Abstract: The disclosure discloses a method for preparing a high-reflection solar cell backsheet film, which uses a twin-screw extruder to prepare a masterbatch of an adhesive layer, a masterbatch of a barrier layer, and a masterbatch of a high-reflection layer, and then uses four single-screw extruders to melt the three masterbatches at 250° C. and extrude through a lip film of a casting head. A non-woven fabric is added as a base layer between the two barrier layers, so that the two barrier layers are extruded through the lip film and integrally formed on surfaces of the non-woven fabric. After being cooled to room temperature by a cooling roller, a highly reflective solar cell backsheet is obtained.

Abstract: A solar cell backsheet includes a weathering layer, a first adhesive layer, a polyethylene terephthalate (PET) layer, a second adhesive layer, and a functional layer. The weathering layer, the first adhesive layer, the PET layer, the second adhesive layer, and the functional layer are arranged in said sequence. The functional layer includes a milky layer and a transparent layer, the milky layer and the transparent layer being integrally formed.