Method and device for cleaning spinnerets while producing cellulose spunbonded nonwoven fabric

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United States of America Patent

PATENT NO 11873581
APP PUB NO 20220316096A1
SERIAL NO

17611825

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
LENZING AKTIENGESELLSCHAFT4860 LENZING

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gschwandtner, Matthias Attersee, AT 1 1
Malzner, Markus Ungenach, AT 2 1
Sagerer-Foric, Ibrahim Vocklabruck, AT 19 11

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