PROBLEM TO BE SOLVED: To provide an impregnation material attachment method for a vehicle air-conditioning filter, which is an impregnation material different from the filter, having no influence on a thickness of the filter, and no risk of dropout.SOLUTION: In an impregnation material attachment method to such a filter 40 that a filter surface 42 comprising continuous ridge-folding parts 44 and valley-folding parts 46 is attached in a flatly placed state, the ridge-folding part 44 constituted on the upper surface side of the filter 40 is pinched by a clip 16, to thereby hold a volatile component impregnation material 12 arranged in the valley-folding part 46 constituted on the upper surface side of the filter 40.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2019,JPO&INPIT【課題】フィルタと別体の含浸材であり、フィルタの厚みへの影響、及び脱落の危険性が無い車両空調フィルタへの含浸材取付方法及を提供する。【解決手段】連続する山折り部44と谷折り部46から成るフィルタ面42が平置き状態で取り付けられるフィルタ40への含浸材取付方法であって、フィルタ40の上面側に構成された山折り部44をクリップ16で挟み込む事で、フィルタ40の上面側に構成された谷折り部46に配置した揮発成分含浸材12を保持することを特徴とする【選択図】図2