Extrusion & Post
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Glass Fibre surface snakeskin pattern
Problem Phenomenon
Glass Fibre extruded product surface has snakeskin-like irregular texture
Cause Analysis
extrusion temperature low, melt elastic recovery uneven; die temperature distribution uneven
Solution
1) raise extrusion temperature to the processing temperature range; 2) homogenize die temperature ±2°C; 3) reduce extrusion rate to reduce elastic recovery
Key Takeaway
snakeskin pattern is caused by low-temperature extrusion and elastic recovery; raising temperature and reducing speed are key
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