Method of producing panel-shaped products

Details Method of producing panel-shaped products Method of producing panel-shaped products

B - Operations, Transporting

27

N

B27N 3/00 (2006.01)

Patent

CA 2362720

In a method of producing panel-shaped products by hot pressing a formed multi-layered body of lignocellulose-containing chips impregnated with binder, different binders are used in the middle layer and in the cover layers arranged on both sides of the middle layer, the cover layers consist of chips of wood or other raw materials based on wood impregnated. with a binder including amino and/or phenolic plastics, and the middle layer consists of a mixture of chips of lignocellulose-containing annual plants and chips of wood or other raw materials based on wood impregnated with a binder including an isocyanate.

Cette invention concerne un procédé de fabrication de produits sous forme de plaques, par pressage à chaud d'une pièce brute moulée, multicouche, contenant des liants, faite de copeaux contenant de la lignocellulose. La couche centrale et les couches extérieures contiennent différents liants et les couches extérieures, situées de part et d'autre de la couche centrale, sont constituées d'un matériau contenant des aminoplastes et/ou des phénoplastes, à savoir du bois ou d'autres matières premières à base de bois. Ledit procédé doit pouvoir être mis en oeuvre en fonction de la disponibilité des matières premières. Pour cela la couche centrale est constituée d'un matériau contenant des liants, fait de plantes annuelles contenant de la lignocellulose, ou de mélanges de matériau contenant des liants, fait de plantes annuelles contenant de la lignocellulose, et de bois ou d'autres matières premières à base de bois.

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