| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a laminate film which is excellent in both the thickness deflection and moldability having conflicting properties causing a problem especially when used as for lithium battery outer packaging, and in which delamination is hard to occur.SOLUTION: A laminate film for battery outer packaging is characterized in that a polyester film having a thickness of 6 to 50μm, whose film elastic modulus E' at 120°C is 20 MPa or less and film elastic modulus E' at 180°C is 5 MPa is laminated on the single surface of a metal foil.</p> |
