Wood/plastic composites, their production and use

Details Wood/plastic composites, their production and use Wood/plastic composites, their production and use

B - Operations, Transporting

27

N

B27N 3/00 (2006.01)

Patent

CA 2244005

The description relates to a polymer timber moulding based on timber particles and/or cellulose-containing material and at least one binder, in which the binder is a carbon dioxide-separating two-component polyurethane binder of a polyol, water and a polyisocyanate. The binder is present in a quantity of 10 to 200 parts by weight in relation to 100 parts by weight of the timber particles and/or the cellulose-containing materials, where the polymer timber moulding is obtained by reacting the timber particles and/or cellulose-containing material and the binder at a pressure of at least 1 kp/cm2 and especially 50 to 100 kp/cm2.

L'invention concerne un corps moulé en composite bois-polymère, à base de particules de bois et/ou d'un matériau contenant de la cellulose ainsi qu'au moins un liant, le liant étant un liant polyuréthane à deux composants qui dissocie l'anhydride carbonique et qui est composé d'un polyol, d'eau et d'un polyisocyanate. L'invention est caratérisée en ce que le liant représente une quantité comprise entre 10 et 200 parties en poids par rapport à 100 parties en poids de particules de bois et/ou du matériau contenant de la cellulose. Le corps moulé en composite bois-polymère est obtenu par réaction des particules de bois et/ou du matériau cellulosique et du liant à une pression d'au moins 1 kp/cm<2>, notamment comprise entre 50 kp/cm<2> et 100 kp/cm<2>.

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