| 摘要 |
PURPOSE:To make the thickness of the film on the trim part in a can body larger than that of other part by a method wherein a triangular pyramid-shaped or ship- shaped notch widely opened forwardly is allowed to cross the dome-shaped blind end of the leading end of a nozzle main body to form an orifice-shaped jet port and circular arc-shaped notches are provided in the vicinity of both end parts thereof. CONSTITUTION:A cylindrical nozzle hole 4 opened at the base end thereof and formed into a dome-shaped blind end 3 at the other end thereof is formed to a nozzle main body 2 and a triangular pyramid-shaped notch 5 widely opened forwardly is allowed to cross the dome-shaped blind end 3 to form an equilateral triangle-shaped or ship- shaped orifice type jet port 6 whose apexes 9, 10, 11 are positioned on the inner peripheral circle of the nozzle hole 4. Further, circular arc-shaped notches 7, 8 are formed in the vicinity of both end parts of two equal sides of the orifice. By the above- mentioned constitution, the film of the trim part of a can body can be made thick while other part can be made thin and over-spray is reduced and paint can be curtailed. Further, the generation of a tail can be prevented by the combination with a retractor. |
