The production of a mat of wood chips and/or fibers, hereafter called wood particles, by a spreading station and a weighing device, is controlled in a closed loop circuit for uniformity, directly during the spreading of the wood particles. Several spreading devices form a spreading station. Electrical...http://www.google.com.au/patents/US4247497?utm_source=gb-gplus-sharePatent US4247497 - Method for producing a mat especially in the manufacture of particle boards
