perméabilité (3) emballage (3) oxygène (3) matériau (3) aliment (3) Food (3) Packaging (3) Value (3) Self (3) Polyethylene (3) Photography--Films (3) Permeability (3) Packaging (3) Oxygen (3) Motion pictures (3) Montmorillonite (3) Microfilms (3) Food (3) Filmstrips (3) Permeability (3) Values (1) Polymers (1)