Processing Machinery
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PVC Medical Granules
Fenómeno del problema
Medical PVC granules processed under ordinary conditions fail biocompatibility
Análisis de la causa
Medical grade has special requirements for the additive system and processing temperature, and ordinary conditions destroy compliance; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solución
Medical grade follows the process specified by the supplier; take the lower limit of temperature; dedicated equipment to prevent contamination; 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
Medical PVC requires dedicated process and equipment; 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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