Belt-type particleboard press with flexible upper platen

Abstract From the Canadian patent

A belt-type press for making particleboard has a longitudinal row of transverse frames through which pass upper and lower longitudinally extending press beams extending along and carried on the row of frames flanking respective heated press platens in turn flanking stretches of respective upper and lower belts driven to move a mat of particles to be pressed along the path in a transport direction. The upper beam is pressed down by a plurality of substantially identical hydraulic actuators to compress the mat between the belts with a relatively high pressure in an upstream compression region of the press and with a relatively low pressure in a downstream compression region of the press. The …