Showa Denko Packaging Co., Ltd.

Toagosei Company, Ltd.

Tetsunobu Kuramoto

Yuuji Minamibori

Yuji Minamibori

Takahiro Ito

Koji Minamitani

Kensuke Nagata

Makoto Karatsu

Takashi Nagaoka

Makoto Imahori

Junya Komano

An outer casing material for a batteryis provided, wherein an outer layer, a metal foil layerand an inner layerare laminated via an adhesive layer; the inner layercomprises a sealant layerand a base material layer; the sealant layeris made from a propylene-ethylene random copolymer wherein a melt flow rate at 230&#xb0; C. thereof is in a range of 3 to 30 g/10 minutes; the base material layeris made of a resin composition wherein a melt flow rate at 230&#xb0; C. thereof is in a range of 0.1 to 15 g/10 minutes, xylene-soluble component Xs thereof satisfies the predetermined conditions, and the resin composition comprises 50 to 80% by mass of a propylene component (A) and 50 to 20% by mass of a copolymer component (B) which is an elastomer of a copolymer of propylene and ethylene and/or &#x3b1;-olefin having 4 to 12 carbons and includes 50 to 85% by mass of a polymerization unit originated from propylene.

Outer casing material for battery and lithium secondary battery

A molding packaging material excellent in interlaminar lamination strength is provided, in which it is possible to prevent deterioration of the interlaminar strength due to influences of electrolytes and also possible to prevent deterioration of the interlaminar strength due to influences of heat generation and/or expansion/contraction of the packaging material caused by repetition of charging/discharging. The molding packaging material of the present invention includes a heat resistant resin layeras an outer layer, a polypropylene layeras an inner layer, a metal foil layerarranged between the heat resistant resin layer and the polypropylene layer, wherein at least an inner side surface of the metal foil layeris subjected to a chemical conversion treatment, and the polypropylene layeris laminated on the chemical conversion treatment surface of the metal foil layer via an adhesive layer, wherein the adhesive layeris formed by applying an adhesive to the chemical conversion treatment surface of the inner side surface of the metal foil layer, the adhesive containing at least an organic solvent, a polyolefin resin having a carboxyl group in which the organic solvent is dissolved and an MFR measured at 130&#xb0; C. is 5 g/10 min to 42 g/10 min, and a multifunctional isocyanate compound.

Molding packaging material and method for producing same

A battery exterior body which can be easily manufactured without additional process by heat-sealing internal layers of battery exterior materials, and has a high degree of safety with respect to gas generated in the inside of the exterior body, a method of manufacturing the battery exterior body, and a lithium secondary battery are provided. The battery exterior body is a battery exterior bodywhich is formed by heat-sealing internal layersof battery exterior materialsformed by laminating an external layerincluding a heat-resistant resin film, a metal foil layer, and the internal layerin this order, and has a sealing strength between the heat-sealed internal layersof 20 N/15 mm of width to 50 N/15 mm of width.

Battery exterior body, method of manufacturing battery exterior body, and lithium secondary battery

A package for a power storage device includes a metal foil layer, an insulation layer laminated on at least center portion of one surface of the metal foil layer, and a heat-sealable resin layer arranged one surface of the metal foil layer or a region corresponding to a periphery of the one surface of the metal foil layer. With this, thinning, weight saving, and shortening of the production time can be attained.

Package for power storage device and power storage device

Provided is a molding packaging material that can have an increased use life, can suppress a decrease over time in inter-layer lamination strength, and has superior molding properties in extrusion molding, draw forming, and the like. The laminate molding packaging material contains: an outside substrate layer () comprising a heat-resistant resin; an inside sealant layer () comprising a thermoplastic resin; and a metal foil provided between the two layers as a barrier layer (). In the heat-resistant resin of the outside substrate layer (), a biaxially oriented polyethyleneterephthalate film is used that, when the tensile breaking strength in the M direction is MB and the tensile breaking strength in the T direction is TB, the following are satisfied: formula (I) 500 MPa=MB+TB=700 MPa; and formula (II) &#xa6;MB&#x2212;TB&#xa6;=30 MPa.

Molding packaging material and battery case

Provided is a molding packaging material that can have an increased use life, can suppress a decrease over time in inter-layer lamination strength, and has superior molding properties in extrusion molding, draw forming, and the like. The laminate molding packaging material contains: an outside substrate layer () comprising a heat-resistant resin; an inside sealant layer () comprising a thermoplastic resin; and a metal foil provided between the two layers as a barrier layer (). In the heat-resistant resin of the outside substrate layer (), a biaxially oriented polyethyleneterephthalate film is used that, when the tensile breaking strength in the M direction is MB and the tensile breaking strength in the T direction is TB, the following are satisfied:500 MPa==700 MPa; and&#x2003;&#x2003;formula (I)||=30 MPa.&#x2003;&#x2003;formula (II)

Provided is a molding packaging material that can have an increased use life, can suppress a decrease over time in inter-layer lamination strength, and can have superior molding properties in extrusion molding, draw forming, and the like. The laminate molding packaging material contains: an outside substrate layer () comprising a heat resistant resin; an inside sealant layer () comprising a thermoplastic resin; and a metal foil provided between the two layers as a barrier layer (). A matte coat layer () comprising a heat resistant resin coating film containing a dispersion of inorganic or organic solid microparticles is formed on the outer surface of the outside substrate layer (), and the gloss value of the surface thereof is suppressed to no greater than 30%.

A molding packaging materialof this invention contains a biaxially stretched polyamide film layeras an outer layer, a thermoplastic resin layeras an inner layer, and a metal foil layerdisposed between the both layersand, in which a biaxially stretched polyamide film in which when the fracture strength of the film is defined as 'X' and the fracture strain of the film is defined as 'Y', the X/Y value is 230 MPa to 360 MPa is used as the biaxially stretched polyamide film. The molding packaging material can secure excellent moldability even when the molding packaging material is not coated with a slipperiness imparting component.

Molding packaging material and molded case

The molding packaging materialaccording to the present invention includes a heat resistant resin layeras an outer layer, a thermoplastic resin layeras an inner layer, a metal foil layerarranged between the heat resistant resin layer and the thermoplastic resin layer, and a black ink layerarranged between the metal foil layerand the heat resistant resin layer. The black ink layercontains carbon black, diamine, polyol, and hardening agent. The black ink layer does not partially crack and detach even when the molding packaging material according to the present invention is used in a somewhat harsh environment such as a hot and humid environment and/or at the time of molding or sealing.

Growing community of inventors

Isehara, Japan

Tetsunobu Kuramoto