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    • 3. 发明授权
    • Process for modifying synthetic bicomponent fiber cross-sections
    • 改性合成双组分纤维截面的方法
    • US6153138A
    • 2000-11-28
    • US288185
    • 1999-04-08
    • Charles F. Helms, Jr.Otto M. IlgDiane R. KentMatthew B. HoytJohn A. Hodan
    • Charles F. Helms, Jr.Otto M. IlgDiane R. KentMatthew B. HoytJohn A. Hodan
    • D01D5/253D01F8/12B29D31/00D01D5/24D01D8/04D01D8/12
    • D01F8/12D01D5/253Y10T428/2929Y10T428/2931Y10T428/2973Y10T428/2975
    • Bicomponent fibers of different cross-sections may be formed without changing the geometry of the spinneret orifices. More specifically, at least two polymers are co-melt-spun through an orifice of fixed geometry so as to achieve a bicomponent fiber having a desired cross-section. In order to change to a bicomponent fiber having a cross-section which is different, therefore, at least one of (1) the differential relative viscosity, (2) the relative proportions of the first and/or second polymers, and (3) the cross-sectional bicomponent distribution of the first and second polymers, is changed. In such a manner, therefore, a wide variety of bicomponent fibers having different cross-sectional geometries may be produced without changing the fixed geometry orifice through which the polymers are co-melt-spun. Thus, bicomponent fiber cross-sections may be "engineered" to suit a variety of needs without necessarily shutting down production equipment in order to change spinnerets. The bicomponent fibers are most preferably multilobal (e.g., trilobal) in which the core component is generally triangularly shaped.
    • 可以在不改变喷丝孔的几何形状的情况下形成不同横截面的双组分纤维。 更具体地说,至少两种聚合物通过固定几何形状的孔进行共熔纺丝,以达到具有所需横截面的双组分纤维。 因此,为了改变具有不同截面的双组分纤维,因此,(1)差分相对粘度,(2)第一和/或第二聚合物的相对比例和(3)中的至少一个, 改变第一和第二聚合物的横截面双组分分布。 因此,以这种方式,可以生产具有不同横截面几何形状的各种各样的双组分纤维,而不改变聚合物共熔共纺的固定几何孔。 因此,双组分纤维横截面可以“工程化”以适应各种需要,而不必关闭生产设备以改变喷丝头。 双组分纤维最优选为多叶形(例如三叶形),其中芯部分通常为三角形。
    • 10. 发明授权
    • Process for modifying synthetic bicomponent fiber cross-sections and
bicomponent fibers thereby produced
    • 用于改性由此制备的合成双组分纤维横截面和双组分纤维的方法
    • US5948528A
    • 1999-09-07
    • US980232
    • 1997-11-28
    • Charles F. Helms, Jr.Otto M. IlgDiane R. KentMatthew B. HoytJohn A. Hodan
    • Charles F. Helms, Jr.Otto M. IlgDiane R. KentMatthew B. HoytJohn A. Hodan
    • D01D5/253D01F8/12D02G3/00
    • D01F8/12D01D5/253Y10T428/2929Y10T428/2931Y10T428/2973Y10T428/2975
    • Bicomponent fibers of different cross-sections may be formed without changing the geometry of the spinneret orifices. More specifically, at least two polymers are co-melt-spun through an orifice of fixed geometry so as to achieve a bicomponent fiber having a desired cross-section. In order to change to a bicomponent fiber having a cross-section which is different, therefore, at least one of (1) the differential relative viscosity, (2) the relative proportions of the first and/or second polymers, and (3) the cross-sectional bicomponent distribution of the first and second polymers, is changed. In such a manner, therefore, a wide variety of bicomponent fibers having different cross-sectional geometries may be produced without changing the fixed geometry orifice through which the polymers are co-melt-spun. Thus, bicomponent fiber cross-sections may be "engineered" to suit a variety of needs without necessarily shutting down production equipment in order to change spinnerets. The bicomponent fibers are most preferably multilobal (e.g., trilobal) in which the core component is generally triangularly shaped.
    • 可以在不改变喷丝孔的几何形状的情况下形成不同横截面的双组分纤维。 更具体地说,至少两种聚合物通过固定几何形状的孔进行共熔纺丝,以达到具有所需横截面的双组分纤维。 因此,为了改变具有不同截面的双组分纤维,因此,(1)差分相对粘度,(2)第一和/或第二聚合物的相对比例和(3)中的至少一个, 改变第一和第二聚合物的横截面双组分分布。 因此,以这种方式,可以生产具有不同横截面几何形状的各种各样的双组分纤维,而不改变聚合物共熔共纺的固定几何孔。 因此,双组分纤维横截面可以“工程化”以适应各种需要,而不必关闭生产设备以改变喷丝头。 双组分纤维最优选为多叶形(例如三叶形),其中芯部分通常为三角形。