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    Polyethylene heat shrinkable tube
    61.
    发明申请
    Polyethylene heat shrinkable tube 失效
    聚乙烯热收缩管

    公开(公告)号：US20030026926A1

    公开(公告)日：2003-02-06

    申请号：US10196294

    申请日：2002-07-17

    申请人： Sumitomo Electric Fine Polymer, Inc.

    发明人： Koji Muto ,  Taro Fujita ,  Shinya Nishikawa ,  Hiroshi Hayami

    IPC分类号： B32B001/08

    CPC分类号： B29C61/003 ,  B29C61/08 ,  B29K2023/06 ,  H01B3/441 ,  Y10T428/1328 ,  Y10T428/1331 ,  Y10T428/139 ,  Y10T428/1397

    摘要： The present invention improves the concentricity after expansion process of a heat shrinkable tube which is required to have a thin wall and hardness, and further aims to obtain elongation of 100% or more in a heat aging test, copper stability test, and heat shock test. The heat shrinkable tube satisfying such aim uses a medium- or high-density polyethylene that has a molecular weight distribution (Mw/Mn) of 30 to 55, an MFR of 0.05 to 0.2, and a specific gravity of 0.94 to 0.96. A medium- or high-density polyethylene obtained by combining an ethylene-vinyl acetate copolymer, ethylene-ethylacrylate copolymer, ethylene-methylacrylate copolymer, and ethylene-ethylmethacrylate copolymer may be used. More preferably, for an antioxidant, phenol-based and sulfur-based antioxidants are used together and zinc oxide is added.

    摘要翻译： 本发明提高了需要具有薄壁和硬度的热收缩管的膨胀过程之后的同心度，并且还旨在在热老化试验，铜稳定性试验和热冲击试验中获得100％以上的伸长率 。 满足该目的的热收缩管使用分子量分布（Mw / Mn）为30〜55，MFR为0.05〜0.2，比重为0.94〜0.96的中密度或高密度聚乙烯。 可以使用通过组合乙烯 - 乙酸乙烯酯共聚物，乙烯 - 丙烯酸乙酯共聚物，乙烯 - 丙烯酸甲酯共​​聚物和乙烯 - 甲基丙烯酸乙酯共聚物而获得的中等或高密度聚乙烯。 更优选地，对于抗氧化剂，苯酚基和硫基抗氧化剂一起使用并加入氧化锌。

    VALVE MEMBER
    62.
    发明公开
    VALVE MEMBER 审中-公开

    公开(公告)号：US20230220922A1

    公开(公告)日：2023-07-13

    申请号：US18009730

    申请日：2021-03-16

    申请人： SUMITOMO ELECTRIC FINE POLYMER, INC.

    发明人： Masato BABA

    IPC分类号： F16K25/00 ,  C08L27/18

    CPC分类号： F16K25/005 ,  C08L27/18 ,  C08L2312/02

    摘要： The valve member according to one embodiment of the present disclosure is a resin formed product having a crosslinked ethylene-tetrafluoroethylene copolymer as a main component, and having a crosslinking density of 85.0 mol/m3 or more calculated from a storage modulus at 300° C.

    METHOD FOR MANUFACTURING HOLLOW FIBER MEMBRANE MODULE, AND HOLLOW FIBER MEMBRANE MODULE
    63.
    发明申请
    METHOD FOR MANUFACTURING HOLLOW FIBER MEMBRANE MODULE, AND HOLLOW FIBER MEMBRANE MODULE 有权

    公开(公告)号：US20230025394A1

    公开(公告)日：2023-01-26

    申请号：US17756933

    申请日：2020-08-17

    申请人： SUMITOMO ELECTRIC FINE POLYMER, INC.

    发明人： Fumihiro HAYASHI ,  Yasuhiko MUROYA ,  Takamasa HASHIMOTO ,  Yoshimasa SUZUKI

    IPC分类号： B01D63/02

    摘要： A method for manufacturing a hollow fiber membrane module, the hollow fiber membrane module including: a hollow fiber membrane bundle including a plurality of hollow fiber membranes; a housing configured to contain the hollow fiber membrane bundle; and a potting part in which a potting agent is added between an outer surface of the hollow fiber membranes and an inner surface of the housing at both end regions or at one end region of the hollow fiber membrane bundle, wherein the method including: providing a sheet-shaped spacer in a space between the hollow fiber membranes at the both end regions or at the one end region of the hollow fiber membrane bundle; and adding a potting agent between the outer surface of the hollow fiber membranes and the inner surface of the housing at the both end regions or at the one end region of the hollow fiber membrane bundle such that the provided spacer is embedded, wherein the potting agent includes resin, rubber, or elastomer, as a main ingredient, and wherein the spacer is a net, a non-woven fabric, a porous sheet, or a film.