| abstract |
The lithium ion battery packaging material 1 of the present invention has a rigidity and chemical resistance and has a first thermoplastic resin layer 11 disposed on the outside, a second thermoplastic resin layer 12 having stress generality and adhesiveness, and toughness. The base material layer 10 comprised by the film which biaxially stretched the multilayer coextrusion film containing the 3rd thermoplastic resin layer 13 which has, the outer side contact bonding layer 14 laminated | stacked on one side of the said base material layer 10, and On the metal foil layer 15, the anti-corrosion treatment layer 16 laminated on the metal foil layer 15, the inner adhesive layer 17 laminated on the anti-corrosion treatment layer 16, and the inner adhesive layer 17. The laminated sealant layer 18 is provided. |