Dai Nippon Printing Co., Ltd.

Dai Nippon Printingco., Ltd.

Tetsuya Ojiri

Rikiya Yamashita

Tsuyoshi Suzuki

Kazuhiko Yokota

Masakazu Kandori

Takanori Yamashita

Fumihiro Arakawa

Makoto Amano

Hiroshi Kishida

Yohei Hashimoto

Yoichi Mochizuki

Kenji Kanda

Shunsuke Ueda

Yukihiro Kyoden

Hirotoshi Sakamoto

Yaichiro Hori

Yousuke Hayakawa

Kaoru Miyazaki

Hiroki Douke

Atsushi Nagai

Yoshihiro Shinohara

Provided is a cell packaging material having a high insulating performance and durability. A cell packaging material comprising a layered body provided with at least a substrate layer, a metal layer, an adhesive layer, and a heat-fusible resin layer in the stated order. The adhesive layer has a resin composition that contains an acid-modified polyolefin and an epoxy resin. In probe displacement amount measurements involving the use of a thermal mechanical analyzer, when a probe is placed on the surface of the adhesive layer at an end part of the cell packaging material and the probe is heated from 40&#xb0; C. to 220&#xb0; C., the position of the probe does not drop in relation to the initial value.

Cell packaging material, method for manufacturing same, and cell

A battery packaging material has a very thin aluminum alloy foil with a thickness of not more than 40 &#x3bc;m, in which pinholes or cracks are unlikely to occur during molding, which has excellent moldability and appearance after molding, which is unlikely to be erroneously determined to be a defective product, and which makes highly accurate defect determination possible. The battery packaging material includes a stacked member provided with at least, in this order: a base material layer; an aluminum alloy foil layer; and a heat sealable resin layer, wherein: the aluminum alloy foil layer has a thickness of not more than 40 &#x3bc;m; the aluminum alloy foil layer is an aluminum alloy conforming to JIS standard A8021; and the aluminum alloy has a maximum crystal grain size of not more than 25 &#x3bc;m, and an average crystal grain size of not more than 10 &#x3bc;m.

Battery packaging material, method for manufacturing same, method for determining defect during molding of battery packaging material, and aluminum alloy foil

A battery packaging material includes a laminate that includes at least a base material layer, a metal layer, an insulating layer, and a sealant layer laminated in this order. The insulating layer is formed of a resin composition containing a modified polyolefin resin modified with an unsaturated carboxylic acid or acid anhydride thereof and has a hardness, when measured by using a nanoindenter and pressing an indenter 5 &#x3bc;m into the insulating layer from a cross-section of the laminate in the laminating direction thereof, that ranges from 10 MPa to 300 MPa. In the sealant layer, an elastic modulus, when measured by using a nanoindenter and pressing an indenter 5 &#x3bc;m into the sealant layer from a cross-section of the laminate in the laminating direction thereof, ranges from 100 MPa to 1000 MPa.

Power-cell packaging material

A battery packaging material has an excellent ink printing characteristic on a base-layer-side surface. This battery packaging material has a laminated body formed by sequentially stacking at least a base layer, a metal layer, and a sealant layer, with the wet tensile strength of the surface of the base layer being 32 mN/m or greater.

Battery packaging material

Presented is battery packaging material which is made of a laminate including, as the essentials, a base material layer, a metal layer and a sealant layer in this order. When a product obtained by packaging a battery element with the packaging material in a hermetically sealed state through heat sealing is heated, the packaging material delaminates at least at a part of the interface between the metal layer and the outside surface of the sealant layer with the hermetically sealed state being kept, and thereafter works so as to make the product unsealed.

A power-cell packaging material including a layered body obtained by layering at least a substrate layer, a metal layer, an insulating layer, and a sealant layer, in this order. The insulating layer has a hardness in the range of 10-300 MPa, when measured by using a nanoindenter and pressing the indenter 5 &#x3bc;m into the insulating layer from a cross-section of the layered body in the layering direction thereof.

An electromagnetic wave shielding filterincludes a meshed layer, wherein at least one of the front and back surfaces of the meshed layer is subjected to a blackening treatment to be a blackened face having micro-irregularities. The shape of the micro-irregularities is adjusted to have a probability density curve with a peak point being convex upward wherein the probability density curve is defined as a curve depicted in a graph in which the change of height from the peak value Rp to the bottom value Rv of the deepest valley is shown as the horizontal axis while the probability density expressing the distribution of height is shown as the vertical axis. Also, in the probability density curve, a horizontal tangent can be drawn at its peak point.

Electromagnetic wave shielding filter

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Tokyo, Japan

Tetsuya Ojiri