Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1982-09-22
1984-10-30
Bell, James J.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
264 25, 264109, 264122, 427 57, 427212, 428283, 428326, 428920, B06B 300
Patent
active
044799128
ABSTRACT:
A fiber board composition and a fiber board composite formed therefrom is capable of consolidation into a variety of structural building products ranging from flat sheets and panels which may interlock for modular housing to 2.times.4's through 2.times.12's, etc. Fiber boards comprised of the fiber board composition of the present invention are characterized by high strength, fire resistance, water resistance and insect and rot resistance. The fiber board composition comprises lignocellulosic particles, such as softwood or hardwood waste particles, which have been pressure treated to resist insects and rot with a chemical compound, such as chromated copper arsenate, before board consolidation; a vegetable matter derivative for increased strength, such as hominy feed; a fire retardant chemical, such as alumina tri-hydrate; and a water retardant chemical, such as casco wax, which are then consolidated into the formed fiber board structure by means of about 4 to about 10% by weight of a phenolic-type resin, pressures of about 400 to about 600 psi, heat of about 320.degree. to about 360.degree. F. and ultrasonic sound with a frequency of about 3.6 to 3.7 mega hertz (million cycles per second). The amount of chemicals and/or other components to be added to the composite mixture will vary according to the desired result in each of the specified categories characterized by strength, fire resistance, water resistance and insect and rot resistance.
REFERENCES:
patent: 3880975 (1975-04-01), Lundmark
patent: 3916059 (1975-10-01), Molloy et al.
patent: 4110397 (1978-08-01), Wooler
patent: 4127636 (1978-11-01), Flanders
Bell James J.
Eggan Bernadine A.
Jacobson Harvey B.
Mize David L.
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