Extrusion & Post
5 görüntüleme
PETG recycled pelletizing pellet yellowing
Sorun Belirtisi
After PETG scrap is crushed, recycled and re-pelletized, the pellet color obviously yellows.
Neden Analizi
The recycled material undergoes another thermal history during extrusion pelletizing causing thermal degradation and oxidation, and the waste is mixed with impurities or contaminants.
Çözüm
Control recycling pelletizing temperature at 220-240°C; fully clean the waste to remove contaminants; add antioxidant during pelletizing.
Temel Çıkarım
PETG recycling pelletizing color control requires lowering temperature and adding stabilizers.
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