MOLDABLE CELLULOSE FIBER BASED MATERIAL

The present invention relates to a method for manufacturing modified cellulose fibers for a moidable cellulose fiber based material, said method comprising: a) providing a chemical or semi-chemical wood pulp comprising cellulose fibers, and optionally subjecting the pulp to alkaline extraction to ob...

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Bibliographische Detailangaben
Hauptverfasser:	SETÄLÄ, Harri, HARLIN, Ali, KETOJA, Jukka, KOSKELA, Hanna, HJELT, Tuomo, KAMMIOVIRTA, Kari, LAINE, Christiane
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONVEYING DERIVATIVES THEREOF HANDLING THIN OR FILAMENTARY MATERIAL IMPREGNATING OR COATING OF PAPER MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNERANALOGOUS TO PAPER MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN AMANNER ANALOGOUS TO PAPER METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PACKING PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PERFORMING OPERATIONS POLYSACCHARIDES PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G UNPACKING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUSTO PAPER
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Beschreibung
Zusammenfassung:	The present invention relates to a method for manufacturing modified cellulose fibers for a moidable cellulose fiber based material, said method comprising: a) providing a chemical or semi-chemical wood pulp comprising cellulose fibers, and optionally subjecting the pulp to alkaline extraction to obtain an alkaline extracted pulp; and b) subjecting the pulp or the alkaline extracted pulp of step a) to a chemical treatment with an alkaline solution and/or an organic solvent to obtain a treated pulp or treated alkaline extracted pulp comprising modified cellulose fibers for a moidable cellulose fiber based material. The invention further relates to a moidable cellulose fiber based material comprising at least 70% by dry weight of modified cellulose fibers obtainable by the method. La présente invention concerne un procédé de fabrication de fibres de cellulose modifiées pour un matériau à base de fibres de cellulose moulable, ledit procédé comprenant les étapes suivantes, consistant : a) à fournir une pâte de bois chimique ou semi-chimique comprenant des fibres de cellulose, et éventuellement soumettre la pâte à une extraction alcaline pour obtenir une pâte extraite alcaline ; et b) à soumettre la pulpe ou la pulpe extraite alcaline de l'étape a) à un traitement chimique avec une solution alcaline et/ou un solvant organique pour obtenir une pâte traitée ou une pâte extraite alcaline traitée comprenant des fibres de cellulose modifiées pour un matériau à base de fibres de cellulose moulable. L'invention concerne en outre un matériau à base de fibres de cellulose moulable comprenant au moins 70 % en poids sec de fibres de cellulose modifiées pouvant être obtenues par le procédé.