Extrusion & Post
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PP Extrusion Temperature Setting
Problem Phenomenon
[Problem Phenomenon] Improper temperature for PP extrusion of film, sheet, and pipe; unstable quality
Cause Analysis
PP extrusion melt temperature 200-260°C adjusted by product; die temperature affects the surface; screen pack pressure differential monitoring; during on-site troubleshooting, verify item by item according to this mechanism, and avoid blindly adjusting the machine based on experience alone
Solution
Extrusion melt temperature 200-260°C; die temperature matching; screen pack pressure differential monitoring; after adjustment, take continuous samples to verify the effect, and resume mass production only after confirming stability; change only one variable at a time and record parameter changes to facilitate locating effective measures
Key Takeaway
PP extrusion 200-260°C; die temperature determines the surface; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for similar future problems
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