PROBLEM TO BE SOLVED: To provide an air cleaning filter medium excellent in pleat processability even at a low temperature and in dust collection performance and aldehyde deodorization performance.SOLUTION: An air cleaning filter medium is characterized: in that active charcoal, to which a medicine containing an amino group is added, and cover layers arranged on the upstream side and the downstream side of the active charcoal are fixed by a thermoplastic resin and in that an upstream cover layer is made of a resin bond nonwoven fabric whereas a downstream cover layer is made of an electret nonwoven fabric having less fiber diameter than that of the upstream cover layer.COPYRIGHT: (C)2015,JPO&INPIT【課題】低温においてもプリーツ加工性に優れ集塵性能とアルデヒド類の脱臭性能に優れた空気清浄用濾材を提供する。【解決手段】アミノ基を含有する薬剤が添着された活性炭とその上流側と下流側に配置されたカバー層が熱可塑性樹脂によって固着されてなる空気清浄用濾材であって、上流側カバー層がレジンボンド不織布からなり、下流側カバー層が上流側カバー層より繊維径の小さいエレクトレット不織布からなることを特徴とする空気清浄用濾材。【選択図】なし
