Packaging material for battery
AssigneeDai Nippon Printing Co., Ltd.
InventorsAtsuko Takahagi, Rikiya Yamashita, Daisuke Yasuda
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Abstract
A packaging material for batteries including a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in order. The battery packaging material satisfies the relationships of: (A1−A2)≥60 N/15 mm; and (B1−B2)≥50 N/15 mm. A1 is a stress in elongation by 10% in the MD direction and B1 is a stress in elongation by 10% in the TD direction in the laminate, and A2 is a stress in elongation by 10% in the MD direction and B2 is a stress in elongation by 10% in the TD direction in the base material layer.
Claims16
A battery packaging material comprising a laminate in which at least a base material layer, a metal layer, an adhesive layer, and a sealant layer are laminated in this order,
- the laminate satisfying the relationship of A+B≥2.50, where A+B is a sum of a value A of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the MD direction and a value B of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the TD direction.
A method for producing a battery packaging material, the method comprising:
- preparing a laminate in which at least a base material layer, a metal layer, and a sealant layer are laminated in this order,
- wherein the laminate satisfies the relationship of A+B≥2.50, where A+B is a sum of a value A of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the MD direction and a value B of a ratio of a stress in elongation by 40% to a stress in elongation by 10% in the TD direction.
Dependencies are inferred from the claim text.