Molds & Tooling
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PVC Toy
Fenómeno del problema
PVC slush-molded toys had bubbles on the surface
Análisis de la causa
Insufficient defoaming of the slush molding slurry or too high mold temperature; 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
Solución
Vacuum defoaming of the slurry; mold temperature control; matching rotational molding speed; 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
Conclusión clave
Slush molding bubbles are controlled by defoaming and mold temperature; 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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