Raman Analysis of Laminated Food Packaging Film: Diffusion of an Additive

Laminated films are increasingly being used by the food industry for packing and presenting their food products. The strength and flexibility of laminated films makes them ideal for cooking, frozen foods, drink sachets, snack products and pet foods. Materials commonly used include OPP, LDPE, PET, paper and foils in a variety of combinations tailored to the desired presentation and function. An understanding of how the food product interacts with the packaging material is vital to ensuring consumer safety and understanding the performance of the product over the recommended life cycle. In this study, Raman spectroscopy, in conjunction with accelerated aging studies, is shown to be well suited to exploring the interaction of a food product with the laminated polymer films of commercial heat seal bags.

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