B - Operations – Transporting – 65 – G
Patent
B - Operations, Transporting
65
G
154/1, 154/97
B65G 47/19 (2006.01) B27N 3/14 (2006.01)
Patent
CA 1172151
Abstract A method and apparatus are disclosed for (1) forming a mat of lignocellulosic particles electrostatically aligned in a cross-machine direction to the direction of movement of the mat being formed, and (2) forming a composite panel having a core layer of particles electrostatically aligned in the cross- machine dimension and face layers of particles electrostatically aligned in the machine direction. The multilayered mat of electrostatically aligned particles employs separate orientation cells (30,32) for aligning the particles in the machine and cross-machine directions. For aligning the particles in the cross-machine direction, a uniformly distributed array of par- ticles is passed through spaced, charged plates of d high-volt- age electrostatic orienting field having electrical lines of force extending substantially transverse to the direction of movement of the mat being formed. The spaced, charged plates are preferably configured to spread the effects of particle migration and the shadow effect over the area of the orientation to minimize basis weight variation. Also disclosed is a nosepiece (104) for the transfer conveyor which has a plurality of conductive elements (106) em- bedded in it extending parallel to the direction of movement of the transfer belt.
384935
Henckel David J.
Peters Thomas E.
Frayne & Company Robert
Morrison-Knudsen Forest Products Company Inc.
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