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:
Apr. 02, 2002
Filed:
Feb. 02, 2000
Istvan Csonka, Lucerne, CH;
Rhodia Filtec AG, Emmenbruecke, CH;
Abstract
The invention concerns a method for making industrial continuous filament yarn by entangling a polyester multifilament yarn at high temperature, under yarn traction force less than 140 cN. By means of a tangling cop tube consisting of a body ( ) provided with a perforated plate ( ) and a deflection plate ( ), heat is directly transmitted to the polyester filament and the air passing through the cop tube body ( ) is directly transmitted to a metal block ( ) with high thermal conductivity directly connected to the deflection plate ( ). In the device for implementing said method, the deflection plate ( ) is directly connected to a metal block ( ) with high thermal conductivity, wherein a bore ( ) is provided for housing a heating element. The polyester continuous filament designed for spinning applications, with a yarn count of 500-2000 dtex, has a resistance of at least 70 cN/tex for a breaking elongation less than 24%, and a knot strength higher than 80% and a spacing between 2 knots more than 4.0 cm.