Processing Machinery
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PPO Wall Thickness 0.8mm Design Lower Limit
Problem Phenomenon
【Problem Phenomenon】PPO thin-wall designed parts cannot be filled completely, and process adjustment cannot solve it
Cause Analysis
PPO has poor flowability, and product thickness should generally be above 0.8 millimeters; below this limit, the high-viscosity melt front freezes quickly, and process adjustment space is limited; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based solely on experience
Solution
Design wall thickness ≥0.8mm; for thin-wall requirements, switch to multi-gate to shorten flow length or select a high-flow grade; for extreme thin-wall parts, evaluate switching to materials such as PC; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
0.8mm is the red line of PPO wall thickness design; process cannot save structural design; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence
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