Gas barrier film for packaging material
AssigneeStora Enso OYJ
InventorsIsabel Knöös, Åsa Nyflott, Chris Bonnerup
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Abstract
The present invention relates to a gas barrier film for a paper or paperboard based packaging material, said gas barrier film comprising: a microfibrillated cellulose layer (MFC layer), at least one surface of which has been metallized; and a polymer dispersion coating layer disposed on at least one surface of the MFC layer. The present invention further relates to a paper or paperboard based packaging material, containers and carton blanks comprising the gas barrier film, and to a method for manufacturing the gas barrier film.
Claims20
A gas barrier film for a paper or paperboard based packaging material, said gas barrier film comprising:
- a microfibrillated cellulose layer (MFC layer), at least one surface of which has been metallized;
- and
- a polymer dispersion coating layer disposed on at least one surface of the MFC layer between the MFC layer and the paper or paperboard based packaging material,
- wherein a basis weight of the polymer dispersion coating layer is in a range of 1-7 gsm,
- wherein a thickness of the gas barrier film is between 35 to 50 μm.
Dependencies are inferred from the claim text.