activeLock - active closing of the non-return valve
The non-return valve frequently forms the weak spot with high-precision parts. Traditional systems are only closed passively through the injection procedure and the injection pressure occurring. Fluctuations in the melt viscosity then frequently also lead to ﬂuctuations in the closing behaviour, the melt cushion and therefore of the shot weight and of the quality of the parts.
Active closing of the non-return valve is possible with activeLock. A deﬁned closing movement before the injection during the turning back of the screw completely closes the non-return valve and ensures absolutely consistent closing behaviour which can be actively inﬂuenced. The non-return valve is securely closed during the entire injection and hold pressure process. Process consistency is increased, ﬂuctuations reduced and the risk of rejects is minimised.
- Improved precision and reproducibility
- Fewer rejects
- Increased process consistency