Processing Machinery
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HDPE milk bottle daily necessities
Problembeschreibung
The printed marks on daily-use HDPE containers fall off
Ursachenanalyse
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
Lösung
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
Wichtigste Erkenntnis
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
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