| abstract |
The present invention relates to an exterior material for an electrical storage device, which has a metal foil layer and a second adhesive layer in which at least a base material layer, a first adhesive layer, and an anticorrosive treatment layer are provided on one or both surfaces in the following order. An outer covering material for a power storage device having a structure in which a layer or an adhesive resin layer and a sealant layer are formed, wherein the sealant layer contains a layer formed of a resin composition containing (A) propylene-ethylene 60 to 95% by mass of the random copolymer, and 5 to 40% by mass of the polyolefin-based elastomer having a melting point of 150 ° C or less, which is a comonomer of (B) 1-butene. |