Processing Machinery
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Insufficient LDPE Film ESCR
Problembeschreibung
Packaging film in contact with contents such as detergents shows environmental stress cracking.
Ursachenanalyse
The material's environmental stress crack resistance (ESCR) grade is insufficient; internal stress and the medium act together to induce cracks.; During on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience.
Lösung
①Select a high-ESCR grade; ②Reduce processing internal stress; ③Conduct medium compatibility verification; ④Evaluate blend modification.; After adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability.
Wichtigste Erkenntnis
ESCR is a mandatory test item for medium-contact packaging; advancing material selection verification can avoid batch failure.; After confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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