(Aktenzeichen: DE 102013114 125.0)
This specially constructed "active" non-return valve shuts off after dosing without further movement of the screw.
The shut-off process takes place immediately after dosing by means of a lead bolt, a pressure spring and a tightening pin.
The input housing serves to ensure precise processing within the cylinder. The threaded bolt fixes the "active" non-return valve in the screw conveyor.
Standard systems are only closed by the injection process and the resultant injection pressure.
- Materials with low viscosity e.g. PA
- With fluctuations of mass cushion
- Low injection speeds
- When processes fluctuate
Temporarily only delivered from a screw diameter of 45 mm because of the smaller mechanics of the component and lack of stability.
Supplied exclusively in highly durable, powder metallurgical quality.