Lenzing Aktiengesellschaft

Andreas Schweigart

Gerold Riedl

Christian H Schlossnikl

Peter Gspaltl

Johann Kalleitner

Heinrich Firgo

Gert Kroner

Siegfried Ambrosch

Elisabeth Reiter

Franz Dümberger

Franz Dürnberger

The present invention relates to a method for the production of films made of polysaccharides which, as a fiber-forming substance, contain &#x3b1;(1&#x2192;3)-glucan, as well as to the films made thereof and to their use.

Polysaccharide film and method for the production thereof

The invention relates to a process for the manufacture of cellulosic flat films and cellulosic membranes in the form of flat membranes whereby a solution of cellulose in an aqueous tertiary amine oxide is moulded in film form using an extrusion nozzle which has an oblong extrusion gap and is led into a precipitation bath via an air gap whereby the cellulosic flat film is formed in the precipitation bath, characterized in that the cellulosic flat film is stretched in the transverse direction after entering the precipitation bath.

Process for the production of cellulosic moulded bodies

The invention is concerned with a cellulose sponge which may be produced by mixing a solution of cellulose in an aqueous tertiary amine-oxide with a pore forming agent and a sponging agent and subsequently exposing it to conditions which cause a decomposition of the sponging agent and a foaming of the cellulose solution, whereafter the foamed cellulose is contacted with water to precipitate the cellulose.

Process for forming a cellulose sponge

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St. Georgen im Attergau, Austria

Andreas Schweigart