Method of forming a mat for making particleboard

摘要

A mat of elongated particles is formed on a horizontal and horizontally displaceable conveyor by a spreading head having an array of parallel interdigitated disks forming longitudinally elongated spaces and rotatable about a coplanar axis above the conveyor. The conveyor is continuously displaced in a longitudinal transport direction and generally perpendicular to these axes underneath the spreading head. Elongated particles are fed onto the array of disks while these disks are rotated so that the particles are deposited onto the conveyor as a mat having underneath the array a generally planar upper mat surface forming with the conveyor a deposition angle. The array is supported so that the plane of its axes lies in an acute angle to the upper mat surface. The array is so much closer to the upper surface at its upstream portion than at its downstream portion so that the particles are deposited on the conveyor generally parallel to the longitudinal transport direction underneath the upstream portion and generally randomly underneath the downstream portion.