Extrusion & Post
6 visualizaciones
Carbonization in PET waste yarn recycling and granulation
Fenómeno del problema
During PET waste yarn recycling and granulation, the material carbonizes and turns black, producing black particles and a burnt smell.
Análisis de la causa
The waste yarn contains a large amount of spinning oil agent that degrades and carbonizes at high temperature; extrusion temperature is on the high side; waste yarn bulk density is low and feeding is uneven.
Solución
Pre-wash the waste yarn to remove surface oil agents; use a forced feeding device; reduce extrusion temperature; use a vented extruder.
Conclusión clave
PET waste yarn recycling requires pretreatment to remove oil agents to prevent extrusion degradation.
¿Le ha resultado útil?
0 personas encontraron esto útil
¡Gracias por sus comentarios!