Patents Assigned to Seiren Co., Ltd.
  • Publication number: 20240026603
    Abstract: A synthetic leather according to an embodiment includes: a fibrous substrate; an adhesive layer containing a yellowing-resistant polycarbonate-based polyurethane resin and/or a yellowing polycarbonate-based polyurethane resin; and a skin layer that contains a yellowing-resistant polycarbonate-based polyurethane resin and that is laminated on the fibrous substrate via the adhesive layer. The synthetic leather has excellent oleic acid resistance.
    Type: Application
    Filed: December 24, 2021
    Publication date: January 25, 2024
    Applicant: SEIREN CO., LTD.
    Inventors: Yasuki NABATA, Yoshiharu KATO
  • Patent number: 11814783
    Abstract: Provided is a synthetic leather in which the occurrence of ease wrinkles can be inhibited or reduced. This synthetic leather comprises a cloth (10), and a resin layer (20) laminated on the cloth (10). The cloth (10) is a tricot knitted fabric knitted with front yarn, middle yarn, and back yarn, and having a nap (12). The tricot knitted fabric has a cord stitch structure knitted with the front yarn, a denbigh stitch structure or cord stitch structure knitted with the middle yarn, and an inlay structure or cord stitch structure knitted with the back yarn. The nap (12) is formed by napping a sinker loop side of the tricot knitted fabric.
    Type: Grant
    Filed: February 11, 2021
    Date of Patent: November 14, 2023
    Assignee: SEIREN CO., LTD.
    Inventor: Kazunori Kawamura
  • Patent number: 11752969
    Abstract: A non-coated air bag base cloth of the present invention is constituted by a fabric formed using a yarn containing polyethylene terephthalate as a main raw material, in which a single fiber strength of a yarn of the fabric is 7.30 to 8.50 cN, a single fiber fineness of a yarn of the fabric is 1.6 to 3.9 dtex, and a cover factor is 2400 to 2800.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: September 12, 2023
    Assignee: SEIREN CO., LTD.
    Inventors: Shota Kodera, Tsuyoshi Houraiya
  • Patent number: 11752968
    Abstract: Provided is a non-coated air bag fabric capable of solving problems regarding smoothness of a fabric surface while having low air permeability, and an air bag including the same. The non-coated air bag fabric according to the present invention includes a plurality of weft threads and a plurality of warp threads, in which the weft threads and the warp threads are constituted by multifilament threads in which polyethylene terephthalate fibers are used, the number of filaments in each of the multifilament threads is 122 to 242, and a warp/weft average MMD (a mean deviation of coefficient of friction) of a surface is 0.02 or less.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: September 12, 2023
    Assignee: SEIREN CO., LTD.
    Inventor: Shota Kodera
  • Patent number: 11708664
    Abstract: A synthetic leather comprising a substrate, a skin layer that is disposed on one main surface of the substrate, and an anti-stain layer that is disposed to cover the skin layer. The anti-stain layer contains a base resin that comprises silicon and a unit derived from a compound that has a urethane bond. In the anti-stain layer, a fluorine atom/silicon atom atomic ratio, which is a proportion of a fluorine atom to the silicon atom, is 0.01 or less. A first color difference ?E1* between before and after a stain adhesion test performed on the synthetic leather rubbed under a specific condition is 5 or less.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: July 25, 2023
    Assignee: Seiren Co., Ltd.
    Inventor: Yusuke Wanibuchi
  • Publication number: 20230144245
    Abstract: A non-coated air bag fabric according to the present invention includes a plurality of weft yarns and a plurality of warp yarns, in which the weft yarns and the warp yarns are constituted by multifilament yarns in which polyethylene terephthalate fibers are used, the number of filaments in each of the multifilament yarns ranges from 122 to 242, and a coefficient of kinetic friction of a surface of the fabric ranges from 1.15 to 1.25 or less, the coefficient of kinetic friction being calculated when a friction block in which polyvinyl chloride is used is brought into contact with the fabric placed on a stage that is rotating at a rotation speed of 663 rpm, at a load of 5 N, using a torque type friction and wear tester.
    Type: Application
    Filed: March 30, 2021
    Publication date: May 11, 2023
    Applicant: SEIREN CO., LTD.
    Inventors: Shota KODERA, Tsuyoshi HOURAIYA
  • Patent number: 11597180
    Abstract: Provided is a composite material for vehicles capable of substantially preventing the occurrence of wrinkles caused by ease stitching. This composite material for vehicles is a layered product of a skin material and a polyurethane foam sheet. The skin material has a play structure which, when the composite material for vehicles is stitched, allows the skin material to follow deformation caused by the stitching with a smooth state of a surface of the skin material maintained. The skin material is a woven fabric including warp yarns and weft yarns. The warp yarns and/or the weft yarns include two or more types of yarns having different total finenesses, and form the play structure.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 7, 2023
    Assignees: SEIREN CO., LTD., TOYOTA BOSHOKU KABUSHIKI KAISHA
    Inventors: Naohiro Wada, Hayato Wakatsuki, Toshio Nakamura
  • Patent number: 11560115
    Abstract: The present invention relates to an airbag base fabric including a woven fabric made from a yarn containing polyethylene terephthalate as the main raw material, the yarn having a single fiber fineness of 1.0 to 3.9 dtex and a total fineness of 280 to 470 dtex, and, in a Raman spectrum obtained by irradiating the yarn with a He—Ne laser with a wavelength of 630 nm, Ix/I0 being 1.20 or more, where Ix is the spectral intensity at 3083 cm?1, and I0=277.4.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: January 24, 2023
    Assignee: SEIREN CO., LTD.
    Inventors: Shota Kodera, Tsuyoshi Houraiya
  • Patent number: 11482999
    Abstract: A capacitive sensor includes: a substrate that is in the form of a sheet; and a sensor electrode that is capacitive and disposed on a frontside of the substrate. The sensor electrode is a conductive fabric made by applying a metal plating on a mesh fabric that is woven of a plurality of warps and a plurality of wefts and that has openings each formed by two adjacent warps among the plurality of warps and two adjacent wefts among the plurality of wefts. An area defined by a maximum outside diameter of a warp or weft is smaller than an area of an opening space of each of the openings.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: October 25, 2022
    Assignees: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., SEIREN CO., LTD.
    Inventors: Wataru Takahara, Toshinori Sasaji
  • Patent number: 11414794
    Abstract: Provided is an airbag base fabric that is a woven fabric constituted by a yarn containing polyethylene terephthalate as the main raw material, the yarn constituting the woven fabric having a total fineness of 280 to 500 dtex and a single fiber fineness of 1.0 to 3.9 dtex, the woven fabric having a cover factor of 2400 to 2800, and the D-value calculated from the thickness D1 of a single sheet of the base fabric and the thickness D10 of ten sheets of the base fabric that are stacked together being 0.9 or less, where the D-value is calculated using a formula A below: D=D10/(D1×10).
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: August 16, 2022
    Assignee: SEIREN CO., LTD.
    Inventors: Shota Kodera, Tsuyoshi Houraiya
  • Patent number: 11414042
    Abstract: A non-coated air bag fabric according to the present invention is woven using fibers containing polyethylene terephthalate as a main raw material, the fabric has a cover factor of 2350 or more, and a single fiber fineness of a yarn that constitutes the fabric is 2.0 dtex to 4.0 dtex inclusive.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: August 16, 2022
    Assignee: SEIREN CO., LTD.
    Inventor: Shota Kodera
  • Patent number: 11390241
    Abstract: A non-coated air bag fabric is a fabric constituted by synthetic fibers, and the fabric has a cover factor of 2300 or more, a height difference between a recess and a protrusion on a surface of the fabric is less than 130 ?m, and a P ratio expressed by the following equation is 0.85 to 1.15 inclusive. The P ratio=HP100/HP80 where HP80 indicates air permeability after a load is applied to the fabric under a condition of 80° C., and HP100 indicates air permeability after a load is applied to the fabric under a condition of 100° C.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: July 19, 2022
    Assignee: SEIREN CO., LTD.
    Inventor: Tsuyoshi Houraiya
  • Publication number: 20220220667
    Abstract: Provided is a synthetic leather including a fibrous substrate, a porous resin layer provided on the fibrous substrate, and a non-porous resin layer provided on the porous resin layer. The synthetic leather has a thickness of 800 ?m or more, and a vertical cross-section of the porous resin layer has a pore area ratio of 25% or more.
    Type: Application
    Filed: May 12, 2020
    Publication date: July 14, 2022
    Applicant: SEIREN CO., LTD.
    Inventor: Haruki Ito
  • Patent number: 11198960
    Abstract: A warp knitted fabric formed of yarns fed from at least three guide bars including front, middle, and back guide bars, in which a back yarn fed from the back guide bar forms a cord knit texture, a front yarn fed from the front guide bar and a middle yarn fed from the middle guide bar are arranged alternately in a weft direction, each of the front yarn and the middle yarn forms a stitch formation texture (a denbigh knit texture or a cord knit texture) and an insertion texture alternately in a warp direction, and the insertion texture formed by the front yarn and the insertion texture formed by the middle yarn are arranged alternately at least in the warp direction so that the front yarn and the middle yarn are exposed alternately at least in the warp direction on sinker loops of the back yarn.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: December 14, 2021
    Assignee: SEIREN CO., LTD.
    Inventors: Yuichi Taniguchi, Isao Honda
  • Patent number: 11192324
    Abstract: A composite material for vehicle interior, including: a skin material disposed at one outermost side of the composite material, and having a first principal surface and a second principal surface opposite the first principal surface; and a backing material disposed at the other outermost side of the composite material, so as to face the second principal surface of the skin material. The skin material is formed of a fiber structure body, and has a plurality of first fold lines of folding with the first principal surface of the skin material outward, and a plurality of second fold lines of folding with the first principal surface inward. The first fold lines adjacent to each other are parallel to each other or form an acute angle ?1 of 10° or less, the second fold lines adjacent to each other are parallel to each other or form an acute angle ?2 of 10° or less, and the first fold line and the second fold line adjacent to each other are parallel to each other or form an acute angle ?12 of 10° or less.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: December 7, 2021
    Assignee: SEIREN CO., LTD.
    Inventor: Daisuke Kawabata
  • Patent number: 11060240
    Abstract: Provided is synthetic leather with wrinkling and springiness similar to those of natural leather. The synthetic leather has a grain pattern and is obtained by laminating a polyurethane resin layer on a fibrous substrate. A stiffness of the front surface of the synthetic leather is 65 to 95 mm and a stiffness of a rear surface of the synthetic leather is 55 to 85 mm.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: July 13, 2021
    Assignee: SEIREN CO., LTD.
    Inventor: Michio Shinozaki
  • Patent number: 11052862
    Abstract: Provided is an air bag base cloth constituted by a composite material obtained by coating fabric made of synthetic fibers with a synthetic resin. The average value of the 100% modulus in the warp direction of the fabric texture included in the composite material and the 100% modulus in the weft direction of the fabric texture included in the composite material is 50 N/cm or less. The 100% elongation recovery rate is 95% or more. The 100% elongation load air permeability is 0.1 L/cm2·min or less both before and after thermal treatment at 100° C.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: July 6, 2021
    Assignee: SEIREN CO., LTD.
    Inventor: Tsuyoshi Houraiya
  • Publication number: 20210197751
    Abstract: An air bag base cloth according to the present invention includes a base cloth main body formed of synthetic fibers, and a synthetic resin layer with which at least one face of the base cloth main body is coated, and the moisture content measured in accordance with JIS L 1096.8.10 is 0.5% or less.
    Type: Application
    Filed: October 31, 2018
    Publication date: July 1, 2021
    Applicant: SEIREN CO., LTD.
    Inventors: Shota KODERA, Tsuyoshi HOURAIYA
  • Publication number: 20210189615
    Abstract: Provided is a circular knitted fabric that has a good balance in elongation between a wale direction and a course direction, and also a knitted pattern. A circular knitted fabric having a 1×1 rib jacquard knitted structure as a basic structure, in which non-elastic fiber yarn and elastic fiber yarn are fed as a full set and are plate-knitted, knit-loops account for 10 to 90% of all structures, and at least any one of a tuck and a welt is included so that a knitted pattern is formed on a knitted fabric surface due to a difference between structures by location, elongation in each of a wale direction and a course direction is 100 to 280% under a load condition of 14.7 N/2.54 cm, and an elongation ratio, that is, (elongation in wale direction)/(elongation in course direction), is 0.5 to 2.0 under the load condition of 14.7 N/2.54 cm.
    Type: Application
    Filed: June 11, 2019
    Publication date: June 24, 2021
    Applicant: SEIREN CO., LTD.
    Inventors: Katsuhiko Yanagi, Sachiharu Kizu, Kiyotake Kishimoto
  • Publication number: 20210178425
    Abstract: A method for manufacturing a flexible sheet-shaped material includes a preceding process and a succeeding process. The preceding process is a process for applying a first coating liquid to a material to be coated by a first roll coater. The material to be coated includes a convex portion and becomes the sheet-shaped material. The succeeding process is a process which is performed after the preceding process and which applies a second coating liquid to the material to be coated by a second roll coater. The preceding process is a process for applying the first coating liquid only to the convex portion using a reverse roll coater as the first roll coater. The succeeding process is a process for applying the second coating liquid only to the convex portion by the second roll coater.
    Type: Application
    Filed: May 28, 2019
    Publication date: June 17, 2021
    Applicant: SEIREN CO., LTD.
    Inventor: Jun Syoyama