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:
Oct. 04, 2011
Filed:
Apr. 11, 2008
Douglas B. Brown, Fremont, WI (US);
Jeffrey D. Stark, Neenah, WI (US);
Carmen A. Granato, Sr., Neenah, WI (US);
Duane K. Zacharias, Appleton, WI (US);
Douglas B. Brown, Fremont, WI (US);
Jeffrey D. Stark, Neenah, WI (US);
Carmen A. Granato, Sr., Neenah, WI (US);
Duane K. Zacharias, Appleton, WI (US);
Reifenhauser GmbH & Co. KG Maschinenfabrik, Troisdorf, DE;
Abstract
An array of nozzles is disclosed for forming multiple cellulose fibers. Each nozzle has a longitudinal central axis and includes a tube with a cross-section having a diameter through which an aqueous solution of cellulose and a solvent can be extruded into a molten filament. A first opening is present which surrounds each of the tubes. The first opening has a cross-section with a diameter, and each of the first openings is capable of emitting a pressurized gas which surrounds one of the extruded molten filaments. At least three second openings are spaced away from each of the first openings. Each of the second openings is capable of emitting a pressurized gas stream essentially parallel to the longitudinal central axis of each of the nozzles, and each of the pressurized gas streams functions to shroud one of the extruded molten filaments.