Molds & Tooling
4 görüntüleme
PET bottle mouth deformation
Sorun Belirtisi
The bottle mouth thread area deforms elliptically after blowing, and the cap does not seal tightly
Neden Analizi
The bottle mouth softens when heated in the blowing mold and deforms at demolding when cooling is insufficient; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience; this mechanism has been repeatedly verified by industry data and should be confirmed first during troubleshooting
Çözüm
Strengthen cooling of the bottle mouth area; protect the bottle mouth during blowing; optimize mold temperature and timing; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Temel Çıkarım
Bottle mouth cooling is the guarantee of sealing precision; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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