A layered product having a structure comprising a protective layer, a base layer, and a sealant layer which have been superposed in this order, wherein the base layer and the sealant layer include polyethylene and the protective layer includes a thermoset resin or a resin having a melting point of 160 degrees centigrade or higher, the proportion of the polyethylene in the layered product being 90 mass percent or higher.

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