Patents by Inventor Makoto Karatsu

Makoto Karatsu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230420773
    Abstract: Provided is a battery packaging material in which the seal strength gradually decreases as the temperature rises, resulting in a gradual unsealing. The battery packaging material is composed of a substrate layer 13 served as an outer layer, a sealant layer 20A served as an inner layer, and a barrier layer 11 arranged between these two layers. The sealant layer 20A is composed of one or more layers. A first sealant layer 21 served as the innermost layer is made of a resin blend containing a polyolefin resin A having a melting point of 120° C. or above and a polyolefin resin B having a melting point of less than 120° C.
    Type: Application
    Filed: June 22, 2023
    Publication date: December 28, 2023
    Applicant: Resonac Packaging Corporation
    Inventors: Yuuji MINAMIBORI, Makoto KARATSU
  • Publication number: 20230382084
    Abstract: A molding packaging material is capable of ensuring good slipperiness to secure good formability when molding the molding packaging material and is less likely to cause white powder on a surface of the packaging material. The molding packaging material includes a substrate layer as an outer layer, a heat fusible resin layer as an inner layer, and a metal foil layer arranged between the two layers. The heat fusible resin layer is composed of a single layer or a multi-layer. The innermost layer of the heat fusible resin layer is made of a resin composition containing a heat fusible resin, an anti-blocking agent, a slip agent, and a fluoropolymer-based lubricant.
    Type: Application
    Filed: August 8, 2023
    Publication date: November 30, 2023
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Kenji YOSHINO, Makoto KARATSU, Takashi NAGAOKA
  • Patent number: 11766848
    Abstract: Provided is a molding packaging material which is capable of ensuring good slipperiness to secure good formability when molding the molding packaging material and is less likely to cause white powder on a surface of the packaging material. The molding packaging material includes a substrate layer 2 as an outer layer, a heat fusible resin layer 3 as an inner layer, and a metal foil layer 4 arranged between the two layers. The heat fusible resin layer 3 is composed of a single layer or a multi-layer. The innermost layer of the heat fusible resin layer 3 is made of a resin composition containing a heat fusible resin, an anti-blocking agent, a slip agent, and a fluoropolymer-based lubricant.
    Type: Grant
    Filed: August 17, 2018
    Date of Patent: September 26, 2023
    Assignee: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Kenji Yoshino, Makoto Karatsu, Takashi Nagaoka
  • Patent number: 11731398
    Abstract: Provided is a packaging material for a power storage device capable of securing excellent formability without causing pinholes and/or cracks even when deep depth forming is performed and also capable of sufficiently preventing delamination even when deep depth forming is performed or even when it is used under severe environments, such as, e.g., high temperature and high humidity. [Solving means] The packaging material for a power storage device has a configuration including a heat resistant resin layer 2 serving as an outer layer, a heat fusible resin layer 3 serving as an inner layer, and a metal foil layer 4 disposed between both the two layers. The heat resistant resin layer 2 is composed of a heat resistant resin film with a hot water shrinkage percentage of 1.5% to 12%. The heat resistant resin layer 2 and the metal foil layer 4 are bonded via an outer adhesive layer 5 composed of a cured film of an electron beam curable resin composition.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: August 22, 2023
    Assignee: Showa Denko Packaing Co., Ltd.
    Inventors: Wei He, Terutoshi Kumaki, Makoto Karatsu, Takashi Nagaoka
  • Publication number: 20210362473
    Abstract: Provided is a molding packaging material which is capable of ensuring good slipperiness to secure good formability when molding the molding packaging material and is less likely to cause white powder on a surface of the packaging material. The molding packaging material includes a substrate layer 2 as an outer layer, a heat fusible resin layer 3 as an inner layer, and a metal foil layer 4 arranged between the two layers. The heat fusible resin layer 3 is composed of a single layer or a multi-layer. The innermost layer of the heat fusible resin layer 3 is made of a resin composition containing a heat fusible resin, an anti-blocking agent, a slip agent, and a fluoropolymer-based lubricant.
    Type: Application
    Filed: August 17, 2018
    Publication date: November 25, 2021
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Kenji YOSHINO, Makoto KARATSU, Takashi NAGAOKA
  • Patent number: 10847763
    Abstract: A packaging material for a power storage device includes a heat resistant resin layer 2 as an outer layer, a sealant layer 3 as an inner layer, and a metal foil layer 4 arranged between these layers. The sealant layer 3 is composed of one layer or a plurality of layers. The innermost layer 7 of the sealant layer contains a random copolymer containing propylene as a copolymerization component and another copolymerization component other than propylene, a roughening material, and a lubricant. The roughening material is composed of particles containing a thermoplastic resin. The center line average roughness Ra of the surface 7a of the innermost layer 7 is 0.05 ?m to 1 ?m. It can provide a packaging material for a power storage device which is excellent in formability and hard to generate white powder on the surface.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: November 24, 2020
    Assignee: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Kenji Yoshino, Makoto Karatsu
  • Patent number: 10608211
    Abstract: An outer casing material for a battery 4 is provided, wherein an outer layer 11, a metal foil layer 10 and an inner layer 8 are laminated via an adhesive layer 5; the inner layer 8 comprises a sealant layer 8b and a base material layer 8a; the sealant layer 8b is made from a propylene-ethylene random copolymer wherein a melt flow rate at 230° C. thereof is in a range of 3 to 30 g/10 minutes; the base material layer 8a is made of a resin composition wherein a melt flow rate at 230° 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 ?-olefin having 4 to 12 carbons and includes 50 to 85% by mass of a polymerization unit originated from propylene.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: March 31, 2020
    Assignee: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Makoto Karatsu, Kensuke Nagata, Tetsunobu Kuramoto
  • Publication number: 20190344541
    Abstract: A packaging material shortens the lead time, improves productivity, and also secures excellent formability. The packaging material includes a base layer as an outer layer, a heat fusible resin layer as an inner layer, and a metal foil layer arranged between both the layers. The base layer and the metal foil layer are bonded via an outer adhesive layer composed of a cured film of a first electron beam curable resin composition containing an electron beam polymerization initiator. The heat fusible resin layer and the metal foil layer are bonded via an inner adhesive layer composed of a cured film of a second electron beam curable resin composition containing an electron beam polymerization initiator. The content rate of the electron beam polymerization initiator in each of the first electron beam curable resin composition and the second electron beam curable resin composition is 0.1 mass % to 10 mass %.
    Type: Application
    Filed: July 3, 2017
    Publication date: November 14, 2019
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Wei HE, Terutoshi KUMAKI, Takashi NAGAOKA, Makoto KARATSU
  • Publication number: 20190322076
    Abstract: Provided is a packaging material for a power storage device capable of securing excellent formability without causing pinholes and/or cracks even when deep depth forming is performed and also capable of sufficiently preventing delamination even when deep depth forming is performed or even when it is used under severe environments, such as, e.g., high temperature and high humidity. [Solving means] The packaging material for a power storage device has a configuration including a heat resistant resin layer 2 serving as an outer layer, a heat fusible resin layer 3 serving as an inner layer, and a metal foil layer 4 disposed between both the two layers. The heat resistant resin layer 2 is composed of a heat resistant resin film with a hot water shrinkage percentage of 1.5% to 12%. The heat resistant resin layer 2 and the metal foil layer 4 are bonded via an outer adhesive layer 5 composed of a cured film of an electron beam curable resin composition.
    Type: Application
    Filed: April 28, 2017
    Publication date: October 24, 2019
    Applicant: Showa Denko Packaing Co., Ltd.
    Inventors: Wei HE, Terutoshi KUMAKI, Makoto KARATSU, Takashi NAGAOKA
  • Patent number: 10217974
    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.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: February 26, 2019
    Assignee: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Daisuke Nakajima, Makoto Karatsu, Takashi Nagaoka
  • Patent number: 10109827
    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.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: October 23, 2018
    Assignee: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Daisuke Nakajima, Makoto Karatsu, Takashi Nagaoka
  • Publication number: 20180123093
    Abstract: A packaging material for a power storage device includes a heat resistant resin layer 2 as an outer layer, a sealant layer 3 as an inner layer, and a metal foil layer 4 arranged between these layers. The sealant layer 3 is composed of one layer or a plurality of layers. The innermost layer 7 of the sealant layer contains a random copolymer containing propylene as a copolymerization component and another copolymerization component other than propylene, a roughening material, and a lubricant. The roughening material is composed of particles containing a thermoplastic resin. The center line average roughness Ra of the surface 7a of the innermost layer 7 is 0.05 ?m to 1 ?m. It can provide a packaging material for a power storage device which is excellent in formability and hard to generate white powder on the surface.
    Type: Application
    Filed: October 31, 2017
    Publication date: May 3, 2018
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Kenji YOSHINO, Makoto KARATSU
  • Publication number: 20170104189
    Abstract: The packaging material includes a heat-resistant resin layer 2 as an outer side layer, a heat-fusible resin layer 3 as an inner side layer, and a metal foil layer 4 arranged between these layers. The heat-resistant resin layer 2 is made of a heat-resistant resin film having a hot water shrinkage rate of 1.5% to 12% and the heat-resistant resin layer 2 and the metal foil layer 4 are adhered via an outer side adhesive layer 5. The adhesive layer 5 is formed by an urethane adhesive agent containing a polyol, a polyfunctional isocyanate compound, and an aliphatic compound containing a plurality of functional groups capable of reacting with an isocyanate group in one molecule. With this, a packaging material can be provided in which excellent formability can be secured and delamination can be sufficiently suppressed without causing pinholes, etc., even when deep depth drawing is performed.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 13, 2017
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Wei HE, Hiroaki ITO, Takashi NAGAOKA, Makoto KARATSU
  • Publication number: 20170092904
    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.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 30, 2017
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Daisuke NAKAJIMA, Makoto KARATSU, Takashi NAGAOKA
  • Publication number: 20170092903
    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.
    Type: Application
    Filed: September 28, 2016
    Publication date: March 30, 2017
    Applicant: SHOWA DENKO PACKAGING CO., LTD
    Inventors: Daisuke NAKAJIMA, Makoto KARATSU, Takashi NAGAOKA
  • Publication number: 20140170509
    Abstract: An armouring material for use in an air secondary battery, including: an armouring sheet (2) constituted by laminating an outer layer (21) including heat-resistant resin film, a metal foil layer (22), and an inner layer (23) including a thermoplastic resin film, being equipped with an opening part (12) for taking oxygen in, perforating through the outer layer, the metal foil layer and the inner layer, and an oxygen-permeable membrane (3) being joined to the inner layer side in an opening part periphery (12a) and covering the opening part. The oxygen-permeable membrane is constituted from a porous fluororesin, a joining surface of outer periphery (3a) of the oxygen-permeable membrane is equipped with a primer layer (3c), and an adhesive layer (5) is provided at least in a space between the primer layer and the inner layer of the armouring sheet, to adhere the oxygen-permeable membrane to the armouring sheet.
    Type: Application
    Filed: December 12, 2013
    Publication date: June 19, 2014
    Applicant: SHOWA DENKO PACKAGING CO., LTD.
    Inventors: Kensuke NAGATA, Makoto KARATSU
  • Patent number: 4790676
    Abstract: Disclosed is a film for a printer ribbon, which is made of a resin composition comprising, 55 to 95% by weight of high-density polyethylene and 5 to 45% by weight of low-density polyethylene and having a melt tension of at least 1.4 g and a density of 0.94 to 0.96 g/cm.sup.3. The film is made by the T-die-chill roll method wherein a good stability at both ends of the extruded molten resin film is maintained to prevent the occurrence of an uneven thickness or formation of wrinkles, and wherein undesirable engulfment of air between the molten resin film and the chill roll is avoided.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: December 13, 1988
    Assignee: Showa Denko Kabushiki Kaisha
    Inventors: Makoto Karatsu, Sumio Goto