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    Polybenzazole fiber rope
    292.
    发明专利
    Polybenzazole fiber rope 审中-公开
    聚苯并唑纤维绳

    公开(公告)号：JP2008063693A

    公开(公告)日：2008-03-21

    申请号：JP2006242645

    申请日：2006-09-07

    Applicant: Toyobo Co Ltd ,  東洋紡績株式会社

    Inventor： KITAGAWA SUSUMU

    IPC: D07B1/02 ,  D01F6/74 ,  D06M13/224

    CPC classification number: D07B1/025 ,  D07B2201/2002 ,  D07B2205/2096 ,  D07B2801/10

    Abstract: PROBLEM TO BE SOLVED: To provide a polybenzazole fiber rope having high strength and high elastic modulus, which has water resistance and abrasion resistance.
    SOLUTION: The polybenzazole fiber rope uses polybenzazole fibers having a projection rate (%) mentioned below of at least 75% in each of the cross sections of monofilament fibers in a polybenzazole multifilament. Wherein, the projection rate (%) = (the number of fibers having projecting cross section/the number of component multifilaments) ×100. Further, the cross section of the monofilament can be distinguished between two layers of a sheath layer and core layer on being observed by an optical microscope, and the ratio R (%) of the mean diameter r
    2 of the core layer to the fiber cross sectional diameter r
    1 is ≤90%.
    COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 要解决的问题：提供具有耐水性和耐磨性的高强度和高弹性模量的聚吲哚纤维绳。 解决方案：聚吲哚纤维绳索使用聚吲哚复丝中的单丝纤维的每个横截面中具有下述投影率（％）至少75％的聚吲哚纤维。 其中，投影率（％）=（具有突出截面的纤维的数量/构成复丝的数量）×100。 此外，通过光学显微镜观察，可以将单丝的横截面区分为鞘层和芯层的两层，平均直径r 2 的比率R（％） 芯层与纤维横截面直径r 1 ≤90％。 版权所有（C）2008，JPO＆INPIT

    Pneumatic radial tire
    293.
    发明专利
    Pneumatic radial tire 审中-公开

    公开(公告)号：JP2004058707A

    公开(公告)日：2004-02-26

    申请号：JP2002215837

    申请日：2002-07-24

    Applicant: Toyo Tire & Rubber Co Ltd ,  東洋ゴム工業株式会社

    Inventor： AZUMA KOJI

    IPC: B60C9/00 ,  B60C9/20

    CPC classification number: D07B1/0653 ,  D07B2201/2002 ,  D07B2201/2003 ,  D07B2201/2029 ,  D07B2401/208 ,  D07B2801/14

    Abstract: PROBLEM TO BE SOLVED: To make the shape stability in the of a steel cord securable and improve the durability of a pneumatic radial tire by improving the permeability of rubber into the steel cord by employing one process-strand of a low production cost in the pneumatic radial tire in which the steel cord is used for reinforcing a belt layer. SOLUTION: Four to nine sheath filaments 2 are stranded around a core filament 1 with a laterally long cross section. The core filament 1 is corrugated in small diameter and large diameter directions viewed from the cross section of the core filament 1, and is set so that the corrugation ratios (a dimension of the cross section of the filament / the outer diameter of a corrugated section) in the small diameter direction and the large diameter direction become not less than 1.5 to less than 2.0. The aspect ratio of the cross section of the core filament 1 is set to 0.70 to 0.90, and the corrugation pitch of the core filament 1 in the small and large diameter directions is set smaller than that of the strand of the sheath filament 2. COPYRIGHT: (C)2004,JPO

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