| 摘要 |
PURPOSE:To enable spraying over a wide range, by a method wherein both ends of a cylindrical hose comprising a flexible material are opened and one of two kinds of holes, each of which consists of a plural one, provided to the interior is opened when one opening of said hose is allowed to communicate with a powered spraying machine. CONSTITUTION:A spraying hose 11 is formed into a cylindrical shape from a flexible material such as a resin film and provided with opening parts 12, 13 at both ends thereof in the longitudinal direction. One of these opening parts 12, 13 is allowed to selectively communicate with a bellows pipe 7 communicating with the emitting port of a powered spraying machine in a detachable manner and, at this time, the other opening part is closed by a closure means. A plurality of first holes 15 and a plurality of second holes 16 are respectively drilled in the spraying hose 11 along the longitudinal direction thereof at an appropriate interval and the free ends 17b, 18b of barrier plates 17, 18 formed to respective holes 15, 16 rise and fall by a wind force from a blower through bent parts 17c, 18c to open only the desired hole.
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