Injection Molding
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Excessively long PET preform injection cycle
Problem Phenomenon
The PET preform '2079851475616104452 cycle is too long (>25 seconds), and production efficiency is low.
Cause Analysis
Cooling time is too long (PET crystallization exotherm causes slow cooling); mold cooling efficiency is insufficient; preform walls are too thick.
Solution
Optimize cooling water channels to increase cooling efficiency; appropriately reduce mold temperature; thin the preform wall thickness; use rapid heating and cooling technology.
Key Takeaway
The PET preform molding cycle directly affects production costs.
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