Production & Quality
3 Aufrufe
PET Preform Storage Deformation
Problembeschreibung
Preforms become elliptically deformed after stacking, and heating is uneven during blowing.
Ursachenanalyse
Preforms creep and deform under stacking pressure and heat (warehouse high temperature); or overfilled cartons squeeze them.
Lösung
①Control warehouse temperature; ②carton loading quantity specifications; ③reject deformed preforms; ④first-in first-out.
Wichtigste Erkenntnis
Preforms also fear heat and pressure.
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