Patents Assigned to UACJ FOIL CORPORATION
  • Patent number: 10576772
    Abstract: A gravure printing roll that enables printing of fine dots with a size close to that of cells and enables printing on a print subject, such as a printing substrate, without changing the appearance of the print subject. The gravure printing roll includes: a gravure printing roll body; and cells formed in a peripheral surface of the gravure printing roll body. Each of the cells has an opening with a ratio between a dimension in a circumferential direction of the gravure printing roll body and a dimension in an axial center direction of the gravure printing roll body (dimension in the circumferential direction/dimension in the axial center direction) being 1.15 to 7, and have an opening area of 3900 ?m2 or smaller.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: March 3, 2020
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION, THINK LABORATORY CO., LTD.
    Inventors: Hiroshi Nishio, Yukie Kitada, Tatsuo Shigeta
  • Patent number: 10367204
    Abstract: It is an object to provide an aluminum alloy foil for an electrode current collector, the foil having a high post-drying strength after application of an active material while keeping a high electrical conductivity. Disclosed is an aluminum alloy foil for an electrode current collector, comprising 0.03 to 0.1 mass % (hereinafter, “mass %” is simply referred to as “%”) of Fe, 0.01 to 0.1% of Si, and 0.0001 to 0.01% of Cu, with the rest consisting of Al and unavoidable impurities, wherein the aluminum alloy foil after final cold rolling has a tensile strength of 180 MPa or higher, a 0.2% yield strength of 160 MPa or higher, and an electrical conductivity of 60% IACS or higher; and the aluminum alloy foil has a tensile strength of 170 MPa or higher and a 0.2% yield strength of 150 MPa or higher even after the aluminum alloy foil is subjected to heat treatment at any of 120° C. for 24 hours, 140° C. for 3 hours, and 160° C. for 15 minutes.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: July 30, 2019
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Masakazu Seki, Satoshi Suzuki, Tomohiko Furutani, Kenji Yamamoto, Koichi Ashizawa
  • Patent number: 10050257
    Abstract: An aluminum alloy foil for an electrode current collectors has a high post-drying strength after application of an active material while keeping a high electrical conductivity. The aluminum alloy foil includes 0.1 to 1.0 mass % of Fe, 0.01 to 0.5% of Si, and 0.01 to 0.2 mass % of Cu, and the rest includes Al and unavoidable impurities. The aluminum alloy foil after final cold rolling has a tensile strength of 220 MPa or higher, a 0.2% yield strength of 180 MPa or higher, and an electrical conductivity of 58% IACS or higher. The aluminum alloy foil has a tensile strength of 190 MPa or higher and a 0.2% yield strength of 160 MPa or higher after the aluminum alloy foil is heat treated at any of 120° C. for 24 hours, 140° C. for 3 hours, and 160° C. for 15 minutes.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: August 14, 2018
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Masakazu Seki, Satoshi Suzuki, Tomohiko Furutani, Kenji Yamamoto, Koichi Ashizawa
  • Patent number: 9947917
    Abstract: An aluminum alloy foil for a current collector of an electrode is provided which has not only high electric conductivity but also high strength before and after a drying step, and is low in manufacturing cost. Provided is an aluminum alloy foil for a current collector of an electrode, containing 1.0 to 2.0 mass % (hereafter, simply referred to as “%”) of Fe, 0.01 to 0.2% of Si, 0.0001 to 0.2% of Cu, and 0.005 to 0.3% of Ti, the remainder being Al and inevitable impurities, wherein an amount of Fe contained as a solid solution is 300 ppm or more, and particles of intermetallic compounds having an equivalent circle diameter of 0.1 to 1.0 ?m exist at 1.0×105 particles/mm2 or more.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: April 17, 2018
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Masakazu Seki, Satoshi Suzuki, Tomohiko Furutani
  • Patent number: 9911546
    Abstract: A current collector which is suitable for discharging and charging at a large current density is provided. The present invention provides a current collector including a conductive substrate and a conductive resin layer provided on one side or both sides of the conductive substrate. The conductive resin layer contains a soluble nitrocellulose-based resin and a conductive material.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 6, 2018
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Kenichi Kadowaki, Tsugio Kataoka
  • Patent number: 9847530
    Abstract: An object of the present invention is to provide an aluminum alloy foil for an electrode current collector, the foil having a high strength and high strength after a drying process. The aluminum alloy foil can be manufactured at low cost. Disclosed is an aluminum alloy foil for electrode current collector, including 0.03 to 1.0% of Fe, 0.01 to 0.2% of Si, 0.0001 to 0.2% of Cu, 0.005 to 0.03% of Ti, with the rest being Al and unavoidable impurities. The aluminum alloy foil has Fe solid solution content of 200 ppm or higher, and an intermetallic compound having a maximum diameter length of 0.1 to 1.0 ?m in an number density of 2.0×104 particles/mm2 or more.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: December 19, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Masakazu Seki, Satoshi Suzuki, Kenji Yamamoto, Tomohiko Furutani
  • Patent number: 9825300
    Abstract: The present invention provides an aluminum alloy foil, capable of going under thin rolling during its manufacture. The aluminum alloy foil shall also avoid cuts during the active material paste coating process and wrinkles during the press working process, and have suitable strength for the series of manufacturing processes from the manufacture of the aluminum alloy foil to the manufacture of the electrode material. Further, the present invention provides an aluminum alloy foil for electrode current collector, including 0.50 to 1.50 mass % (hereinafter mass % is referred to as %) of Mn, 0.05 to 0.50% of Cu, 0.20 to 1.00% of Fe, 0.01 to 0.60% of Si, with the rest consisting of Al and unavoidable impurities, a manufacturing method thereof, and an electrode material. Here, regarding the aluminum alloy foil, a solid solution amount of Mn is 1500 ppm or more, a solid solution amount of Cu is 40 ppm or more, and a tensile strength after a final cold rolling (T1) is 260 MPa or higher and 350 MPa or lower.
    Type: Grant
    Filed: May 16, 2013
    Date of Patent: November 21, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Tomohiko Furutani, Kenji Yamamoto, Satoshi Suzuki, Masakazu Seki
  • Patent number: 9786919
    Abstract: Current collector, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device having superior shut down function are provided. According to the present invention, a current collector having a resin layer on at least one side of a conductive substrate is provided. Here, thermoplastic resin particles substantially free of a conductive agent are dispersed in a thermosetting resin base material containing the conductive agent to structure the resin layer; a value of mass ratio given by (thermoplastic resin particles)/(conductive agent) is 0.3 to 1.5; and a value given by (average thickness of conductive agent)/(average thickness of thermoplastic resin particles) is 0.3 to 4.0.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: October 10, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Tsugio Kataoka, Satoshi Yamabe
  • Patent number: 9741498
    Abstract: Provided are a current collector which has an excellent high-rate property and exerts a sufficient safety function when employed in a secondary battery or a capacitor, as well as an electrode, a secondary battery or a capacitor in which said current collector is employed. According to the invention, a current collector is provided which comprises: metal foil; and a conductive layer with a film thickness of 0.1 ?m to 10 ?m formed on a surface of said metal foil. Here, said conductive layer includes a conductive material and a binder material. A melting point of said binder material is 80° C. to 150° C. Further, said binder material shows, in differential scanning calorimetry (DSC) in a range from room temperature to 200° C., one or more endothermic peaks in the heating-up process. In a case where said binder material shows two or more endothermic peaks, each difference between said peaks is 15° C. or more. Moreover, said binder material shows one or more exothermic peaks in the cooling-down process.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: August 22, 2017
    Assignees: Furukawa Electric Co., Ltd., UACJ FOIL Corporation, UACJ Corporation
    Inventors: Takahiro Iida, Yasumasa Morishima, Takayori Ito, Hidekazu Hara, Tsugio Kataoka, Mitsuya Inoue, Satoshi Yamabe, Osamu Kato, Yukiou Honkawa, Sohei Saito, Tatsuhiro Yaegashi
  • Patent number: 9715971
    Abstract: An object of the present invention is to provide an aluminum alloy foil for electrode current collectors having superior rolling properties, high conductivity, and high strength after the drying step following the application of the active material. According to the present invention, an aluminum alloy foil for electrode current collector, including 0.03 to 0.1% of Fe, 0.005 to 0.02% of Ti, 0 to 0.1% of Si, 0 to 0.01% of Cu, 99.85% or more of Al, with the rest being unavoidable impurities, wherein tensile strength of the aluminum alloy foil is 175 MPa or higher, and electrical conductivity of the aluminum alloy foil is 60% IACS or higher, is provided.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 25, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Satoshi Suzuki, Masakazu Seki, Tomohiko Furutani, Kenji Yamamoto
  • Patent number: 9698426
    Abstract: The present invention provides an aluminum alloy foil for electrode current collector, high in strength and superior in heat resistance after the active material coating/drying process of the manufacture of the battery, a manufacturing method thereof, and a lithium ion secondary battery. According to the present invention, an aluminum alloy foil for electrode current collector, including 0.1 to 0.5 mass % (hereinafter mass % is referred to as %) of Fe, 0.01 to 0.5% of Si, 0.01 to 0.2% of Cu, 0.01 to 0.5% of Mn, with the rest being Al and unavoidable impurities, wherein tensile strength of an aluminum alloy foil and a heat treatment selected from 24 hours at 100° C., 3 hours at 150° C., and 15 minutes at 200° C., is 210 MPa or higher, a manufacturing method thereof, and a lithium ion secondary battery are provided.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: July 4, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Tomohiko Furutani, Kenji Yamamoto, Satoshi Suzuki, Masakazu Seki
  • Patent number: 9666867
    Abstract: An object of the present invention is to provide an aluminum alloy foil for an electrode current collector, the foil having a high strength after the drying step while keeping a high electrical conductivity. Disclosed is a method for manufacturing an aluminum alloy foil for electrode current collector, including: maintaining an aluminum alloy ingot comprising 0.03 to 0.1% of Fe, 0.01 to 0.1% of Si, 0.0001 to 0.01% of Cu, 0.005% or less of Mn, with the rest being Al and unavoidable impurities, at 550 to 620° C. for 1 to 20 hours, and subjecting the resulting ingot under a hot rolling with a starting temperature of 500° C. or higher and an end-point temperature of 255 to 300° C.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: May 30, 2017
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Masakazu Seki, Satoshi Suzuki, Kenji Yamamoto, Tomohiko Furutani
  • Patent number: 9659716
    Abstract: Provided is a technique to confirm the performance of the conductive resin layer of a current collector without actually preparing an electrode structure, a non-aqueous electrolyte battery, an electrical double layer capacitor, a lithium ion capacitor, or an electrical storage device, and to confirm the performance of the conductive resin layer easily with high accuracy by a non-destructive test. A current collector includes a conductive substrate and a resin layer possessing conductivity, the resin layer being formed on at least one side of the conductive substrate. The resin layer possessing conductivity contains a resin and a conductive material containing carbon as a main component. When the color tone of the surface of the resin layer possessing conductivity is specified with L*a*b* color system, L* is 60 or lower, a* is ?1.0 to 1.0, and b* is ?1.0 to 3.0.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 23, 2017
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Kenichi Kadowaki, Satoshi Yamabe
  • Publication number: 20170040617
    Abstract: It is an object to provide an aluminum alloy foil for an electrode current collector, the foil having a high post-drying strength after application of an active material while keeping a high electrical conductivity. Disclosed is an aluminum alloy foil for an electrode current collector, comprising 0.03 to 0.1 mass % (hereinafter, “mass %” is simply referred to as “%”) of Fe, 0.01 to 0.1% of Si, and 0.0001 to 0.01% of Cu, with the rest consisting of Al and unavoidable impurities, wherein the aluminum alloy foil after final cold rolling has a tensile strength of 180 MPa or higher, a 0.2% yield strength of 160 MPa or higher, and an electrical conductivity of 60% IACS or higher; and the aluminum alloy foil has a tensile strength of 170 MPa or higher and a 0.2% yield strength of 150 MPa or higher even after the aluminum alloy foil is subjected to heat treatment at any of 120° C. for 24 hours, 140° C. for 3 hours, and 160° C. for 15 minutes.
    Type: Application
    Filed: October 21, 2016
    Publication date: February 9, 2017
    Applicants: UACJ Corporation, UACJ Foil Corporation
    Inventors: Masakazu Seki, Satoshi Suzuki, Tomohiko Furutani, Kenji Yamamoto, Koichi Ashizawa
  • Patent number: 9543588
    Abstract: An object of the present invention is to provide an aluminum alloy foil for an electrode current collector, the foil having a high strength after the drying step while keeping a high electrical conductivity. Disclosed is a method for manufacturing an aluminum alloy foil for electrode current collector, including: maintaining an aluminum alloy ingot comprising 0.1 to 0.5% of Fe, 0.01 to 0.3% of Si, 0.01 to 0.2% of Cu, 0.01% or less of Mn, with the rest being Al and unavoidable impurities, at 550 to 620° C. for 1 to 20 hours, and subjecting the resulting ingot under a hot rolling with a starting temperature of 500° C. or higher and an end-point temperature of 255 to 300° C.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: January 10, 2017
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Masakazu Seki, Satoshi Suzuki, Kenji Yamamoto, Tomohiko Furutani
  • Patent number: 9508994
    Abstract: A current collector, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device capable of providing superior shut down function are provided. According to the present invention, a current collector having a resin layer on at least one side of a conductive substrate, wherein: the resin layer has a thermoplastic resin dispersed in a thermosetting resin base material, the thermoplastic resin encapsuling a conductive agent; a value given by (average thickness of the conductive agent)/(average thickness of the thermoplastic resin) is 0.5 to 3; the conductive agent is formulated so that a value of volume % given by (conductive agent)/(conductive agent+thermoplastic resin) is 10 to 50%; and formulation ratio of the thermoplastic resin is 10 to 65%, is provided.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: November 29, 2016
    Assignees: UACJ CORPORATION, UACJ FOIL CORPORATION
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Tsugio Kataoka, Satoshi Yamabe
  • Publication number: 20160322641
    Abstract: A current collector having high safety, the current collector being capable of stably maintaining the PTC function even when the temperature further increases after realizing the PTC function when used for the electrode structure of electrical storage devices such as non-aqueous electrolyte batteries, electrical double layer capacitors, and lithium ion capacitors; electrode structures; electrical storage devices; and composition for current collectors, is provided. A current collector 100 including a conductive substrate 103 and a resin layer 105 provided onto at least one side of the conductive substrate 103, is provided. Here, the resin layer 105 is obtained by coating a paste onto the conductive substrate 103, followed by cross-linking. The paste includes polyolefin-based emulsion particles 125, a conductive material 121, and a cross-linker 131.
    Type: Application
    Filed: November 15, 2013
    Publication date: November 3, 2016
    Applicants: UACJ CORPORATION, UACJ FOIL CORPORATION, FURUKAWA ELECTRIC CO., LTD.
    Inventors: Sohei Saito, Osamu Kato, Yukiou Honkawa, Tatsuhiro Yaegashi, Tsugio Kataoka, Mitsuya Inoue, Satoshi Yamabe, Yasumasa Morishima, Takayori Ito, Hidekazu Hara, Takahiro Iida
  • Publication number: 20160276653
    Abstract: An aluminum alloy foil for a current collector of an electrode is provided which has not only high electric conductivity but also high strength before and after a drying step, and is low in manufacturing cost. Provided is an aluminum alloy foil for a current collector of an electrode, containing 1.0 to 2.0 mass % (hereafter, simply referred to as “%”) of Fe, 0.01 to 0.2% of Si, 0.0001 to 0.2% of Cu, and 0.005 to 0.3% of Ti, the remainder being Al and inevitable impurities, wherein an amount of Fe contained as a solid solution is 300 ppm or more, and particles of intermetallic compounds having an equivalent circle diameter of 0.1 to 1.0 ?m exist at 1.0×105 particles/mm2 or more.
    Type: Application
    Filed: October 21, 2014
    Publication date: September 22, 2016
    Applicants: UACJ Corporation, UACJ Foil Corporation
    Inventors: Masakazu Seki, Satoshi Suzuki, Tomohiko Furutani
  • Publication number: 20160276673
    Abstract: A manufacturing method for a current collector includes dispersing and agitating a fluorine-based resin and conductive particles for 5 to 60 minutes at 1000 to 5000 rpm, dispersing and agitating the fluorine-based resin and conductive particles for 10 to 120 minutes at 2000 to 7000 rpm. The resin layer includes a fluorine-based resin and conductive particles, has a thickness of 0.3 to 20 ?m. The current collector has one or more of: (1) average diameter of the particles is 0.5 to 25 ?m, and a surface occupying ratio of the particles at a surface is 10 to 50%; (2) surface resistance of the resin layer at 20° C. is 1.0 to 10?, resistance after heating at 220° C. is 200 to 600?, and (3) surface resistance of the resin layer at 20° C. is 1.8 to 9.7?, resistance after heating at 180° C. is 209 to 532?.
    Type: Application
    Filed: June 1, 2016
    Publication date: September 22, 2016
    Applicants: UACJ Corporation, UACJ Foil Corporation
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Tsugio Kataoka, Satoshi Yamabe
  • Patent number: 9336959
    Abstract: An object of the present invention is to provide a current collector which can decrease the internal resistance of a non-aqueous electrolyte battery, be used suitably for a non-aqueous electrolyte battery such as a lithium ion secondary battery and the like or for an electrical storage device such as a lithium ion capacitor and the like, and improve high rate characteristics. According to the present invention, a current collector which is structured by forming a resin layer possessing conductivity on at least one side of a conductive substrate is provided. The resin layer contains a chitosan-based resin and a conductive material, and the water contact angle of the surface of the resin layer measured by ?/2 method in a thermostatic chamber at 23° C. is 5 degrees or more and 60 degrees or less. In addition, an electrode structure, a non-aqueous electrolyte battery, and an electrical storage device which use the current collector are provided.
    Type: Grant
    Filed: July 27, 2012
    Date of Patent: May 10, 2016
    Assignees: UACJ Corporation, UACJ Foil Corporation
    Inventors: Osamu Kato, Sohei Saito, Yukiou Honkawa, Mitsuyuki Wasamoto, Kenichi Kadowaki, Satoshi Yamabe