Injection Molding
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Gate clogging of PET injection mold
Problem Phenomenon
The gate frequently clogs during PET '2079851475616104452, injection pressure rises abnormally, and production is interrupted.
Cause Analysis
PET cools, crystallizes and solidifies too fast at the gate; gate size is too small; mold temperature in the gate area is on the low side.
Solution
Increase gate size; increase mold temperature in the gate area to 140-160°C; use a hot runner system.
Key Takeaway
The fast crystallization characteristic of PET easily causes gate clogging and needs to be addressed through mold temperature and gate design.
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