Processing Machinery
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PVC Medical Soft Tubing
Problem Phenomenon
Medical PVC soft tubing showed decreased transparency, hardened after sterilization, and gel particles on the extruded surface
Cause Analysis
Medical PVC has high requirements for formulation purity; improper sterilization method causes plasticizer migration and material hardening; insufficient filtration produces gel particles affecting transparency and safety; during on-site troubleshooting, verify item by item according to this mechanism to avoid blindly adjusting the machine based only on experience
Solution
①Medical-grade dedicated formulation and clean production; ②select sterilization method according to material compatibility; ③high-efficiency melt filtration to ensure transparency; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
Medical PVC is a double high standard of formulation and cleanliness; sterilization compatibility and filtration precision are key indicators; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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