| 摘要 |
An extrusion head for processing rubber or thermoplastic plastics material including a housing flange-mountable on a screw extrusion device. The head further including an inlet region for receiving material from the extrusion device and for receiving the downstream end of the screw, the inlet leading into a flow channel portion and a nozzle outlet which receives the material from the flow channel for extrusion in the form of a shaped profile. A sealable air discharge device is disposed in the flow channel portion to remove air bubbles, particularly that which is formed during the start up phase of the extrusion downstream of the downstream end of the screw. |
