Method for treatment of wood

B - Operations – Transporting – 27 – M

Patent

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B27M 1/02 (2006.01) B27K 3/08 (2006.01) B27K 5/06 (2006.01)

Patent

CA 2237070

A method for treatment of one or more wood elements (4) by pressurization comprises the steps of embedding the wood elements into a pressure medium (8), of increasing the pressure in the pressure medium, whereby the wood element is compressed by transmitting the pressure via the pressure medium to the wood elements, and of reducing the pressure in the pressure medium, whereby the wood element is relieved. During the treatment, liquid present in the wood elements (4) is driven out therefrom. The pressure medium (8) comprises a plurality of solid bodies with intermediate spaces. The solid bodies transmit the pressure to the wood elements such that a pressure difference arises between the wood elements and said spaces, which pressure difference drives out the liquid. During the relief phase, the wood elements substantially resume their original shape. The method can also be used for introducing impregnating liquid into the wood elements after the liquid expulsion.

Procédé et traitement d'un ou plusieurs éléments en bois (4) par pressurisation, ce procédé consistant à placer ces éléments en bois (4) dans un milieu sous pression (8) et à augmenter la pression de ce milieu de pression, l'élément en bois étant alors comprimé par la pression transmise par le milieu de pression, puis à réduire la pression dans ledit milieu, l'élément en bois étant alors dégagé. Au cours du traitement, le liquide présent dans les éléments en bois (4) est expulsé. Le milieu de pression (8) comprend un pluralité de corps solides pourvus d'espaces intermédiaires. Ces corps solides transmettent la pression aux éléments en bois de sorte qu'une différence de pression monte entre les éléments en bois et les espaces et expulse le liquide. Au cours de la phase de dégagement, les éléments en bois reprennent sensiblement leur forme d'origine. Ce procédé peut également être utilisé pour introduire le liquide d'imprégnation dans les éléments en bois après l'expulsion du liquide.

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