Kalle Gmbh & Co. Kg

Kalle Nalo Gmbh & Co Kg

Helmut Sattler

Klaus-Dieter Hammer

Herbert Gord

Rainer Neeff

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 ( ).

Method and apparatus for the manufacture of a tube made of film on a cellulose basis which an insert reinforces

A seamless cellulose-based tubular film is produced by extrusion of an aqueous cellulose-N-methylmorpholine N-oxide solution.

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Wiesbaden, Germany

Helmut Sattler