| 摘要 |
The soil composition of this invention is comprised of a mixture of sand, clay, a plasticizer material, water, and a coloring pigment, if desired. The components of the soil composition are preferably present in the following proportions by weight: sand 50-70%; clay 10-40%; plasticizer 0.5-5.0%; water 5-20%; and coloring pigment 1-5%. The method of making the invention involves continuously mixing a portion of the sand and the plasticizer in an agitation mixer. The same becomes coated with the plasticizer, whereupon a quantity of clay is then added, followed by an additional portion of the plasticizer material It is particularly important that the sand particles become coated with the plastizing compound and clay. The coloring pigments are added and mixed thereafter. As soon as complete mixing takes place, material can be immediately transferred from the mixer to suitable packaging.
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