| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a woody cement board having good dimensional stability and sufficient strength. SOLUTION: In this woody cement board, as its wood material, wood chips are produced from lumber subjected to steam heat treatment under pressure. Since any change in thickness and in length due to moisture absorption of the chips is inhibited from being caused, the objective woody cement board having good dimensional stability can be produced.</p> |
