B - Operations – Transporting – 27 – N
Patent
B - Operations, Transporting
27
N
B27N 3/08 (2006.01) B27N 3/18 (2006.01) B27N 3/20 (2006.01)
Patent
CA 2272884
A method and apparatus are disclosed for making a reconsolidated or reconstituted wood product from a charge of wood components and binder using steam injection pressing to consolidate and bind the charge into a mat in which the wood components are bound to each other to form the wood product. The charge is compressed into the mat by operation of at least the one pressing member in the form of a heated movable platen. The method and apparatus are characterized by the pressure being applied to the charge or mat from the steam injection pressing being independent of the compressing force applied to the charge or mat by the pressing member. The invention is particularly adapted to form beams of relatively large cross section, such as for example in excess of 30 mm, preferably larger than 40 mm.
L'invention a trait à un appareil et à un procédé de production d'articles en bois consolidé ou reconstitué et ce, à partir d'une charge d'éléments en bois et d'un liant pressés sous injection de vapeur, afin de consolider et de lier ladite charge, ce qui permet de constituer un matte dans lequel les éléments en bois sont liés les uns aux autres et donnent l'article en bois. La charge est comprimée en matte à l'aide d'au moins un organe de pressage sous forme de table mobile chauffée. Le procédé et l'appareil correspondant se caractérisent par le fait que la pression appliquée à la charge ou au matte par pressage sous injection de vapeur est indépendante de la force de compression appliquée à la charge ou au matte à l'aide de l'organe de pressage. Cette invention convient tout particulièrement à la constitution de poutres de section transversale relativement importante, dépassant par exemple 30 mm, 40 mm de préférence.
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Commonwealth Scientific And Industrial Research Organisation
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