Material Drying
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TPU Medical Application
Problem Phenomenon
Medical TPU products show performance decline after sterilization, or processing defects cause biocompatibility risks
Cause Analysis
Medical grade TPU does not contain hydrolysis-resistant agents, and drying requirements are stricter to 0.02%; the sterilization method must be compatible with the material; processing defects may become biocompatibility hazards
Solution
①Dry medical grade TPU to below 0.02%; ②Choose the sterilization method according to material compatibility; ③Zero-tolerance management of processing defects; after adjustment, continuously sample to verify the effect, and resume mass production only after confirming stability
Key Takeaway
Medical TPU is the highest standard of drying and defect control; the 0.02% red line plus zero tolerance protects biological safety; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence
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