Extrusion & Post
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LDPE Printing Adhesion
Fenómeno del problema
LDPE film printing ink adhesion is poor
Análisis de la causa
Surface energy is low and slip agent may have exuded; 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
Solución
Corona treatment in place; select PE-special ink; check slip agent exudation; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes, so as to locate the effective measure
Conclusión clave
Printing adhesion relies on corona and ink matching; 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 problems in the future
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