Lenzing Aktiengesellschaft

Nutrition & Biosciences USA 4, Inc.

Christoph Schrempf

Wilhelm Feilmair

Eduard Mulleder

Hartmut Ruf

Heinrich Firgo

Martin Neunteufel

Hartmut Rüf

Gert Kroner

Franz Alfred Dürnberger

Andreas Gressenbauer

Johann Pillichshammer

Ernst Reiter

Sigrid Redlinger

Dieter Eichinger

Johann Manner

Franz Schwenninger

Wolfram Kalt

Susanne Carls

Mohammad Abu-Rous

Ulrich Möderl

Franz Gugerell

Stefan Zikeli

Friedrich Ecker

Johann Männer

Christian Sperger

Bruno Mangeng

Peter Dobson

Gabriele Schild

Arnold Nigsch

Heidrun Fuchs

Werner Richardt

Hartmut R&uuml;f

Christian Schirk

Eduard M&uuml;lleder

Helmut Fuchs

Ernest Rauch

Rudolf Aigner

Gerhard Malzner

Michael Maier

Karl Michael Hainbucher

Kurt Christian Schuster

Franz Dürnberger

Wolfgang Uhlir

A process and a system for washing filaments. A filament to be washed and a washing liquid are passed in a countercurrent. The process and the system include two washing stages. In each washing stage the filament is brought into contact with a fresh washing liquid by a washing element in such a way that only an amount of the washing liquid is transferred to the filament, which adheres to the filament itself, for example by adhesion. The washing liquid is then separated from the filament again in each washing stage, and a separated washing liquid is collected in such a way that it is not mixed with the separated washing liquid from other washing stages of the process but is used as the fresh washing liquid in the washing element of a preceding washing stage.

Counter-flow washing

The invention relates to a method for the production of lyocell staple fibers, comprising the steps in the following order: a) extruding filaments from a solution of cellulose in an organic solvent; b) precipitating the cellulose for the formation of continuous cellulose filaments; c) washing the cellulose filaments; d) contacting the cellulose filaments with a crosslinking agent; e) reacting the cellulose filaments with the crosslinking agent in a reaction chamber; f) washing the treated cellulose filaments; g) cutting the washed cellulose filaments into staple fibers; h) forming a nonwoven fleece from the staple fibers and pressing the nonwoven fleece; and i) finishing the nonwoven fleece and pressing the nonwoven fleece.

Method for producing lyocell staple fibers

A method of producing lyocell filaments employs a steam heatable spinneret having a rectangular shape with an aspect ratio of more than 2 and comprising at least a top housing and a nozzle frame. The spinneret is heated and used for spinning cellulosic filaments from a cellulose solution in a solvent. A lyocell process employs the spinneret.

Spinneret, method of heating a spinneret and lyocell process

Silk woven fabric is known and renowned for its touch. The drawback of silk, however, is its price, its poor washability, and low resistance against certain chemical treatments. It is therefore the object of the invention to provide a silk-like woven fabric which overcomes these problems. According to the invention, this problem is solved by providing a silk-like woven fabric () made from weft yarns () and warp yarns (), wherein at least one of the weft yarns () and the warp yarns () contains or consists of lyocell filaments (). Especially twisted lyocell filament yarns are used, the resulting material has a touch comparable to silk and physical properties that are equal to or even surpass those of silk. Moreover, the lyocell filament yarns () may have a higher twist than silk yarns, other cellulose yarns, or synthetic yarns.

Silk-like woven garment containing or consisting of lyocell filaments

The present invention provides a process for the viable production of lyocell cellulose continuous filament yarns at very high production speeds.

Cellulose filament process

The present invention provides a process for the viable removal of liquid from lyocell cellulose continuous filament yarns at very high production speeds.

Process for liquid removal from cellulose filaments yarns or fibers

The invention shows a spin-up device () and a method for spinning up a spinning device () for the continuous extrusion of molded bodies () from a spinning solution (), containing a solvent and cellulose dissolved in the solvent, wherein the molded bodies are extruded from the spinning solution () through spinnerets () of the spinning device () in the form of a loose spinning curtain (), the molded bodies () of the loose spinning curtain () are combined into a molded body bundle () after the extrusion, and the molded body bundle () is, in a further step, fed to a draw-off member () of the spinning device () in order to start a continuous extrusion of the molded bodies (). In order to make the spin-up method simpler in terms of process technology and more reproducible, it is proposed to increase the tensile strength of at least some areas of the molded bodies () of the loose spinning curtain () after their extrusion and before combining them into a molded body bundle ().

Spinning device and method for spinning up a spinning device, and spin-up device

A lining fabric () for a clothing article (). The lining fabric () is hygroscopic to ensure good wearing comfort, and has sufficient dimensional stability to allow washing in a household laundry machine. The lining fabric () is made from yarns () containing or consisting of Lyocell filaments (). The Lyocell filaments () have an average linear density of less than 1.5 dtex, preferably less than 1.4 dtex and even more preferred, less than 1.3 dtex. The washing shrinkage after five washings is preferably less than 4% in each of two perpendicular directions.

Lyocell filament lining fabric

The present invention provides a process for the viable production of lyocell cellulose continuous filament yarns.

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

Polysaccharide fibers and method for the production thereof

The present invention relates to a method for the production of polysaccharide fibers having increased fibrillation tendency, which, as a fiber-forming substance, comprise a mixture of cellulose and &#x3b1;(1&#x2192;3)-glucan, as well as to the fibers made thereof and to their use.

Polysaccharide fibers with an increased fibrillation tendency and method for the production thereof

The present invention relates to a fiber of the Lyocell type which has a titer of from 0.8 dtex to 3.3 dtex and is characterized by the following relationships: The fiber according to the invention displays a specific combination of properties with regard to the H&#xf6;ller factors, the flexibility and the abrasion resistance within a planar assembly. Hence, the fiber shows a behavior more similar to viscose and can be processed in the textile chain according to viscose standard methods.

Cellulose fiber

The invention relates to a high-concentration mixer () for producing a suspension (), comprising a stationary container () and an agitator () arranged in the container axis (), which agitator is connected to a motor via a flange () provided in the region of the container bottom (), which motor is designed for rotationally driving the agitator () for mixing the suspension () provided in the container (), wherein the agitator () has helical coils () which bring about a vertical downward flow () of the suspension () in the centre of the container () and a vertical upward flow () of the suspension () in the region of the container wall, wherein the flange () comprises at least one blade () provided on its circumference, which is designed for wiping the suspension () from the container () and for supporting the vertical upward flow () of the suspension () in the region of the container wall.

High-concentration mixer for producing a cellulose suspension having a high cellulose concentration

The present invention relates to the preparation of a cellulose suspension, particularly of a premixture for the preparation of a cellulose suspension in organic solvents such as an aqueous N-methylmorpholine N-oxide (NMMO) solution.

Method for producing a cellulose suspension

The present invention relates to flame-retardant Lyocell fibers which include incorporated inorganic additives which are particularly suited for use in flame barriers for articles of manufacture, such as mattresses and upholstered furniture applications.

Growing community of inventors

Bad Schallerbach, Austria

Christoph Schrempf