| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing a gypsum board which shows superior strength and presentable appearance by preventing the release of a gypsum core from a base paper for the board from occurring even when a large irregular pattern is formed. SOLUTION: A slurry obtained by kneading a material for the gypsum core 11 with water is cast into a gap between the base papers 12 for the board which form the face and back of the gypsum board 10. After that, in a process in which the slurry is cured, a plate die P traveling in accordance with the velocity of a belt conveyor is pressed. Since the gypsum board 10 is patterned by the plate die P in a process in which the chemical reaction of a gypsum dihydrate contained in the slurry is not in full progress, a desired profoundly irregular pattern 13 is obtained. In addition, the gypsum core 11 and the base paper 12 are not separated from each other at a spot where the irregular pattern 13 is formed by forming the irregular pattern 13. COPYRIGHT: (C)2004,JPO
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