Extrusion & Post
13 visualizações
Wrinkling in EVA extruded film winding
Fenómeno do problema
Transverse wrinkles and longitudinal creases appear after winding EVA extruded film
Análise das causas
Film tension uneven, fluctuating ±20%; uneven film thickness causing inconsistent stretching of each section; different shrinkage rates in each direction after cooling
Solução
1) Automatic tension control system to stabilize winding tension; 2) Improve film thickness uniformity to ±5%; 3) Adjust guide roller parallelism <0.05mm/m; 4) Fully cool film to <30°C before winding
Conclusão principal
Film wrinkling is caused by tension fluctuation and uneven thickness; automatic tension control and homogenization are key
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!