Compare common flexible-packaging structures and see the role each layer can play. The right choice depends on your product, filling line and shelf-life requirements.
Layer order is shown from the outside to the product side.
An aluminium foil layer helps block light and limit oxygen and moisture transfer. Confirm the final structure and shelf-life target with product-specific testing.
A possible structure when print appearance and sealing matter. Check moisture-barrier needs against the product, target shelf life and packing line.
PET can contribute strength and printability, while PE can provide the heat-seal surface. Performance depends on the selected grades and finished pack.
Uses one polymer family, such as PE or PP. It may be designed for the corresponding recycling stream where accepted; collection and recycling options vary by location.
Material names and layer roles are indicative. Barrier, sealing and recycling performance depend on the selected grades, finished pack and local requirements.
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