Paper or paperboard based packaging laminate
AssigneeStora Enso OYJ
InventorsChris Bonnerup, Kaj Backfolk, Fredrik Werner
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Abstract
A paper or paperboard based packaging laminate comprising: a paper or paperboard base layer, a mineral coating layer, a PVOH coating layer, and a metallized film layer, wherein the mineral coating layer is arranged between and in contact with the base layer and the PVOH coating layer, and wherein the metallized film layer is laminated to the PVOH coating layer, and wherein the packaging laminate has an oxygen transfer rate (OTR), measured according to the standard ASTM F-1927 at 90% relative humidity and 38° C., of less than 5 cc/m2/day. Also a container with such a paper or paperboard based packaging laminate.
Claims29
A paper or paperboard based packaging laminate comprising:
- a paper or paperboard base layer,
- a mineral coating layer,
- a polyvinyl alcohol (PVOH) coating layer, and
- a metallized film layer,
- wherein the mineral coating layer is arranged between and in contact with the base layer and the PVOH coating layer, and
- wherein the metallized film layer is laminated to the PVOH coating layer, and
- wherein the packaging laminate has an oxygen transfer rate (OTR), measured according to the standard ASTM F-1927 at 90% relative humidity and 38° C., of less than 5 cc/m2/day.
Dependencies are inferred from the claim text.