| 摘要 |
PROBLEM TO BE SOLVED: To obtain an insecticide formed by using a paper sheet which is advantageous in view of recycling, as a material for a ventilating case, is equipped with a sustained releasing effect of a medicine and stable insecticidal effect for a long period, and also preventing the soiling of the case with the medicine. SOLUTION: This insecticide is obtained by housing a carrier containing a normal temperature-vaporizable pyrethroid in a ventilating paper case formed by the paper sheet laminated with a vaporizable substance-im-penetrating plastic layer on one side surface or both surfaces and installed with vaporizing holes on it. As the plastic layer laminated on the paper sheet, a polybutylene terephthalate, polyester or polyamide is preferable, and among them, the polybutylene terephthalate is especially preferable. COPYRIGHT: (C)2003,JPO
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