Nonwoven fabric and fibers
    2.
    发明申请
    Nonwoven fabric and fibers 审中-公开
    无纺布和纤维

    公开(公告)号:US20070173162A1

    公开(公告)日:2007-07-26

    申请号:US11578760

    申请日:2005-04-08

    IPC分类号: C08L23/04 D04H13/00

    摘要: The present invention relates to nonwoven webs or fabrics. In particular, the present invention relates to nonwoven webs having superior abrasion resistance and excellent softness characteristics. The nonwoven materials comprise fibers made from of a polymer blend of isotactic polypropylene, reactor grade propylene based elastomers or plastomers, and optionally, a homoge-neously branched ethylene/alpha olefin plastomer or elastomer. The isotactic polypropylene can be homopolymer polypropylene, and random copolymers of propylene and one or more alpha-olefins. The reactor grade propylene based elastomers or plastomers plastomer have a molecular weight distribution of less than about 3.5, and a heat of fusion less than about 90 joules/gm. In particular, the reactor grade propylene based elastomers or plastomers contains from about 3 to about 15 percent by weight of units derived from an ethylene, and a melt flow rate of from about 2 to about 200 grams/10 minutes. The present invention also relates to cold drawn textured fibers comprising of a polymer blend of isotactic polypropylene and reactor grade propylene based elastomers or plastomers.

    摘要翻译: 本发明涉及非织造纤维网或织物。 特别地,本发明涉及非织造纤维网,其具有优异的耐磨性和优异的柔软性。 非织造材料包括由全同立构聚丙烯,反应器级丙烯基弹性体或塑性体的聚合物共混物和任选的均相支化的乙烯/α-烯烃塑性体或弹性体制成的纤维。 全同立构聚丙烯可以是均聚聚丙烯,丙烯与一种或多种α-烯烃的无规共聚物。 反应器级丙烯基弹性体或塑性体塑性体的分子量分布小于约3.5,熔融热小于约90焦耳/克。 特别地,反应器级丙烯基弹性体或塑性体含有约3至约15重量%的衍生自乙烯的单元,熔体流动速率为约2至约200克/ 10分钟。 本发明还涉及包含全同立构聚丙烯和反应器级丙烯基弹性体或塑性体的聚合物共混物的冷拉纹理纤维。

    Surface modified bi-component polymeric fiber
    3.
    发明申请
    Surface modified bi-component polymeric fiber 审中-公开
    表面改性双组分聚合物纤维

    公开(公告)号:US20070122614A1

    公开(公告)日:2007-05-31

    申请号:US11290145

    申请日:2005-11-30

    IPC分类号: D02G3/36 D02G3/02 D02G3/22

    摘要: The present invention provides a bicomponent fiber having increased surface roughness. The fiber includes a first polymer and a composite, wherein the composite forms a layer which forms at least a portion of the fiber's surface. The composite is formed by a second polymer and a filler, where an average particle size of the filler can be greater than a thickness of the layer formed by the composite. The fibers can have a round, oval, trilobal, triangular, dog-boned, flat or hollow shape and a symmetrical or asymmetrical sheath/core or side-by-side configuration. When the fiber has a sheath/core configuration, the composite can form the sheath, and the average particle size of the filler can be greater than the thickness of the sheath.

    摘要翻译: 本发明提供了具有增加的表面粗糙度的双组分纤维。 纤维包括第一聚合物和复合材料,其中复合物形成形成纤维表面的至少一部分的层。 复合材料由第二聚合物和填料形成,其中填料的平均粒径可以大于由复合材料形成的层的厚度。 纤维可以具有圆形,椭圆形,三叶形,三角形,狗骨形,扁平或中空形状和对称或不对称的护套/芯或并排配置。 当纤维具有鞘/芯构造时,复合材料可以形成护套,并且填料的平均粒径可以大于护套的厚度。