| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an exterior material for a lithium ion battery having excellent moldability in which a laminate film is used in a base material layer. <P>SOLUTION: In an exterior material 1 for a lithium ion battery, a base material layer 11, an adhesive agent layer 12, a metal foil layer 13, a corrosion protection processing layer 14, an adhesive resin layer 15, and a sealant layer 16 are laminated sequentially. In the base material layer 11, a first biaxially stretched film 11A and a second biaxially stretched film 11B are laminated so that the direction of larger tensile strength out of the 45 degree direction and the 135 degree direction for the extension direction of the first biaxially stretched film 11A is aligned with the direction of smaller tensile strength out of the 45 degree direction and the 135 degree direction for the extension direction of the second biaxially stretched film 11B. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
