Processing Machinery
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PPO Contamination-Resistant Parts
Problem Phenomenon
[Problem Phenomenon] Material selection for parts requiring surface contamination resistance and easy cleaning
Cause Analysis
PPO has the advantages of wear resistance, non-toxicity and contamination resistance, suitable for parts with high surface cleanliness requirements; combined with low water absorption to maintain performance in wet state; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based only on experience
Solution
Select the PPO series for contamination-resistant parts; verify surface ease of cleaning by actual measurement; select compliant grades for food and medical scenarios; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PPO is contamination-resistant and non-toxic, a low-key advantage for clean parts; after confirming effectiveness, solidify the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a reference for troubleshooting similar problems in the future
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