B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
B27N 3/00 (2006.01) B27N 3/08 (2006.01) B27N 3/18 (2006.01) B27N 3/24 (2006.01)
Patent
CA 2179503
A method of continuous manufacture of board of lignocellulosic fiber material where the material is disintegrated to particles and/or fibers, dried, glued and formed to a mat and pressed to a finished board. In a first step the formed mat is heated through by steam and compressed to an at least partially hardened board with substantially uniform density. In a second step the surface layers of the board are compressed to higher density and hardened in a calibration zone to a finished board.
On décrit un procédé de fabrication continue de panneaux en matériau fibreux lignocellulosique, dans lequel le matériau est réduit en particules et/ou en fibres, séché, collé, mis en forme de mat et comprimé pour obtenir un panneau. Dans une première étape, le mat ainsi formé est chauffé par un flux de vapeur le traversant et comprimé pour former un panneau au moins partiellement durci et de densité uniforme. Dans une deuxième étape, les couches superficielles du panneau sont comprimées afin d'acquérir une densité supérieure et durcies dans une zone de calibrage en vue d'obtenir le produit fini.
Lundgren Goran
Schedin Kurt
Sislegard Lars-Otto
Thorbjornsson Sven-Ingvar
Fetherstonhaugh & Co.
Sunds Defibrator Industries Ab
Valmet Fibertech Aktiebolag
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