Patent ID: 6439113
Filing Date: 2002-08-27
Classification: B27N,B30B

Abstract:
A method of pressing a compressible mat for producing pressed board in a continuous press wherein the continuous press comprises a pair of elastic bendable heated inlet plates between an upper and a lower press palten, a pair of belts displaceable along said plates, the plates and the belts forming an intake mouth having a contour controllable by a plurality of piston and cylinder units positioned to act on at least one of said plates for altering a configuration of a gap between said plates, said method comprising;feeding a compressible mat through said intake mouth and entraining said mat between said platens with said belt; controlling said gap with said piston and cylinder units at an inlet phase of the respective mat and at an inlet portion of said mouth to rapidly and strongly compress said mat and accelerate heat transfer to said mat to a temperature prior to passage of said mat between said platens; and compressing the mat a nominal thickness at said inlet portion for a predetermined compression phase and thereafter expanding the mat by enlarging a portion of said gap to produce a decompression in the mat before said mat passes between the platens.