Lenzing Aktiengesellschaft

Markus Malzner

Ibrahim Sagerer-Foric

Matthias Gschwandtner

Martin Lichtenthal

A plant () for the production of spunbonded nonwoven (), comprising a spinning solution production (), a spinning system (), a device () for the delivery of coagulation liquid, at least one conveying device () for depositing the spunbonded nonwoven (), and a collecting device () for the spunbonded nonwoven (), wherein at least one discharge device () is provided between the device () for the delivery of coagulation liquid and the collecting device () for the spunbonded nonwoven ().

Method for recovering solvent and cellulose in the production of cellulosic spun-bonded nonwoven fabrics

The present invention relates to a method for cleaning a spunbonding spinneret for the production of cellulosic spunbonded nonwoven fabric from a solution of cellulose in an aqueous organic solvent by extruding the solution through nozzle holes of the spunbonding spinneret to form filaments and stretching the filaments in the direction of extrusion by means of a gas stream, during which method contaminations containing cellulose will accumulate on the spinneret surface. The method according to the invention comprises the steps of: a) spraying the contamination with an aqueous fluid precipitating the cellulose; and b) detaching and carrying away the contamination by means of the gas stream.

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Ungenach, Austria

Markus Malzner