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:
Apr. 09, 1996
Filed:
Jul. 14, 1993
Applicant:
Inventor:
Barrie L Davies, Weddington, NC (US);
Assignee:
Hoechst Celanese Corporation, Somerville, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D01F / ;
U.S. Cl.
CPC ...
26417316 ; 264D / ;
Abstract
A method of melt spinning sheath/core bicomponent fibers including the steps of passing multiple streams of pressurized molten core polymer from distributor flow passages into multiple parallel spinneret flow passages in respective axial or coaxial alignment with said multiple distributor flow passages. In pressured molten sheath polymer is passed through channels positioned in the top surface of the spinneret and surrounding the inlets of the spinneret flow passages. The sheath polymer is directed to flow from the channels into each of the spinneret flow passages and each of the polymer streams at a controlled pressure drop.