PROBLEM TO BE SOLVED: To restrain the deformation of a filter because of excelling in water permeability while exhibiting antimicrobial, mildewproofing, deodorizing and flame resisting performance even after submerged regarding the filter usable in a place where rainwater infiltrates simultaneously with the introduction of outside air like a cabin filter.SOLUTION: This filter medium for the air filter supports a deodorant between a thermobonded nonwoven fabric and an air permeable nonwoven fabric through heat-adhesive resin. In the filter medium, the weight ratio of heat-fusion fiber to non-heat-fusion fiber in the thermobonded nonwoven fabric is in a range of 40:60 to 100:0, and a water-insoluble flame retardant, and one or both of a water-insoluble antibacterial agent and an antimicrobial agent are supported to the thermobonded nonwoven fabric through binder resin.COPYRIGHT: (C)2013,JPO&INPIT【課題】本発明はキャビンフィルターの様に外気の導入と同時に雨水が入り込む様な場所で使用できるフィルターにおいて、被水後にも抗菌性能、防カビ性能、脱臭性能、難燃性能を発揮し、透水性にも優れるためフィルター変形を抑制することが可能とすること。。【解決手段】サーマルボンド不織布と通気性不織布の間に熱接着樹脂を介して脱臭剤が担持されてなるエアフィルター用濾材において、該サーマルボンド不織布の熱融着繊維と非熱融着繊維の重量比率が40:60~100:0の範囲にあり、該サーマルボンド不織布に非水溶性の難燃剤と非水溶性の抗菌剤および防カビ剤のいずれかまたは両方がバインダー樹脂を介して担持されてなることを特徴とするエアフィルター用濾材。【選択図】なし
