Patents Assigned to Sekisui Plastics Co., Ltd.
  • Publication number: 20200325283
    Abstract: The present invention provides non-spherical metal-coated irregularly-shaped resin particles that can improve characteristics, such as light diffusion characteristics and reflection characteristics, when used for optical applications, compared with spherical metal-coated resin particles. Specifically, the present invention provides metal-coated irregularly-shaped resin particles in which part of the surface of irregularly-shaped resin particles is coated with metal.
    Type: Application
    Filed: March 31, 2017
    Publication date: October 15, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Ryosuke HARADA, Eiji TOKUNAGA, Sou AIZAWA, Keisuke SETO
  • Patent number: 10787106
    Abstract: A method for producing a vehicle seat member in which a frame member having protrusions is integrally molded to a foamed resin molded body is provided. The method comprises an in-mold foam molding step of placing the frame member in a mold, packing prefoamed resin particles, and molding the foamed resin molded body by in-mold foam molding; and a demolding step of removing the mold to obtain the vehicle seat member, wherein in the in-mold foam molding step, the foamed resin molded body is molded so that (B?A)/B is 13/1000 or less, wherein A is an outer dimension of the foamed resin molded body in the vehicle seat member obtained by the demolding step and B is an inner dimension of the mold corresponding to the outer dimension of the foamed resin molded body.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 29, 2020
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventor: Yushi Sakakibara
  • Patent number: 10773623
    Abstract: Provided is a method for suppressing deformation by contraction after molding of a vehicle seat member comprising a foamed resin molded body embedding a frame member. The method manufactures a vehicle seat member (1) including a foamed resin molded body (100) and a frame member (200) at least a part of which is embedded therein in which the frame member (200) includes frameworks (250), (260) extending inside the foamed resin molded body (100) along an outer shape (400) of the vehicle seat member (1) in plan view. The method comprises forming gaps (101), (101), (102), (102) along an extending direction of the frameworks (250), (260) between at least a part of the frameworks (250), (260) and a part of the foamed resin molded body (100) located on an outer side of the at least a part of the frameworks (250), (260).
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: September 15, 2020
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventor: Yushi Sakakibara
  • Publication number: 20200253555
    Abstract: An adhesive hydrogel has low contact resistance against the body surface and excellent conformability and adhesiveness to the body surface, so that noise generation can be reduced. Such adhesive hydrogel enables measurements of weak fetal heart rate signals. The adhesive hydrogel includes a polymer matrix prepared by crosslinking-copolymerization of an acrylamide derivative, which is a nonionic polymerizable monomer including a polymerizable carbon-carbon double bond in a molecule, and polyfunctional (meth)acrylamide, which is a crosslinkable monomer comprising 2 or more polymerizable carbon-carbon double bonds in a molecule, water, a polyvalent alcohol, and an electrolyte salt, wherein a laminate of the adhesive hydrogel with an Ag/AgCl sheet exhibits the impedance of 1? to 100? at the frequency of 0.1 Hz measured in accordance with the method of ANSI/AAMI EC12:2000, and the dynamic elastic modulus G? at the frequency of 1 Hz measured at 25° C. and dispersed frequencies is 1.0×103 Pa to 1.0×104 Pa.
    Type: Application
    Filed: September 27, 2018
    Publication date: August 13, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Takaaki HATORI, Takahiko FUJITA, Kazuhiro YOSHIKAWA
  • Patent number: 10723055
    Abstract: A resin composite having excellent strength is easily produced by using a resin foam having a specific surface roughness (Ra) as the core material of the resin composite.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: July 28, 2020
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Yusuke Kuwabara, Kazutoshi Hitomi
  • Publication number: 20200190266
    Abstract: A hydrogel has water, a polyvinylsulfonic acid-based polymer, and a polymer matrix containing the water and the polyvinylsulfonic acid-based polymer, in which the polymer matrix contains a copolymer of a monofunctional monomer having one ethylenically unsaturated group and a polyfunctional monomer having 2 to 6 ethylenically unsaturated groups, the copolymer has a hydrophilic group binding to its main chain, the polymer matrix is contained in an amount of 2 to 80 parts by mass in 100 parts by mass of the hydrogel, a polymer derived from the polyfunctional monomer is contained in a proportion of 0.1 to 5 parts by mass in 100 parts by mass of the copolymer, the polyvinylsulfonic acid-based polymer is contained in an amount of 0.1 to 150 parts by mass in 100 parts by mass of the polymer matrix, and the polyvinylsulfonic acid-based polymer has a weight average molecular weight of 200,000 to 3,000,000.
    Type: Application
    Filed: May 18, 2018
    Publication date: June 18, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Ryo AKUTA, Koichiro OKAMOTO
  • Publication number: 20200189253
    Abstract: The present invention relates to a laminated foam sheet including a foam layer and a non-foam layer positioned on one surface or both surfaces of the foam layer, in which a closed cell ratio of the foam layer is 70% or more and a thickness is 2.0 to 6.0 mm, and the non-foam layer includes a non-crosslinked olefin-based elastomer.
    Type: Application
    Filed: September 25, 2018
    Publication date: June 18, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Hiroaki KITADE, Tadakazu ANAN, Kouji UEDA, Yosuke KAWAMORITA
  • Patent number: 10647035
    Abstract: Provided are a vehicle seat member in which even when a foamed resin molded body forming the vehicle seat member shrinks after being demolded, influence of the shrinkage behavior on a frame member embedded in the foamed resin molded body can be prevented, and thus a change in the position of a protrusion, which serves as a part to be anchored to a vehicle body, of the frame member can be prevented, whereby the vehicle seat member can be attached to the vehicle body side easily and reliably, and a vehicle seat including such a vehicle seat member. A vehicle seat member includes a foamed resin molded body and a frame member integrally formed therewith, the frame member including a body portion embedded in the foamed resin molded body and protrusions each protruding from the body portion and having a tip end protruding outward from the foamed resin molded body.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: May 12, 2020
    Assignee: Sekisui Plastics Co., Ltd.
    Inventor: Yushi Sakakibara
  • Publication number: 20200131306
    Abstract: Spherical polyester-based resin particles characterized in that the spherical polyester-based resin particles contain a polyester-based resin and have a crystallinity of 20% or less and an average circularity of 0.96 or more. The spherical polyester-based resin particles according to the present invention can provide suitable resin particles as compounding agents for cosmetics such as foundation, antiperspirants, and skin scrubs; various agents such as matte coating agents for paints, rheology modifying agents, antiblocking agents, slipperiness-imparting agents, light diffusion agents, electroconductive agents, and diagnostic testing agents for medical use; and additives to molded articles such as automobile materials and construction materials.
    Type: Application
    Filed: March 20, 2018
    Publication date: April 30, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventor: Ryosuke HARADA
  • Publication number: 20200123339
    Abstract: A bead expanded article has a plurality of expanded particles, in which the bead expanded article has a property that a value obtained by dividing a 10% compression stress (MPa) of the bead expanded article by a density (g/cm3) is 9.0 (MPa·cm3/g) or more.
    Type: Application
    Filed: July 26, 2018
    Publication date: April 23, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Hironori KOBAYASHI, Haruka FURUNAGA
  • Publication number: 20200108531
    Abstract: In outer shape processing of a resin expanded sheet having a resin expanded layer including a polyamide-based resin composition, the outer shape processing is carried out while allowing a specified amount or more of moisture to be contained in the resin expanded layer.
    Type: Application
    Filed: December 5, 2019
    Publication date: April 9, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Haruhiko MATSUURA, Hironori KOBAYASHI, Masahiro SHINDO, Tetsuro TAI
  • Publication number: 20200102439
    Abstract: Provided is a bead expanded molded article comprising a plurality of resin expanded particles that are fusion-bonded with each other, in which the resin expanded particles mainly include a resin having a glass transition temperature of 180° C. or more.
    Type: Application
    Filed: December 3, 2019
    Publication date: April 2, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Hiromaru YAMAMOTO, Hironori KOBAYASHI, Haruhiko MATSUURA
  • Patent number: 10576709
    Abstract: The resin composite of the present invention has a polyamide-based resin expanded sheet, and a fiber-reinforced resin layer integrally laminated on a surface of the polyamide-based resin expanded sheet.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: March 3, 2020
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Hironori Kobayashi, Haruhiko Matsuura, Yusuke Kuwabara
  • Patent number: 10550280
    Abstract: Provided are hollow particles each having a shell including at least one layer, wherein the hollow particles have an average particle diameter of 10 to 200 nm and the at least one layer contains a vinyl-based resin.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: February 4, 2020
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Yugo Katayama, Kengo Nishiumi, Ayumi Kiyohara, Shuichi Sasahara, Haruhiko Matsuura, Junko Kubo
  • Publication number: 20200032122
    Abstract: Organic-inorganic composite particles include: a vinyl polymer that is a polymer of a polymerizable vinyl monomer; and inorganic particles including inorganic oxide and/or inorganic nitride. The thermal conductivity of the inorganic particles is 10 W/(m·K) or more. The inorganic particles are subjected to a surface treatment by acidic phosphoric acid ester having no polymerizable functional group, and by at least one polymerizable compound selected from the group consisting of: carboxylic acid having a polymerizable functional group; acidic phosphoric acid ester having a polymerizable functional group; and lactone having a polymerizable functional group. The polymerizable compound is bonded to the vinyl polymer, and the inorganic particles are unevenly located on surface layers of the organic-inorganic composite particles so that the inorganic particles form one or more layers.
    Type: Application
    Filed: March 30, 2018
    Publication date: January 30, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventor: Kengo NISHIUMI
  • Patent number: 10543628
    Abstract: A molded foam is provided in which even when a force in a sliding direction is applied to another member in contact with its surface, the occurrence of a shift in position relative to the other member can effectively be prevented and the occurrence of unusual noise due to rubbing between its surface and the other member can effectively be prevented. The molded foam is formed by heating expandable resin particles filled into a foaming mold. The molded foam has a plurality of first ridges arranged in one direction and a plurality of second ridges arranged in another direction and disposed so as to intersect the first ridges, the first and second ridges being provided on the surface of the molded foam.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: January 28, 2020
    Assignee: Sekisui Plastics Co., Ltd.
    Inventors: Koji Mori, Yushi Sakakibara, Masamitsu Kondo, Motokazu Yoshii
  • Publication number: 20200016300
    Abstract: A hydrogel 1 having a laminate structure of layer A 10 and layer B 20, wherein layer A 10 contains a monomer-derived component, water, a humectant, a water-insoluble polymer having tackiness and an amphiphilic polymer, the water-insoluble polymer is contained in a proportion of 3 to 20 wt % based on a total amount of layer A, and the amphiphilic polymer is a polyvinyl alcohol having a saponification degree of 50 to 75% and is contained in a proportion of 0.05 to 5 wt % based on the total amount of layer A; layer B 20 contains a monomer-derived component, water and a humectant and is substantially free of a water-insoluble polymer having tackiness and a polyvinyl alcohol; and an amount of the water based on a total amount of layer B is the amount of water based on the total amount of layer A±10 wt %.
    Type: Application
    Filed: September 22, 2017
    Publication date: January 16, 2020
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Ryo IIZUKA, Kazuki KATO
  • Patent number: 10501586
    Abstract: Polyester-based resin particles including a polyester-based resin as a base resin, in which the base resin exhibits a plurality of endothermic peaks corresponding to crystal melting temperatures by DSC measurement, at least one of the endothermic peaks exists in each region of a low temperature side region and a high temperature side region, a maximum endothermic peak of the low temperature side region and a maximum endothermic peak of the high temperature side region exhibit a crystal melting heat amount ratio (low temperature side crystal melting heat amount/high temperature side crystal melting heat amount) in a range of 0.1 to 1.5, and the polyester-based resin particles have a volume average particle diameter of 1 to 50 ?m.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: December 10, 2019
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Akiyoshi Kusaka, Kaori Kuwagaki, Ryosuke Harada
  • Publication number: 20190313931
    Abstract: The present invention is intended to provide a gel sheet having a formulation providing an adhesive force on the skin side suitable for the skin (i.e., a gel having a low adhesive force and being able to withstand a tip pressure of a terminal and the like), and concurrently having a sufficient adhesive force against an electrode element on the side opposite to the skin side. The present invention is a gel sheet having a laminated structure of a layer A and a layer B, characterized in that the storage elastic modulus of the layer A at 23° C. and 10 Hz is 12,000 to 40,000 Pa, and the storage elastic modulus of the layer B at 23° C. and 10 Hz is 2,000 to 10,000 Pa.
    Type: Application
    Filed: September 22, 2017
    Publication date: October 17, 2019
    Applicant: SEKISUI PLASTICS CO., LTD.
    Inventors: Kazuki KATO, Ryo IIZUKA, Yoshiki NAKAYAMA
  • Publication number: 20190300670
    Abstract: An ester-based elastomer expanded molded article comprising a fusion of expanded particles that contain an ester-based elastomer as a base resin.
    Type: Application
    Filed: May 1, 2017
    Publication date: October 3, 2019
    Applicants: SEKISUI PLASTICS CO., LTD., TOYOBO CO., LTD.
    Inventors: Hirotaka KONDO, Yuichi GONDOH