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:
Mar. 09, 1976
Filed:
Sep. 11, 1972
Applicant:
Inventors:
Geoffrey Marshall, Harrogate, EN;
Eric Ivan Riseley, Harrogate, EN;
Assignee:
Imperial Chemicl Industries, Ltd., London, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
2642 / ;
Abstract
A process for uniformly drawing tows of poly(ethylene terephthalate) to produce high shrinkage fibres wherein the drawing is effected with the tow in a hot water saturated condition at a controlled birefringence, temperature and draw ratio. The product has initial shrinkages (as defined) of at least 5% and a high uniformity.