MULTILAYER LIGHTWEIGHT WOODBASE MATERIALS COMPOSED OF LIGNOCELLULOSIC MATERIALS HAVING A CORE AND TWO OUTER LAYERS WITH TREATED PULP, TREATED NATURAL FIBERS, SYNTHETIC FIBERS OR MIXTURES THEREOF IN THE CORE

摘要

The present invention relates to;lignocellulosic materials having a core and two outer layers, comprising, preferably consisting of, in the coreA) 30 to 98% by weight of lignocellulose particles,B) 0 to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 150 kg/m³,C) 1 to 50% by weight of one or more binders selected from the group consisting of aminoplast resin, phenol-formaldehyde resin, and organic isocyanate having at least two isocyanate groups, andD) 0 to 10% by weight of additivesand in the outer layersE) 70 to 99% by weight of lignocellulosic particles, fibers or mixtures thereof,F) 1 to 30% by weight of one or more binders selected from the group consisting of aminoplast resin, phenol-formaldehyde resin, and organic isocyanate having at least two isocyanate groups, andG) 0 to 10% by weight of additivesin which 2% to 30% of the lignocellulose particles A) have been replaced by treated pulps, treated natural fibers, synthetic fibers or mixtures thereof, and also relates to their production and their use.