Low density oriented strand board

B - Operations – Transporting – 27 – N

Patent

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Details

B27N 3/04 (2006.01) B27N 3/18 (2006.01)

Patent

CA 2456875

A low density oriented strand board has an average density of less than about 1.5 times the density of wood species used in the board and a homogenous vertical density profile. Low density OSB may be formed by preheating the wood finish prior to pressing, controlling the moisture content such that the core layer has a higher moisture content than the face layers, or a combination of pre-heating and moisture content control.

Selon l'invention, un panneau à copeaux orientés OSB faible densité a une densité moyenne environ 1,5 fois inférieure à celle des espèces de bois utilisés dans les panneaux ainsi qu'un profil de densité vertical. Le panneau OSB faible densité peut être formé par préchauffage du bois fini avant le pressage, par la régulation de la teneur en humidité de manière à ce que la couche de noyau ait une teneur en humidité plus élevée que les couches de face ou par la combinaison du préchauffage et de la régulation de la teneur en humidité.

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