Patents Assigned to Bando Chemical Industries, Ltd.
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Publication number: 20240102534Abstract: 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: ApplicationFiled: April 26, 2022Publication date: March 28, 2024Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Katsuyoshi FUJIWARA, Yuji SEKIGUCHI
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Patent number: 11906909Abstract: 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: GrantFiled: June 30, 2020Date of Patent: February 20, 2024Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Taku Yamoto, Kimiya Goto, Hideki Norisada
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Publication number: 20240017537Abstract: 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: ApplicationFiled: November 10, 2021Publication date: January 18, 2024Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Mitsuru TERAOKA, Shun TAKAHAMA, Hisataka SUZUKI
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Patent number: 11868062Abstract: 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: GrantFiled: June 30, 2020Date of Patent: January 9, 2024Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Taku Yamoto, Kimiya Goto, Hideki Norisada
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Patent number: 11835111Abstract: 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: GrantFiled: December 6, 2021Date of Patent: December 5, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Shogo Kobayashi, Ikuhito Doi, Hideyuki Kato
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Publication number: 20230383122Abstract: 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: ApplicationFiled: May 31, 2023Publication date: November 30, 2023Applicants: LG DISPLAY CO., LTD., Sanyo Chemical Industries, Ltd., Bando Chemical Industries, Ltd.Inventors: Harumi OKUNO, Takayuki OTA, Masafumi SAWADA, Atsushi WAKATSUKI, Yutaka KAMADA
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Patent number: 11819978Abstract: 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: GrantFiled: January 19, 2017Date of Patent: November 21, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Daisuke Takagi, Tomoki Iwanaga, Kazuo Saito, Toshikazu Taura
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Publication number: 20230332671Abstract: 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: ApplicationFiled: June 16, 2023Publication date: October 19, 2023Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Atsushi TAGA
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Patent number: 11746242Abstract: 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: GrantFiled: August 5, 2022Date of Patent: September 5, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Jun Onishi, Hiroshi Sanda
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Patent number: 11719309Abstract: 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: GrantFiled: December 28, 2022Date of Patent: August 8, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Kazuyuki Tsubakino
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Patent number: 11708879Abstract: 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: GrantFiled: November 25, 2022Date of Patent: July 25, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Atsushi Taga
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Publication number: 20230141466Abstract: 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: ApplicationFiled: December 28, 2022Publication date: May 11, 2023Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Kazuyuki TSUBAKINO
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Patent number: 11643527Abstract: 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: GrantFiled: December 6, 2021Date of Patent: May 9, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Shogo Kobayashi, Hideyuki Kato, Takafumi Masuda
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Patent number: 11644082Abstract: 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: GrantFiled: November 25, 2022Date of Patent: May 9, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Kazuyuki Tsubakino
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Publication number: 20230088538Abstract: 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: ApplicationFiled: November 25, 2022Publication date: March 23, 2023Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Kazuyuki TSUBAKINO
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Publication number: 20230085893Abstract: 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: ApplicationFiled: November 25, 2022Publication date: March 23, 2023Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventor: Atsushi TAGA
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Patent number: 11566684Abstract: 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: GrantFiled: April 17, 2020Date of Patent: January 31, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Yoshitaka Meki, Atsushi Taga
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Patent number: 11566124Abstract: A crosslinked rubber composition contains a rubber component and para-aramid short fibers having a filament fineness of 2.5 dtex or more and dispersed in the rubber component.Type: GrantFiled: September 21, 2020Date of Patent: January 31, 2023Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Takayuki Okubo, Masashi Kitatsuji, Takuya Mori, Taiichi Okada
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Patent number: 11530337Abstract: The present invention provides an optically clear adhesive sheet using a heat-curable polyurethane composition, wherein the optically clear adhesive sheet can, when bonded to an adherend such as a glass plate, prevent the occurrence of air bubbles even at high temperature and normal humidity and maintain a stable bonded interface. The optically clear adhesive sheet of the present invention is an optically clear adhesive sheet containing: a cured product of a heat-curable polyurethane composition, the heat-curable polyurethane composition containing a polyol component and a polyisocyanate component, the polyol component having an olefin skeleton, the polyisocyanate component containing an acyclic aliphatic polyisocyanate and/or an alicyclic polyisocyanate.Type: GrantFiled: September 26, 2016Date of Patent: December 20, 2022Assignee: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Yuki Hosokawa, Jun Onishi, Soichiro Nakane
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Publication number: 20220372303Abstract: 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: ApplicationFiled: August 5, 2022Publication date: November 24, 2022Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Jun ONISHI, Hiroshi SANDA