B - Operations – Transporting – 27 – L
Patent
B - Operations, Transporting
27
L
B27L 11/00 (2006.01)
Patent
CA 2236988
Process for the manufacturing of wood chips as raw material in the production of mechanical pulp in order to reduce the energy consumption in the production of pulp, characterized in that the wood fibres, including the summerwood fibres, are irreversibly deformed across the grain, i.e. in a direction perpendicular to the longitudinal axis of the fibres. Preferably this is done through mechanical treatment with one or several tools, arranged so that the forces created in the treatment act in a direction substantially perpendicular to the longitudinal axis of the fibres.
L'invention porte sur un procédé de production de copeaux de bois utilisés comme matière première dans la préparation de pâte mécanique et ce, afin de diminuer la consommation d'énergie dans la préparation de pâte. Ce procédé a ceci de particulier que les fibres de bois, y compris les fibres de bois d'été, sont déformées de manière irréversible en travers du fil, c'est à dire, perpendiculairement à leur axe longitudinal. Pour ce faire, on a recours à un traitement mécanique mettant en oeuvre un ou plusieurs outils, en prenant soin que les forces issues de ce traitement s'exercent dans une direction sensiblement perpendiculaire à l'axe longitudinal des fibres.
Ogilvy Renault
Stfi
LandOfFree
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