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:
Sep. 17, 1996
Filed:
Sep. 07, 1994
Applicant:
Inventor:
Shiv Sibal, Conyers, GA (US);
Assignee:
Hercules Incorporated, Wilmington, DE (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D01D / ; D01F / ; D01F / ; D01F / ;
U.S. Cl.
CPC ...
26417212 ; 26417214 ; 26417215 ; 26417217 ; 26417218 ;
Abstract
The invention is directed to a device for spinning fibers, especially bicomponent fibers having a sheath/core configuration. The device has, in a preferred embodiment, disposed in the spinneret orifices a grooved pin with an axial bore (a hollow pin). A polymer distribution assembly is provided for directing separate sheath and core compositions to the grooves and the bore, respectively, such that the sheath and core compositions are co-spun from the spinneret orifice. The device can be easily disassembled and a different pin configuration inserted to alter the geometry and/or ratio of the sheath and/or core sections of the fiber.