| abstract |
It is including that at least successively lamination has, in the battery use packing material of the membranaceous laminated body of substrate layer, adhesive layer, metal layer and sealant the invention reside in providing a kind of, when molding is not susceptible to crackle and pin hole, the technology with excellent mouldability.A kind of battery use packing material, by at least successively lamination has the laminated body of substrate layer, adhesive layer, metal layer and sealant to constitute, the value of stress when stress/elongation 5% when extending 50% on the value A of stress when stress/elongation 5% when above-mentioned substrate layer extends 50% in the MD direction and the direction TD B's and (A+B) meet relationship below: A+B >=3.5. |