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    FLASH SPINNING PROCESS
    1.
    发明申请
    FLASH SPINNING PROCESS 有权

    公开(公告)号：US20220145497A1

    公开(公告)日：2022-05-12

    申请号：US17581233

    申请日：2022-01-21

    申请人： DUPONT SAFETY & CONSTRUCTION, INC.

    发明人： CORNEILLE SCHMITZ ,  JAN VAN MEERVELD ,  OREST SKOPLYAK ,  SERGE REBOUILLAT

    IPC分类号： D01F6/06 ,  D01D5/11 ,  D01D1/02 ,  D01D11/00 ,  D01F1/10

    摘要： A process for the preparation of plexifilamentary film-fibril strands of polymer. The process includes the steps of generating a spin fluid containing (a) 5 to 30 wt. % containing one or more polymer types, (b) a primary spin agent selected from the group consisting of dichloromethane, cis-1,2-dichloroethylene and trans-1,2-dichloroethylene, and (c) a co-spin agent comprising 1H,6H-perfluorohexane or 1H-perfluorohexane or 1H-perfluoroheptane. The spin fluid is flash-spun at a pressure that is greater than the autogenous pressure of the spin fluid into a region of lower pressure to form plexifilamentary film-fibril strands of the polymer. The co-spin agent is present in the spin fluid in an amount sufficient to form an azeotrope-like composition with the primary spin agent in the presence of the one or more polymer types. The polymer may be selected from the group consisting of high density polyethylene, polypropylene, polybutene-1, polymethylpentene, polyvinylidene fluoride, poly (ethylene tetrafluoroethylene), and blends of the foregoing.

    Flash-spinning process
    5.
    发明授权
    Flash-spinning process 失效
    闪纺过程

    公开(公告)号：US5874036A

    公开(公告)日：1999-02-23

    申请号：US902645

    申请日：1997-07-30

    申请人： Hyunkook Shin ,  Roger Keith Siemionko

    发明人： Hyunkook Shin ,  Roger Keith Siemionko

    IPC分类号： D01D5/11 ,  D01F6/04 ,  D01F6/06

    CPC分类号： D01D5/11 ,  D01F6/04 ,  D01F6/06

    摘要： A spin solution of a polyolefin dissolved in a primary solvent selected from the group consisting of methylene chloride and dichloroethylene, and a cyclic partially fluorinated hydrocarbon co-solvent, and a process for producing plexifilamentary polyolefin products by flash-spinning the spin solution.

    摘要翻译： 将溶解在选自二氯甲烷和二氯乙烯的一次溶剂中的聚烯烃的旋转溶液和环状部分氟化的烃助溶剂，以及通过旋转旋转溶液来生产聚烯烃产品的方法。

    Flash spinning process
    7.
    发明授权
    Flash spinning process 失效
    闪纺工艺

    公开(公告)号：US5672307A

    公开(公告)日：1997-09-30

    申请号：US612714

    申请日：1996-03-08

    申请人： Hyunkook Shin ,  Roger Keith Siemionko

    发明人： Hyunkook Shin ,  Roger Keith Siemionko

    IPC分类号： D01D5/11 ,  D01F6/04 ,  D01F6/06

    CPC分类号： D01F6/04 ,  D01D5/11 ,  D01F6/06

    摘要： A process for producing plexifilamentary products by spinning from a solution of a primary solvent selected from the group consisting of methylene chloride and 1,2-dichloroethylene and a co-solvent, and a spin solution of a polyolefin dissolved in a primary solvent selected from the group consisting of methylene chloride, and 1,2-dichloroethylene, and a co-solvent.

    摘要翻译： 通过从选自二氯甲烷和1,2-二氯乙烯和共溶剂的一次溶剂的溶液中旋转制备有色玻璃纤维产品的方法，以及溶解在主要溶剂中的聚烯烃的旋转溶液，所述溶剂选自 由二氯甲烷和1,2-二氯乙烯组成的组和共溶剂。

    Apparatus for making and collecting continuous fibers in the form of a rod-shaped batt
    8.
    发明授权
    Apparatus for making and collecting continuous fibers in the form of a rod-shaped batt 失效
    用于制造和收集呈杆状絮垫形式的连续纤维的装置

    公开(公告)号：US5667814A

    公开(公告)日：1997-09-16

    申请号：US561348

    申请日：1995-11-21

    申请人： Ashok Harakhlal Shah

    发明人： Ashok Harakhlal Shah

    IPC分类号： D01D5/11 ,  D01D7/00

    CPC分类号： D01D7/00 ,  D01D5/11

    摘要： This invention relates to making backwindable rod shaped batts or logs from highly oriented flash-spun continuous fibers. The fibers are conducted from the exit of a spinneret through a tunnel and into a two stage diverging nozzle to slow down the fibers for an organized collection in the collection section. The invention further includes an inflatable bladder in a discharge section for initiating the formation of the log and a mesh screen in the collection section for reducing the occurrence of fiber blow out through the gas discharge ports.

    摘要翻译： 本发明涉及从高度取向的闪纺连续纤维制造可逆的棒状絮片或原木。 纤维从喷丝头的出口通过隧道传导并进入两级发散喷嘴，以减慢纤维的收集部分中有组织的收集。 本发明还包括在收集部分中用于启动原木形成的排放部分中的可膨胀气囊和用于减少通过排气口的纤维吹出的发生的网筛。

    Apparatus for making and collecting continuous fibers in the form of a rod-shaped batt
    9.
    发明授权
    Apparatus for making and collecting continuous fibers in the form of a rod-shaped batt 失效

    公开(公告)号：US5635225A

    公开(公告)日：1997-06-03

    申请号：US608235

    申请日：1996-02-28

    申请人： Ashok H. Shah

    发明人： Ashok H. Shah

    IPC分类号： D01D5/11 ,  D01D5/04 ,  B29C43/22

    CPC分类号： D01D5/11

    摘要： This invention relates to making backwindable rod shaped batts or logs from highly oriented flash-spun continuous fibers. The fibers are conducted from the exit of a spinneret through a tunnel and into a two stage diverging nozzle to slow down the fibers for an organized collection in the collection section. The invention further includes an inflatable bladder in a discharge section for initiating the formation of the log and a mesh screen in the collection section for reducing the occurrence of fiber blow out through the gas discharge ports.

    Process of making plexifilamentary fiber
    10.
    发明授权
    Process of making plexifilamentary fiber 失效
    制作丛状纤维的方法

    公开(公告)号：US5607636A

    公开(公告)日：1997-03-04

    申请号：US233947

    申请日：1994-04-28

    申请人： Kohzoh Ito ,  Ikuo Ueno ,  Yoshiaki Nakayama ,  Katsuzi Hikasa

    发明人： Kohzoh Ito ,  Ikuo Ueno ,  Yoshiaki Nakayama ,  Katsuzi Hikasa

    IPC分类号： B29C47/64 ,  D01D5/11 ,  D01F6/04 ,  D04H3/16

    CPC分类号： D04H3/16 ,  D01D5/11 ,  D01F6/04 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/60

    摘要： A three-dimensional plexifilamentary fiber (26) of a high-density polyethylene group obtained by supplying a polymer to a dissolving area in a state such that the polymer is melted by a heated screw extruder (compressing zone 13, metering zone 14 to 16), supplying a solvent (CCl.sub.3 F) into the melted polymer (feed opening 18), mixing and dissolving the polymer and the solvent to make a polymer solution, and extruding the polymer solution from a nozzle (24 in FIG. 24 ) arranged in the dissolving area into a low pressure area. A nonwoven fabric is obtained through a process in which the fiber (26) is spread by striking the fiber against a skirt portion (33) having a fiber swinging face (34) and a cushioning face (35), and this nonwoven fabric has an excellent strength, covering property, and whiteness.

    摘要翻译： 通过在聚合物通过加热的螺杆挤出机（压缩区域13，计量区域14至16）熔化的状态下将聚合物供给到溶解区而获得的高密度聚乙烯组的三维丛状纤维（26） 向熔融的聚合物（进料口18）供应溶剂（CCl 3 F），混合和溶解聚合物和溶剂以制备聚合物溶液，并将聚合物溶液从布置在溶解的 区域进入低压区域。 通过纤维（26）通过将纤维撞击在具有纤维摆动面（34）和缓冲面（35）的裙部（33）上而被扩展的方法得到无纺布，该无纺布具有 优异的强度，覆盖性和白度。