast Cure)
| Properties | Unit | EPEU307*C* | EPET306*C* | EPET309*C* |
|---|---|---|---|---|
| Product Use | / | TOPCON/HJT | HJT | |
| Product Type | / | UV Cut-off | UV Through | UV to Blue light |
| Shrinkage | % | MD≤3.0; TD≤1.0 | ||
| Transmittance (380-1100nm) | % | ≥91 | ||
| UV Cut-off Wavelength | nm | 360nm/380nm(HJT) | UV Through | UV to (400-500)nm |
| Gel Content | % | ≥75 | ||
| Volume Resitivity | Ω.cm | ≥1.0×1015 | ||
| Dielectric Strength | KV/mm | ≥28.0 | ||
| CTI (Comparative Tracking Index) | V | ≥600 | ||
| Adhesion | N/cm | ≥65 | ||
| Tensile Strength | MPa | ≥10 | ||
| Elongation At Break | % | ≥600 | ||
| UV Aging | / | ΔYI≤4.0 (120KWh/m²) | ||
| Component Power Loss | % | ≤5 (IEC G2804) | ||
| Humidity and Heat Resistance | / | ΔYI≤4.0 | ||
Films testing standard according to GB/T 29848-2018, PID test condition: 85°C, RH85%, -1500V, 192h
Recommended Lamination Process
| Lamination Parameters | Single Chamber | Double Chamber | |
|---|---|---|---|
| First Chamber | Second Chambe | ||
| Temperature (ºC) | 140-155 | 130 - 140 | 145 - 155 |
| Vaccum (min) | 6 - 3 | 4 - 7 | 0 - 3 |
| Press (KPa) | -60/-30/-10 | -30~0 | -30~0 |
| Keep Press (min) | 15~10 | 2~6 | 8~15 |
In the actual lamination process, the cross-linking degree reaches the design value and the component yield is high as a guideline, which is adjusted according to the actual working conditions on site.