Processing Machinery
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LCP Product Black Specks
Problem Phenomenon
Black specks appear in the product.
Cause Analysis
Resident material in barrel dead spots carbonizes at high temperature and falls off; LCP's high processing temperature brings a large carbonization risk.; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based solely on experience
Solution
①Thoroughly clean the barrel; ②shorten residence time; ③regularly disassemble and inspect the screw and nozzle; ④purge and clean before shutdown.; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Black specks point to equipment cleanliness; the purging frequency for high-temperature materials must be increased.; 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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