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:
Sep. 28, 2004
Filed:
Jun. 15, 2001
Herbert Gord, Ingelheim, DE;
Klaus-Dieter Hammer, Mainz, DE;
Helmut Sattler, Wiesbaden, DE;
Rainer Neeff, Wiesbaden, DE;
Kalle GmbH & Co. KG, Wiesbaden, DE;
Abstract
The invention relates to a film tube ( ) based on cellulose which is produced by extruding an aqueous cellulose-N-methyl-morpholine-N-oxide (NMMO) solution through a ring nozzle ( ) onto a lining ( ). The film tube ( ) is manufactured by means of a vertically descending spinning in a spinning vat ( ) in which a spinning bath ( ) is located. The film tube ( ) which is submerged in the spinning bath ( ) passes through an air gap ( ) between the underside of a nozzle block ( ) and the upper surface of the spinning bath ( ) and, internally, is pressurized, supported and slightly stretched in a transversal manner by compressed air. The film tube ( ) is filled with an inner bath solution ( ) via a supply tube ( ). An idle roller ( ) is situated near the bottom of the spinning vat ( ) in order to guide the film tube ( ) around and, afterwards, out of the spinning vat ( ) in an upward sloping manner. The film tube is laid flat along a contact section ( ) of the idle roller ( ).