| 摘要 |
PURPOSE:To have excellent dimensional stability and thus restrain expansion and contraction accompanied by moisture absorption and water absorption by making an acetylated woody fibrous board a basic board and then forming a metallic coated film layer by a flame coating method on at least one surface of the basic board. CONSTITUTION:Woody fibers are dried by means of a dryer and acetylated thereafter. The acetylated woody fibers are placed in a blending device and applied and mixed with an adhesive agent, sizing agent or the like so as to adhere thereto, in the next place, the woody fibers are sent by air so that a continuous woody fiber mat having regular thickness is formed on a transportation device by means of a forming device. The woody fiber mat obtained is cut at a constant length, following this, it is inserted into a hot press for being subjected to heat press molding, with the result that a woody fiber board is obtained, in which the gravity is in the range of 0.4-1.2. And, the woody fiber board obtained is cured and the surface thereof is sanded as required, and thereafter, necessary molten metal is sprayed and then flame-coating is executed therefor by the use of a flame coating device. Such metallic flame coating is conducted not limiting only to the surface of the woody fiber board, but also to necessary parts of the rear surface, end grain surface or the like, or covering the entire thereof. |
