| 摘要 |
PROBLEM TO BE SOLVED: To provide a packaging material for battery case which enhances the electrolyte resistance of a packaging material for battery case where a heat-resistant stretched resin layer, an adhesive layer, an aluminum layer, and a thermoplastic non-stretched resin layer are laminated.SOLUTION: The aluminum layer of a packaging material for battery case having a structure where a heat-resistant stretched resin layer, a first adhesive layer, an aluminum layer, and a thermoplastic non-stretched resin layer are laminated sequentially has a chromium layer or a chromium oxide layer formed at least on the thermoplastic non-stretched resin layer side surface. The chromium layer or a chromium oxide layer is preferably deposited by vacuum deposition. |
