Patents by Inventor Naoyuki Maruichi

Naoyuki Maruichi 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).

  • Patent number: 10773502
    Abstract: The present invention provides a heat shrinkable multilayer film which has excellent adhesiveness between front and back layers and an interlayer not only at normal temperature but also at low temperature to effectively prevent delamination and is less likely to have residual white streaks along creases. The present invention also provides a heat shrinkable label including the heat shrinkable multilayer film. The present invention relates to a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, the front and back layers and the interlayer being stacked with the adhesive layers interposed therebetween, the adhesive layers each containing 20 to 65% by weight of a polystyrene resin and 35 to 80% by weight of a polyester elastomer.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: September 15, 2020
    Assignee: GUNZE LIMITED
    Inventors: Kiyoyasu Ishikawa, Naoyuki Maruichi, Yuki Ohama
  • Patent number: 10081166
    Abstract: The present invention provides a heat shrinkable film that has excellent heat shrinkability while preventing contamination in subsequent processes such as printing. The present invention relates to a heat shrinkable film that at least includes a front layer and/or a back layer. The front layer and the back layer each contain a cyclic olefin resin in an amount of 55 to 99.99% by weight and organic fine particles in an amount of 0.01 to 0.3% by weight.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: September 25, 2018
    Assignee: GUNZE LIMITED
    Inventors: Naoyuki Maruichi, Yuki Ohama
  • Patent number: 9827746
    Abstract: The present invention provides a heat shrinkable multilayer film that has excellent adhesiveness between front and back layers and an interlayer, effectively prevents delamination, and is less likely to have white creases on folds. The present invention also provides a heat shrinkable label formed from the heat shrinkable multilayer film. The present invention relates to a heat shrinkable multilayer film, including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, wherein the front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween, and the adhesive layers each contain 50 to 95% by weight of a polystyrene resin and 5 to 50% by weight of a polyester elastomer.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: November 28, 2017
    Assignee: GUNZE LIMITED
    Inventors: Kiyoyasu Ishikawa, Naoyuki Maruichi
  • Publication number: 20170190158
    Abstract: The present invention provides a heat shrinkable multilayer film which has excellent adhesiveness between front and back layers and an interlayer not only at normal temperature but also at low temperature to effectively prevent delamination and is less likely to have residual white streaks along creases. The present invention also provides a heat shrinkable label including the heat shrinkable multilayer film. The present invention relates to a heat shrinkable multilayer film including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, the front and back layers and the interlayer being stacked with the adhesive layers interposed therebetween, the adhesive layers each containing 20 to 65% by weight of a polystyrene resin and 35 to 80% by weight of a polyester elastomer.
    Type: Application
    Filed: August 29, 2014
    Publication date: July 6, 2017
    Inventors: Kiyoyasu ISHIKAWA, Naoyuki MARUICHI, Yuki OHAMA
  • Publication number: 20150273803
    Abstract: The present invention provides a heat shrinkable film that has excellent heat shrinkability while preventing contamination in subsequent processes such as printing. The present invention relates to a heat shrinkable film that at least includes a front layer and/or a back layer. The front layer and the back layer each contain a cyclic olefin resin in an amount of 55 to 99.99% by weight and organic fine particles in an amount of 0.01 to 0.3% by weight.
    Type: Application
    Filed: November 8, 2013
    Publication date: October 1, 2015
    Inventors: Naoyuki Maruichi, Yuki Ohama
  • Patent number: 9028933
    Abstract: The present invention is a shrink label, comprising a heat-shrinkable multilayer resin film comprising an intermediate layer comprising a polystyrene type resin and outer surface layers comprising a polyester type resin, with said intermediate layer interposed therebetween, as a base film, wherein the polystyrene type resin composing said intermediate layer is an aromatic vinyl hydrocarbon-conjugated diene copolymer, and said intermediate layer is bonded to said outer surface layers with an adhesive layer comprising a hydrogen addition product of an aromatic vinyl hydrocarbon-conjugated diene copolymer, having at least one functional group selected from the group consisting of a carboxylic group, an acid anhydride group, an amino group, an epoxy group and a hydroxyl group in a molecule.
    Type: Grant
    Filed: February 16, 2006
    Date of Patent: May 12, 2015
    Assignee: Gunze Limited
    Inventors: Naoyuki Maruichi, Takanori Nozaki, Akira Morikawa
  • Patent number: 8999466
    Abstract: An object of the present invention is to provide a multilayer stretched polyamide-based film having excellent bending resistance, thermal dimensional stability and aroma retention, whose lamination strength is measureable when a sealing layer is laminated thereon. Specifically, the invention provides a multilayer stretched polyamide-based film obtained by biaxially stretching a multilayer laminate including three layers consisting of a polyester layer (Layer A), an adhesive layer (Layer B), and a polyamide layer (Layer C), wherein Layer A contains a crystalline polyester, Layer B contains a modified polyester-based elastomer, Layer C contains an aliphatic polyamide, and Layer C has a thickness of 5 ?m or more, and wherein a sealing layer is to be laminated on Layer C by a lamination method, after biaxially stretching the multilayer laminate.
    Type: Grant
    Filed: October 21, 2009
    Date of Patent: April 7, 2015
    Assignees: Gunze Limited, Mitsubishi Chemical Corporation
    Inventors: Norio Uehara, Naoyuki Maruichi, Hiroyuki Yoshizaki, Atsushi Nakagawa
  • Publication number: 20140220369
    Abstract: The present invention provides a heat shrinkable multilayer film that has excellent adhesiveness between front and back layers and an interlayer, effectively prevents delamination, and is less likely to have white creases on folds. The present invention also provides a heat shrinkable label formed from the heat shrinkable multilayer film. The present invention relates to a heat shrinkable multilayer film, including: front and back layers each containing a polyester resin; an interlayer containing a polystyrene resin; and adhesive layers, wherein the front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween, and the adhesive layers each contain 50 to 95% by weight of a polystyrene resin and 5 to 50% by weight of a polyester elastomer.
    Type: Application
    Filed: September 4, 2012
    Publication date: August 7, 2014
    Applicant: GUNZE LIMITED
    Inventors: Kiyoyasu Ishikawa, Naoyuki Maruichi
  • Publication number: 20140162077
    Abstract: It is an object of the present invention to provide a heat-shrinkable multilayer film which, in the case of using the heat-shrinkable multilayer film as a heat-shrinkable label for a container, does not produce delamination in covering a container, is superior in heat resistance, oil resistance, tearing properties along the perforation and appearance and can prevent the reduction in strength between the layers after a printing step, and a heat-shrinkable label comprising the heat-shrinkable multilayer film as a base film. The present invention is a heat-shrinkable multilayer film which comprises: an outer surface layer comprising a polyester type resin; and an intermediate layer comprising a polystyrene type resin, said outer surface layer and said intermediate layer being laminated by interposing an adhesive layer comprising a polyester type elastomer or a modified polyester type elastomer.
    Type: Application
    Filed: February 13, 2014
    Publication date: June 12, 2014
    Applicants: Mitsubishi Chemical Corporation, GUNZE LIMITED
    Inventors: Naoyuki MARUICHI, Takanori NOZAKI, Akira MORIKAWA, Atsushi NAKAGAWA
  • Patent number: 8691394
    Abstract: It is an object of the present invention to provide a heat-shrinkable multilayer film which, in the case of using the heat-shrinkable multilayer film as a heat-shrinkable label for a container, does not produce delamination in covering a container, is superior in heat resistance, oil resistance, tearing properties along the perforation and appearance and can prevent the reduction in strength between the layers after a printing step, and a heat-shrinkable label comprising the heat-shrinkable multilayer film as a base film. The present invention is a heat-shrinkable multilayer film which comprises: an outer surface layer comprising a polyester type resin; and an intermediate layer comprising a polystyrene type resin, said outer surface layer and said intermediate layer being laminated by interposing an adhesive layer comprising a polyester type elastomer or a modified polyester type elastomer.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: April 8, 2014
    Assignees: Gunze Limited, Mitsubishi Chemical Corporation
    Inventors: Naoyuki Maruichi, Takanori Nozaki, Akira Morikawa, Atsushi Nakagawa
  • Publication number: 20130337278
    Abstract: The present invention provides a heat shrinkable multilayer film excellent in crease-whitening resistance and perforation aptness as well as excellent in low-temperature shrinkability. The present invention also provides a heat shrinkable label formed from the heat shrinkable multilayer film. The heat shrinkable multilayer film of the present invention includes: front and back layers each containing a polyester resin; an interlayer containing a polystyrene copolymer; and adhesive layers each containing 60 to 85% by weight of a polyester resin and 15 to 40% by weight of a polystyrene copolymer. The front and back layers and the interlayer are stacked with the adhesive layers interposed therebetween. The multilayer film has a tensile elongation at break of 30% or higher in the main shrinkage direction.
    Type: Application
    Filed: December 21, 2011
    Publication date: December 19, 2013
    Applicant: GUNZE LIMITED
    Inventors: Kiyoyasu Ishikawa, Naoyuki Maruichi
  • Patent number: 8481137
    Abstract: An object of the invention is to provide a multilayer stretched film with barrier property that is free from deterioration of barrier properties attributable to dimensional change caused by moisture absorption, and bending, etc. [Method for Achieving the Object] A multilayer stretched film with barrier property obtained by biaxially stretching a multilayer laminate comprising at least three layers, namely, a polyester-based resin layer (Layer A), a polyamide-based resin layer (Layer B), and a polyester-based resin layer (Layer A), in this order (wherein the two Layers A may be the same or different) to obtain a biaxially stretched multilayer film; and providing a deposition layer (Layer C) on at least one surface of the biaxially stretched multilayer film; both of the Layers A containing a crystalline polyester; Layer B containing 70 to 99 wt % of aliphatic polyamide and 1 to 30 wt % of aromatic polyamide; and Layer C containing an inorganic substance.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: July 9, 2013
    Assignees: Gunze Limited, Dai Nippon Printing Co., Ltd
    Inventors: Norio Uehara, Hiroyuki Yoshizaki, Naoyuki Maruichi
  • Patent number: 8367169
    Abstract: A multilayer stretched film with barrier property that is free from deterioration of barrier properties attributable to dimensional change caused by moisture absorption, and bending, etc. A multilayer stretched film with barrier property obtained by biaxially stretching a multilayer laminate including at least three layers, namely, a polyester-based resin layer (Layer A), a polyamide-based resin layer (Layer B), and a polyester-based resin layer (Layer A), in this order (wherein the two Layers A may be the same or different) to obtain a biaxially stretched multilayer film; and providing a deposition layer (Layer C) on at least one surface of the biaxially stretched multilayer film; both of the Layers A containing a crystalline polyester; Layer B containing 70 to 99 wt % of aliphatic polyamide and 1 to 30 wt % of aromatic polyamide; and Layer C containing an inorganic substance.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: February 5, 2013
    Assignees: Gunze Limited, Dai Nippon Printing Co., Ltd
    Inventors: Norio Uehara, Hiroyuki Yoshizaki, Naoyuki Maruichi
  • Patent number: 8314204
    Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: November 20, 2012
    Assignees: Gunze Limited, Ube Industries, Ltd.
    Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
  • Publication number: 20120040117
    Abstract: A multilayer stretched film with barrier property that is free from deterioration of barrier properties attributable to dimensional change caused by moisture absorption, and bending, etc. A multilayer stretched film with barrier property obtained by biaxially stretching a multilayer laminate including at least three layers, namely, a polyester-based resin layer (Layer A), a polyamide-based resin layer (Layer B), and a polyester-based resin layer (Layer A), in this order (wherein the two Layers A may be the same or different) to obtain a biaxially stretched multilayer film; and providing a deposition layer (Layer C) on at least one surface of the biaxially stretched multilayer film; both of the Layers A containing a crystalline polyester; Layer B containing 70 to 99 wt % of aliphatic polyamide and 1 to 30 wt % of aromatic polyamide; and Layer C containing an inorganic substance.
    Type: Application
    Filed: June 15, 2011
    Publication date: February 16, 2012
    Applicants: DAI NIPPON PRINTING CO., LTD., GUNZE LIMITED
    Inventors: Norio UEHARA, Hiroyuki Yoshizaki, Naoyuki Maruichi
  • Publication number: 20120040121
    Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.
    Type: Application
    Filed: October 25, 2011
    Publication date: February 16, 2012
    Applicants: UBE INDUSTRIES, LTD., GUNZE LIMITED
    Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
  • Patent number: 8097693
    Abstract: The present invention provides a method for producing a high-quality nonconductive or semi-conductive seamless (jointless) tubular polyimide film in a simple, efficient, and economical manner, and the like. More specifically, the invention relates to an electrically non-conductive or electrically semi-conductive seamless tubular polyimide film comprising polyimide having at least two aromatic tetracarboxylic acid derivatives comprising 15 to 55 mol % of asymmetric aromatic tetracarboxylic acid component and 85 to 45 mol % of symmetric aromatic tetracarboxylic acid component and at least one aromatic diamine component, in which, as required, a specific amount of carbon black is dispersed, and relates to a method for producing the same.
    Type: Grant
    Filed: October 8, 2004
    Date of Patent: January 17, 2012
    Assignees: Gunze Limited, UBE Industries, Ltd.
    Inventors: Naoki Nishiura, Takashi Kuraoka, Naoyuki Maruichi, Tsutomu Yoshida, Junya Kanetake, Toru Murakami
  • Publication number: 20110315590
    Abstract: [Object] An object of the invention is to provide a multilayer stretched film with barrier property that is free from deterioration of barrier properties attributable to dimensional change caused by moisture absorption, and bending, etc. [Method for Achieving the Object] A multilayer stretched film with barrier property obtained by biaxially stretching a multilayer laminate comprising at least two layers, namely, a polyester-based resin layer (Layer A) and a polyamide-based resin layer (Layer B) to obtain a biaxially stretched multilayer film; and providing a deposition layer (Layer C) on at least one surface of the biaxially stretched multilayer film; Layer A containing a crystalline polyester; Layer B containing 70 to 99 wt % of aliphatic polyamide and 1 to 30 wt % of aromatic polyamide; and Layer C containing an inorganic substance.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 29, 2011
    Applicant: GUNZE LIMITED
    Inventors: Norio Uehara, Hiroyuki Yoshizaki, Naoyuki Maruichi
  • Publication number: 20110200770
    Abstract: An object of the present invention is to provide a multilayer stretched polyamide-based film having excellent bending resistance, thermal dimensional stability and aroma retention, whose lamination strength is measureable when a sealing layer is laminated thereon. Specifically, the invention provides a multilayer stretched polyamide-based film obtained by biaxially stretching a multilayer laminate including three layers consisting of a polyester layer (Layer A), an adhesive layer (Layer B), and a polyamide layer (Layer C), wherein Layer A contains a crystalline polyester, Layer B contains a modified polyester-based elastomer, Layer C contains an aliphatic polyamide, and Layer C has a thickness of 5 ?m or more, and wherein a sealing layer is to be laminated on Layer C by a lamination method, after biaxially stretching the multilayer laminate.
    Type: Application
    Filed: October 21, 2009
    Publication date: August 18, 2011
    Applicants: GUNZE LIMITED, MITSUBISHI CHEMICAL CORPORATION
    Inventors: Norio Uehara, Naoyuki Maruichi, Hiroyuki Yoshizaki, Atsushi Nakagawa
  • Publication number: 20110117341
    Abstract: The present invention provides a film that has excellent anti-fogging properties, processability without causing curling, as a film for use in food packaging.
    Type: Application
    Filed: June 3, 2009
    Publication date: May 19, 2011
    Applicant: GUNZE LIMITED
    Inventors: Hiroyuki Yoshizaki, Norio Uehara, Naoyuki Maruichi, Takehiko Toyonaga