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:
Aug. 23, 1977
Filed:
Jun. 21, 1976
Applicant:
Inventor:
Adly Abdel-Moniem Gorrafa, Hockessin, DE (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
28220 ; 28240 ; 5715 / ; 28271 ;
Abstract
A process for drawing and air-jet bulking polyester yarn which has been spin-oriented by melt-spinning at high speed. The yarn is drawn while heating it with a heater at a temperature greater than 180.degree. C and the drawn yarn is immediately air-jet textured to produce crunodal surface loops. Boil-off shrinkages of less than 3.5 percent are obtained without heating the yarn after it is drawn.