| abstract |
Provided is an adhesive film for a metal terminal that has high adhesion to a packaging material and a metal terminal, and further has excellent resistance to an electrolytic solution. An adhesive film for a metal terminal interposed between a metal terminal electrically connected to an electrode of a battery element and a packaging material for sealing the battery element, wherein the adhesive film for a metal terminal is And a laminate comprising at least one polypropylene layer and at least one acid-modified polypropylene layer, and the acid-modified polypropylene layer constitutes a surface layer on at least one side of the metal terminal adhesive film. When the cross-section of the polypropylene layer is observed with an electron micrograph, the sea-island structure is observed, and when the total thickness of the acid-modified polypropylene layer is 1, the total thickness of the polypropylene layer is The adhesive film for metal terminals in the range of 0.7 to 3.5. |