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    Spin pack assembly
    1.
    发明申请
    Spin pack assembly 有权
    旋转组件

    公开(公告)号：US20120001362A1

    公开(公告)日：2012-01-05

    申请号：US12884321

    申请日：2010-09-17

    申请人： Ravi R. Vedula ,  James E. Bryson, JR.

    发明人： Ravi R. Vedula ,  James E. Bryson, JR.

    IPC分类号： B29C47/78

    CPC分类号： D01D1/10 ,  D01D4/00 ,  D01D4/02 ,  D01D5/08 ,  D01F6/70

    摘要： A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly.

    摘要翻译： 用于熔纺纺丝弹性纤维的纺丝组件。 旋转组件包括具有中心孔和几个圆形图案孔的圆形破碎板，每个圆形图案具有多个孔。 每个圆形图案围绕中心孔的轴线同心地定位。 外圆形图案中的孔具有比内圆形图案中的孔更大的直径。 旋转组件还具有喷丝板，其中喷丝板的出口孔凹入纺丝组件的主体中。

    Melt spun polyether TPU fibers having mixed polyols and process
    3.
    发明授权
    Melt spun polyether TPU fibers having mixed polyols and process 有权
    具有混合多元醇和工艺的熔融纺丝聚醚TPU纤维

    公开(公告)号：US08148475B2

    公开(公告)日：2012-04-03

    申请号：US10880001

    申请日：2004-06-29

    申请人： Ravi R. Vedula ,  Yona Eckstein ,  Yinbing Xia ,  James E. Bryson, Jr. ,  Christopher A. Sprague ,  Julius Farkas

    发明人： Ravi R. Vedula ,  Yona Eckstein ,  Yinbing Xia ,  James E. Bryson, Jr. ,  Christopher A. Sprague ,  Julius Farkas

    IPC分类号： C08G18/10 ,  C08G18/48 ,  C08J3/24

    CPC分类号： D01F6/70 ,  C08G18/12 ,  C08G18/3206 ,  C08G18/3215 ,  C08G18/4808 ,  C08G18/4854 ,  C08G18/6674 ,  C08G18/7657 ,  D06P3/82 ,  Y10T442/60 ,  C08G18/48 ,  C08G18/42

    摘要： Thermoplastic polyether polyurethane polymers are disclosed which are mixed with a crosslinking agent to achieve long run times in a melt spinning process to make elastic fibers. The crosslinking agent is preferably a polyether or polyester polyol reacted with a diisocyanate. A melt spinning process is also disclosed using a polyether polyurethane with a crosslinking agent. Long melt spinning run times can be achieved without experiencing excessive pressure buildup in the spinneret and fiber breakage. The thermoplastic polyether polyurethane polymers are made by reacting: (1) a blend of two or more hydroxyl terminated intermediates wherein one intermediate is a polyether intermediate and has a higher number average molecular weight than the other said polyether intermediates, and wherein the weighted average number average molecular weight of said blend is greater than 1200 Daltons; (2) at least one polyisocyanate; and (3) at least one hydroxyl terminated chain extender. Melt spun fibers disclosed have excellent dye pickup, bleach resistance, and color fastness. The melt spun fibers can be dyed with polyester fibers and retain excellent physical properties.

    摘要翻译： 公开了热塑性聚醚聚氨酯聚合物，其与交联剂混合以在熔融纺丝工艺中实现长时间以制备弹性纤维。 交联剂优选与二异氰酸酯反应的聚醚或聚酯多元醇。 还公开了使用具有交联剂的聚醚聚氨酯的熔融纺丝法。 可以实现长熔融纺丝运行时间，而不会在喷丝头和纤维断裂中产生过大的压力。 热塑性聚醚聚氨酯聚合物通过以下方法制备：（1）两个或多个羟基封端的中间体的共混物，其中一个中间体是聚醚中间体并且具有比其它所述聚醚中间体更高的数均分子量，并且其中加权平均数 所述共混物的平均分子量大于1200道尔顿; （2）至少一种多异氰酸酯; 和（3）至少一个羟基封端的扩链剂。 公开的熔纺纤维具有优异的染料吸收，耐漂白性和耐色牢度。 熔纺纤维可以用聚酯纤维染色并保持优异的物理性能。

    Method of melt spinning an elastomeric fiber
    6.
    发明授权
    Method of melt spinning an elastomeric fiber 有权
    熔体纺丝弹性体纤维的方法

    公开(公告)号：US08425821B2

    公开(公告)日：2013-04-23

    申请号：US12884321

    申请日：2010-09-17

    申请人： Ravi R. Vedula ,  James E. Bryson, Jr.

    发明人： Ravi R. Vedula ,  James E. Bryson, Jr.

    IPC分类号： D01D5/38 ,  D01D4/06

    CPC分类号： D01D1/10 ,  D01D4/00 ,  D01D4/02 ,  D01D5/08 ,  D01F6/70

    摘要： A spin pack assembly for use in melt spinning elastic fibers. The spin pack assembly includes a circular breaker plate having a center aperture and several circular patterns of apertures with each circular pattern having a plurality of apertures. Each circular pattern is located concentrically about an axis of the center aperture. The apertures in the outer circular patterns have a greater diameter than the apertures in the inner circular patterns. The spin pack assembly also has a spinneret plate where the exit aperture of the spinneret plate is recessed in the body of the spin pack assembly.

    摘要翻译： 用于熔纺纺丝弹性纤维的纺丝组件。 旋转组件包括具有中心孔和几个圆形图案孔的圆形破碎板，每个圆形图案具有多个孔。 每个圆形图案围绕中心孔的轴线同心地定位。 外圆形图案中的孔具有比内圆形图案中的孔更大的直径。 旋转组件还具有喷丝板，其中喷丝板的出口孔凹入纺丝组件的主体中。

    High strength Non-Woven Elastic Fabrics
    8.
    发明申请
    High strength Non-Woven Elastic Fabrics 审中-公开
    高强度非织造弹性面料

    公开(公告)号：US20110183567A1

    公开(公告)日：2011-07-28

    申请号：US13011954

    申请日：2011-01-24

    申请人： Ravi R. Vedula ,  James E. Bryson, JR. ,  Mouh-Wahng Lee

    发明人： Ravi R. Vedula ,  James E. Bryson, JR. ,  Mouh-Wahng Lee

    IPC分类号： D04H5/06 ,  B29C47/00

    CPC分类号： D01F6/94 ,  D01D5/0985 ,  D01F1/02 ,  D01F1/10 ,  D01F6/70 ,  D04H1/56 ,  D04H3/10 ,  Y10T442/601

    摘要： Elastic non-woven fabrics are disclosed which are made in a melt blown process or a spunbond process. The fabric is made from a thermoplastic polyurethane polymer mixed with a crosslinking agent to give high strength elastic non-woven fabric. The crosslinking agent is added to the polymer melt prior to the melt passing through the die which forms the individual fibers. Further processing the non-woven is also disclosed.

    摘要翻译： 公开了以熔喷法或纺粘法制造的弹性无纺织物。 织物由与交联剂混合的热塑性聚氨酯聚合物制成，以提供高强度弹性无纺织物。 在熔融物通过形成单根纤维的模具之前，将交联剂加入到聚合物熔体中。 还公开了进一步处理无纺布。

    Soft, Elastic, Plasticizer-Free Thermoplastic Polyurethane And Process To Synthesize The Same
    9.
    发明申请
    Soft, Elastic, Plasticizer-Free Thermoplastic Polyurethane And Process To Synthesize The Same 有权
    软，弹性，无增塑剂的热塑性聚氨酯及其合成方法

    公开(公告)号：US20090100723A1

    公开(公告)日：2009-04-23

    申请号：US12255889

    申请日：2008-10-22

    申请人： Julius Farkas ,  Ravi R. Vedula ,  Charles P. Jacobs

    发明人： Julius Farkas ,  Ravi R. Vedula ,  Charles P. Jacobs

    IPC分类号： A43B13/12 ,  C08G63/06 ,  C08G18/00 ,  D03D15/00 ,  A43B23/00 ,  A43B13/38 ,  D04H3/16 ,  B29C45/00

    CPC分类号： C08G18/664 ,  C08G18/0895 ,  C08G18/4238 ,  C08G2410/00 ,  Y10T442/30 ,  Y10T442/40 ,  Y10T442/681

    摘要： The present invention discloses a thermoplastic polyurethane which is comprised of the reaction product of (1) a hydroxyl terminated intermediate, (2) a polyisocyanate, and (3) a glycol chain extender selected from the group consisting of ethylene glycol and propylene glycol; wherein the hydroxyl terminated intermediate is selected from the group consisting of hydroxyl terminated polyether intermediates and hydroxyl terminated polyester intermediates; wherein the hydroxyl terminated intermediate is comprised of repeat units that are derived from a branched glycol or is comprised of at least 2 different repeating units; wherein the thermoplastic polyurethane has a weight average molecular weight of at least 100,000 Daltons; wherein the thermoplastic polyurethane includes hard segments that are the reaction product of the polyisocyanate and the glycol chain extender; and wherein the hard segments represent from 10 to 40 weight percent of the total weight of the thermoplastic polyurethane.

    摘要翻译： 本发明公开了一种热塑性聚氨酯，其由（1）羟基封端的中间体，（2）多异氰酸酯和（3）选自乙二醇和丙二醇的二醇扩链剂的反应产物组成; 其中羟基封端的中间体选自羟基封端的聚醚中间体和羟基封端的聚酯中间体; 其中羟基封端的中间体由衍生自支化二醇的重复单元组成或由至少2个不同的重复单元组成; 其中所述热塑性聚氨酯具有至少100,000道尔顿的重均分子量; 其中所述热塑性聚氨酯包括作为所述多异氰酸酯和所述乙二醇增链剂的反应产物的硬链段; 并且其中硬链段占热塑性聚氨酯总重量的10-40重量％。