Patent ID: 6767421
Filing Date: 2004-07-27
Classification: B27N

Abstract:
A method of producing a panel-shaped product by hot pressing a multi-layered formed body of chips of at least one lignocellulose-containing annual plant impregnated with binder, whereby isocyanate is used as a binder for a middle layer material of the chips in a middle layer of the formed body, characterized in that:a cover layer material of the chips is separated into a cover layer material fine fraction (5a) and a cover layer material coarse fraction (5b), the cover layer material fine fraction (5a) is premixed with an adhesion promoter and/or a wetting agent and/or acids and/or bases, and next is glued with amino and/or phenolic plastics, the cover layer material coarse fraction (5b) is glued with isocyanate or mixtures of isocyanate and amino and/or phenolic plastics, and next the cover layer material fine fraction, the cover layer material coarse fraction, and the middle layer material are spread in respective layers to form the multi-layered formed body as a five-layered formed body, whereby outermost cover layers of the formed body consist of the cover layer material fine fraction that is glued with amino and/or phenolic plastics.