Blow Molding
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PET bottle failing stress cracking test
Problembeschreibung
Bottom or neck cracking appears in the PET bottle alkaline solution stress cracking test.
Ursachenanalyse
Improper bottle bottom design (no petaloid bottom); excessive orientation of material at the bottom injection point; unreasonable '2079851475616104457 parameters cause local over-stretching.
Lösung
Optimize bottle bottom design by adding reinforcing ribs or a petaloid bottom; adjust '2079851475616104457 to reduce bottom over-stretching; select bottle-grade PET with IV≥0.80.
Wichtigste Erkenntnis
PET bottle stress cracking is closely related to bottle design, material selection and process parameters.
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