| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical vaporizer simple in the structure of its chemical-impregnated body, high in chemical vaporizing efficiency, and also excellent in production easiness. SOLUTION: The chemical vaporizer has the following construction and mechanism: a chemical-impregnated body made by impregnating 30-500 mg of a room-temperature-vaporizable pyrethroid-based chemical in such an air-permeable support that a narrow liquid-absorbing sheet is continuously folding so as to be 2-10 mm in the pitches between the respective apex sides of adjacent ridges and both ends of the sheet are joined each other into a circular form is housed in a cartridge having a circular hollow structure in such a way that the respective apex sides are in contact with the bottom of the hollow structure. This cartridge is revolved at 500-2,000 rpm to vaporize the chemical by centrifugal force acting on the chemical-impregnated body. COPYRIGHT: (C)2007,JPO&INPIT
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