Apparatus for the continuous production of chipboard, fibreboard and like panels

Apparatus for the continuous production of panels of uniform weight and thickness over their entire width from compacted material, comprising a tensioned endless steel belt, drive means for moving said belt longitudinally, means for heating and cooling said belt to control the tension in said belt, a plurality of rollers, a revolvable press drum, an outer shell for said drum, said belt being guided over said rollers and partially around said drum such that said rollers press said belt against said drum, heating means for said drum, and sprinkler apparatus disposed over a portion of said belt which extends horizontally before said drum in the direction of movement of said belt;

• said belt, said rollers said drum, and said sprinkler apparatus being relatively so disposed that material to form said panels sprinkled onto said portion of said belt is pressed between said belt and said drum to form a web of material, at least one of said plurality of rollers having over its width a convexly ground surface, the degree of convexity of said roller being determined by the degree of buckling deformation of said shell of said drum experienced in operation and by the inherent flexion of said roller when loaded having regard to the elasticity modulus of the material from which said roller is formed.