Injection Molding
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ASA Glass Fiber Exposure Floating Fiber
Problem Phenomenon
【Problem Phenomenon】Glass fiber reinforced ASA surface fibers exposed and rough
Cause Analysis
Fibers enrich the surface with melt flow; when melt temperature and mold temperature are low and injection speed slow, fibers are difficult to be coated by resin; during on-site troubleshooting, verify item by item according to this mechanism, avoid blindly adjusting the machine based only on experience
Solution
Increase melt temperature and mold temperature to improve coating; increase injection speed to embed fibers; mold polishing reduces fiber retention; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
ASA floating fibers suppressed by temperature and injection speed, mold polishing assists; 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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