| 摘要 |
PROBLEM TO BE SOLVED: To control the shape of a jet profile of a paste or soft fluid by a simple means by providing near to an outlet an elastic element which is disposed between two contact elements whose relative position is adjustable each other and has a passage opening communicating with a conduit. SOLUTION: An elastic-annular shaped element 18 and contact elements 19 and 20 adjacent to the elastic element are provided in a blowing pipe 6 disposed in a nozzle head 5. The elastic annular-shaped element 18 is compressed in an axial direction A-A by the contact elements 19 and 20 so that the material shifts slightly inwardly, radially and a through opening 17 formed as a gap of the elastic annular-shaped element 18 is narrowed. Namely, the elastic annular-shaped element 18 is compressed by a relative movement of the contact elements in a fitting state while operating an adjusting bar 22 and slackening a return spring 25. Instead of the elastic annular-shaped element 18, an optional shaped element having a general rectangular cross section can be also adopted. Here, two contact elements are a plunger fixed within the nozzle and a hollow outer cylinder relatively movable to the plunger and the elastic element is made of polyurethane having 60-80 Shore hardness.
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