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:
Jan. 30, 1996
Filed:
Mar. 16, 1994
Arun P Aneja, Greenville, NC (US);
David G Bennie, Rocky Point, NC (US);
Robert J Collins, Wilmington, NC (US);
Hans Rudolf Frankfort, Kinston, NC (US);
Stephen B Johnson, Wilmington, NC (US);
Benjamin H Knox, Wilmington, NC (US);
Elmer E Most, Jr, Kinston, NC (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A post-coalescence melt-spinning process for preparing fine undrawn hollow polyester filaments having excellent mechanical quality and uniformity at high speeds (2-5 km/min) involving selection of polymer viscosity and spinning conditions, whereby the void content of the resulting new undrawn filaments is essentially maintained or increased on cold-drawing or hot-drawing with or without post heat treatment, and the new fine hollow polyester filaments obtained thereby.