| 摘要 |
PURPOSE: A yellow earth board which has improved soundproof, insulation, and hygroscopicity is provided. In addition, it emits fragrance and infrared rays and makes possible to produce in a large scale. CONSTITUTION: A yellow earth board is characterized by being produced by the following process comprised of: producing a mixture(A) of 75-90wt.% of yellow earth removed moisture, 6-10wt.% of yam powder, 3-8wt.% of rice hulls powder, 0.5-0.7wt.% of salt, 0.4-0.7wt.% of rice powder, and 0.1-0.2wt.% of edible soda; producing another mixture(B) of a paper mulberry, an elm, water soaked out from boiled seaweeds, and water glass mixed in a ratio of 15:10:9:3; kneading the mixture of A and B mixed in a regular ratio; making a yellow earth board by pouring the mixture into half a mold followed by putting 3-4pieces of Korean paper onto a mold; pouring the mixture into the top of the mold; and drying it in a shady spot.
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