Molds & Tooling
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POM sticking to mold
Problem Phenomenon
Products grip the core tightly and are difficult to demold.
Cause Analysis
POM has large crystallization shrinkage and tightly grips the core; too low mold temperature causes faster shrinkage and tighter grip; insufficient draft.
Solution
①Increase mold temperature; ②check and increase draft; ③reduce holding pressure; ④polish the core.
Key Takeaway
POM mold sticking = crystallization gripping force, and increasing mold temperature is the key.
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