Molds & Tooling
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ASA Uneven Gloss
Problem Phenomenon
【Problem Phenomenon】Regional gloss differences on ASA product surface, high-gloss parts unqualified
Cause Analysis
Uneven mold temperature and cavity surface state differences cause different replication degrees; ASA surface finish is sensitive to mold temperature, differences immediately show as gloss difference; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
Mold temperature homogenized and at upper limit; cavity polishing consistency check; venting optimization to prevent local air trap; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA gloss difference first check mold temperature uniformity, cavity polishing follows; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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