Processing Machinery
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PVC Transparent Part Gel Particles
Fenómeno do problema
Gel particles and specks appear on transparent PVC products
Análise das causas
Fish eyes from poor plasticization or foreign impurities, visible in transparent parts; during on-site troubleshooting, verify item by item according to this mechanism to 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
Solução
Optimize plasticization temperature and shear; clean raw material; strengthen filtration; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Conclusão principal
Gel particles in transparent parts are controlled by plasticization and cleanliness; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar problems in the future
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