MULTILAYER FILM, BACK SHEET FOR SOLAR CELL MODULE, AND SOLAR CELL MODULE

摘要

A multilayer film which is characterized by comprising a polyester supporting body, a first adhesive layer that is laminated on at least one surface of the polyester supporting body, and a second adhesive layer that is laminated on a side opposite to the polyester supporting body with respect to the first adhesive layer. This multilayer film is also characterized in that: the polyester supporting body has an average film thickness of 50-300 μm; the first adhesive layer contains a modified polyolefin resin that is a copolymer of ethylene, a (meth)acrylate and an acid anhydride; the second adhesive layer contains an olefin resin; and the total of the average film thicknesses of the first adhesive layer and the second adhesive layer is 0.001-0.3 times the average film thickness of the polyester supporting body. This multilayer film contains adhesive layers that have both adhesion to EVA and adhesion to the polyester supporting body, and is suppressed in the occurrence of blocking and curling of the multilayer film itself.