Waferboard lumber

Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...

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428 15, 428218, 428326, 428528, 428529, 428535, 156 622, B32B 516

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047511311

ABSTRACT:
Substitute lumber pieces having strengths and densities substantially equivalent to lumber are cut from single layer panels of over about 1 and normally less than 4 inches thickness made from wood wafers. The wafers are oriented with their lengths having a mean deviation to the longitudinal length of the panel measured in the major plane of the panel in the range of 0 to 10 degrees and a mean deviation measured in a minimum longitudinal plane perpendicular to the major plane from 0 to about 5 degrees and have an average effective length of at least 8 inches (200 mm), and preferably an average thickness less than 0.15 inches (4 mm) and a width of at least 0.25 inches (6 mm). Lumber is made by cutting the panel longitudinally. Preferably the panels are formed to have a substantially uniform density profile throughout their thicknesses.

REFERENCES:
patent: 3164511 (1965-01-01), Elmendorf
patent: 3956555 (1976-05-01), McKean
patent: 4061819 (1977-12-01), Barnes
patent: 4122236 (1978-10-01), Holman
patent: 4241133 (1980-12-01), Lund et al.
patent: 4384019 (1983-05-01), Haataja
patent: 4404252 (1983-09-01), Hetzler et al.
patent: 4492726 (1985-01-01), Rosenberg
patent: 4610913 (1986-09-01), Barnes
Stofko, J., "The Effect of Molding Pressure on the Physical and Mechanical Properties of a Material Manufactured from Long Oriented Wood Elements", Drevarsky Vyskum 2, no. 1; 81-102 (1957) (translation).
Stofko, J., "The Relation Between the Dimensions and Geometry of Wood Particles and the Mechanical Properties of Wood Particle Boards", Drevarsky Vyskum 5, No. 2: 241-261 (1960) (translation).
Stofko, J., "Particle Board with Oriented Particles", Drevarsky Vyskum, 2, 127-148, (1962) (translation).
Stofko, J., "Particle Board with Oriented Particles", Druna Industrija 21(6), 104-107, (1970) (translation).

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