It depends on the product, the barrier required and the logistics. Cardboard benefits from a mature recycling system and wide acceptance, but often weighs more for equivalent performance and withstands moisture poorly. A cardboard composite with an inner film may be less recyclable than a plastic mono-material. The choice depends on the function the packaging needs to fulfil and the system available in the destination market, rather than the material itself.
Read the source article: Packaging eco-design: costs and lead times for PPWR 2030