PROBLEM TO BE SOLVED: To largely improve the diffusion quantity of a chemical to further enhance the efficacy of the chemical, by devising the structures of impregnation members and their combination, when a plurality of the impregnation members are combined to form the chemical-diffusing tool.SOLUTION: The chemical-diffusing tool is characterized by comprising the first and second impregnation members 11,12 produced by pleating air-permeable nonwoven fabrics and impregnated with a volatile chemical, wherein the first impregnation member 11 is arranged to flow air from one thick direction side, and the second impregnation member 12 is arranged in an air-flowing direction so that one thickness direction side of the second impregnation member 12 is overlapped on the other thickness direction side of the first impregnation member 11 in parallel, when the impregnation members are looked from the upstream side of the air flowing direction.COPYRIGHT: (C)2013,JPO&INPIT【課題】複数の含浸体を組み合わせて薬剤拡散具を構成する場合に、含浸体の構造、及びその組み合わせに工夫を凝らすことにより、薬剤の拡散量を大幅に向上させて薬剤による効力をより一層高める。【解決手段】通気性を有する不織布をプリーツ成形することによって構成され、揮発性を有する薬剤を含浸させた第1及び第2含浸体11,12を備え、第1含浸体11は、厚み方向一側の面から空気が送られるように配置され、空気流れ方向上流側から見たとき、第2含浸体12は、第2含浸体12の厚み方向一側の面が第1含浸体11の厚み方向他側の面と重なるように空気流れ方向に並んで配置されている。【選択図】図1
