Processing Machinery
5 visualizações
PETG product black or dark lines
Fenómeno do problema
Black or dark linear stripes appear inside the product.
Análise das causas
The barrel or screw has carbon deposits falling off and mixing into the melt, and a certain temperature zone overheats causing local degradation.
Solução
Clean the barrel and screw to remove carbon deposits; check the accuracy of each temperature zone; use purging compound for regular machine cleaning.
Conclusão principal
PETG black lines point to carbon deposits or local degradation.
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!