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1. 发明授权

US07097905B2 Microcellular foamed fiber, and a process of preparing for the same 失效
标题翻译：微孔泡沫纤维及其制备方法
公开(公告)号：US07097905B2
公开(公告)日：2006-08-29
申请号：US10529543
申请日：2003-10-17
申请人： Yoeng-Baeg Choi , Young-Hwan Lee , In-Sik Han
发明人： Yoeng-Baeg Choi , Young-Hwan Lee , In-Sik Han
IPC分类号： D01F6/00
CPC分类号： D01D5/247 , D01F1/10 , D01F6/06 , D01F6/60 , D01F6/62 , Y10T428/2935 , Y10T428/2975
摘要： The present invention discloses microcellular fibers, in which microcells are formed with a density of more than 107 cells/cm3 with a supercritical fluid introduced into fiber forming polymers and have a rate of volume expansion of 1.2 to 50, ratio of microcell length to microcell diameter of more than 2 and a monofilament diameter of more than 5 μm. The microcellular fibers provide high and uniform cell densities and are good in the rate of volume expansion and the ratio of cell length to cell diameter, thus they are very excellent in lightweight feeling and touch. The microcellular fibers are made by a method for making microcellular fibers, wherein a supercritical fluid is introduced into an extruder upon melting and mixing fiber forming polymers in the extruder, to thus prepare a single-phase solution of molten polymer and gas, then the single-phase solution of molten polymer and gas is extruded (spun) through spinneret of spinning pack by subjecting the single-phase solution to a rapid pressure drop, to thus make microcellular extrusion materials, the microcellular extrusion materials are rapidly cooled by a cooling medium, and then they are wound at a winding speed of 10 to 6,000 m/min so that a spinning draft can be 2 to 300.
摘要翻译：本发明公开了一种微孔纤维，其中将微孔形成的密度大于10 7个/ cm 3，超临界流体被引入成纤聚合物中，并具有体积膨胀率为1.2〜50，微细胞长度与微细胞直径的比例大于2，单丝直径大于5um。微细胞纤维提供高且均匀的细胞密度，并且体积膨胀速率和细胞长度与细胞直径的比例是良好的，因此它们在轻量级感和触感方面非常优异。微孔纤维通过制造微孔纤维的方法制造，其中在挤出机中熔融和混合纤维形成聚合物时将超临界流体引入挤出机中，从而制备熔融聚合物和气体的单相溶液，然后将单一熔融聚合物和气体的相溶液通过使单相溶液快速压降，通过纺丝组件的喷丝头挤出（纺丝），从而制成微孔挤出材料，微孔挤出材料通过冷却介质快速冷却，然后以10〜6000m / min的卷绕速度卷绕，使得纺丝牵伸力可以为2〜300。

2. 发明申请

US20060049539A1 Microcellular foamed fiber, and a process of preparing for the same 失效
标题翻译：微孔泡沫纤维及其制备方法
公开(公告)号：US20060049539A1
公开(公告)日：2006-03-09
申请号：US10529543
申请日：2003-10-17
申请人： Yoeng-Baeg Choi , Young-Hwan Lee , In-Sik Han
发明人： Yoeng-Baeg Choi , Young-Hwan Lee , In-Sik Han
IPC分类号： D01F6/00
CPC分类号： D01D5/247 , D01F1/10 , D01F6/06 , D01F6/60 , D01F6/62 , Y10T428/2935 , Y10T428/2975
摘要： The present invention discloses microcellular fibers, in which microcells are formed with a density of more than 107 cells/cm3 with a supercritical fluid introduced into fiber forming polymers and have a rate of volume expansion of 1.2 to 50, a ratio of microcell length to microcell diameter of more than 2 and a monofilament diameter of more than 5 μm. The microcellular fibers provide high and uniform cell densities and are good in the rate of volume expansion and the ratio of cell length to cell diameter, thus they are very excellent in lightweight feeling and touch. The microcellular fibers are made by a method for making microcellular fibers, wherein a supercritical fluid is introduced into an extruder upon melting and mixing fiber forming polymers in the extruder, to thus prepare a single-phase solution of molten polymer and gas, then the single-phase solution of molten polymer and gas is extruded (spun) through spinneret of spinning pack by subjecting the single-phase solution to a rapid pressure drop, to thus make microcellular extrusion materials, the microcellular extrusion materials are rapidly cooled by a cooling medium, and then they are wound at a winding speed of 10 to 6,000 m/min so that a spinning draft can be 2 to 300.
摘要翻译：本发明公开了一种微孔纤维，其中将微孔形成的密度大于10 7个/ cm 3，超临界流体被引入成纤聚合物中，并具有体积膨胀率为1.2〜50，微细胞长度与微细胞直径之比大于2，单丝直径大于5um。微细胞纤维提供高且均匀的细胞密度，并且体积膨胀速率和细胞长度与细胞直径的比例是良好的，因此它们在轻量级感和触感方面非常优异。微孔纤维通过制造微孔纤维的方法制造，其中在挤出机中熔融和混合纤维形成聚合物时将超临界流体引入挤出机中，从而制备熔融聚合物和气体的单相溶液，然后将单一熔融聚合物和气体的相溶液通过使单相溶液快速压降，通过纺丝组件的喷丝头挤出（纺丝），从而制成微孔挤出材料，微孔挤出材料通过冷却介质快速冷却，然后以10〜6000m / min的卷绕速度卷绕，使得纺丝牵伸力可以为2〜300。

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