Methods and apparatus for controlling airflow in a fiber extrusion system
    1.
    发明授权
    Methods and apparatus for controlling airflow in a fiber extrusion system 有权
    用于控制纤维挤出系统中气流的方法和装置

    公开(公告)号:US07037097B2

    公开(公告)日:2006-05-02

    申请号:US10849495

    申请日:2004-05-20

    IPC分类号: D01D5/092

    CPC分类号: D01D5/092 D01D13/02 D04H3/02

    摘要: An apparatus for controlling airflow in a fiber extrusion process includes a fiber flow region between an inlet through which extruded fibers are received and an outlet through which the extruded fibers are discharged and at least one surface providing a boundary between the fiber flow region and another region, wherein the surface includes apertures permitting air to flow between the fiber flow region and the other region to control airflow at the outlet of the fiber flow region. The apparatus can include a housing which contains at least one chamber, with the surface forming a boundary between the fiber flow region and the chamber, such that the apertures permit air to flow between the fiber flow region and at the chamber. In a spunbond process, the airflow control device receives drawn filaments exiting an aspirator and deposits the filaments onto a web-forming surface with reduced air disturbance.

    摘要翻译: 用于控制纤维挤出方法中的气流的装置包括在挤出的纤维被容纳的入口和挤出的纤维被排出的出口之间的纤维流动区域和至少一个提供纤维流动区域和另一区域之间的边界的表面 ,其中所述表面包括允许空气在所述纤维流动区域和所述另一区域之间流动的孔以控制所述纤维流动区域的出口处的气流。 该装置可以包括壳体,该壳体包含至少一个腔室,该表面在纤维流动区域和腔室之间形成边界,使得孔口允许空气在纤维流动区域和腔室之间流动。 在纺粘工艺中,气流控制装置接收离开抽吸器的拉伸长丝,并将细丝沉积在具有降低的空气干扰的幅材形成表面上。

    Methods of forming ultra-fine fibers and non-woven webs
    2.
    发明授权
    Methods of forming ultra-fine fibers and non-woven webs 有权
    形成超细纤维和无纺网的方法

    公开(公告)号:US07431869B2

    公开(公告)日:2008-10-07

    申请号:US10860565

    申请日:2004-06-04

    摘要: A nonwoven web product including ultra-fine fibers is formed utilizing a spunbond apparatus that forms multicomponent fibers by delivering first and second polymer components in a molten state from a spin pack to a spinneret, extruding multicomponent fibers including the first and second polymer components from the spinneret, attenuating the mulicomponent fibers in an aspirator, laying down the multicomponent fibers on an elongated forming surface disposed downstream from the aspirator to form a nonwoven web, and bonding portions of at least some of the fibers in the nonwoven web together to form a bonded, nonwoven web product. The multicomponent fibers can include separable segments such as islands-in-the-sea fibers, where certain separated segments become the ultra-fine fibers in the web product. In addition, carbon tubular fibers can be formed by extruding island-in-the-sea fibers including polyacrylonitrile or pitch sheath segments in the fibers, separating the segments of the fiber, and converting the polyacrylonitrile of pitch to carbon by a carbonization process.

    摘要翻译: 使用纺粘装置形成包含超细纤维的非织造网产品,该纺粘装置通过将熔融状态的第一和第二聚合物组分从纺丝组合物输送到喷丝头而形成多组分纤维,从包含第一和第二聚合物组分的多组分纤维 喷丝头,在抽吸器中减弱多组分纤维,将多组分纤维放置在设置在抽吸器下游的细长成形表面上以形成非织造纤维网,并将非织造纤维网中的至少一些纤维的部分粘合在一起,形成粘结的 ,非织造纤维网产品。 多组分纤维可以包括可分离的片段,例如海岛中的纤维,其中某些分离的片段变成网产品中的超细纤维。 此外,可以通过在纤维中挤出包括聚丙烯腈或沥青鞘段在内的海岛中纤维,分离纤维的段,并通过碳化处理将沥青的聚丙烯腈转化为碳来形成碳管状纤维。

    MULTI-COMPONENT FIBERS HAVING ENHANCED REVERSIBLE THERMAL PROPERTIES AND METHODS OF MANUFACTURING THEREOF
    3.
    发明申请
    MULTI-COMPONENT FIBERS HAVING ENHANCED REVERSIBLE THERMAL PROPERTIES AND METHODS OF MANUFACTURING THEREOF 审中-公开
    具有增强的可逆热性质的多组分纤维及其制造方法

    公开(公告)号:US20070161306A1

    公开(公告)日:2007-07-12

    申请号:US11562742

    申请日:2006-11-22

    IPC分类号: B32B5/02 D03D15/00 B32B3/26

    摘要: Multi-component fibers having enhanced reversible thermal properties and methods of manufacturing thereof are described. In one embodiment, a multi-component fiber includes a fiber body formed from a set of elongated members, and at least one of the set of elongated members includes a temperature regulating material having a latent heat of at least 40 J/g and a transition temperature in the range of 22° C. to 40° C. The temperature regulating material provides thermal regulation based on at least one of absorption and release of the latent heat at the transition temperature. The multi-component fiber can be formed via a melt spinning process or a solution spinning process and can be used or incorporated in various products where a thermal regulating property is desired. For example, the multi-component fiber can be used in textiles, apparel, footwear, medical products, containers and packagings, buildings, appliances, and other products.

    摘要翻译: 描述了具有增强的可逆热性质的多组分纤维及其制造方法。 在一个实施例中,多组分纤维包括由一组细长构件形成的纤维体,并且该组细长构件中的至少一个包括温度调节材料,其具有至少40J / g的潜热和至少40J / 温度在22℃至40℃的范围内。温度调节材料基于在转变温度下的潜热的吸收和释放中的至少一种提供热调节。 多组分纤维可以通过熔融纺丝法或溶液纺丝法形成,并且可以用于或并入需要热调节性能的各种产品中。 例如,多组分纤维可用于纺织品,服装,鞋类,医疗产品,容器和容器,建筑物,电器和其他产品中。

    Method and apparatus for production of meltblown nanofibers
    4.
    发明申请
    Method and apparatus for production of meltblown nanofibers 审中-公开
    用于生产熔喷纳米纤维的方法和装置

    公开(公告)号:US20080023888A1

    公开(公告)日:2008-01-31

    申请号:US11736399

    申请日:2007-04-17

    IPC分类号: B29C39/14

    摘要: A method and apparatus for producing polymeric nanofibers utilizes a meltblown spinneret die having spin holes formed by grooves in plate(s) surface(s) of plate(s) where polymer exits at the plate(s) edge(s). The grooves are smaller than 0.005″ wide×0.004″ deep and have an L/D at least as large as 20:1. Flow rates of polymer through the apparatus are very low, on the order of 0.01 ghm or less. The method/apparatus produces may also be viewed as including A meltblown fabric having fibers mostly less than 0.5 microns in diameter is produced.

    摘要翻译: 用于生产聚合物纳米纤维的方法和设备利用熔喷丝锥模头,该喷丝头模具具有由板的板表面中的凹槽形成的旋转孔,其中聚合物在板边缘处离开。 凹槽小于0.005“宽x0.44”深,L / D至少大于20:1。 通过该装置的聚合物的流速非常低,为0.01ghm或更小。 生产的方法/设备也可以被看作包括具有直径小于0.5微米的纤维的熔喷织物。

    Methods and apparatus for forming ultra-fine fibers and non-woven webs of ultra-fine spunbond fibers
    6.
    发明申请
    Methods and apparatus for forming ultra-fine fibers and non-woven webs of ultra-fine spunbond fibers 有权
    用于形成超细纤维和非织造纤维网的超细纺粘纤维的方法和设备

    公开(公告)号:US20050032450A1

    公开(公告)日:2005-02-10

    申请号:US10860565

    申请日:2004-06-04

    摘要: A nonwoven web product including ultra-fine fibers is formed utilizing a spunbond apparatus that forms multicomponent fibers by delivering first and second polymer components in a molten state from a spin pack to a spinneret, extruding multicomponent fibers including the first and second polymer components from the spinneret, attenuating the multicomponent fibers in an aspirator, laying down the multicomponent fibers on an elongated forming surface disposed downstream from the aspirator to form a nonwoven web, and bonding portions of at least some of the fibers in the nonwoven web together to form a bonded, nonwoven web product. The multicomponent fibers can include separable segments such as islands-in-the-sea fibers, where certain separated segments become the ultra-fine fibers in the web product. In addition, carbon tubular fibers can be formed by extruding islands-in-the-sea fibers including polyacrylonitrile or pitch sheath segments in the fibers, separating the segments of the fiber, and converting the polyacrylonitrile or pitch to carbon by a carbonization process.

    摘要翻译: 使用纺粘装置形成包含超细纤维的非织造网产品,该纺粘装置通过将熔融状态的第一和第二聚合物组分从纺丝组合物输送到喷丝头而形成多组分纤维,从包含第一和第二聚合物组分的多组分纤维 喷丝头,在抽吸器中减弱多组分纤维,将多组分纤维铺设在设置在抽吸器下游的细长成形表面上以形成非织造纤维网,并将非织造纤维网中的至少一些纤维的部分粘合在一起形成粘结的 ,非织造纤维网产品。 多组分纤维可以包括可分离的片段,例如海岛中的纤维,其中某些分离的片段变成网产品中的超细纤维。 此外,可以通过在纤维中挤出包括聚丙烯腈或沥青鞘部分在内的岛内海纤维,分离纤维的段,并通过碳化方法将聚丙烯腈或沥青转化成碳来形成碳管状纤维。

    Methods and apparatus for controlling airflow in a fiber extrusion system
    7.
    发明申请
    Methods and apparatus for controlling airflow in a fiber extrusion system 有权
    用于控制纤维挤出系统中气流的方法和装置

    公开(公告)号:US20050008728A1

    公开(公告)日:2005-01-13

    申请号:US10849495

    申请日:2004-05-20

    IPC分类号: D01D5/092 F24F20060101

    CPC分类号: D01D5/092 D01D13/02 D04H3/02

    摘要: An apparatus for controlling airflow in a fiber extrusion process includes a fiber flow region between an inlet through which extruded fibers are received and an outlet through which the extruded fibers are discharged and at least one surface providing a boundary between the fiber flow region and another region, wherein the surface includes apertures permitting air to flow between the fiber flow region and the other region to control airflow at the outlet of the fiber flow region. The apparatus can include a housing which contains at least one chamber, with the surface forming a boundary between the fiber flow region and the chamber, such that the apertures permit air to flow between the fiber flow region and at the chamber. In a spunbond process, the airflow control device receives drawn filaments exiting an aspirator and deposits the filaments onto a web-forming surface with reduced air disturbance.

    摘要翻译: 用于控制纤维挤出方法中的气流的装置包括在挤出的纤维被容纳的入口和挤出的纤维被排出的出口之间的纤维流动区域和至少一个提供纤维流动区域和另一区域之间的边界的表面 ,其中所述表面包括允许空气在所述纤维流动区域和所述另一区域之间流动的孔以控制所述纤维流动区域的出口处的气流。 该装置可以包括壳体,该壳体包含至少一个腔室,该表面在纤维流动区域和腔室之间形成边界,使得孔口允许空气在纤维流动区域和腔室之间流动。 在纺粘工艺中,气流控制装置接收离开抽吸器的拉伸长丝,并将细丝沉积在具有降低的空气干扰的幅材形成表面上。