TECHNOLOGY FOCUS - POLYMERS - Preferred Parameters: In producing the film for a solar cell back sheet, the volume fraction of the white pigment in the aqueous composition for the white layer is 50-200% relative to the first aqueous binder, and the aqueous composition for the white layer is applied to the substrate film such that a coating thickness of the aqueous composition for the white layer is 4-20 mu m, and a coating amount of the white pigment is in a range of from 3-10 g/m2. The content of the inorganic oxide filler is in a range of 5-400% by mass relative to a total amount of the first aqueous binder in the aqueous composition for the white layer. The light reflection ratio of the surface side of the substrate film at which the white layer and the adhesive protective layer are formed is 70% or higher with respect to light having a wavelength of 550 nm. Preferred Method: The method further comprises applying an aqueous composition for a weather resistant layer comprising at least one of a fluorocarbon resin or a silicone-acrylic composite resin, to a surface opposite to the surface at which the white layer and the adhesive protective layer are formed. Preferred Components: The aqueous composition for the white layer further comprises at least one surfactant. The first aqueous binder and the second aqueous binder respectively independently comprise at least one selected from polyolefin, polyurethane, polyvinyl alcohol, (meth)acrylic polymer and polyester. The aqueous composition for the adhesive protective layer further comprises an inorganic oxide filler. The substrate film comprises polyester. The aqueous composition for the white layer further comprises at least one oxazoline compound as a cross-linking agent for the first aqueous binder. Preferred Film: The film for the solar cell back sheet further comprises a weather resistant layer comprising a coating film of an aqueous composition for the weather resistant layer comprising at least one of a fluorocarbon resin or a silicone-acrylic composite resin, and provided on a surface opposite to the surface at which the white layer and the adhesive protective layer are provided. EXAMPLE - No suitable example given.