Injection Molding
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Large pressure loss in PCTG '2079851475616104452
Problem Phenomenon
Large melt pressure decay in the runner causes insufficient cavity pressure.
Cause Analysis
Runner too long or too thin with large resistance, small gate size, melt temperature too low with high viscosity.
Solution
Shorten the runner and increase cross-section; enlarge the gate; increase melt temperature.
Key Takeaway
PCTG pressure loss is related to runner and gate design.
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