| 摘要 |
PROBLEM TO BE SOLVED: To provide a dew condensation preventing material capable of being produced in a simple processing, excellent in cost and dew condensation preventing property, suitable for farm materials, construction materials or the like. SOLUTION: This dew condensation preventing material obtained by adhering highly hygroscopic fine particles to a sheet like structure, has >=3 deg.C of maximum temperature rise in moisture uptake and/or water absorption, and sustains heat generation in the moisture uptake for >=30 min, and/or for >=1 min in the water absorption or >=8 deg.C of maximum temperature rise in water absorption. |
