B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
18/1010, 154/70.
B32B 21/10 (2006.01) B27N 5/00 (2006.01) E04C 3/14 (2006.01) E04C 3/28 (2006.01)
Patent
CA 1048391
REINFORCED BOARD MADE FROM LIGNOCELLULOSIC PARTICLES Abstract of the Disclosure A reinforced board manufacturing process and product whereby a compressed uniform mixture of comminuted lignocellulosic particles, binder and other additives has a plurality of elongate reinforcing filaments having substantially greater tensile strength and modulus of elasticity than the mixture, embedded therein and bound to the particles by the binder. For some board applications, the reinforcing filaments comprise a plurality of short filaments, exemplarily glass fibers or steel wires, of about one-quarter to one and one-half inches in length distributed uniformly throughout the particle and binder mixture in a random orientation so as to extend generally in all directions. For board applications having greater flexural strength and stiffness requirements, the reinforcing filaments comprise a series of long filaments specifically oriented straightly in a predetermined direction corresponding to the direction of expected tensile stress and in a parallel arrangement spaced transversely from one another. The distribution of such long filaments is normally not uniform throughout the board, but rather concentrated in certain areas where greatest flexural strength and stiffness is needed. A combination of short and long reinforcing filaments embedded in the board is preferred for many applications.
220255
Flanders Robert D.
Na
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