Extrusion & Post
13 visualizações
EVOH Surface Snakeskin Pattern
Fenómeno do problema
EVOH extruded product surfaces show snakeskin-like irregular texture
Análise das causas
Extrusion temperature too low, melt elastic recovery uneven; die temperature distribution uneven
Solução
1) Increase extrusion temperature to the processing temperature range; 2) Homogenize die temperature ±2°C; 3) Reduce extrusion rate to decrease elastic recovery
Conclusão principal
Snakeskin pattern is caused by low-temperature extrusion and elastic recovery; raising temperature and reducing speed are key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!