| 摘要 |
PURPOSE:To improve heat resistance, water resistance, dimensional stability, and incombustibility by forming a metallic coated layer on the surface of a woody fiber board and, moreover, acetylating the woody fiber board as a basic material and, simultaneously, subjecting to an incombustible process. CONSTITUTION:Lumber chips are degreased and softened by steam boiling, and then opened so as to obtain woody fibers, and the woody fibers are made to heat-react while being immersed in acetic anhydride reaction liquid so that a hydroxyl group in the woody fibers is displaced with an acetyl group. In this fashion, an incombustible inorganic compound is filled, adhered or fixed to the cellular cavities of the woody fibers and/or wall surfaces within the cellular cavities and/or the outer surface of the woody fibers, wherein thus acetylated and incombustibly processed woody fibers and molded integrally by the use of an adhesive substance, with the result that a woody fiber mat is formed. The woody fiber mat is heat press-molded in order to form a woody fiber board, and then metal is flame-coated at least on one surface of the woody fiber board, and thereafter, a metal-coated layer is formed by cooling. |
