| 摘要 |
PROBLEM TO BE SOLVED: To obtain a filter medium excellent in VOC absorption performance. ! SOLUTION: Inventors have found as a result of examination that a filter medium effectively exhibits the VOC absorption performance of the filter medium comprising a nonwoven cloth with a filter medium that is particles having average particle diameters of 1 μm or less carried by a binder when a mass ratio of the absorbent that the filter medium comprises to the binder is in a range of 93 mass%: 7 mass% - 99.5 mass%: 0.5 mass %. The reason of the same is not completely clear, but is supposedly that the filter medium of this invention is a filter medium constituted by coating the surface of the filter medium with an excess of the binder to obstruct the VOC absorption performance of the absorbent and by preventing the absorbent from easily scaling off from the absorbent by a shortage of the binder. ! COPYRIGHT: (C)2015,JPO&INPIT |
