Molding Process
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Color migration of PLA colored products
Fenómeno do problema
The color of PLA colored products contaminates the contact objects.
Análise das causas
The migration resistance of the dyes used is poor, and the degradation products of PLA itself carry color.
Solução
Select migration-resistant pigments (pigments approved for food contact); control the processing and storage temperature.
Conclusão principal
PLA color migration is a key concern for food packaging.
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