Processing Machinery
2 views
TPU product shutdown handling
Problem Phenomenon
Black specks and bubbles erupt at restart after shutdown.
Cause Analysis
During shutdown, TPU retained in the barrel degrades; degraded material is discharged at restart; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry materials and should be confirmed first during troubleshooting
Solution
①clean the barrel before shutdown; ②reduce the heat preservation temperature; ③scrap the front-section products after restart; ④shorten unnecessary shutdowns; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Shutdown management prevents degradation; cleaning and lowering heat preservation are standard operations; 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 similar problems later
Was this helpful?
0 people found this helpful
Thank you for your feedback!