| 摘要 |
PROBLEM TO BE SOLVED: To provide a clay for technical art used for the soft, mellow demonstration and provided with the good color matching by utilizing thrown-away waste shells, processing the same into the clay used for teaching aids or the technical art, adding characteristics of processing with detailed workmanship and demonstration and providing the easy handling for all through from beginners to higher grade people. SOLUTION: The clay for technical art basically contains a paste agent composed of a vinyl acetate resin of 25-30 wt.% to a shell powder of 30-40 wt.%, a filler containing a talc of 6-10 wt.% and a pulp of 1.5-2.0 wt.% and water of 30-35 wt.%, and titanium, a tocopherol and the like are added therein to increase the characteristics essential for the clay for technical art.
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