Packaging material for power storage device and power storage device using the same
AssigneeToppan Printing Co., Ltd.
InventorsTakuya Muraki, Shunsuke Nakanishi
Life of this patent
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Abstract
A packaging material for a power storage device includes a structure made up of a cover layer, a barrier layer, a sealant adhesive layer, and a sealant layer laminated in this general order. In the packaging material, the barrier layer has an aluminum foil layer and an anticorrosion treatment layer that is provided to a sealant layer side surface of the aluminum foil layer and faces the sealant adhesive layer. The sealant layer side surface of the aluminum foil layer has a 60° glossiness that is 690 or less in both MD and TD, and has a difference in 60° glossiness between MD and TD that is 100 or less.
Claims10
A packaging material for a power storage device, comprising:
- a structure made up a cover layer, a barrier layer, a sealant adhesive layer, and a sealant layer laminated in this general order, wherein the sealant layer is configured to be a layer, which is innermost to the power storage device;
- wherein the barrier layer includes an aluminum foil layer and an anticorrosion treatment layer that is provided to a sealant-layer-side surface of the aluminum foil layer and directly physically contacts the sealant adhesive layer;
- wherein the aluminum foil layer in a state of being provided with the anticorrosion treatment layer has a 60° glossiness that is 590 or less in both MD, which is a direction of extrusion, and TD, which is a direction vertical to MD;
- and
- wherein the aluminum foil layer in a state of being provided with the anticorrosion treatment layer has a difference in 60° glossiness between MD and TD that is 55 or less.
Dependencies are inferred from the claim text.