Processing Machinery
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LLDPE color masterbatch dispersion
Problem Phenomenon
Poor dispersion of color specks in LLDPE film
Cause Analysis
The melt index of the color masterbatch carrier does not match the LLDPE; when troubleshooting on site, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Solution
Select color masterbatch with matching melt index; mix material uniformly; verify dispersion effect; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
Select color masterbatch by melt index matching; after confirming effectiveness, fix 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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