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. 16, 2004
Filed:
Jan. 24, 2001
Heinrich Firgo, Vöcklabruck, AT;
Rudolf Kraft, Wels, AT;
Harmut Rüf, Vöcklabruck, AT;
Christian Schlossnikl, Vöcklabruck, AT;
Lenzing Aktiengesellschaft, Lenzing, AT;
Abstract
The invention relates to a process for the production of a spunlaid fabric containing solvent-spun cellulosic fibers. The process is characterised in that a solution of cellulose in an aqueous tertiary amine oxide is extruded through a spinneret ( ) with orifices and the extruded filaments ( ) are stretched in an air gap and led into a precipitation bath ( ), the filaments in the precipitation bath ( ) are intercepted by a first conveyor device ( ) whereby a curtain of threads of filaments basically arranged parallel to each other and basically of constant thickness is formed on the first conveyor device ( ), the curtain of threads is transported by means of the first conveyor device ( ) out of the precipitation bath ( ) onto a second conveyor device inclined downwards ( ), and the curtain of threads is transported downwards on the second conveyor device ( ) onto a third conveyor device ( ), where the third conveyor device ( ) draws off the curtain of threads at a speed less than the speed of the curtain of threads transported downwards on the second conveyor device.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile