Method of making lignocellulosic board

Details Method of making lignocellulosic board Method of making lignocellulosic board

D - Textiles, Paper

21

J

D21J 1/08 (2006.01) B27N 7/00 (2006.01) C04B 20/10 (2006.01) C04B 20/12 (2006.01) C04B 26/02 (2006.01) C08K 3/34 (2006.01) C08L 97/02 (2006.01) D21H 25/06 (2006.01) D21H 17/04 (2006.01) D21H 17/08 (2006.01) D21H 17/52 (2006.01) D21H 17/53 (2006.01)

Patent

CA 2288692

A method of manufacturing a finished product from a lignocellulosic material selected from the group consisting of lignocellulosic particles or fibres, soft boards, and board precursors in sheet form includes the steps of impregnating the lignocellulosic material with an impregnating composition consisting of a mineral oil and a liquid thermosetting resin, optionally with a catalyst therefor. Thereafter, the lignocellulosic material is compressed with heating to allow the mineral oil to infuse the lignocellulosic material and to polymerise the thermosetting resin to form the finished product.

L'invention a trait à un procédé de fabrication d'un produit fini à partir d'une substance lignocellulosique choisie parmi le groupe contenant des particules ou fibres lignocellulosiques, des planches molles, et des précurseurs de planches en forme de feuille. Ce procédé comporte les suivantes consistant à imprégner la substance lignocellulosique d'une composition d'imprégnation contenant une huile minérale et une résine thermodurcissable liquide, éventuellement accompagnée d'un catalyseur. Les particules de vermiculite expansée sont ensuite comprimées grâce à de la chaleur en vue que l'huile minérale pénètre dans lesdites particules et que la résine thermodurcissable se polymérise et ce, aux fins de former le produit fini.

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