Hot runner nozzle - Günther Heisskanaltechnik ...
Hot runner nozzle - Günther Heisskanaltechnik ...
Hot runner nozzle - Günther Heisskanaltechnik ...
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Gating<br />
0.5<br />
At 250°C the hot <strong>runner</strong> <strong>nozzle</strong> extends 0.5 mm into<br />
the part if the <strong>nozzle</strong> is installed to the nominal<br />
length.<br />
Fig. <strong>Hot</strong> <strong>runner</strong> <strong>nozzle</strong> installed correctly<br />
Potential error sources<br />
Problem:<br />
- Higher vestige<br />
- No flow gap despite a larger gate<br />
Fig. Cylindrical part at the gate<br />
Problem: - No sufficient insulation gap<br />
- Higher temperature needed<br />
- Great temperature fluctuations<br />
- Stringing<br />
Fig. The forechamber contour not produced correctly<br />
www.guenther-hot<strong>runner</strong>.com<br />
4/11 Subject to technical changes<br />
iT<br />
Problem:<br />
- The expanded <strong>nozzle</strong> closes the gate.<br />
Fig. Gate
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