High-Reflectivity Polyolefin Backsheets From Endurans

Endurans Solar has provided data for 3 coextruded polyolefin-based backsheets in the TaiyangNews Backsheets and Encapsulation Market Survey 2024/25. The company has updated its product portfolio by adding 2 new backsheets to its existing HP D15 model. While HP D15 is offered in white, the newly introduced HP D15HRB and HP D15BE are available in black. The HP D15HRB, launched in 2024, is a high-reflective backsheet.

All 3 non-fluoropolymer backsheets share the same configuration, manufactured using coextrusion with a polyolefin polymer chemistry. Endurans calls the configuration HPO (high-performance polyolefins, coextruded). All 3 backsheets have an effective thickness of 350 µm and a low water vapor permeability of 0.6 g/m²/d. HP D15HRB has a reflectivity of > 80% in the 700 to 1,100 nm range, while the HP D15 and HP D15BE feature a higher reflectivity of 95% in the 300 to 1,100 nm range on the EVA side. All 3 backsheets support a maximum system voltage of 1,500 V, rated with a dimensional stability and a shrinkage of less than 1% in both MD and TD directions, and an EVA peel strength of 4 N/mm. They have an elongation of 600% in both MD and TD directions (see Endurans Debuts POE Films With Crosslinking Cure).

The products boast a green tag, with Endurans stating they are ‘100% recyclable’ and have a 30% lower carbon footprint compared to fluorine-based laminated products. The company also highlights that its products have higher resistance to sand abrasion, making them suitable for desert applications. Packaging is offered in rolls, with storage conditions recommended at ≤30 °C and ≤50% relative humidity, ensuring a shelf life of 1 year.

For more product details from endurans, refer to the product description section of the report. The text is an excerpt from the TaiyangNews Market Survey on Backsheets & Encapsulation Materials 2024/25, which can be downloaded for free here.