公开(公告)号：US20170092904A1

公开(公告)日：2017-03-30

申请号：US15278563

申请日：2016-09-28

Applicant: SHOWA DENKO PACKAGING CO., LTD.

Inventor： Daisuke NAKAJIMA ,  Makoto KARATSU ,  Takashi NAGAOKA

IPC: H01M2/02 ,  H01M10/0525 ,  H01M2/08

CPC classification number: H01M2/0287 ,  B32B7/12 ,  B32B15/06 ,  B32B15/085 ,  B32B15/088 ,  B32B15/09 ,  B32B15/18 ,  B32B15/20 ,  B32B25/14 ,  B32B27/08 ,  B32B27/18 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B2250/04 ,  B32B2250/05 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/306 ,  B32B2307/518 ,  B32B2307/558 ,  B32B2307/724 ,  B32B2435/02 ,  B32B2457/10 ,  B32B2457/16 ,  H01M2/0277 ,  H01M2/0285 ,  H01M2/08 ,  H01M10/0525

Abstract: A sealant film has a structure made of a laminated body of two or more layers. The laminated body includes a first resin layer 7 containing 50 mass % or more of a random copolymer containing propylene and a copolymer component other than propylene as copolymer components, and a second resin layer 8 formed by a mixed resin containing a first elastomer-modified olefin based resin having a melting point of 155° C. or higher and a crystal melting energy of 50 J/g or more, and a second elastomer-modified olefin based resin having a melting point is 135° C. or higher and a crystal melting energy of 30 J/g or less. With this structure, when the inner pressure of a power storage device is excessively increased, breakage (separation) occurs inside the sealant layer, causing gas-releasing, which in turn can prevent bursting of the packaging material due to the inner pressure increase.

公开(公告)号：US20210194084A1

公开(公告)日：2021-06-24

申请号：US17132668

申请日：2020-12-23

Applicant: SHOWA DENKO PACKAGING CO., LTD.

Inventor： Daisuke NAKAJIMA ,  Takashi NAGAOKA

IPC: H01M50/197 ,  H01M50/198 ,  H01M50/191 ,  H01M50/193 ,  B32B15/085

Abstract: It is intended to improve formability of a battery packaging material. A sealant film 20 for a battery packaging material is a multi-layer material composed of a first non-stretched film layer 21 in which one surface thereof serves as a surface of the innermost layer of the battery packaging material 1, and one or more other non-stretched film layers 22 and 23 laminated on the other surface side of the first non-stretched film layer 21. The first non-stretched film layer 21 contains a random copolymer containing a monomer other than propylene and propylene as a copolymerization component, a homopolymer of propylene, a lubricant, and a content rate of the homopolymer to a total amount of the random copolymer and the homopolymer is 5 wt % to 30 wt %.

公开(公告)号：US20170092903A1

公开(公告)日：2017-03-30

申请号：US15278522

申请日：2016-09-28

Applicant: SHOWA DENKO PACKAGING CO., LTD

Inventor： Daisuke NAKAJIMA ,  Makoto KARATSU ,  Takashi NAGAOKA

IPC: H01M2/02 ,  H01M2/08 ,  H01M10/0525

CPC classification number: H01M2/0287 ,  H01M2/0277 ,  H01M2/0285 ,  H01M2/0295 ,  H01M2/08 ,  H01M10/0525

Abstract: A sealant film has a structure made of a laminated body of two or more layers. The laminated body includes a first resin layer 7 containing 50 mass % or more of a random copolymer containing propylene and a copolymer component other than propylene as copolymer components, and a second resin layer 8 formed by a mixed resin containing a first elastomer-modified olefin based resin having a crystallization temperature of 105° C. or higher and a crystallization energy of 50 J/g or more, and a second elastomer-modified olefin based resin having a crystallization temperature is 85° C. or higher and a crystallization energy of 30 J/g or less. With this structure, when the inner pressure of a power storage device is excessively increased, breakage (separation) occurs inside the sealant layer, causing gas-releasing, which in turn can prevent bursting of the packaging material due to the inner pressure increase.