Graphene-coated paper or paperboard
AssigneeBillerud Aktiebolag (publ)
InventorsThomas Gillgren, Johan A. Larsson
Life of this patent
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Abstract
The present disclosure provides a coated paper product comprising: —a paper or paperboard substrate: —a barrier coating, wherein the barrier coating comprises graphene and a polyolefin copolymer bearing carboxylic acid moieties, wherein the polyolefin copolymer bearing carboxylic acid moieties preferably is ethylene-acrylic acid copolymer (EAA) or ethylene-methacrylic-acid-copolymer (EMAA) or maleic acid ethylene copolymer (MAE), and wherein the graphene content in the barrier coating is 0.3-3 wt %. There is also provided a coated paper product comprising high surface area graphite flakes having an average particle size of 2-7 μm instead of the graphene.
Claims27
A coated paper product comprising:
- a paper or paperboard substrate;
- a barrier coating, wherein the barrier coating comprises graphene and a polyolefin copolymer bearing carboxylic acid moieties,
- wherein the graphene content in the barrier coating is 0.3-3 wt %.
A method of producing a coated paper product comprising the steps of:
- providing a paper or paperboard substrate;
- and
- coating the substrate with a barrier coating, wherein the barrier coating comprises graphene and a polyolefin copolymer bearing carboxylic acid moieties, wherein
- wherein the graphene content in the barrier coating is 0.3-3 wt %.
(canceled)
A coated paper product comprising:
- a paper or paperboard substrate;
- a barrier coating, wherein the barrier coating comprises high surface area graphite flakes having an average particle size of 2-7 μm as determined by laser diffraction and a polyolefin copolymer bearing carboxylic acid moieties.
A method of producing a coated paper product comprising the steps of:
- providing a paper or paperboard substrate;
- and
- coating the substrate with a barrier coating, wherein the barrier coating comprises high surface area graphite flakes having an average particle size of 2-7 μm and a polyolefin copolymer bearing carboxylic acid moieties.
(canceled)
Dependencies are inferred from the claim text.