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US 10,854,855 B2Granted
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 sum (A+B) of a value A of stress when 40% extended/stress when 10% extended in the direction MD and a value B of stress when 40% extended/stress when 10% extended in the direction TD of the laminate satisfying the relationship A+B≥2.50.
Claims14
A battery packaging material comprising a laminate comprising:
- a base material layer comprising at least one resin film layer consisting essentially of a polyamide resin,
- a metal layer, and
- a sealant layer 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 of the laminate by 40% to a stress in elongation of the laminate by 10% in the MD direction and a value B of a ratio of a stress in elongation of the laminate by 40% to a stress in elongation of the laminate by 10% in the TD direction,
- wherein the base material layer does not include polybutylene terephthalate.
2 more elements
A battery packaging material comprising a laminate comprising:
- a single base material layer that is a sole base material layer in the laminate, the single base material layer consisting essentially of a polyamide resin,
- a metal layer, and
- a sealant layer 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 of the laminate by 40% to a stress in elongation of the laminate by 10% in the MD direction and a value B of a ratio of a stress in elongation of the laminate by 40% to a stress in elongation of the laminate by 10% in the TD direction.
1 more element
A battery packaging material comprising a laminate comprising:
- a base material layer formed of a two layer resin film, a first layer consisting essentially of polyethylene terephthalate, and a second layer consisting essentially of a polyamide resin,
- a metal layer, and
- a sealant layer 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 of the laminate by 40% to a stress in elongation of the laminate by 10% in the MD direction and a value B of a ratio of a stress in elongation of the laminate by 40% to a stress in elongation of the laminate by 10% in the TD direction.
1 more element
Dependencies are inferred from the claim text.