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