Patents Assigned to Kuraray Kuraflex Co., Ltd.
  • Publication number: 20230327134
    Abstract: A current collector, an electrode, and a non-aqueous electrolyte battery are provided. The current collector includes a conductive body having a three-dimensional porous structure. The current collector has an air permeability of 0.1 to 600 cc/cm2/sec and a thickness of less than 100 ?m. Also, the electrode includes the current collector and an electrode material layer disposed on at least one surface of the current collector. The non-aqueous electrolyte battery includes the electrode.
    Type: Application
    Filed: May 31, 2023
    Publication date: October 12, 2023
    Applicant: KURARAY KURAFLEX CO., LTD.
    Inventors: Yasuhiro SHIROTANI, Soichi OBATA, Tetsuya OKAMOTO, Hideharu IWASAKI
  • Publication number: 20220136149
    Abstract: Provided is a fiber structure which can have both a high filtering efficiency and a small pressure loss. The fiber structure comprises ultrafine fibers having a number average single fiber diameter of 4.5 ?m or smaller and non-ultrafine fibers having a number average single fiber diameter of 5.5 ?m or larger, wherein the ultrafine fibers and the non-ultrafine fibers are unitedly intermingled, and the fiber structure includes projections on at least one surface thereof. For example, in the fiber structure, the ultrafine fibers may be heat-resistant ultrafine fibers, and the non-ultrafine fibers may be heat-resistant non-ultrafine fibers.
    Type: Application
    Filed: January 13, 2022
    Publication date: May 5, 2022
    Applicant: KURARAY KURAFLEX CO., LTD.
    Inventors: Kazuhisa Nakayama, Toru Ochiai, Soichi Obata
  • Patent number: 11179486
    Abstract: It is an object to provide a novel wet wiper in which a sterilization effect and a wiping/cleaning effect are maintained even when the wet wiper is stored for a long period of time. A wet wiper is provided which includes: a fabric; and a chlorine-based treatment agent included in the fabric, wherein the chlorine-based treatment agent includes at least one of chlorous acid (HClO2), chlorite ion (ClO2?), and chlorine dioxide (ClO2) as an effective chlorine component.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: November 23, 2021
    Assignees: Mie University, Kuraray Kuraflex Co., Ltd.
    Inventors: Satoshi Fukuzaki, Yasurou Araida, Masako Yokomizo
  • Publication number: 20210310166
    Abstract: Provided is a fiber structure in which an extra-fine fiber layer and a substrate layer are integrated deeply. The fiber structure includes an extra-fine fiber layer 10 spreading in a plane direction, and a substrate layer 20 adjoining the extra-fine fiber layer, wherein the extra-fine fiber layer 10 includes extra-fine fibers having a number average single fiber diameter of 5 ?m or less; the substrate layer 20 includes non-extra-fine fibers having a number average single fiber diameter of 7 ?m or more; and in a cross section along a thickness direction of the fiber structure, the substrate layer 20 contains mixture portions 12 in each of which some of the extra-fine fibers pushed between the non-extra-fine fibers are widened in a crosswise direction.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Applicant: KURARAY KURAFLEX CO., LTD.
    Inventors: Kazuhisa NAKAYAMA, Toru OCHIAI, Soichi OBATA
  • Publication number: 20200017382
    Abstract: A chlorine neutralizer which can be used and manufactured in a simplified manner, a throw-in type chlorine neutralizer containing the same, a chlorine neutralizing apparatus, and a chlorine neutralizing method are provided. A chlorine neutralizer which neutralizes a chlorine-based component contains at least one selected from a vinyl alcohol based polymer and a polyamide resin, and the vinyl alcohol based polymer contains at least vinyl alcohol in a repeating structural unit.
    Type: Application
    Filed: September 21, 2017
    Publication date: January 16, 2020
    Applicants: Mie University, Kuraray Kuraflex Co., Ltd.
    Inventors: Satoshi FUKUZAKI, Yasurou ARAIDA, Masako YOKOMIZO
  • Patent number: 10507142
    Abstract: A fiber assembly including fibrils including a fibril which is a part of a fiber extending in a direction of thickness of the fiber assembly and including a network structure formed with a binding portion resulting at least any from binding between fibrils and binding between a fibril and a fiber in at least any end portion in the direction of thickness of the fiber assembly and a liquid absorbent sheet-like article including the same as well as a fiber assembly which is excellent in diffusion of a liquid particularly at a surface and absorption thereof in the inside and includes fibrils and a liquid absorbent sheet-like article including the same as well as a method of manufacturing the fiber assembly can be provided.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: December 17, 2019
    Assignee: KURARAY KURAFLEX CO., LTD.
    Inventors: Tooru Ochiai, Yasurou Araida, Sumito Kiyooka
  • Publication number: 20190255203
    Abstract: It is an object to provide a novel wet wiper in which a sterilization effect and a wiping/cleaning effect are maintained even when the wet wiper is stored for a long period of time. A wet wiper is provided which includes: a fabric; and a chlorine-based treatment agent included in the fabric, wherein the chlorine-based treatment agent includes at least one of chlorous acid (HClO2), chlorite ion (ClO2?), and chlorine dioxide (ClO2) as an effective chlorine component.
    Type: Application
    Filed: September 21, 2017
    Publication date: August 22, 2019
    Applicants: Mie University, Kuraray Kuraflex Co., Ltd.
    Inventors: Satoshi FUKUZAKI, Yasurou ARAIDA, Masako YOKOMIZO
  • Publication number: 20180263825
    Abstract: A fiber assembly including fibrils including a fibril which is a part of a fiber extending in a direction of thickness of the fiber assembly and including a network structure formed with a binding portion resulting at least any from binding between fibrils and binding between a fibril and a fiber in at least any end portion in the direction of thickness of the fiber assembly and a liquid absorbent sheet-like article including the same as well as a fiber assembly which is excellent in diffusion of a liquid particularly at a surface and absorption thereof in the inside and includes fibrils and a liquid absorbent sheet-like article including the same as well as a method of manufacturing the fiber assembly can be provided.
    Type: Application
    Filed: December 29, 2015
    Publication date: September 20, 2018
    Applicant: KURARAY KURAFLEX CO., LTD.
    Inventors: Tooru OCHIAI, Yasurou ARAIDA, Sumito KIYOOKA
  • Patent number: 9890487
    Abstract: A liquid-retaining sheet contains a liquid-retaining layer that is able to absorb a liquid component, and the liquid-retaining layer is formed from a nonwoven structural member containing a transparent fiber. In the liquid-retaining sheet, the transparency shown below is adjusted to not more than 0.27. Transparency=Whiteness (%) of a sheet impregnated with 700% by mass of water relative to the sheet mass/Basis weight (g/m2) The transparent fiber may contain a cellulose-series fiber substantially free from a carboxyl group (in particular, a regenerated cellulose fiber such as a solvent-spinning cellulose-series fiber). The proportion of the solvent-spinning cellulose-series fiber may be not less than 30% by mass in the transparent fiber. The liquid-retaining sheet may be a skin care sheet (in particular, a facial mask) that is impregnated with a liquid component containing a cosmetic preparation.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: February 13, 2018
    Assignee: KURARAY KURAFLEX CO., LTD.
    Inventors: Toru Ochiai, Kazuhisa Nakayama, Sumito Kiyooka, Nobuo Araya, Naoaki Moritani
  • Publication number: 20150125499
    Abstract: A liquid-retaining sheet contains a liquid-retaining layer that is able to absorb a liquid component, and the liquid-retaining layer is formed from a nonwoven structural member containing a transparent fiber. In the liquid-retaining sheet, the transparency shown below is adjusted to not more than 0.27. Transparency=Whiteness (%) of a sheet impregnated with 700% by mass of water relative to the sheet mass/Basis weight (g/m2) The transparent fiber may contain a cellulose-series fiber substantially free from a carboxyl group (in particular, a regenerated cellulose fiber such as a solvent-spinning cellulose-series fiber). The proportion of the solvent-spinning cellulose-series fiber may be not less than 30% by mass in the transparent fiber. The liquid-retaining sheet may be a skin care sheet (in particular, a facial mask) that is impregnated with a liquid component containing a cosmetic preparation.
    Type: Application
    Filed: June 11, 2013
    Publication date: May 7, 2015
    Applicant: Kuraray Kuraflex Co., Ltd.
    Inventors: Toru Ochiai, Kazuhisa Nakayama, Sumito Kiyooka, Nobuo Araya, Naoaki Moritani
  • Publication number: 20110266088
    Abstract: A soundproof panel comprising a nonwoven structural member and a board member is prepared. The nonwoven structural member comprises a thermal adhesive fiber under moisture which is melt-bonded to a fiber of the structural member to fix the fibers. The soundproof panel may be a soundproof panel 1 comprising a nonwoven structural member 2 and a honeycomb member 3 stacked thereto. Moreover, the soundproof panel may be a soundproof panel comprising a board-like nonwoven structural member and first and second surface members stacked to first and second sides of the board-like nonwoven structural member, respectively. Further, the soundproof panel may be a soundproof panel having first and second surface members stacked through a square-pole rail member comprising a nonwoven structural member. The soundproof panel of the present invention has toughness for the lightweight design and has excellent sound absorption and sound insulation properties.
    Type: Application
    Filed: January 13, 2010
    Publication date: November 3, 2011
    Applicant: KURARAY KURAFLEX CO., LTD.
    Inventors: Masaru Koike, Tomoaki Kimura, Masato Iizumi
  • Publication number: 20100203788
    Abstract: In a nonwoven fiber assembly which comprises a fiber comprising a thermal adhesive fiber under moisture and in which the fiber are entangled with each other, the fibers are bonded at contacting points of the fibers by melting the thermal adhesive fiber under moisture to distribute the bonded points approximately uniformly, thereby obtaining a buffer substrate. The buffer substrate may further comprises a conjugated fiber comprising a plurality of resins which are different in thermal shrinkage and form a phase separation structure, and the conjugated fibers may have an approximately uniform crimps having an average curvature radius of 20 to 200 ?m and are entangled with the fibers constituting the nonwoven fiber assembly.
    Type: Application
    Filed: August 27, 2008
    Publication date: August 12, 2010
    Applicant: Kuraray Kuraflex Co., Ltd.
    Inventors: Tomoaki Kimura, Toru Ochiai, Sumito Kiyooka, Satoshi Koizumi, Kazuhiro Muraki
  • Publication number: 20100035500
    Abstract: To produce a nonwoven fabric comprising a conjugated fiber comprising a plurality of resins which are different in thermal shrinkage and form a phase separation structure. In the nonwoven fabric, the conjugated fibers are arranged in a direction approximately parallel to a surface direction of the nonwoven fabric and crimped. In addition, the conjugated fibers have an average curvature radius of fiber crimp of 20 to 200 ?m and the crimps are distributed approximately uniformly in a thickness direction of the nonwoven fabric. The nonwoven fabric is substantially free from an adhesive agent. In the nonwoven fabric, each fiber is substantially not melt-bonded to another. The conjugated fiber may comprise a polyalkylene arylate-series resin and a modified polyalkylene arylate-series resin and have a side-by-side or eccentric sheath-core form.
    Type: Application
    Filed: July 27, 2007
    Publication date: February 11, 2010
    Applicant: Kuraray Kuraflex Co., Ltd.
    Inventors: Tomoaki Kimura, Yasuro Araida, Toru Ochiai, Sumito Kiyooka
  • Publication number: 20090130939
    Abstract: To prepare a shaped product comprising a thermal adhesive fiber under moisture and having a fiber aggregate nonwoven structure. In the shaped product, the thermal adhesive fibers under moisture are melted to bond to fibers constituting the fiber aggregate nonwoven structure and the bonded fiber ratio is not more than 85%. The shaped product has an apparent density of 0.05 to 0.7 g/cm3, a maximum bending stress of not less than 0.05 MPa in at least one direction, and a bending stress of not less than ? of the maximum bending stress at 1.5 times as large as the bending deflection at the maximum bending stress. The moistenable-thermal adhesive fiber may be a sheath-core form conjugated fiber comprising a sheath part comprising an ethylene-vinyl alcohol-series copolymer and a core part comprising a polyester-series resin. Such a shaped product can be used for a building board or the like since the shaped product has a high bending stress although the product is light and has a low density.
    Type: Application
    Filed: March 26, 2007
    Publication date: May 21, 2009
    Applicant: Kuraray Kuraflex Co., Ltd.
    Inventors: Tomoaki Kimura, Yasuro Araida, Toru Ochiai, Sumito Kiyooka
  • Patent number: D830199
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: October 9, 2018
    Assignee: KURARAY KURAFLEX CO., LTD.
    Inventors: Koki Ogata, Toshiaki Nakata, Haruhiko Asai