Method for reducing warp potential within lumber derived...

G - Physics – 01 – N

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G01N 33/46 (2006.01) B27B 31/00 (2006.01) B27B 31/06 (2006.01) B27B 1/00 (2006.01) G01N 29/07 (2006.01)

Patent

CA 2581427

Methods for reducing warp potential of lumber derived from a raw material, such as a log or stem are provided. The methods involve examining the log or stem for shrinkage properties and/or properties of spiral grain. The location of the shrinkage properties and/or properties of spiral grain determine how the log is oriented relative to a cutting device. In another embodiment, these characteristics determine what cutting pattern is selected for creating the lumber. In the case of a stem, these characteristics determine how the stem will be bucked.

Cette invention fournit des méthodes qui permettent de réduire le voilement du bois d'oeuvre provenant d'un matériau brut, comme un rondin ou un fût. Ces méthodes donnent lieu à l'examen du rondin ou du fût pour y déceler des propriétés de perte de volume et/ou des propriétés de fil tors. L'emplacement des propriétés de perte de volume et/ou des propriétés de fil tors déterminent l'orientation du rondin par rapport à un dispositif de coupe. Dans une autre version, ces caractéristiques déterminent le diagramme de coupe sélectionné pour obtenir le bois d'oeuvre désiré. Dans le cas d'un fût, ces caractéristiques déterminent la manière dont le fût sera arqué.

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