PROBLEM TO BE SOLVED: To provide a repellent sheet for ants having excellent sustentation of ant-repelling performance.SOLUTION: The repellent sheet for ants is composed by laminating an interlayer (L1) comprising an insecticide and a resin, and an ethylene resin layers (L2 and L3) on the both sides of the interlayer. The repellent sheet for ants meets all of the following requirements. (1) It is a water-soluble insecticide with a vapor pressure of 1×10-5 Pa or lower. (2)A resin contained in the interlayer (L1) is an ethylene resin with a density of 0.910 g/cm3 or less, which is a copolymer of one or more monomers selected from the group consisting of carboxylic acid vinyl esters and unsaturated carboxylic acid esters and ethylene. (3) The ethylene resin layers (L2 and L3) comprises ethylene resins with a density of 0.918-0.940 g/cm3. (4) The thickness of L2/L1/L3 ranges 5-50/80-160/5-50 &mum respectively. (5) The concentration of the insecticide ranges 0.001-0.1 wt.%.COPYRIGHT: (C)2008,JPO&INPIT【課題】防蟻性能の持続性に優れる防蟻シートを提供する。【解決手段】殺虫剤および樹脂からなる中間層(L1)と、該中間層の両側に、エチレン系樹脂層(L2、L3)が積層されてなる防蟻シートであって、以下の要件を全て満たす防蟻シート。(1)蒸気圧が1×10-5Pa以下の水溶性殺虫剤である(2)中間層(L1)に含まれる樹脂が、カルボン酸ビニルエステルおよび不飽和カルボン酸エステルからなる群から選ばれる1種以上のモノマーとエチレンとの共重合体、密度0.910g/cm3以下のエチレン系樹脂(3)エチレン系樹脂層(L2、L3)が、密度0.918~0.940g/cm3のエチレン系樹脂(4)厚みが、L2/L1/L3=5~50/80~160/5~50μm(5)殺虫剤濃度が0.001~0.1重量%【選択図】なし
