PROBLEM TO BE SOLVED: To provide an insect repellent sheet that continuously exhibits a repelling effect against flying insects and arthropod pests even when the sheet is used for a long period of time.SOLUTION: An insect repellent sheet that can continuously exhibit a repelling effect against flying insects and arthropod pests even when the sheet is used out of doors for a long period of time can be obtained by conferring a soft vinyl chloride-based resin layer containing a pyrethroid-based compound and a titanium oxide on one side or the whole surface of a mesh base fabric, in which especially the soft vinyl chloride-based resin layer has a two layer structure of an inner layer and an outer layer, the content mass% of the pyrethroid-based compound is higher in the inner layer than that in the outer layer, and the content mass% of the titanium oxide is higher in the outer layer than that in the inner layer and at least one layer of the inner layer and the outer layer is a foam layer.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】飛翔性昆虫や節足害虫に対する忌避効果が長期間使用しても継続的に発現する防虫シートの提供。【解決手段】メッシュ状基布の片面若しくは全面にピレスロイド系化合物と酸化チタンが分散された軟質塩化ビニル系樹脂層を付与すること、特にこの軟質塩化ビニル系樹脂層が、内層及び外層の二層構造を成し、ピレスロイド系化合物の含有質量％が外層よりも内層の方が高く、酸化チタンの含有質量％が内層よりも外層の方が高いものとすること、さらに内層及び外層の少なくとも一方の層を発泡層とすることで、屋外で長期間使用しても、飛翔性昆虫や節足害虫の忌避効果が継続的に発現できる防虫シートが得られる。【選択図】なし
