Injection Molding
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PC Glass Fiber Exposure
Problem Phenomenon
[Problem Phenomenon] Glass fiber PC surface has floating fibers and is rough
Cause Analysis
Fibers enrich the surface; low melt temperature, mold temperature and slow injection speed cause poor coverage; when troubleshooting on site, verify each item according to this mechanism one by one, and avoid blindly adjusting the machine based on experience alone; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Increase the melt temperature and mold temperature; increase the injection speed; mold polishing; after adjustment, take samples continuously to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, so as to locate effective measures
Key Takeaway
For PC floating fibers, raise the temperature, speed and pressure, with polishing as an aid; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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