| 摘要 |
<p>PURPOSE:To provide a wall material and a ceiling material being lightweight and having sound insulation, moisture proofing and heat resistance. CONSTITUTION:Used paper 1 is cut into small pieces and is dispersed in water and 1% a water based-coloring agent 2, 6% a water-based adhesive 3 and 29% gypsum 4 are mixed to the mixture at an adequate ratio and the mixture is poured into a mold having a flat bottom or a mold engraved a pattern on the bottom and is dried.</p> |
