To raise the strength of a floor material, and improve workability as well as lightweight and fire resistance by furnishing a reinforcement layer consisting of a thermosetting resin and an inorganic fiber on at least one surface of a porous inorganic core material.
The fire resistant composite floor material 100 consists of a thermosetting resin 1 and an inorganic fiber 2 with superior workability; moreover, has a high strength reinforcement layer 4 formed on the surface of a porous inorganic core material 3 in order to avoid damaging when pulling force is applied thereon. The reinforcement layer 4 can be formed on only one surface of the porous inorganic core material 3 or both the surface of the porous inorganic core material 3. The thermosetting resin 1 can preferably include a phenol resin, melamine resin, epoxy resin, polyimide resin, urea resin, or the like. The inorganic fiber 2 can desirably include a glass fiber, rockwool, and a ceramic fiber. A content of the thermosetting resin contained in the reinforcement layer 4 is preferable to be 10 wt.%-65 wt.%.
OGAWA TETSUJI
SATO KENJI
NISHIMURA TETSUYA
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