| 摘要 |
PROBLEM TO BE SOLVED: To obtain a composite cured product which has excellent processability and excellent productivity and is suitable as a core material for building materials by mixing an inorganic amorphous material with a fibrous substance, impregnating the mixture with a resin and then heating and compressing the resin-impregnated product. SOLUTION: A plate-like composite cured product 1 where a substance 3 is contained in an inorganic amorphous substance 2 is obtained by adding a metal alkoxide or metal hydroxide to a sludge for making paper, subjecting the mixture to a hydrolysis reaction or the like in the presence of an acid or an alkali to form a gel, carrying the gel with a conveyer, simultaneously pressing the carried gel with rolls to form a sheet, impregnating a part or all parts of the sheet with a resin, and then heating and compressing the sheet. A decorated plate or the like is laminated to the composite cured product 1 as a core material to form a composite building material suitable as an external building material.
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