| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminate for battery exterior package which is arranged to reduce the drop in the lamination strength of aluminum foil and an innermost layer, and the occurrence of delamination owing to the degradation in an electrolytic solution of a lithium ion battery, and which allows an outer container to be manufactured with a high yield.SOLUTION: A laminate for battery exterior package has aluminum foil and a resin layer laminated in turn. In the laminate for battery exterior package, a base material layer 11 including two layers consisting of a polyethylene terephthalate (PET) film and a polyamide film layer, the aluminum foil 12, an epoxy group-containing polyolefin resin layer, and an innermost layer 13 composed of a polypropylene or polyethylene layer are laminated in turn; a thin film coating layer 14 made of a water-soluble resin or its copolymer resin is put on at least innermost layer surface of the aluminum foil 12. The epoxy group-containing polyolefin resin layer bonds between the thin film coating layer 14 and the innermost layer 13. |
