Dai Nippon Printing Co., Ltd.

Dai Nippon Printingco., Ltd.

Daisuke Yasuda

Rikiya Yamashita

Takanori Yamashita

Atsuko Takahagi

Makoto Amano

Shinichiro Nakamura

Toshishige Kokuryo

Yosuke Hayakawa

Kaoru Tsumori

A casing material for a power storage device, including a laminate that includes, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer. The heat-fusible resin layer includes a single layer or a plurality of layers. The heat-fusible resin layer includes at least one layer having a hardness of at least 70 MPa from a cross-section in the lamination direction of the laminate, measured using a nanoindentation method using an indentation load of 100 μN.

Casing material for power storage device, production method therefor, and power storage device

A battery packaging material including a laminate that is provided with a barrier layer, a heat-fusible resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. When the infrared absorption spectrum on the surface of the polyester film in 18 directions at intervals of 10° from 0° to 180° is obtained using the total reflection method of Fourier transform infrared spectroscopy, the ratio (surface orientation degree, Y/Y) of the maximum value Yand the minimum value Yof the ratio (Y/Y) of the absorption peak intensity Yin 1340 cmand the absorption peak intensity Yin 1410 cmin the infrared absorption spectrum is in the range of 1.4-2.7.

Battery packaging material, production method therefor, battery, and polyester film

A casing material for a power storage device, including a laminate that includes, in order, at least a base material layer, a barrier layer, and a heat-fusible resin layer. The heat-fusible resin layer includes a single layer or a plurality of layers. A first heat-fusible resin layer, among the heat-fusible resin layers, that constitutes the surface of the laminate has a logarithmic decrement ΔE of no more than 0.20 in a rigid body pendulum measurement at 140° C.

A power storage device packaging material including a heat-sealable resin layer containing polypropylene and polyethylene, in which whitening and a decrease in the insulation properties due to molding are prevented. A laminate with at least a base material layer, a barrier layer, and a heat-sealable resin layer in this order from an outer side toward an inner side, wherein the heat-sealable resin layer contains polypropylene and polyethylene; a cross section of the heat-sealable resin layer in a thickness direction parallel to TD, a sea-island structure is observed in a cross-sectional image obtained with scanning electron microscope; the cross-sectional image is such that when the total thickness of a layer positioned closer to inner side than the barrier layer is taken as 100%, the cross-sectional image is obtained within a range of thicknesses of up to 12.5% from a surface opposite to the barrier layer side of the heat-sealable resin layer.

Power storage device packaging material, method for producing the same, and power storage device

Provided is a packaging material for batteries, which has excellent insulating properties. A packaging material for batteries, which is formed of a laminate that is obtained by sequentially laminating at least a base layer, a bonding layer, a metal layer and a sealant layer, and wherein the base layer comprises a resin layer A that is formed of a thermoplastic resin having a volume resistivity of 1×10Ω·cm or more.

Packaging material for batteries

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.

Packaging material for battery

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.

A battery packaging material including a laminate that is provided with a barrier layer, a heat-fusible resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. When the infrared absorption spectrum on the surface of the polyester film in 18 directions at intervals of 10&#xb0; from 0&#xb0; to 180&#xb0; is obtained using the total reflection method of Fourier transform infrared spectroscopy, the ratio (surface orientation degree, Y/Y) of the maximum value Yand the minimum value Yof the ratio (Y/Y) of the absorption peak intensity Yin 1340 cmand the absorption peak intensity Yin 1410 cmin the infrared absorption spectrum is in the range of 1.4-2.7.

A technology for improving molding properties while minimizing curling after molding in a battery packaging material comprising a laminate that is provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. This battery packaging material is configured from at least a laminate provided with a barrier layer, a heat-sealable resin layer positioned on one surface side of the barrier layer, and a polyester film positioned on the other surface side of the barrier layer. The birefringence of the polyester film is in the range of 0.016-0.056.

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&#x2212;A2)&#x2265;60 N/15 mm; and (B1&#x2212;B2)&#x2265;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.

Provided is a packaging material for batteries, which has excellent insulating properties. A packaging material for batteries, which is formed of a laminate that is obtained by sequentially laminating at least a base layer, a bonding layer, a metal layer and a sealant layer, and wherein the base layer comprises a resin layer A that is formed of a thermoplastic resin having a volume resistivity of 1&#xd7;10&#x3a9;&#xb7;cm or more.

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Tokyo, Japan

Daisuke Yasuda