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    • 9. 发明专利
    • FACING BODY FOR BATTERY
    • JPH11149909A
    • 1999-06-02
    • JP31360397
    • 1997-11-14
    • SHOWA DENKO KK
    • KAGEYAMA YOHEIYOTSUYANAGI JUNJIHIRATA MOTOYUKINAKAMURA MANABU
    • H01M2/02
    • PROBLEM TO BE SOLVED: To improve electrolyte resistance properties, sealing properties, and long period safety by comprising a laminate film consisting of at least four layers in which a polyolefin layer, a metal foil layer, a barrier resin layer, and a second polyolefin layer laminated in order by processing the second olefin layer inwardly in bag shape. SOLUTION: As a barrier resin layer, a metal oxide vapor-deposited polyethylene telephthalate or the like is preferred. A facing body is obtained by comprising a laminate film by processing a second polyolefin film on an inner face side in bag shape, and thermally fusing a peripheral edge part except an insert part of a battery content. In particular, from the viewpoint of sealing properties, an fused, that is, envelope-shaped produced bag in which longitudinal direction (a back pasting part) of a film is superimposed is preferred. In this case, a superimposed part of the back pasting is thermally fused by a high-frequency inductive heating method, and an end face of an inward metal foil layer of the superimposed part is preferred to be covered by the polyolefin layer.