| 摘要 |
[Problem] To provide a filtering medium for a deodorizing filter, with which satisfactory deodorizing capability can be attained while increasing adhesion and rigidity, and which excels in terms of pressure loss and dust-holding capacity. [Solution] A filtering medium comprising a laminated structure in which an adsorbing layer, which comprises an adsorbent and an adhesive, is sandwiched between base material layers, wherein at least one of the base material layers is a laminate sheet in which a needle-punched electret nonwoven fabric and a nonwoven fabric composed of thermal-bonding long fibers have laminated and unified by needle punching, and is laminated such that the adsorbing layer and the nonwoven fabric composed of thermal-bonding long fibers of the laminate sheet are adjacent. |
