Processing Machinery
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EVA internal black specks carbonization
Fenómeno del problema
Black specks of carbonized matter 0.1-0.5mm appear inside EVA products
Análisis de la causa
EVA carbonized by prolonged heating in barrel dead zones; carbon deposits on the screw head; raw material impurities
Solución
1) Reduce processing temperature to reduce carbonization; 2) Regularly clean the screw and barrel; 3) Filter raw material to remove impurities
Conclusión clave
Black specks are caused by thermal carbonization and carbon deposits; reducing temperature and regular cleaning are key
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