Cybrid features 2 fluoropolymer backsheets—FPf and KPf—both transparent with distinct structures with proprietary fluorine coatings
Both models offer high tensile strength, peel adhesion above 6 N/mm, 17 kV breakdown voltage, and reflectivity of 55% across 380 to 1,100 nm
The designs aim to reduce delamination risk and cost through simplified mono-layer construction and material-wide UV and hydrolysis resistance
Cybrid, a leading supplier of fluoropolymer-based backsheets, has streamlined its product portfolio in the 2024/25 TaiyangNews Backsheets and Encapsulation Market Survey. The company now lists only two transparent backsheets—FPf and KPf—while discontinuing 11 products featured in the previous edition.. The company has provided data for 2 products while discontinuing 11 from the previous survey. Both products currently listed are transparent backsheets with distinct structures – FPf and KPf – where the ‘f’ denotes a fluorine skin, a proprietary characterization of the company's fluorine coating.
The KPf-Transparent backsheet is built with a 20 μm PVDF film as an outer layer and a 4 μm-thin fluorine coating on the cell side, sandwiching the 285 μm thick universal PET core film. FPf is another specialty product from Cybrid that is a coating backsheet with a 12 μm coating on the air side and 4 μm on the cell side, topped with a 4 μm reflective grid (mesh) sandwiching a 288 μm PET layer. The backsheet has an effective thickness of 310 μm.
Most of the other specifications for these products are identical – a water vapor permeability of 1.9 g/m²/d, a tensile strength of 175 MPa in the MD and 165 MPa in the TD direction, and elongation values of 125% (MD) and 110% (TD). Both products exhibit the same EVA peel strength of greater than 6 N/mm and a breakdown voltage of 17 kV, with partial discharge values exceeding 1,500 V DC. These products are designed for a maximum system voltage of 1,500 V. Both backsheets have a rated reflectivity of about 55% within the spectral band of 380 to 1,100 nm.
According to Cybrid, the key features of these products include the absence of delamination due to the mono-layer structure, high reflectivity, UV and hydrolysis resistance across the entire material thickness, and a manufacturing process designed to reduce costs.
The text is an excerpt from the latest TaiyangNews Market Survey on Backsheets & Encapsulation Materials 2024/25, which can be downloaded for free here.