Process for preparing flat articles which have been moulded into any desired shape and which are based on defibrated components of wood

Abstract From the Canadian patent

The invention relates to a process for preparing generally flat articles which are moulded and shaped in dry mouldsfrom defibrated components of wood. In this process, the moisture required to give good felting remains a constituent of the wood fibres until the moulding stage. These wood fibres are mixed with fibre- and/or moisture-reactive binders and if appropriate, auxiliaries, then metered by means of a gravity-compensating air stream onto a preform sieve, the preform being then compression-moulded without a cooling cycle in sieve-free moulds having surfaces which are smooth or embossed in any desired pattern, the novel method permitting improved preforms without high levels of binder …