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:
Feb. 16, 1982
Filed:
Jul. 26, 1979
Robert K Stanley, Media, PA (US);
Techniprises Limited, Douglas, GB;
Abstract
Textile strands are dyed while being bulked or crimped by lengthwise compression. The dyestuff advantageously is supplied in finely divided liquid or preferably solid form and is injected, as by aspiration or by positive pressure methods, into fluid hot enough to vaporize it before such fluid together with such dyestuff comes into contact with strand so treated. Such strand, forwarded with or by flow of hot propellant fluid into a foraminous region in which the strand is confined laterally but from which the fluid may escape except where the strand is compressed into a compact mass, is exposed to the dyestuff by permeation with such fluid. Lateral escape of the propellant fluid is effected, preferably before such exposure, and is utilized to control an operating condition, such as temperature of strand input into and/or speed of removal of strand from the chamber, for improved uniformity of dyeing and bulking or crimping of the strand.