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:
Nov. 18, 1980
Filed:
Oct. 12, 1978
Ugo Paoletti, Monza, IT;
Alessandro Volterra, Milan, IT;
Abstract
The removal of water from viscose rayon yarns in the continuous spinning of such yarns is improved by subjecting the yarns to the action of an air jet before the thermal drying treatment. The air jet impinges on the yarns adjacent their passage from the last liquid treatment zone to the drying zone and is directed approximately tangentially to the treatment roller, that is to the helicoidal path of the yarn. The removal of the water is completed by thermal drying. Up to 50% of the water content, and several times the dry weight of the yarn, is eliminated by the pneumatic treatment. The air jet is directed on the yarn by means of a slit-shaped nozzle having its larger dimension substantially parallel to the treatment roller. A plurality of yarns can be treated concurrently on the same device having a plurality of guide rollers.