Process for making and process for converting polyolefin fibres
    1.
    发明授权
    Process for making and process for converting polyolefin fibres 有权
    聚烯烃纤维的生产和加工工艺

    公开(公告)号:US07364678B2

    公开(公告)日:2008-04-29

    申请号:US10537899

    申请日:2003-12-09

    IPC分类号: D02G1/20

    摘要: The invention relates to a process for making a multi-filament polyethylene yarn via a gel-spinning process, Wherein a spin finish is applied at least once in an amount of 0.1-10 mass % based on the filament, to a filament that contains less than 50 mass % of solvent; the spin finish comprising at least 95 mass % of at least one volatile compound having a boiling point at 0.1 MPa pressure of from 30 to 250° C.; and the spin finish is subsequently removed by exposing the filament to a temperature of below the melting temperature of the filament. With this process a yarn is made that has a very low amount of residues on the surface of the fibres, without the need for a washing or extraction step, showing good mechanical properties, and very suited for e.g. biomedical applications. The invention further relates to a process for converting polyolefin fibres into a semi-finished or end-use product. The invention also concerns a polyethylene yarn and a semi-finished or end-use product obtainable by said processes, as well as to the use of thereof in biomedical applications.

    摘要翻译: 本发明涉及一种通过凝胶纺丝法制造复丝聚乙烯纱线的方法,其中纺丝整理剂以基于长丝的0.1-10质量%的量施加至少一次至包含较少的丝 超过50质量%的溶剂; 旋涂完成包含至少95质量%的沸点为0.1MPa压力为30至250℃的至少一种挥发性化合物; 然后通过将细丝暴露于低于丝的熔化温度的温度来除去旋涂。 通过该方法,在纤维表面上制备具有非常少量的残余物的纱线,而不需要洗涤或提取步骤,显示出良好的机械性能,并且非常适合于例如纤维。 生物医学应用。 本发明还涉及将聚烯烃纤维转变成半成品或最终用途产品的方法。 本发明还涉及可通过所述方法获得的聚乙烯纱线和半成品或最终用途产品,以及其在生物医学应用中的用途。

    Surgical soft tissue mesh
    5.
    发明授权
    Surgical soft tissue mesh 有权
    手术软组织网

    公开(公告)号:US07582576B2

    公开(公告)日:2009-09-01

    申请号:US10537895

    申请日:2003-12-11

    IPC分类号: D03D9/00

    摘要: The invention relates to a soft and flexible surgical soft tissue mesh comprising polyethylene yarns, wherein the polyethylene yarns have a tensile strength of more than 1.0 Gpa and consist of a polyethylene with a relative viscosity of more than 5 dl/g. A further aspect of the invention is a method of producing a soft and flexible surgical soft tissue mesh comprising polyethylene yarns, wherein yarns are applied that comprise filaments made by: a) spinning at least one filament from a solution of polyethylene with a relative viscosity of more than 5 dl/g in a solvent; b) cooling the filament obtained to form a gel filament; c) removing at least partly the solvent from the gel filament; and d) drawing the filament in at least one drawing step before, during or after removing solvent.

    摘要翻译: 本发明涉及包含聚乙烯纱线的柔软和柔性的外科软组织网,其中聚乙烯纱线具有大于1.0Gpa的拉伸强度并且由相对粘度大于5dl / g的聚乙烯组成。 本发明的另一方面是一种生产包含聚乙烯纱线的软和柔性外科软组织网的方法,其中施加纱线,其包括通过以下制备的长丝:a)从聚乙烯溶液中纺出至少一根细丝,相对粘度为 在溶剂中大于5dl / g; b)冷却获得的细丝以形成凝胶丝; c)至少部分地从凝胶丝中除去溶剂; 以及d)在除去溶剂之前,期间或之后,在至少一个拉伸步骤中拉丝。