Injection Molding
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PETG '2079851475616104452 jetting marks near the gate
Problem Phenomenon
Snakeskin-like or twisted jetting flow marks appear near the gate of PETG injection molded products.
Cause Analysis
Gate size too small, the melt enters the cavity in a jet, injection speed too fast, melt temperature low.
Solution
Increase the gate size; reduce injection speed using multi-stage injection; appropriately increase the melt temperature.
Key Takeaway
PETG jetting marks are a manifestation of unstable filling flow.
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