Abstract: A thermal and acoustic insulating plate comprising an aminoplastic resin and a fiber reinforcement embedded therein in the form of a non-woven body of glass fibers extending uniformly throughout the entire volume of the plate. In preparing the plate a non-woven body of glass fibers is impregnated with aminoplastic resin, whereafter the resulting structure is expanded and cured in a mould by supplying heat energy thereto.

Abstract: A wood chip board the binder of which is an aminoplast, the amount of solid resin binder in the area of the surfaces of the board being less than 8% by weight of the chip material (absolutely dry) and the amount of solid resin binder in the area of the center of the board being equal or higher than in the area of the surfaces of the board as a percentage of the chip material in the center of the board. In preparing such a board the chip material providing the surfaces is advantageously glued with a liquor of an aminoplast the concentration of which is about 10 to 35% and preferably about 20 to 30%.