Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Noninterengaged fiber-containing paper-free web or sheet...
Reexamination Certificate
2007-05-01
2007-05-01
Dye, Rena (Department: 1774)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Noninterengaged fiber-containing paper-free web or sheet...
C052S784110, C264S112000, C428S317900, C106S018120, C106S602000, C501S036000
Reexamination Certificate
active
10950550
ABSTRACT:
Disclosed is an incombustible composition for a fire door/wall, the fire door/wall using the incombustible composition, and a method of producing the fire door/wall. The incombustible composition includes 1 to 80 wt % of organic or inorganic fiber, 1 to 80 wt % of fly ash or bottom ash, 1 to 80 wt % of fire-proofing agent, 1 to 30 wt % of curing fire-retardant resin, and 1 to 40 wt % of incombustible hollow filler. Furthermore, the method includes providing the incombustible composition, mixing the fly ash or bottom ash, fire-proofing agent, and curing fire-retardant resin with each other, adding the organic or inorganic fiber into a mixture, shattering the mixture containing the organic or inorganic fiber, mixing an incombustible hollow body with the shattered mixture by use of a mixer using air, pressing the resulting mixture using a high pressure hot press to form a board or a square timber, constructing a frame of the fire door/wall using the board and/or square timber, and embedding an incombustible core material into the fire door/wall. As well, 1 to 70 wt % of the incombustible composition may be made of a waste material. Accordingly, the incombustible composition is advantageous in that the production costs are reduced, and that it is useful as a construction finishing and interior material because no fire and toxic gases occur when the incombustible composition is on fire.
REFERENCES:
patent: 4452635 (1984-06-01), Noshi et al.
patent: 4572862 (1986-02-01), Ellis
Choi Jun-Han
Lee Sang-Hoon
Yoon Byung-Ick
Arent & Fox LLP
Choi Jun-Han
Crouse Brett A
Dye Rena
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