Injection Molding
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PETG '2079851475616104452 hot runner leakage
Problem Phenomenon
The PETG hot runner system leaks melt at high temperature, and material overflows.
Cause Analysis
Hot runner sealing surfaces fit poorly, thermal expansion increases the gap, system pressure high, seals aged.
Solution
Repair the sealing surface fit accuracy; consider thermal expansion and reserve pre-tightening force; reduce system pressure; use high-temperature resistant sealing materials.
Key Takeaway
PETG hot runner leakage needs prevention from mechanical precision and thermal management.
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