Processing Machinery
2 views
HDPE milk bottle daily necessities
Problem Phenomenon
The printed marks on daily-use HDPE containers fall off
Cause Analysis
HDPE has low surface energy and poor ink adhesion; when troubleshooting on site, 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 data and should be confirmed first during troubleshooting
Solution
Corona or flame treatment before printing; select PE-specific ink; 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
HDPE printing must have surface activation; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems
Was this helpful?
0 people found this helpful
Thank you for your feedback!