Method for preparing fibrous material

Details Method for preparing fibrous material Method for preparing fibrous material

D - Textiles, Paper

21

D

D21D 1/20 (2006.01) D21H 23/16 (2006.01) D21H 17/70 (2006.01)

Patent

CA 2442804

The invention relates to a method for preparing fibrous material for producing paper or cardboard. Said method comprises the following steps: a) fibres are prepared in the form of a suspension having a pre-determinable concentration of solid matter, b) the fibres are loaded with a precipitation agent, without refining the material, c) the fibres are refined at the end of the loading process in order to increase the degree of refinement and/or to change the properties of the fibres, and d) the fibrous suspension treated according to steps a) to c) is guided in the direction of the paper machine.

L'invention concerne un procédé de préparation de matière fibreuse pour la fabrication de papier ou de carton. Ce procédé comprend les étapes suivantes : a) préparer des fibres sous la forme d'une suspension présentant une concentration en matières solides prédéfinissable, b) charger ces fibres d'un agent de précipitation, sans raffiner la matière, c) raffiner ces fibres lorsque le processus de chargement est terminé de manière à augmenter le degré de raffinage et/ou modifier les caractéristiques des fibres puis d) faire avancer la suspension de matière fibreuse, traitée selon les étapes a) à c), en direction de la machine à papier.

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