Molds & Tooling
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POM mold temperature 80-100°C
Problem Phenomenon
Product surface shows ripples and wrinkles, obvious weld lines, or demolding burns and overly long cycles
Cause Analysis
POM cools and solidifies quickly; when the mold temperature is low, the surface layer quenches, producing ripples, marks, and weld lines; a mold temperature of 80-100°C can improve surface quality, and thin-walled long-flow complex parts can be raised to 120°C
Solution
①Routine mold temperature 80-100°C with hot oil circulation; ②raise to 120°C for thin-walled long-flow complex parts; ③use a mold temperature controller for precise control of precision products; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Mold temperature is the first variable for POM surface quality; the 80-100°C baseline plus on-demand increases compensates for the shortcoming of fast cooling with mold temperature; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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