Migration from Food Packaging Containing a Functional Barrier: Mathematical and Experimental Evaluation

摘要: A model for predicting the functional barrier properties of layered films based on Fickian diffusion is presented along with experimental migration data from poly(ethylene terephthalate) (PET) to test model. Three-layered coextruded PET were produced in which center layer contained solutes/contaminants and outer layers made virgin material. The contaminants toluene chlorobenzene. films, 400 μm thick, had 20, 30, 40, 60 PET. or core thicknesses between 360 280 μm. amount was measured into water, 3% acetic acid, isooctane at temperatures up °C. through different predictable basis presented. effects a during coextrusion process must be considered if reliable predictions of...