Extrusion & Post
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LLDPE film shrink packaging application
Problembeschreibung
Shrink packaging film shrink force and shrinkage rate do not meet standards.
Ursachenanalyse
Shrink performance is determined by the degree of frozen orientation; the LLDPE formulation and stretching cooling process need dedicated design.; During on-site troubleshooting, verify item by item according to this mechanism, avoiding blindly adjusting the machine based only on experience.
Lösung
①Optimize the stretching and cooling process; ②select a shrink-film-dedicated grade; ③test the shrink curve; ④match packaging machine parameters.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Wichtigste Erkenntnis
Shrink film is a dedicated product of formulation-process synergy; shrink curve testing is a development verification means.; After confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence.
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