Extrusion & Post
7 visualizações
PETG recycled pelletizing pellet yellowing
Fenómeno do problema
After PETG scrap is crushed, recycled and re-pelletized, the pellet color obviously yellows.
Análise das causas
The recycled material undergoes another thermal history during extrusion pelletizing causing thermal degradation and oxidation, and the waste is mixed with impurities or contaminants.
Solução
Control recycling pelletizing temperature at 220-240°C; fully clean the waste to remove contaminants; add antioxidant during pelletizing.
Conclusão principal
PETG recycling pelletizing color control requires lowering temperature and adding stabilizers.
Isto foi útil?
0 pessoas acharam isto útil
Obrigado pelo seu comentário!