Molds & Tooling
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Unstable post-shrinkage of POM products
Problem Phenomenon
POM parts continue to shrink for a period of time after demolding.
Cause Analysis
The crystallization process of POM still proceeds slowly after cooling (post-crystallization), causing the size to continue to change.
Solution
Extend the cooling time in the mold; annealing heat treatment to stabilize crystallization.
Key Takeaway
POM post-shrinkage is a variable in precision dimensional control.
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