Patents by Inventor Rikiya Yamashita

Rikiya Yamashita 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: 20160372719
    Abstract: The battery packaging material includes a laminate wherein at least a substrate layer, a metal layer, and a sealant layer are laminated in the stated order. The metal layer has an r value, from a tensile test and calculated by the following formulae, of 0.9 or more. r value=log(WA/WB)/log(tA/tB); WA=(XA0+XA45×2+XA90)/4; WB=(XB0+XB45×2+XB90)/4; XA0, XA45, XA90: respectively, the width of a tensile direction central part of a test piece sampled in the 0°, 45°, 90° in-plane directions before the tensile test XB0, XB45, XB90: respectively, the width of the tensile direction central part after the tensile test of the test piece sampled in the 0°, 45°, 90° in-plane directions; tA: the thickness of the test piece before the tensile test; tB: the thickness of the test piece after the tensile test.
    Type: Application
    Filed: March 3, 2015
    Publication date: December 22, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makoto AMANO, Rikiya YAMASHITA
  • Publication number: 20160365545
    Abstract: Provided is a battery packaging material comprising a film-like layered body obtained by sequentially layering at least a substrate layer, an adhesive layer, a metal layer and a sealant layer, the battery packaging material exhibiting excellent moldability and being unlikely to crack or form a pinhole during the molding thereof. A battery packaging material comprising a layered body obtained by sequentially layering at least a substrate layer, an adhesive layer, a metal layer and a sealant layer, wherein the substrate layer is configured in a manner such that the sum (A+B) of a value (A) equal to stress when stretching to 50% in the MD direction/stress when stretching to 5% and a value (B) equal to stress when stretching to 50% in the TD direction/stress when stretching to 5% satisfies the relationship A+B?3.5.
    Type: Application
    Filed: February 18, 2015
    Publication date: December 15, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Rikiya YAMASHITA
  • Publication number: 20160308174
    Abstract: A technique relates to a packaging material for a battery, including a laminate of film form including at least a base material layer, an adhesive layer, a metal layer, and a sealant layer, laminated in that order, the packaging material being resistant to cracks or pinholes occurring during molding, and having exceptional moldability. The packaging material for a battery is characterized by including a laminate of at least a base material layer, an adhesive layer, a metal layer, and a sealant layer, laminated in that order, the metal layer being aluminum foil having 0.2% proof stress of 55-140 N/mm2 when subjected to tensile testing in a parallel direction to the rolling direction, and the ratio of thickness of the base material layer and the metal layer (base material layer thickness:metal layer thickness) being within the range 1:1 to 1:3.
    Type: Application
    Filed: December 10, 2014
    Publication date: October 20, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Rikiya YAMASHITA
  • Publication number: 20160301040
    Abstract: To provide a technique for a battery-packaging material made of a film-form laminate in which at least a base material layer, an adhesive layer, a metal layer, and a sealant layer are laminated successively, wherein: electrolytic solution resistance is further improved by including a polyester film in the base material layer; cracks and pinholes are less likely to be created at the time of forming the polyester-film-including base material layer; and formability is improved. This battery-packaging material is made of a laminate in which at least a base material layer, an adhesive layer, a metal layer, and a sealant layer are laminated successively, wherein: the base material layer includes a polyester film; and the metal layer is an aluminum foil in which the 0.2% proof stress at the time of performing a tensile test in a direction parallel to the rolling direction is from 55 to 140 N/mm2.
    Type: Application
    Filed: December 1, 2014
    Publication date: October 13, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Atsuko TAKAHAGI, Hirohisa AKITA, Sumito NISHIDA, Rikiya YAMASHITA
  • Publication number: 20160211490
    Abstract: A packaging material for a cell including a laminated article having at least a coating layer, a barrier layer, and a sealant layer in the stated order, wherein: the coating layer has at least three layers including a first, second and third coating layer, and is disposed so that the first coating layer is positioned as the outermost layer and the third coating layer is positioned on the barrier-layer-side; and the first coating layer, the second coating layer, and the third coating layer are formed from a cured product of a resin composition containing a heat-curing resin and a curing accelerator so as to sufficiently exhibit a specific hardness, whereby the thickness can be reduced, exceptional chemical resistance, moldability, and inter-layer adhesion between the barrier layer and the coating layer can be obtained, and the lead time can be reduced to enable an improvement in production efficiency.
    Type: Application
    Filed: September 18, 2014
    Publication date: July 21, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yohei HASHIMOTO, Rikiya YAMASHITA
  • Publication number: 20160197318
    Abstract: A resin composition can impart high insulating properties, sealing properties, and moldability to a battery packaging material. A resin composition minimizes cracks when used in the sealant layer of a battery packaging material and a heat seal section of the material is bent, and can impart high insulating properties. A resin composition for use in the sealant layer of a battery packaging material contains: at least one of a propylene-ethylene random copolymer having a melting point of 156° C. or more and an ethylene content of 5 mass % or less and a propylene-ethylene block copolymer having a melting point of 158° C. or more and an ethylene content of 7 mass % or less; and a polyolefin elastomer having a melting point of 135° C. or more. A resin composition for the sealing layer of a battery packaging material contains a polyolefin resin having an isotactic fraction of 99% or less.
    Type: Application
    Filed: September 3, 2014
    Publication date: July 7, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Rikiya YAMASHITA, Hiroki DOUKE
  • Publication number: 20160172638
    Abstract: A method for producing a battery packaging material, the method including the steps of: providing a battery packaging material including a laminate in which at least a base material layer, a metal layer, and a sealant layer containing a polyolefin resin are laminated in this order; and confirming that the intensity ratio X=P/Q is in the range of 0.05 to 0.80 where P is a peak intensity P at 1650 cm?1 originating from C?O stretching vibration of the amide group of an amide-based lubricant, and Q is a peak intensity Q at 1460 cm?1 originating from bending vibration of the group —CH2— of the polyolefin resin, each of which is measured from an absorption spectrum obtained by splitting reflected light in irradiation of the surface of the sealant layer with an infrared ray, and P/Q is a ratio of the peak intensity P to the peak intensity Q.
    Type: Application
    Filed: February 27, 2015
    Publication date: June 16, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makoto AMANO, Rikiya YAMASHITA, Yoichi MOTIZUKI, Atsuko TAKAHAGI
  • Publication number: 20160145477
    Abstract: A resin composition capable of securely adhering multiple members in a short time without having to establish a long aging process. The resin composition including: (1) a urethane(meth)acrylate; (2) at least one selected from a group of (meth)acrylates having a phosphate group, (meth)acrylic silane coupling agents, and (meth)acrylates having an isocyanate group; and (3) a (meth)acrylate having an epoxy group.
    Type: Application
    Filed: June 24, 2014
    Publication date: May 26, 2016
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Masakazu KANDORI, Yohei HASHIMOTO, Hiroshi KISHIDA, Rikiya YAMASHITA
  • Patent number: 9310543
    Abstract: A method for producing a mold for a patterned alignment film for three-dimensional display includes: forming a first layer composed of a metal material or an inorganic material; forming a fine linear three-dimensional structure in a surface of the first layer in an approximately constant direction;F forming a second layer, composed of a metal material or an inorganic material, on the surface of the first layer after the first three-dimensional structure forming step; a second three-dimensional structure forming step of forming a fine linear three-dimensional structure in a surface of the second layer in an approximately constant direction which differs by 90° from that in the first three-dimensional structure forming step; a resist forming step of forming a resist in a parallel stripe pattern on the surface of the second layer after the second three-dimensional structure forming step.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: April 12, 2016
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Kei Katou, Yosuke Kosaka, Rikiya Yamashita, Mitsumasa Koiwa
  • Publication number: 20160049621
    Abstract: The purpose of the present invention is to provide a film-like battery packaging material in which a coating layer, which can be cured in a short time and exhibits superior chemical resistance, is provided to a substrate layer surface. In the battery packaging material, which comprises a laminate body that includes at least a coating layer, a substrate layer, an adhesive layer, a barrier layer, and a sealant layer, in that order, the use of a resin composition containing a heat-curable resin and a curing accelerator as the coating layer enables the formation of a coating layer that can be cured in a short time and contributes to electrolyte liquid, etc., resistance.
    Type: Application
    Filed: March 19, 2014
    Publication date: February 18, 2016
    Inventors: Yohei HASHIMOTO, Rikiya YAMASHITA, Yaichiro HORI
  • Publication number: 20160049622
    Abstract: A packaging material for batteries, which is formed of a laminate that sequentially includes a base layer, an adhesive layer, a barrier layer and a sealant layer in this order. By having the adhesive layer formed of a cured product of a resin composition that contains a thermosetting resin and (A) a curing accelerator and an elastomer resin or (B) reactive resin beads, the adhesive layer arranged between the base layer and the barrier layer can be cured in a short time, thereby reducing the lead time. In addition, by providing the adhesive layer between the base layer and the barrier layer, the adhesion strength between the base layer and the barrier layer is increased and excellent formability can be achieved.
    Type: Application
    Filed: March 19, 2014
    Publication date: February 18, 2016
    Inventors: Yohei HASHIMOTO, Rikiya YAMASHITA
  • Publication number: 20150380692
    Abstract: 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 ?m into the insulating layer from a cross-section of the layered body in the layering direction thereof.
    Type: Application
    Filed: February 17, 2014
    Publication date: December 31, 2015
    Inventors: Tetsuya OJIRI, Tsuyoshi SUZUKI, Kazuhiko YOKOTA, Rikiya YAMASHITA, Masakazu KANDORI
  • Publication number: 20150372263
    Abstract: 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.
    Type: Application
    Filed: February 5, 2014
    Publication date: December 24, 2015
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hiroki DOUKE, Yoshihiro SHINOHARA, Tsuyoshi SUZUKI, Rikiya YAMASHITA, Kazuhiko YOKOTA, Masakazu KANDORI, Yaichiro HORI, Tetsuya OJIRI
  • Publication number: 20150255761
    Abstract: In a packaging material for a battery constituted by a laminate body having at least a base material layer, a bonding layer, a metal layer and a sealant layer in this order, the bonding layer satisfies at least two of the following properties (1) to (3). (1) The hardness is 20 to 115 MPa when an indenter is pressed into the bonding layer by 5 ?m from the cross-section of the laminate body using a nano-indenter. (2) The peak temperature is 10 to 60° C. for the loss modulus peak that is acquired when a dynamic viscoelasticity is measured at a frequency of 1 Hz for the bonding layer. (3) IH/IM is 0.15 to 1.5, where an integral value of peak areas existing in 2800 to 3000 cm?1 is defined as IM, and an integral value of peak areas existing in 3100 to 3500 cm?1 is defined as IH.
    Type: Application
    Filed: September 10, 2013
    Publication date: September 10, 2015
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Yohei Hashimoto, Rikiya Yamashita, Kazuhiko Yokota, Tetsuya Ojiri
  • Publication number: 20140255765
    Abstract: Provided is a packaging material for an electrochemical cell which prevents the occurrence of short circuits. A packaging material for an electrochemical cell configured by laminating a base material layer including: at least a resin film; a heat-adhesive layer including a heat-adhesive resin, the heat-adhesive layer being disposed on the innermost layer; and a barrier layer including a metal foil, the barrier layer being disposed between the base material layer and the heat-adhesive layer, wherein a chemical-conversion-treated layer including alumina particles and modified epoxy resin is formed on the surface of at least the heat adhesive layer side of the barrier layer.
    Type: Application
    Filed: October 22, 2012
    Publication date: September 11, 2014
    Inventors: Hirohisa Akita, Makoto Amano, Kazuhiko Yokota, Rikiya Yamashita
  • Publication number: 20140085597
    Abstract: A method for producing a mold for a patterned alignment film for three-dimensional display includes: forming a first layer composed of a metal material or an inorganic material; forming a fine linear three-dimensional structure in a surface of the first layer in an approximately constant direction; forming a second layer, composed of a metal material or an inorganic material, on the surface of the first layer after the first three-dimensional structure forming step; a second three-dimensional structure forming step of forming a fine linear three-dimensional structure in a surface of the second layer in an approximately constant direction which differs by 90° from that in the first three-dimensional structure forming step; a resist forming step of forming a resist in a parallel stripe pattern on the surface of the second layer after the second three-dimensional structure forming step.
    Type: Application
    Filed: May 17, 2012
    Publication date: March 27, 2014
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kei Katou, Yosuke Kosaka, Rikiya Yamashita, Mitsumasa Koiwa
  • Publication number: 20120258353
    Abstract: A polymer battery module packaging sheet includes, as essential components, a base layer (61), an aluminum layer (62), chemical conversion coatings (64a, 64b) coating the opposite surfaces of the aluminum layer (62), and an innermost layer (63). The chemical conversion coatings (64a, 64b) are formed by processing the opposite surfaces of the aluminum layer (62) by a phosphate treatment method. The base layer (61) and the innermost layer (63) are bonded to the chemical conversion coatings (64a, 64b) of the aluminum layer (62) with adhesive layers (65a, 65b), respectively.
    Type: Application
    Filed: June 13, 2012
    Publication date: October 11, 2012
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Takanori YAMASHITA, Masataka OKUSHITA, Kazuki YAMADA, Rikiya YAMASHITA, Hiroshi MIYAMA, Youichi MOCHIZUKI
  • Publication number: 20120034477
    Abstract: A polymer battery module packaging sheet includes, as essential components, a base layer (61), an aluminum layer (62), chemical conversion coatings (64a, 64b) coating the opposite surfaces of the aluminum layer (62), and an innermost layer (63). The chemical conversion coatings (64a, 64b) are formed by processing the opposite surfaces of the aluminum layer (62) by a phosphate treatment method. The base layer (61) and the innermost layer (63) are bonded to the chemical conversion coatings (64a, 64b) of the aluminum layer (62) with adhesive layers (65a, 65b), respectively.
    Type: Application
    Filed: October 18, 2011
    Publication date: February 9, 2012
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Takanori YAMASHITA, Masataka Okushita, Kazuki Yamada, Rikiya Yamashita, Hiroshi Miyama, Youichi Mochizuki
  • Patent number: 8067113
    Abstract: A polymer battery module packaging sheet includes, as essential components, a base layer (61), an aluminum layer (62), chemical conversion coatings (64a, 64b) coating the opposite surfaces of the aluminum layer (62), and an innermost layer (63). The chemical conversion coatings (64a, 64b) are formed by processing the opposite surfaces of the aluminum layer (62) by a phosphate treatment method. The base layer (61) and the innermost layer (63) are bonded to the chemical conversion coatings (64a, 64b) of the aluminum layer (62) with adhesive layers (65a, 65b), respectively.
    Type: Grant
    Filed: March 20, 2006
    Date of Patent: November 29, 2011
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Takanori Yamashita, Masataka Okushita, Kazuki Yamada, Rikiya Yamashita, Hiroshi Miyama, Youichi Mochizuki
  • Patent number: 7285334
    Abstract: A lithium battery comprises a pouch (4) and a lithium battery module (2) packaged in the pouch (4). The pouch (4) is formed from a battery packaging laminated structure (10). The laminated structure (10) has an outermost layer (11), a barrier layer (12) and an innermost layer (14), or an outermost layer (11), a barrier layer (12), an intermediate layer (13) and an innermost layer (14) superposed in that order. The outermost layer (11) is formed of a formable base material, the barrier layer (12) is formed of a impermeable base material having a barrier property, the intermediate layer (13) is formed of a formable base material and the innermost layer (14) is formed of a heat-adhesive base material.
    Type: Grant
    Filed: April 10, 2000
    Date of Patent: October 23, 2007
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Rikiya Yamashita, Kazuki Yamada, Yuichi Hirai, Youichi Mochiduki, Takanori Yamashita, Hitoshi Sekino, Jun Fukuda, Kouichi Mikami, Hiroki Nakagawa, Miho Miyahara, Chie Kawai, Hideki Arao, Takakazu Goto