The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 12, 2004
Filed:
Apr. 17, 2002
Arthur Talley, Melbourne, FL (US);
Arnold E. Wilkie, Merritt Island, FL (US);
Jeffrey S. Haggard, Cocoa, FL (US);
Hills, Inc., West Melbourne, FL (US);
Abstract
A spinneret ( ) for extruding side-by-side bicomponent fibers includes a spinneret hole ( ) having a cross-sectional shape transverse to the direction of polymer flow that is asymmetric with respect to the arrangement of the side-by-side streams of polymer components therein. The lower viscosity component flows through a portion of the spinneret hole having a higher perimeter-to-area cross-sectional shape than the portion of the spinneret hole through which the higher viscosity component through which the lower viscosity component flows. The increased surface area (i.e., cross-sectional perimeter) of the spinneret hole contacting the lower viscosity polymer flow compensates for the viscosity differential between the polymer components that would otherwise result in dogleg bending of the extrudate.