Patent ID: 6352664
Filing Date: 2002-03-05
Classification: A61F,A61L,C08L,D01D,Y10S,Y10T

Abstract:
A process of making a bundle of synthetic fibers, the process comprising the steps of(A) extruding molten polymer from a shaped aperture of a spinnerette to form an extruded synthetic fiber, the aperture having a non-round cross-section, (B) quenching and lubricating the extruded synthetic fiber, the synthetic fiber having a non-round cross-section and a Single Fiber Bulk Factor greater than 4.0, and (C) forming the bundle of synthetic fibers from at least two of the synthetic fibers, the bundle having a Specific Volume greater than 4.0 cc/gm, a ratio of Maximum Potential Flux of a Bundle of Fibers to Maximum Potential Flux of a Single Fiber (MPFB/MPFSF) greater than or equal to 3.0, and a Maximum Potential Flux of a Bundle of Fibers (MPFB) greater than or equal to 0.14 cc/(den*hr).