Extrusion & Post
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PPO Cable Coating Temperature Resistance
Problem Phenomenon
[Problem Phenomenon] Wire and cable jackets need heat resistance and flame retardancy; PVC temperature resistance is not enough
Cause Analysis
PPO extrusion can be used for wire coating, with temperature resistance and electrical properties superior to PVC; the flexible halogen-free PPE-TPE extrusion grade (WCD931) is oriented to cable evaluation applications
Solution
Select PPO-series extrusion grades for heat-resistant cable jackets; choose PPE-TPE for halogen-free requirements; configure the extrusion process with a vented machine; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability
Key Takeaway
PPO cable coating is heat-resistant and halogen-free, an upgrade option over PVC; 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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