HD-SG-F / HD-SG-S / HD-SG-N / HD-SG-T
HD-SG
Reflectivity above 80% and water transmission below 0.5 g/m²·day, in constructions from 540 µm to 1000 µm.
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Structural Protection Layer
PRG/AGR
HD-PGR / HD-AGR
Withstands a 25 mm ball at 16 m/s with ≤5% power degradation, and over 1000 kWh/m² UV resistance.
Hail is what kills glassless modules, and it does not kill them by breaking the surface. The impact travels through to the cells and leaves micro-cracks that show up months later as a yield shortfall nobody can trace.
The prepreg layer is the impact absorber that stops that. At 100–160 µm it sits between the front sheet and the cells, taking a 25 mm ball at 16 m/s with no significant visual defect and power degradation held to 5% or less.
Why this one
- High impact resistanceWithstands impact from a 25 mm diameter ball at 16 m/s without significant visual defects and with ≤5% power degradation.
- Weather resistance above 1000 kWh/m² UVWith damp-heat UV above 120 kWh/m² — double the UV figure of the CPC/CDPC structural sheet.
- Organic material replaces glassLightweight construction without the structural penalty of removing the glass.
- Over 90% light transmittanceAn impact layer that sits in the optical path has to be effectively invisible, and this one is.
Specification
| Product Structure | Prepreg Layer: 110μm, Impact Resistance and Adhesion | |
|---|---|---|
| Product Type | Insulating back sheet for crystalline silicon terrestrial photovoltaic (PV) modules | HD-HGR |
| Product Code | HD-HGR | |
| Product Name | Transparent | |
| Thickness | Prepreg:100μm~ 160um | |
| Color | Transparent |
Values as published by the manufacturer. Tolerances and roll formats are confirmed in writing per order.
Storage and shelf life
High storage stability; warranty period is three months under cool, dry storage. Storage below 40°C and under 35% humidity is recommended, and laminating process generality should be evaluated after that period.
Applications
- Anti-cracking layer in C&I lightweight modules
- Automotive-integrated modules
- Carport and gas station canopies
- Balcony modules
Supplied from
Suzhou, Jiangsu, China — and PT. Hondol Material Indonesia, Batam, for customers served from Indonesia.
Questions about PRG/AGR
Why is the storage period only three months?
Prepreg is a partially cured material, so its shelf life is genuinely shorter than a finished film. Store below 40°C and under 35% humidity, and re-evaluate lamination behaviour after three months.
Where does it sit in the stack?
Between the front film and the cells, as the anti-cracking layer — for example ETFE front film, HD-PGR prepreg, HD-SG-P backplate.
What thickness is supplied?
The prepreg layer runs 100 µm to 160 µm, with a 110 µm nominal construction for impact resistance and adhesion.
Related products
Same series first, then the rest of Lightweight PV Solutions.
HD-CPC-T / HD-CDPC-FT
CPC/CDPC
Organic material in place of glass, over 90% transmittance, UV resistance above 500 kWh/m².
View specification →
C&I Distributed Lightweight Modules
Up to 23.0% deliverable efficiency in a module light enough for a roof that was surveyed as non-load-bearing.
View specification →
Automotive-Used PV Modules
−40°C to 150°C, continuous high-frequency vibration, 15 years or 250,000 km.
View specification →Get PRG/AGR quoted against your own construction.
Send the module format, the annual volume and the destination market. The reply carries the price, the lead time and the certificate.