Dimensionally stable oriented strand board (osb) and method...

Details Dimensionally stable oriented strand board (osb) and method... Dimensionally stable oriented strand board (osb) and method...

B - Operations, Transporting

27

N

B27N 7/00 (2006.01) B32B 21/02 (2006.01)

Patent

CA 2324108

The present invention is concerned with a method for obtaining a wood panel, preferably an OSB panel, with significantly reduced thickness swelling properties when exposed to or contacted with moisture or water. The novel dimensionally stable panels are obtained by an alternate vacuum - steam injection method. The method is an after- fabrication, or post-treatment method, and involves one or more cycles of applying a vacuum followed by injection of hot steam in a sealed treatment chamber.

La présente invention se rapporte à un procédé permettant de fabriquer un panneau en bois, de préférence un panneau structural orienté, qui manifeste des propriétés de renflement à épaisseur réduite lorsqu'il est exposé au contact de l'eau ou de l'humidité. Ces nouveaux panneaux à stabilité dimensionnelle sont obtenus par le procédé d'injection en alternance de vide-vapeur. Le procédé de l'invention s'applique au stade qui suit la fabrication ou le traitement et nécessite un ou plusieurs cycles d'application de vide suivis par l'injection de la vapeur dans une chambre de traitement étanche.

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