Exterior material for power storage device, manufacturing method therefor, and power storage device
AssigneeDai Nippon Printing Co., Ltd.
InventorKen MURASAWA
Life of this patent
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Abstract
An exterior material for a power storage device, the exterior material being configured from a layered body that includes at least a substrate layer, a barrier layer, and a thermally fusible resin layer in this order, wherein in the thermally fusible resin layer, the molecular weight that is the peak value in a differential molecular weight distribution curve measured using high-temperature gel permeation chromatography is 150,000 or greater.
Claims32
An exterior material for electrical storage devices comprising a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer in this order, wherein
- the heat-sealable resin layer having a molecular weight of 150,000 or more in terms of a peak value in a differential molecular weight distribution curve obtained by high-temperature gel permeation chromatography measurement.
An exterior material for electrical storage devices comprising a laminate including at least a base material layer, a barrier layer and a heat-sealable resin layer in this order, wherein
- a Martens hardness is 10.0 MPa or more as measured on the basis of an indentation method with a Vickers indenter pressed to a depth of 1 μm in a thickness direction from a surface of the exterior material for electrical storage devices on the heat-sealable resin layer side at a measurement temperature of 100° C.
A method for manufacturing an exterior material for electrical storage devices, the method comprising the step of laminating at least a base material layer, a barrier layer and a heat-sealable resin layer in this order to obtain a laminate, wherein
- the heat-sealable resin layer having a molecular weight of 150,000 or more in terms of a peak value in a differential molecular weight distribution curve obtained by high-temperature gel permeation chromatography measurement.
Dependencies are inferred from the claim text.