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    • 31. 发明专利
    • Electroconductive roller
    • 电动滚筒
    • JP2008070672A
    • 2008-03-27
    • JP2006250179
    • 2006-09-15
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • MINAKOSHI AKIRATAJIMA HIROSHI
    • G03G15/16F16C13/00G03G15/02G03G15/08
    • C08L23/0869C08L23/10C08L23/16C08L2666/04
    • PROBLEM TO BE SOLVED: To provide an electroconductive roller keeping a low hardness even under a low temperature environment, having both good moldability and recycling property and obtaining sufficiently low electrical resistance even when only a small amount of salt is added. SOLUTION: The electroconductive roller is formed by a mixture of a dynamically cross-linked thermoplastic elastomer composition made electroconductive by blending ethyleneoxide-propylene oxide-allyl glycidylether copolymer and salt with anion which has fluoro group and sulfonyl group to thermoplastic elastomer and an elastomer composition which is dispersed in the mixture of thermoplastic resin by dynamically linking rubber component containing at least one type of diolefin system rubber or ethylene-propylene-diolefin rubber with a microcapsule with an outer shell made of acrylic group and has a Shore A hardness in JIS K6253 of ≤40 at 23°C. COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:即使在低温环境下也能保持低硬度的导电辊,具有良好的成型性和再循环性,并且即使仅添加少量盐也能获得足够低的电阻。 解决方案:导电辊由通过将环氧乙烷 - 环氧丙烷 - 烯丙基缩水甘油醚共聚物和盐与具有氟基和磺酰基的阴离子共混而制成导电的动态交联的热塑性弹性体组合物与热塑性弹性体的混合物形成, 弹性体组合物,其通过将含有至少一种类型的二烯体系橡胶或乙烯 - 丙烯 - 二烯烃橡胶的橡胶组分与具有由丙烯酸基团制成的外壳的微胶囊动态连接而分散在热塑性树脂的混合物中,并且具有肖氏A硬度 JIS K6253在23℃下≤40。 版权所有(C)2008,JPO&INPIT
    • 32. 发明专利
    • Printing blanket
    • 印花布
    • JP2006218752A
    • 2006-08-24
    • JP2005034530
    • 2005-02-10
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • TAJIMA HIROSHI
    • B41N10/04
    • PROBLEM TO BE SOLVED: To povide a printing blanket, in which both the inking properties of ink or crushing of ink and sheet separating properties are reconciled.
      SOLUTION: The surface rubber layer of the printing blanket is made of a rubber composition, which includes acrylonitrile-budadiene rubber, a vulcanizer and zinc carbonate, preferably no zinc oxide, under the condition that the compounding amount of the zinc carbonate is 1-10 pts.wt. to 100 pts.wt. of the rubber component including acrylonitrile-butadiene rubber, resulting in suppressing the increase of hardness under the condition that the loss tangent (tanδ) of the surface rubber layer contributing to sheet separation is kept smaller and consequently both the excellent sheet separating properties and the excellent inking properties of the ink can be reconciled.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供墨水的着墨性能,墨水粉碎和片材分离性能均一致的印刷橡皮布。 解决方案:印刷橡皮布的表面橡胶层由橡胶组合物制成,其包括丙烯腈 - 共二丁苯橡胶,硫化剂和碳酸锌,优选不含氧化锌,条件是碳酸锌的配混量为 1-10磅 到100磅 的橡胶组分,包括丙烯腈 - 丁二烯橡胶,导致在有助于片材分离的表面橡胶层的损耗角正切(tanδ)更小的条件下抑制硬度增加,从而优异的片材分离性能和优异的 油墨的着墨性能可以调和。 版权所有(C)2006,JPO&NCIPI
    • 33. 发明专利
    • Offset printing blanket
    • 偏移印刷布
    • JP2004209927A
    • 2004-07-29
    • JP2003002481
    • 2003-01-08
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • TAJIMA HIROSHIOKUBO HIROMASA
    • B41N10/04
    • PROBLEM TO BE SOLVED: To provide a blanket for offset printing which is excellent in any of paper detachability, durability, ink transferability, etc. and particularly suitable for high-speed printing.
      SOLUTION: The offset printing blanket 10 comprises a substrate layer 12 and a surface printing layer 11 laid on the substrate layer. The surface printing layer is formed of a vulcanized rubber composition containing a rubber material of 100 pts.wt., a zinc oxide of 7-20 pts.wt. and a plasticizer of 10-40 pts.wt., preferably 12-40 pts.wt. As for the plasticizer, an adipic acid ester is particularly preferable.
      COPYRIGHT: (C)2004,JPO&NCIPI
    • 要解决的问题:提供一种在纸张可拆卸性,耐久性,油墨转印性等方面优异且特别适用于高速印刷的胶版印刷用橡皮布。 胶版印刷橡皮布10包括基材层12和铺设在基材层上的表面印刷层11。 表面印刷层由含有100重量份的橡胶材料,7-20重量份的氧化锌的硫化橡胶组合物形成。 和10-40重量份,优选12-40重量份的增塑剂。 对于增塑剂,特别优选己二酸酯。 版权所有(C)2004,JPO&NCIPI
    • 34. 发明专利
    • PRINTING RUBBER ROLLER AND ITS MANUFACTURING METHOD
    • JP2003154631A
    • 2003-05-27
    • JP2001356200
    • 2001-11-21
    • SUMITOMO RUBBER IND
    • TOMONO SEIJITAJIMA HIROSHIKAMATA TOSHIO
    • B41F31/14
    • PROBLEM TO BE SOLVED: To provide a rubber roller in which the frequency of a printing pressure regulation is small even in the continuous operation of printing and a printing performance is preferably maintained in the roller used for an inking mechanism for a printer. SOLUTION: The rubber roller is formed by using a vulcanized rubber composition in which tanδ when a dynamic change stress (a distance between chucks: 20 mm, at 40 deg.C, initial strain: 2 mm, an amplitude: 50 mm and a frequency: 10 Hz) is applied, is 0.17 or less. The roller is preferably regulated to have a volume change ratio ΔV to the ink of ±15% or less, and a rubber hardness to 40 to 70 IRHD. Since the roller reduces the frequency of a printing pressure regulation such as to regulate a nip width even by providing for printing in a continuous operation, its printing operability is improved. The printing rubber roller is manufactured by selecting the types and blending amounts of a rubber material and a blending drug with the ΔV and the rubber hardness as indexes so that the tanδ value is obtained in the case of preparing the vulcanized rubber composition.
    • 40. 发明专利
    • PIPING JOINT
    • JPH11182760A
    • 1999-07-06
    • JP35049097
    • 1997-12-19
    • SUMITOMO RUBBER IND
    • TAJIMA HIROSHI
    • E02D29/12C08J5/00C08L9/00C08L23/00F16L25/00
    • PROBLEM TO BE SOLVED: To provide a piping joint having low compressive permanent deformation and high tensile strength and tearing strength and fastened to piping with excellent airtightness over a long period of time without deterioration after being buried underground. SOLUTION: An elastomer composition containing thermoplastic resin A containing >=50 wt.% of a polyolefinic thermoplastic resin and rubber B containing 250 wt.% of diene rubber at the weight ratio (A:B) of (20:80)-(50:50) in the state of the rubber B dispersed in a dynamically cross-linked state inside the thermoplastic resin A is formed to provide a first cylinder part 3A of large diameter, a second cylinder part 3B of small diameter, and a connecting part 3C connecting the first cylinder part 3A and second cylinder part 3B by an inclined wall. Mounting parts 4 of fastening bonds for fixing the inner peripheral surfaces of the cylinder parts to the outer peripheral surface of a piping end part are formed at the outer peripheral surfaces of he first and second cylinder parts, and at least one or more protruding parts 5 are formed in the positions, opposed to the mounting parts of the fastening bands, of the inner peripheral surfaces of the first and second cylinder parts.