Production & Quality
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PET Preform Storage Deformation
Fenómeno del problema
Preforms become elliptically deformed after stacking, and heating is uneven during blowing.
Análisis de la causa
Preforms creep and deform under stacking pressure and heat (warehouse high temperature); or overfilled cartons squeeze them.
Solución
①Control warehouse temperature; ②carton loading quantity specifications; ③reject deformed preforms; ④first-in first-out.
Conclusión clave
Preforms also fear heat and pressure.
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