| 摘要 |
<p>The method uses a nozzle head (6) with feed pipe (16) for a pressurized material. The nozzle head also has a return pipe (17), to return the material to its reservoir, so that a constant material flow is maintained via feed and return pipes. The flow is adjusted via a throttle unit (4), positioned between the return pipe and an ejection opening (27) in the nozzle head. Material temperature and/or pressure are measured near feed pipe and/or return pipe. The throttle is operated self-regulating by a control device, which is also for electromagnetic or pneumatic regulation of the nozzle needle (5).</p> |
