| 摘要 |
PROBLEM TO BE SOLVED: To provide an environment adaptive board-like heat insulator which is excellent in humidity conditioning properties, free from provision of an adhesive for retaining the shape, small in consolidation settlement, and good in ventilation performance. SOLUTION: The environment adaptive board-like heat insulator 1 which is available by being filled in a wall, a ceiling, or an underfloor of a detached house or an apartment house, is prepared by using only wool 11 that is made of natural fibers excellent in humidity conditioning properties, and polylactic fibers 12, 13 having high biodegradability. Specifically the environment adaptive board-like heat insulator 1 is manufactured by preparing a nonwoven laminated body containing the wool of 50 to 80 wt.%, high-melting polylactic fibers having a melting point of not lower than 150°C, of 15 to 35 wt.%, and low-melting polylactic fibers having a melting point of not higher than 120°C, of 5 to 25 wt.%, and then subjecting the resultant nonwoven laminated body to heat seal treatment at a temperature of 130 to 140°C. COPYRIGHT: (C)2009,JPO&INPIT
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