Patents Assigned to Bando Chemical Industries, Ltd.
  • Patent number: 11975515
    Abstract: The present invention addresses the problem of providing a surface-protective film which is excellent in terms of antiglare property, scratch resistance, and oil resistance. Provided as a means for solving the problem is a surface-protective film which comprises a protective layer constituted of a polyurethane, both surfaces of the protective layer being flat, and a hardcoat layer formed on one of the surfaces of the protective layer, wherein the hardcoat layer has an arithmetic average roughness Ra of equal to or greater than 0.1 and equal to or less than 0.8 ?m.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: May 7, 2024
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Yutaka Kamada, Hiroki Uozumi
  • Publication number: 20240141154
    Abstract: A crosslinked rubber composition includes: a rubber component containing a first polymer which is an ethylene-?-olefin elastomer having an ethylene content of less than 60% by mass and a second polymer which is an ethylene-?-olefin elastomer having an ethylene content of 60% by mass or more; and short fibers dispersed in the rubber component. The rubber component is crosslinked by using organic peroxide as a crosslinking agent. The content of the organic peroxide in a not-yet crosslinked rubber composition is 1 part by mass or more and 10 parts by mass or less relative to 100 parts by mass of the rubber component.
    Type: Application
    Filed: January 7, 2024
    Publication date: May 2, 2024
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Noriaki NAODA, Masaki KIMURA, Takayuki OKUBO
  • Patent number: 11969974
    Abstract: The present invention addresses the problem of providing a surface protection film for a flexible display with which films are not adhered to each other. As a solution, provided is the surface protection film for a flexible display that has a protection layer made of polyurethane as an outermost surface thereof, the polyurethane having a tan ? peak temperature of 20° C. or more.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: April 30, 2024
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Yutaka Kamada, Masahiro Yamaguchi
  • Publication number: 20240102534
    Abstract: A toothed belt includes: a belt body having a flat band-shaped back rubber portion and tooth rubber portions placed on an inner circumferential side of the back rubber portion, the back rubber portion and the tooth rubber portions being each composed of a thermoplastic elastomer composition; a cord containing carbon filaments; and a tooth portion covering material provided on an inner circumferential side of the belt body and covering the tooth rubber portions. An elastomer component of the thermoplastic elastomer composition is a TPAE or a TPC, a hardness of the thermoplastic elastomer composition forming the back rubber portion is not less than 25 and not greater than 70, a hardness of the thermoplastic elastomer composition forming the tooth rubber portions is not less than 40 and not greater than 70, and the hardness of the thermoplastic elastomer composition forming the back rubber portion is not greater than the hardness of the thermoplastic elastomer composition forming the tooth rubber portions.
    Type: Application
    Filed: April 26, 2022
    Publication date: March 28, 2024
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Katsuyoshi FUJIWARA, Yuji SEKIGUCHI
  • Patent number: 11906909
    Abstract: The purpose of the present invention is to provide a developing roller which is not prone to scumming in a nonprinting area. The solution is to provide a developing roller which has an elastic layer, a coat layer formed on the elastic layer, and end portion coat layers formed on outermost surfaces on two axial end portions, wherein the end portion coat layer contains a conductive material.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: February 20, 2024
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Taku Yamoto, Kimiya Goto, Hideki Norisada
  • Publication number: 20240017537
    Abstract: The present invention provides an optically clear adhesive sheet that prevents delay bubble generation and has a large thickness, a high adhesive strength to an adherend, a high capability to conform to the adherend, and excellent weather resistance; a laminate including the optically clear adhesive sheet; and a bonded structure including the optically clear adhesive sheet. The optically clear adhesive sheet includes, in the following order: a first surface-adhesive layer; an intermediate polyurethane layer; and a second surface-adhesive layer, the intermediate polyurethane layer containing a hindered amine-based light stabilizer, the optically clear adhesive sheet having a loss tangent at 85° C. of 0.25 or more and 0.6 or less, the intermediate polyurethane layer having a thickness of 100 ?m or greater and 2000 ?m or smaller.
    Type: Application
    Filed: November 10, 2021
    Publication date: January 18, 2024
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Mitsuru TERAOKA, Shun TAKAHAMA, Hisataka SUZUKI
  • Patent number: 11868062
    Abstract: The purpose of the present invention is to provide a developing roller which is not prone to scumming in a nonprinting area. The solution is to provide a developing roller which has an elastic layer, a coat layer formed on the elastic layer, and end portion coat layers formed on outermost surfaces on two axial end portions, wherein the end portion coat layer contains a conductive material.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: January 9, 2024
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Taku Yamoto, Kimiya Goto, Hideki Norisada
  • Patent number: 11835111
    Abstract: A power transmission belt includes a belt body made of rubber and a cord embedded in the belt body. The belt body has a portion having the cord embedded therein, and the portion is made of a rubber composition having a storage normal modulus at 25° C. in a grain direction of 80 MPa or more and the ratio of the storage normal modulus at 25° C. in the grain direction to a storage normal modulus at 25° C. in a cross-grain direction of 1.20 or more to 2.50 or less. The rubber composition is arranged such that the grain direction corresponds to a belt length direction and the cross-grain direction corresponds to a belt width direction.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: December 5, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Shogo Kobayashi, Ikuhito Doi, Hideyuki Kato
  • Publication number: 20230383122
    Abstract: Cover film has a base material layer and a surface layer chemically bonded to the base material layer, where the surface layer includes a polyurethane resin X1 containing urethane and urea units and a polyorganosiloxane group in the molecule, the polyurethane resin X1 is a reaction product of a non-yellowing-type isocyanate component B1 with an active hydrogen component A1 including a compound a1-1, the base material layer includes a polyurethane resin X2 having a urethane bond in the molecule, and the polyurethane resin X2 is a reaction product of a non-yellowing-type isocyanate component B2 with an active hydrogen component A2 which does not include the compound a1-1, and has a certain crosslinking point concentration and also has a certain elastic recovery rate.
    Type: Application
    Filed: May 31, 2023
    Publication date: November 30, 2023
    Applicants: LG DISPLAY CO., LTD., Sanyo Chemical Industries, Ltd., Bando Chemical Industries, Ltd.
    Inventors: Harumi OKUNO, Takayuki OTA, Masafumi SAWADA, Atsushi WAKATSUKI, Yutaka KAMADA
  • Patent number: 11819978
    Abstract: A grinding material includes a base sheet and a grinding layer overlaid on a front face side of the base sheet and including abrasive grains and a binder for the abrasive grains. The grinding layer includes the abrasive grains of a plurality of types. Of the abrasive grains of the plurality of types, provided that first abrasive grains have the largest average diameter and second abrasive grains have the second largest average diameter, the percentage of the average diameter of the second abrasive grains with respect to that of the first abrasive grains is 5-70%. The total content of the abrasive grains in the grinding layer is preferably 50-85% by volume. The content of the first abrasive grains in the grinding layer is preferably 1-25% by volume. The first abrasive grains are preferably diamond abrasive grains and the second abrasive grains are preferably alumina abrasive grains.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: November 21, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Daisuke Takagi, Tomoki Iwanaga, Kazuo Saito, Toshikazu Taura
  • Publication number: 20230332671
    Abstract: A power transmission belt includes a belt body made of an elastomer, and a cord made of carbon fibers and provided to be embedded in the belt body and to form a helical pattern having a pitch in the belt width direction. When the cord is viewed from a side orthogonal to its length direction, an angle ? of an outermost filament in the filament bundle of the carbon fibers forming the cord with respect to the length direction of the cord is 8° or more to 20° or less.
    Type: Application
    Filed: June 16, 2023
    Publication date: October 19, 2023
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Atsushi TAGA
  • Patent number: 11746242
    Abstract: A water-repellent structure includes: a base material; and a water-repellent layer located on a surface of the base material. The water-repellent layer contains water-repellent particles and filler particles having an average particle size that is 20 times or more as large as an average particle size of the water-repellent particles.
    Type: Grant
    Filed: August 5, 2022
    Date of Patent: September 5, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Jun Onishi, Hiroshi Sanda
  • Patent number: 11719309
    Abstract: A transmission system using a toothed belt includes a belt body made of elastomer and a core wire made of carbon fiber and provided so as to be embedded in the belt body and form a helix having a pitch in a belt width direction. The belt body includes a flat band portion having a horizontally long rectangular cross section and a plurality of tooth portions integrally provided on an inner peripheral side of the flat band portion. A belt tension T0.2 per belt width of 1 mm when a belt elongation rate is 0.2% is 70 N/mm or more, an amount of backlash between the toothed belt and a toothed pulley is 0.10 mm or more and less than 0.65 mm, a hardness of the belt body is 89° or more in JIS K 6253 Durometer Type A, and a surface dynamic friction coefficient is 1.5 or less.
    Type: Grant
    Filed: December 28, 2022
    Date of Patent: August 8, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Kazuyuki Tsubakino
  • Patent number: 11708879
    Abstract: A power transmission belt includes a belt body made of an elastomer, and a cord made of carbon fibers and provided to be embedded in the belt body and to form a helical pattern having a pitch in the belt width direction. When the cord is viewed from a side orthogonal to its length direction, an angle ? of an outermost filament in the filament bundle of the carbon fibers forming the cord with respect to the length direction of the cord is 8° or more to 20° or less.
    Type: Grant
    Filed: November 25, 2022
    Date of Patent: July 25, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Atsushi Taga
  • Publication number: 20230141466
    Abstract: A transmission system using a toothed belt includes a belt body made of elastomer and a core wire made of carbon fiber and provided so as to be embedded in the belt body and form a helix having a pitch in a belt width direction. The belt body includes a flat band portion having a horizontally long rectangular cross section and a plurality of tooth portions integrally provided on an inner peripheral side of the flat band portion. A belt tension T0.2 per belt width of 1 mm when a belt elongation rate is 0.2% is 70 N/mm or more, an amount of backlash between the toothed belt and a toothed pulley is 0.10 mm or more and less than 0.65 mm, a hardness of the belt body is 89° or more in JIS K 6253 Durometer Type A, and a surface dynamic friction coefficient is 1.5 or less.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 11, 2023
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Kazuyuki TSUBAKINO
  • Patent number: 11644082
    Abstract: A power transmission belt includes a belt body made of an elastomer, and a cord made of carbon fibers and embedded in the belt body. The belt tension T0.2 per 1 mm belt width at 0.2% of a belt extension rate is 70 N/mm or more. The belt tension T0.5 per 1 mm belt width at 0.5% of the belt extension rate is 220 N/mm or more. The ratio of the belt tension T0.2 to the belt tension T0.5 is 0.33 or more.
    Type: Grant
    Filed: November 25, 2022
    Date of Patent: May 9, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Kazuyuki Tsubakino
  • Patent number: 11643527
    Abstract: A power transmission belt includes a belt body at least portion of which is made of a rubber composition containing a rubber component, cellulose-based fine fibers, and cotton powder.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: May 9, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Shogo Kobayashi, Hideyuki Kato, Takafumi Masuda
  • Publication number: 20230088538
    Abstract: A power transmission belt includes a belt body made of an elastomer, and a cord made of carbon fibers and embedded in the belt body. The belt tension T0.2 per 1 mm belt width at 0.2% of a belt extension rate is 70 N/mm or more. The belt tension T0.5 per 1 mm belt width at 0.5% of the belt extension rate is 220 N/mm or more. The ratio of the belt tension T0.2 to the belt tension T0.5 is 0.33 or more.
    Type: Application
    Filed: November 25, 2022
    Publication date: March 23, 2023
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Kazuyuki TSUBAKINO
  • Publication number: 20230085893
    Abstract: A power transmission belt includes a belt body made of an elastomer, and a cord made of carbon fibers and provided to be embedded in the belt body and to form a helical pattern having a pitch in the belt width direction. When the cord is viewed from a side orthogonal to its length direction, an angle 0 of an outermost filament in the filament bundle of the carbon fibers forming the cord with respect to the length direction of the cord is 8° or more to 20° or less.
    Type: Application
    Filed: November 25, 2022
    Publication date: March 23, 2023
    Applicant: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventor: Atsushi TAGA
  • Patent number: 11566684
    Abstract: In a toothed belt including a toothed belt body and a reinforcing cloth, the toothed belt body includes a rubber composition and has a base part formed into a flat band shape and a plurality of rubber tooth parts, which are arranged integrally with one face of the base part and spaced apart from each other in a belt lengthwise direction. The reinforcing cloth is attached to the toothed belt body to cover a face, of the toothed belt body, with the rubber tooth parts. Each of the rubber tooth parts is covered with the reinforcing cloth in a corresponding one of cloth-covered tooth parts where a rate of a volume of the reinforcing cloth with respect to a volume of the cloth-covered tooth part is 60% or more.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: January 31, 2023
    Assignee: BANDO CHEMICAL INDUSTRIES, LTD.
    Inventors: Yoshitaka Meki, Atsushi Taga