Production & Quality
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PET Preform Storage Deformation
Fenómeno do problema
Preforms become elliptically deformed after stacking, and heating is uneven during blowing.
Análise das causas
Preforms creep and deform under stacking pressure and heat (warehouse high temperature); or overfilled cartons squeeze them.
Solução
①Control warehouse temperature; ②carton loading quantity specifications; ③reject deformed preforms; ④first-in first-out.
Conclusão principal
Preforms also fear heat and pressure.
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