PROBLEM TO BE SOLVED: To provide a deodorization filter medium excellent in peeling strength and rigidity, reduced in the falling of an adsorbent and excellent in pleat workability.SOLUTION: Provided is a deodorization filter medium in which a granular adsorbent whose weight is 10 to 150 g/m2 and a binder are held between base material layers. In the granular adsorbent, an aldehyde adsorbent is fixed, the base material layers and the binder are made of the same component, as the binder, the granular one with the average particle diameter of 100 to 300 μm is used, and regarding the average particle diameter of the granular adsorbent, the ratio to the average particle diameter of the binder is 1 to 3.3.SELECTED DRAWING: NoneCOPYRIGHT: (C)2018,JPO&INPIT【課題】剥離強度と剛性に優れ、吸着材の脱落が少なく、プリーツ加工性に優れた脱臭濾材を提供する。【解決手段】本発明の脱臭濾材は、基材層間に、重量10~150g/m2の粒状吸着材とバインダーとが挟持された濾材であって、前記粒状吸着材にはアルデヒド吸着剤が固定化されており、前記基材層と前記バインダーとは、同一の成分から成り、前記バインダーは、平均粒径が100μm以上300μm以下の粒状のものが用いられ、前記粒状吸着材の平均粒径は、前記バインダーの平均粒径に対する比が1以上3.3以下である。【選択図】なし
