Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1984-08-08
1987-04-28
Lesmes, George F.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
106104, 106105, 106106, 428246, 428248, 428252, 428703, 428920, 428921, C04B 732, C04B 900
Patent
active
046613986
ABSTRACT:
A novel method is presented for converting plywood, wall panelling, and laminated sheathing (doorskin, resin-impregnated paper generally termed "Mica", and other combinations of laminated wood and/or wood plastic products) used in construction, into a fire barrier which not only decreases the spread of flame along the surface, but prevents the penetration of flame into the interior of the product and through to the opposite side, and thus enables these products to function as a "fire-barrier" under ordinary fire conditions normally associated with home, apartment, commercial, industrial, ship/boat and aircraft fires.
The method consists of substituting a non-combustible, high temperature-resistant coating, which in itself has adequate adhesive properties to substitute for the presently used adhesives in the laminated wood and wood/plastic structures, for one or more of the adhesive layers, herein termed the internal or "submerged" coatings. The coating may be used alone, or in the form of an impregnated sheet of woven or non-woven fabric made from fiberglass, carbon, aramid ("Kevlar"), quartz, polyester, nylon, or other natural or synthetic or inorganic fibers. The impregnated fabric adds tensile strength and flexural modulus to the laminate and may be used as the bonding agent (adhesive) alone or in combination with the currently used adhesives (e.g. phenol-formaldehyde, urea formaldehyde, resorcinol, melamine, melamine urea, urea, etc.). The cited examples consist of a synergistic combination of two and three non-combustible inorganic bonding systems: viz. magnesium "oxychloride" or magnesium "oxysulphate" cements, along with high alumina calcium aluminate cement; and with or without colloidal silica. These non-combustible formulations are compatible with some of the currently used plywood phenolic, urea and resorcinol adhesives, and may be mixed together so that only one application and curing cycle is required and still imparts the fire-barrier properties inherent in the coating and coating laminate.
REFERENCES:
patent: 53092 (1866-03-01), Sorel
patent: 504211 (1893-08-01), Gallinowsky et al.
patent: 882774 (1908-03-01), Apfel et al.
patent: 1442089 (1921-10-01), Oosterhouse
patent: 1574862 (1926-03-01), Benson
patent: 1916971 (1933-07-01), Denning
patent: 1988125 (1935-01-01), Kidwell
patent: 2081935 (1937-06-01), Jones
patent: 2511904 (1950-06-01), Clasen et al.
patent: 3464543 (1969-09-01), Kwiatanowski et al.
patent: 3522069 (1970-07-01), Checko et al.
patent: 3573941 (1971-04-01), Edwards et al.
patent: 3719512 (1973-03-01), Danielis
patent: 3745031 (1973-07-01), Kaplin
patent: 3778304 (1973-12-01), Thompson
patent: 3811992 (1974-05-01), Handa
patent: 3857727 (1974-12-01), Benisek
patent: 3897387 (1975-07-01), O'Shaughnessy
patent: 3956538 (1976-05-01), Vartiak
patent: 3963849 (1976-06-01), Thompson
patent: 3973978 (1976-08-01), Nakagawa et al.
patent: 3996742 (1976-12-01), White et al.
patent: 4088804 (1978-05-01), Cornwell et al.
patent: 4107376 (1978-08-01), Ishikawa
patent: 4111711 (1978-09-01), Kiehl et al.
patent: 4158570 (1979-06-01), Irwin
patent: 4159302 (1979-06-01), Grene et al.
patent: 4185066 (1980-01-01), Temple
patent: 4209339 (1980-06-01), Smith-Johannsen
patent: 4255483 (1981-03-01), Byrd et al.
patent: 4312674 (1982-01-01), Stalego et al.
patent: 4352694 (1982-10-01), Smith-Johannsen
patent: 4353955 (1982-10-01), Cook
patent: 4371579 (1983-02-01), McCasley et al.
patent: 4410366 (1983-10-01), Birchall et al.
patent: 4462831 (1984-07-01), Raevsky et al.
patent: 4572862 (1986-02-01), Ellis
Chemical Abstracts (1981), European Search Report.
Atkinson William M.
Delphic Research Laboratories, Inc.
Lesmes George F.
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