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:
Sep. 16, 1976
Applicant:
Inventor:
Cecil Everett Reese, Kinston, NC (US);
Assignee:
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ; D02J / ; D01D / ;
U.S. Cl.
CPC ...
5715 / ; 5714 / ; 28246 ; 2642 / ;
Abstract
A process for producing a feed yarn which can be draw-textured, without difficulty with filaments melting or sticking together, to have a programmed distribution of deeper-dyeing sections along the resulting false-twist textured yarn. The feed yarn is prepared by passing a spin-oriented polyester yarn in substantially undrawn condition past a source of heat where it is heated intermittently along its length to provide a programmed distribution of heat-treated sections. When drawn, the heat-treated sections will draw to a lesser extent and will then dye to deeper shades than the rest of the yarn.