High speed spinning procedures for the manufacture of high denier polypropylene fibers and yarns
    2.
    发明授权
    High speed spinning procedures for the manufacture of high denier polypropylene fibers and yarns 失效
    用于制造高旦尼尔聚丙烯纤维和纱线的高速纺丝方法

    公开(公告)号:US07041368B2

    公开(公告)日:2006-05-09

    申请号:US10295696

    申请日:2002-11-17

    IPC分类号: D02G3/00

    摘要: Improvements in permitting greater efficiency for high denier polypropylene fiber and yarn production are provided. Generally, spinning speeds are limited for polypropylene fibers and yarns as such materials tend to break easily upon exposure to excessively high tensions associated with low- to medium-spinning speeds. As spinning is required to properly draw such high denier fibers sufficiently for fiber and yarn production, such limitations effectively prevent widespread utilization of such fibers and yarns in various end-use applications. Thus, it has been surprisingly been determined that such high denier manufactured fibers and yarns can be produced with certain nucleating additives that permit tensile strength increases to the level required for high-speed spinning procedures to be followed. Additionally, low-shrink and/or better resiliency properties are also available with the addition of such nucleating compounds within the target high denier polypropylene resins.

    摘要翻译: 提供了提高高旦尼尔聚丙烯纤维和纱线生产效率的改进措施。 通常,纺丝速度对于聚丙烯纤维和纱线是有限的,因为这样的材料在暴露于与低至中等纺丝速度相关的过高的张力时容易破裂。 由于纺丝需要适当地将纤维和纱线生产适当地拉伸这种高旦数纤维,所以这种限制有效地防止了这种纤维和纱线在各种最终用途应用中的广泛利用。 因此,令人惊讶地确定,这种高旦尼尔制造的纤维和纱线可以用某些成核添加剂制造,其允许拉伸强度增加到要遵循的高速纺丝程序所需的水平。 此外,在目标高旦尼尔聚丙烯树脂中加入这种成核化合物,也可获得低收缩和/或更好的弹性性能。

    Low-shrink polypropylene tape fibers comprising high amounts of nucleating agents

    公开(公告)号:US06794033B2

    公开(公告)日:2004-09-21

    申请号:US10655227

    申请日:2003-09-04

    IPC分类号: D01F600

    摘要: Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are provided. Such tape fibers are basically manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat (and having very high cross sectional aspect ratios) tape fibers thereafter. These inventive tape fibers (and thus the initial films and/or tubes) require the presence of relatively high amounts of certain compounds that quickly and effectively provide rigidity to the target polypropylene tape fiber. Generally, these compounds include any structure that nucleates polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling. In such a manner, the “rigidifying” nucleator compounds provide nucleation sites for polypropylene crystal growth. Subsequent to slitting the initial film and/or tube, the fiber is then exposed to sufficient heat to grow the crystalline network, thus holding the fiber in a desired position. The preferred “rigidifying” compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, certain sodium and lithium phosphate salts [such as sodium 2,2′-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive tape fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

    Low-shrink polypropylene tape fibers comprising high amounts of nucleating agents
    4.
    发明授权
    Low-shrink polypropylene tape fibers comprising high amounts of nucleating agents 有权
    包含大量成核剂的低收缩聚丙烯带纤维

    公开(公告)号:US06887567B2

    公开(公告)日:2005-05-03

    申请号:US10286622

    申请日:2002-11-02

    摘要: Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are provided. Such tape fibers are basically manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat (and having very high cross sectional aspect ratios) tape fibers thereafter. These inventive tape fibers (and thus the initial films and/or tubes) require the presence of relatively high amounts of certain compounds that quickly and effectively provide rigidity to the target polypropylene tape fiber. Generally, these compounds include any structure that nucleates polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and allowing such an oriented polymer to cool. The compounds must nucleate polymer crystals at a higher temperature than the target polypropylene without the nucleating agent during cooling. In such a manner, the “rigidifying” nucleator compounds provide nucleation sites for polypropylene crystal growth. Subsequent to slitting the initial film and/or tube, the fiber is then exposed to sufficient heat to grow the crystalline network, thus holding the fiber in a desired position. The preferred “rigidifying” compounds include dibenzylidene sorbitol based compounds, as well as less preferred compounds, such as [2.2.1]heptane-bicyclodicarboxylic acid, otherwise known as HPN-68, sodium benzoate, certain sodium and lithium phosphate salts [such as sodium 2,2′-methylene-bis-(4,6-di-tert-butylphenyl)phosphate, otherwise known as NA-11]. Specific methods of manufacture of such inventive tape fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

    摘要翻译: 提供了防止特定聚丙烯带纤维中的热收缩和水分收缩问题的改进。 这种带状纤维基本上通过初始生产聚丙烯膜或管制成,然后将其切割成非常薄的(但具有非常高的截面长宽比)的带状纤维。 这些本发明的带状纤维(和因此初始膜和/或管)需要相对高量的某些化合物的存在,其快速且有效地为目标聚丙烯带纤维提供刚性。 通常,这些化合物包括在暴露于足够的热量以熔化初始颗粒聚合物并允许这种取向聚合物冷却之后使目标聚丙烯中的聚合物晶体成核的任何结构。 在冷却期间,化合物必须在比没有成核剂的目标聚丙烯更高的温度下使聚合物晶体成核。 以这种方式,“硬化”成核剂化合物提供聚丙烯晶体生长的成核位点。 在切割初始膜和/或管之后,然后将纤维暴露于足够的热量以生长结晶网络,从而将纤维保持在期望的位置。 优选的“硬化”化合物包括二亚苄基山梨醇基化合物,以及较不优选的化合物,例如[2.2.1]庚烷 - 双环二羧酸,另外称为HPN-68,苯甲酸钠,某些钠和磷酸锂盐[例如 2,2'-亚甲基 - 双 - (4,6-二叔丁基苯基)磷酸钠,另外称为NA-11]。 制造这种本发明的带状纤维的具体方法以及由其制成的织物制品也包括在本发明内。

    Method of producing low-shrink polypropylene tape fibers
    6.
    发明授权
    Method of producing low-shrink polypropylene tape fibers 有权
    生产低收缩聚丙烯带纤维的方法

    公开(公告)号:US06998081B2

    公开(公告)日:2006-02-14

    申请号:US10027626

    申请日:2001-12-21

    摘要: Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are demonstrated herein. Such fibers are manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat tape fibers thereafter. Such fibers include rigidifying nucleating compounds that nucleate polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and upon allowing such a melt to cool. Specific methods of manufacture of such inventive tape fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

    摘要翻译: 本文证明了在特定的聚丙烯带纤维中防止热收缩和水分收缩问题的改进。 这样的纤维通过初始生产聚丙烯膜或管制造,然后将其切成非常薄的,但是扁平的带状纤维。 这样的纤维包括硬化成核化合物,其在暴露于足够的热量以熔融初始颗粒状聚合物之后并且允许这样的熔体冷却时使聚合物晶体在目标聚丙烯中成核。 制造这种本发明的带状纤维的具体方法以及由其制成的织物制品也包括在本发明内。

    Wound care device having fluid transfer properties
    7.
    发明授权
    Wound care device having fluid transfer properties 有权
    具有流体转移特性的伤口护理装置

    公开(公告)号:US08394403B2

    公开(公告)日:2013-03-12

    申请号:US13187572

    申请日:2011-07-21

    IPC分类号: A61K33/42

    摘要: This disclosure relates to wound care devices which are capable of one-way, directional flow of fluids and contaminants away from the wound site to the opposite side of the wound care device, which functions as a fluid reservoir. This fluid transport mechanism generally aids in reducing wound maceration by removing excess fluid, and potentially even bacteria, and is carried out without loss of physical integrity of the wound care device itself. In addition to providing a uni-directional fluid transport mechanism, the wound care device may contain a topically applied silver-based antimicrobial finish which provides certain levels of antimicrobial agent to the wound in order to clear infection from the wound site and control bacterial growth in the wound care dressing. Exemplary topical antimicrobial finishes include silver ion-releasing compounds.

    摘要翻译: 本公开涉及伤口护理装置,其能够使流体和污染物远离伤口部位到作为流体储存器的伤口护理装置的相对侧的单向的,定向的流动。 该流体输送机构通常有助于通过去除多余的流体,甚至可能甚至细菌来减少伤口浸渍,并且在伤口护理装置本身没有丧失身体完整性的情况下进行。 除了提供单向流体输送机构之外,伤口护理装置可以包含局部施加的银基抗微生物整理剂,其向伤口提供一定水平的抗微生物剂,以便清除伤口部位的感染并控制细菌生长 伤口护理敷料。 示例性的局部抗微生物整理剂包括银离子释放化合物。

    Wound care device having fluid transfer properties
    9.
    发明授权
    Wound care device having fluid transfer properties 有权
    具有流体转移特性的伤口护理装置

    公开(公告)号:US08021685B2

    公开(公告)日:2011-09-20

    申请号:US12908126

    申请日:2010-10-20

    IPC分类号: A61K33/42

    摘要: This disclosure relates to wound care devices which are capable of one-way, directional flow of fluids and contaminants away from the wound site to the opposite side of the wound care device, which functions as a fluid reservoir. This fluid transport mechanism generally aids in reducing wound maceration by removing excess fluid, and potentially even bacteria, and is carried out without loss of physical integrity of the wound care device itself. In addition to providing a uni-directional fluid transport mechanism, the wound care device may contain a topically applied silver-based antimicrobial finish which provides certain levels of antimicrobial agent to the wound in order to clear infection from the wound site and control bacterial growth in the wound care dressing. Exemplary topical antimicrobial finishes include silver ion-releasing compounds.

    摘要翻译: 本公开涉及伤口护理装置,其能够使流体和污染物远离伤口部位到作为流体储存器的伤口护理装置的相对侧的单向的,定向的流动。 该流体输送机构通常有助于通过去除多余的流体,甚至可能甚至细菌来减少伤口浸渍,并且在伤口护理装置本身没有丧失身体完整性的情况下进行。 除了提供单向流体输送机构之外,伤口护理装置可以包含局部施加的银基抗微生物整理剂,其向伤口提供一定水平的抗微生物剂,以便清除伤口部位的感染并控制细菌生长 伤口护理敷料。 示例性的局部抗微生物整理剂包括银离子释放化合物。

    Wound Care Device Having Fluid Transfer Properties
    10.
    发明申请
    Wound Care Device Having Fluid Transfer Properties 有权
    具有流体传递特性的伤口护理装置

    公开(公告)号:US20110040289A1

    公开(公告)日:2011-02-17

    申请号:US12908126

    申请日:2010-10-20

    IPC分类号: A61M27/00

    摘要: This disclosure relates to wound care devices which are capable of one-way, directional flow of fluids and contaminants away from the wound site to the opposite side of the wound care device, which functions as a fluid reservoir. This fluid transport mechanism generally aids in reducing wound maceration by removing excess fluid, and potentially even bacteria, and is carried out without loss of physical integrity of the wound care device itself. In addition to providing a uni-directional fluid transport mechanism, the wound care device may contain a topically applied silver-based antimicrobial finish which provides certain levels of antimicrobial agent to the wound in order to clear infection from the wound site and control bacterial growth in the wound care dressing. Exemplary topical antimicrobial finishes include silver ion-releasing compounds.

    摘要翻译: 本公开涉及伤口护理装置,其能够使流体和污染物远离伤口部位到作为流体储存器的伤口护理装置的相对侧的单向的,定向的流动。 该流体输送机构通常有助于通过去除多余的流体,甚至可能甚至细菌来减少伤口浸渍,并且在伤口护理装置本身没有丧失身体完整性的情况下进行。 除了提供单向流体输送机构之外,伤口护理装置可以包含局部施加的银基抗微生物整理剂,其向伤口提供一定水平的抗微生物剂,以便清除伤口部位的感染并控制细菌生长 伤口护理敷料。 示例性的局部抗微生物整理剂包括银离子释放化合物。