| 摘要 |
PROBLEM TO BE SOLVED: To provide an efficient manufacturing method of a natural fiber board reduced in dimensional irregularity accompanied by moisture absorbing irregularity or dimensional change accompanied by moisture absorption/release. SOLUTION: The manufacturing method of the natural fiber board contains a process for ageing a board containing a natural fiber under a reduced pressure atmosphere adjusted to a relative humidity of 50-100% and pressure of -20 kPa or lower. COPYRIGHT: (C)2009,JPO&INPIT
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