Extrusion & Post
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LLDPE film winding hardness
Problembeschreibung
Film roll too soft and collapsing or too hard with chrysanthemum pattern.
Ursachenanalyse
LLDPE film stiffness characteristics make the winding tension window different from LDPE; tension and taper need recalibration.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience.
Lösung
①Set the tension curve according to LLDPE characteristics; ②optimize taper parameters; ③check core quality; ④verify roll hardness.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Wichtigste Erkenntnis
Winding parameters should be adjusted with material characteristics; directly continuing LDPE parameters easily causes problems.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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