PET AlOx Film can be evaluated for freeze-dried food when the package needs transparency and protection from oxygen and moisture. The film alone cannot prevent texture loss if seals, folds or storage conditions allow moisture to enter.
An AlOx Film Supplier needs the product's moisture sensitivity, required OTR and WVTR, pouch size and storage climate. Cailong lists transparent PET AlOx grades for food packaging, including different coating and thermal-process options.
Define the acceptable change in crispness, color and aroma. Record filling-room humidity and the time between filling and sealing because the product may absorb moisture before the barrier test begins.
Confirm the print layer, PET AlOx orientation, adhesive and sealant. Test seals, folds and corners separately from the flat laminate.
Measure package integrity and product condition through the intended storage period. Send Cailong the current structure, barrier target, filling conditions and failed packs.
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