| 摘要 |
PURPOSE:To simplify a device and operation without the risk of color change towards brown and separation, while its noninflammable property is improved by a method in which the slurry containing inorganic hydraulic material, reinforcing fiber and inorganic colorant is scooped up by the second cylinder paper machine, and is brought in contact with the under surface of a green plate having been moved on a felt belt. CONSTITUTION:For instance, the slurry of 9.1wt.% of solid concentration, containing as the compounding rate for the solid, 80wt.% normal Portland cement, 18wt.% asbestos and 2wt.% pulp, is fed into the first cylinder paper machine with three cylinders and the green plate with 4mm thickness is made. The slurry in which e.g. 3wt.% red oxide is added into the slurry having been supplied into the first cylinder paper machine, is supplied into the second cylinder paper machine with one cylinder. While color cake is scooped up from the cylinder by the rotation of a felt belt, the green plate having been made by the first cylinder paper machine is moved onto the felt belt, and the color cake is brought in contact with the under surface of the green plate, thereby forming the laminate green plate with 5mm thickness. After the laminate green plate has been compressed e.g. under 45kgf/cm<2> pressure, it is cured naturally for three weeks and further is dried.
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