Process and apparatus for the continuous production of gypsum fiber plates in which the fiber component is dewatered and rediluted with water recovered from the gypsum-fiber suspension after it has been spread on a belt, passed over at least two suction boxes and densified on the last suction box by...http://www.google.com/patents/US5520779?utm_source=gb-gplus-sharePatent US5520779 - Process and apparatus for producing fiber-reinforced plaster plates
