Material Analysis
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Exudate from PET bottle cap liners
Fenómeno do problema
Oily or powdery substances exude from the liner inside the PET bottle cap, contaminating the contents.
Análise das causas
Small-molecule additives (plasticizers, slip agents, etc.) in the liner material migrate and exude; the liner material is not resistant to the contents.
Solução
Select liner material formulations with low migration; control the type and dosage of additives; conduct accelerated migration tests for verification.
Conclusão principal
PET bottle cap liner exudation is a strictly controlled issue in food packaging.
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