PROCESS AND INSTALLATION FOR MANUFACTURE OF PARTICLE BOARD AND FIBER BOARD PANELS
Canada Patent
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Abstract
The present invention is directed to a method of manufacturing particle boar d and other fiber board panels of improved structural quality. A known manufacturing method is improved by utilizing at least one endless metal mesh belt which is made fro m a material with significantly higher thermal conductivity than, but with coefficient of thermal expansion roughly similar to the steel belt. In the method the steel belt an d the metal mesh belt are led back together through an insulating tunnel to prevent heat loss. The metal mesh upstream of the infeed into the press area is led to a heating tunnel separate and apart from the steel belt and is heated to a higher temperature differen ce from the steel belt of at least 40.degree.C and the specific press pressure acting on the furnish mat during the first 80% to 90% of the press time in the continuously operating press i s never below 0.3N/mm2.
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