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101 条记录 (耗时 0.016 秒)

    Hydroentanglement of continuous polymer filaments
    13.
    发明授权
    Hydroentanglement of continuous polymer filaments 有权
    连续聚合物长丝的水刺

    公开(公告)号：US06903034B1

    公开(公告)日：2005-06-07

    申请号：US09475544

    申请日：1999-12-30

    申请人： Michael Putnam ,  Richard Ferencz ,  Marlene Storzer ,  Jian Weng

    发明人： Michael Putnam ,  Richard Ferencz ,  Marlene Storzer ,  Jian Weng

    IPC分类号： D04H3/10 ,  D04H13/00 ,  D04H1/46 ,  D04H3/16 ,  D04H5/02

    CPC分类号： D04H3/11 ,  Y10S428/903 ,  Y10T428/249922 ,  Y10T442/2238 ,  Y10T442/227 ,  Y10T442/2484 ,  Y10T442/2525 ,  Y10T442/633 ,  Y10T442/659 ,  Y10T442/66 ,  Y10T442/663 ,  Y10T442/668 ,  Y10T442/671 ,  Y10T442/681 ,  Y10T442/689 ,  Y10T442/697

    摘要： A nonwoven fabric comprises continuous polymer filaments of 0.5 to 3 denier that have been hydroentangled in a complex matrix for interconnecting filament loops, and that is otherwise substantially free of knotting, or of otherwise wrapping about one another. A process for making a nonwoven fabric comprises continuously extruding polymer filaments of 0.5 to 3 denier onto a moving support, pre-entangling the filaments with water jets, and entangling the filaments with a second set of water jets on a three-dimensional image transfer device. An apparatus for making a nonwoven fabric comprises means for continuously extruding substantially endless polymer filaments of 0.5 to 3 denier onto a moving support to form an unbonded web, a pre-entangling station for entangling the web with a plurality of water jets, and a plurality of water jets for final entanglement of the filament web on a three-dimensional image transfer device. In another aspect of the present invention, plural precursor webs, each comprising polymeric filaments, can be employed to form a laminated nonwoven fabric.

    摘要翻译： 非织造织物包含0.5至3旦尼尔的连续聚合物长丝，其已经被水解缠绕在用于互连丝线圈的复合基质中，并且否则基本上不会打结或彼此缠绕。 制造无纺布的方法包括将0.5至3旦尼尔的聚合物长丝连续挤出到移动的支撑件上，用水射流预缠绕长丝，并将第二组水射流缠绕在三维图像转印装置上 。 一种用于制造无纺织物的装置包括用于将0.5至3旦尼尔的基本上环状的聚合物长丝连续挤出到移动的支撑件上以形成未粘合的网的装置，用于与多个水射流缠绕网的预缠结站，以及多个 的水射流，用于三维图像转印装置上的丝网的最终缠结。 在本发明的另一方面，可以使用多个包含聚合物长丝的前体纤维网，以形成层压无纺织物。

    EXPANSIBLE WOVEN FABRIC
    17.
    发明申请
    EXPANSIBLE WOVEN FABRIC 无效
    可扩展织物

    公开(公告)号：US20020034902A1

    公开(公告)日：2002-03-21

    申请号：US09214807

    申请日：1999-01-12

    发明人： MICHAEL GERVASE LITTON

    IPC分类号： B32B005/02 ,  B32B027/04 ,  B32B027/12

    CPC分类号： D03D15/08 ,  A61F2/06 ,  D02G3/406 ,  D10B2321/042 ,  D10B2331/04 ,  Y10T442/227 ,  Y10T442/2287 ,  Y10T442/232 ,  Y10T442/3008

    摘要： There is provided a woven fabric for use in endovascular grafting, said fabric being biostable, composed of substantially non-elastomeric yarn, and expansible in at least one yarn direction, preferably the weft direction. Expansibility of the fabric is achieved by introducing non-linearity into a yarn (such as polyester or polytetrafluoroethylene) used in weaving the fabric. The non-linear yarn is maintained in that form by an agent which may itself be a yarn. Following fabric formation resilience is advantageously imparted to the non-linear yarn prior to release of the agent. In a preferred embodiment the yarn is polyester and is crimped or twisted around the agent which is a PVA yarn. After weaving, the fabric is washed in hot water to heat-set the water insoluble yarn in its non-linear form and to selectively dissolve the agent. An endovascular graft comprising the fabric of the invention is also described.

    摘要翻译： 提供了用于血管内移植的机织织物，所述织物是生物稳定的，由基本上非弹性纱线组成，并且可在至少一个纱线方向，优选纬向方向上膨胀。 通过将非线性引入用于编织织物的纱线（例如聚酯或聚四氟乙烯）来实现织物的可扩展性。 非线性纱线由本身可以是纱线的试剂保持为该形式。 在织物释放之前，织物形成弹性有利地赋予非线性纱线。 在一个优选的实施方案中，纱线是聚酯，并且在作为PVA纱线的试剂周围卷曲或扭曲。 织造后，将织物在热水中洗涤，以非线性形式对水不溶性纱线进行热固化，并选择性地溶解试剂。 还描述了包含本发明织物的血管内移植物。