Molding Process
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POM regrind usage problem
Problem Phenomenon
Regrind products have reduced strength and strong odor.
Cause Analysis
POM regrind degrades after thermal history, and formaldehyde release increases.
Solution
①Control the regrind ratio; ②lower melt temperature and shorten residence; ③use virgin material for stressed parts.
Key Takeaway
POM regrind = the less used the better.
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