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1. (WO1997017177) PROCESS FOR MAKING WOOD CHIPS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/017177 International Application No.: PCT/SE1996/001398
Publication Date: 15.05.1997 International Filing Date: 31.10.1996
Chapter 2 Demand Filed: 02.04.1997
IPC:
B27L 11/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
L
REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
11
Manufacture of wood shavings, chips, powder, or the like; Tools therefor
Applicants:
STFI [SE/SE]; P.O. Box 5604 S-114 86 Stockholm, SE (AllExceptUS)
UHMEIER, Andreas [SE/SE]; SE (UsOnly)
Inventors:
UHMEIER, Andreas; SE
Agent:
ONN, Thorsten ; AB Stockholms Patentbyrå Zacco & Bruhn P.O. Box 23101 S-104 35 Stockholm, SE
Priority Data:
9503948-308.11.1995SE
Title (EN) PROCESS FOR MAKING WOOD CHIPS
(FR) PROCEDE DE PRODUCTION DE COPEAUX DE BOIS
Abstract:
(EN) 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.
(FR) 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.
Designated States: CA, NZ, SE, US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0859691US6003572CA2236988