| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to prevent the dissipation of design layers which are formed to distribute unevenly on the surface of an inorg. plate by using a coating material contg. a specific ratio of inorg. pigments and forming a protective layer on these design layers. SOLUTION: This decorative plate is obtd. by forming a waterproof sealer layer 4 on the front surface of the inorg. plate 1, forming a ground surface layer 5 on its front surface, partially forming the design layers 2 thereon so as to distribute unevenly by using the coating material contg. 60 to 90 wt.% inorg. pigments and coating the surfaces of the design layers 2 and the ground surface layer 5 with the protective layer 3. The inorg. plate 1 is obtd. by molding a cement compsn. formed by dispersing solid contents contg. cement, silica component, reinforcing fibers, etc., into water, to a planar form and curing and hardening the molding. The design layers 2 are the layers of 3 to 10μm in thickness formed by applying the coating material, which is prepd. by compounding the inorg. pigments selected from titanium oxide, iron oxide, cobalt oxide, etc., with a base coating material, such as acrylic emulsion coating material, etc., on the ground surface layer and drying the coating. The protective layer 5 is a clear coating material and is a resin coating material layer of 5 to 20μm in thickness which assures the adhesion property to the ground surface layer 5 and the design layers 2.
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