Process for the production of a cellulose moulded body

D - Textiles – Paper – 01 – F

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D01F 2/00 (2006.01)

Patent

CA 2175563

A process for the production of a cellulose moulded body, particularly cellulose fibres, characterized by the combination of the measures of - feeding a cellulose-containing material into an aqueous solution of a tertiary amine-oxide in order to suspend said cellulose-containing material, - removing water from the suspension while intensively mixing it and providing elevated temperature and reduced pressure, until a solution of cellulose is produced and - moulding said solution by means of a moulding device, particularly a spinneret, and introducing it into a precipitation bath in order to precipitate the dissolved cellulose, provided that as said cellulose-containing material, basically shredded waste paper, shredded cellulose-containing fibre assemblies and/or shredded, mechanically and/or chemically broken up annual plants are used.

L'invention concerne un procédé de production d'un corps moulé cellulosique, notamment des fibres de cellulose, qui se caractérise en ce qu'il regroupe la combinaison des mesures suivantes: - un matériau contenant de la cellulose est introduit dans une solution aqueuse d'oxyde d'amine tertiaire, afin de tenir le matériau contenant de la cellulose en suspension, - de l'eau est extraite de la suspension, par un mélange intensif et par application d'une température élevée et d'une pression réduite, jusqu'à obtention d'une solution de cellulose, et - la solution est moulée à l'aide d'un outil de moulage, notamment une filière, et est introduite dans un bain de précipitation, afin de précipiter la cellulose dissoute, sous réserve que le matériau contenant de la cellulose utilisé soit principalement du papier de récupération déchiqueté, des textiles de récupération contenant de la cellulose déchiquetés et/ou des plantes annuelles broyées, désagrégées mécaniquement et/ou chimiquement.

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