Paper-based multilayer packaging films
AssigneeAmcor Flexibles North America, Inc.
InventorsJean-Marie BONIFACY, Donatien COULON
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Abstract
This disclosure relates to multilayer packaging films and methods of producing the same. The multilayer packaging films are paper-based and have a total composition comprising greater than or equal to 80%, by weight, of a paper component. The multilayer packaging films are easily recyclable by repulping yet retain high-performance packaging characteristics including maintaining permeability performance and controlling the rate of ripening of a living food product, such as a cheese product. For example, the cheese product may include, but is not limited to, a soft cheese and/or a respirable cheese.
Claims22
A multilayer packaging film comprising:
- a polymer layer;
- a water-absorbing layer comprising a paper component having a basis weight in a range of from 15 g/m2 to 100 g/m2;
- a printing layer on an outer surface of the water-absorbing layer, the printing layer facing away from the food product to be packaged;
- and
- an adhesive layer attaching the polymer layer to the water-absorbing layer, the adhesive layer having a dry basis weight in a range of from 0.1 g/m2 to 6 g/m2,
- wherein the polymer layer has a plurality of microcuts and the multilayer packaging film has an air permeability in a range of from 0.1 mL/min Bendtsen to 200 mL/min Bendtsen measured using the method disclosed in the international standard ISO 5636-3.
A multilayer packaging film comprising:
- a polymer layer;
- a water-absorbing layer comprising a paper component having a basis weight in a range of from 15 g/m2 to 100 g/m2;
- and
- an adhesive layer attaching the polymer layer to the water-absorbing layer,
- wherein the polymer layer has a thickness in a range of from 2 μm to 10 μm, a plurality of microcuts, and the multilayer packaging film has an air permeability in a range of from 0.1 mL/min Bendtsen to 200 mL/min Bendtsen measured using the method disclosed in the international standard ISO 5636-3.
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A multilayer packaging film comprising:
- a polymer layer having a thickness in a range of from 2 μm to 10 μm, the polymer layer facing towards a cheese product to be packaged;
- a water-absorbing layer comprising a paper component having a basis weight in a range of from 15 g/m2 to 100 g/m2, the water-absorbing layer facing away from the cheese product to be packaged;
- and
- an adhesive layer attaching the polymer layer to the water-absorbing layer, the adhesive layer having a dry basis weight in a range of from 0.1 g/m2 to 6 g/m2,
- wherein the polymer layer has a plurality of microcuts that are randomly distributed in the polymer layer, the air permeability of the multilayer packaging film is in a range of from 0.1 mL/min Bendtsen to 200 mL/min Bendtsen measured using the method disclosed in the international standard ISO 5636-3, and a total composition of the multilayer packaging film comprises 80%, by weight, of the paper component.
Dependencies are inferred from the claim text.