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US 2026/0250054 A1Published application
Polymer coated paper and paperboard
AssigneeStora Enso OYJ
InventorsAnders Karlsson, Ville Ribu, Isabel Knöös, Chris Bonnerup, Åsa Nyflött
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Abstract
The present invention relates to a paper or paperboard based packaging laminate comprising: a paper or paperboard base layer, and a gas barrier layer, wherein said gas barrier layer comprises i) a barrier coating layer comprising a polyvinyl alcohol (PVOH) or a polysaccharide, and ii) an extrusion coated polymer layer 5 comprising ethylene vinyl alcohol (EVOH).
Claims23
A paper or paperboard based packaging laminate comprising:
- a paper or paperboard base layer, and
- a gas barrier layer,
- wherein said gas barrier layer comprises
- i) a barrier coating layer comprising a polyvinyl alcohol (PVOH) or a polysaccharide, and
- ii) an extrusion coated polymer layer comprising ethylene vinyl alcohol (EVOH).
2 more elements
A method for manufacturing a paper or paperboard based packaging laminate, said method comprising:
- a) providing a paper or paperboard base layer,
- b) applying an aqueous coating composition comprising a polyvinyl alcohol (PVOH) or a polysaccharide to the paper or paperboard base layer and drying the applied aqueous coating composition to form a barrier coating layer, and
- c) applying a polymer layer comprising ethylene vinyl alcohol (EVOH) to the barrier coating layer by extrusion coating.
Dependencies are inferred from the claim text.