Coated barrier paper
AssigneeBillerud Aktiebolag (publ)
InventorsJohan A. Larsson, Thomas Gillgren, Wouter Prosper
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a coated paper product comprising: —a paper substrate comprising a first and a second side; —a first coating layer on the first side of the paper substrate comprising a binder; and—a second coating layer on the first coating layer, wherein the second coating layer comprises polyvinyl alcohol (PVOH) and/or ethylene vinyl alcohol (EVOH); —a third coating layer on the second coating layer, wherein the third coating layer comprises talc and ethylene-acrylic acid (EAA) or talc and a polyolefin, and wherein the dry weight ratio of EAA or polyolefin to talc in the third coating layer is between 100:5 and 100:70.
Claims17
A coated paper product comprising:
- a paper substrate comprising a first and a second side;
- a first coating layer on the first side of the paper substrate comprising a binder;
- and
- a second coating layer on the first coating layer, wherein the second coating layer comprises polyvinyl alcohol (PVOH) and/or ethylene vinyl alcohol (EVOH);
- a third coating layer on the second coating layer, wherein the third coating layer comprises talc and ethylene-acrylic acid (EAA) or talc and a polyolefin, and wherein the dry weight ratio of EAA or polyolefin to talc in the third coating layer is between 100:5 and 100:70.
(canceled)
A method of producing a coated paper comprising the steps of:
- providing a paper substrate comprising a first and second side;
- and
- coating the first side of the paper substrate with a first coating layer, wherein the first coating layer comprises a binder;
- and
- coating a second coating layer on the first coating layer, wherein the second coating layer comprises polyvinyl alcohol (PVOH) and/or ethylene vinyl alcohol (EVOH);
- coating a third coating layer on the second coating layer, wherein the third coating layer comprises ethylene-acrylic acid (EAA) latex and talc, and wherein the dry weight ratio of EAA latex to talc in the third coating layer is between 100:5 and 100:70.
Dependencies are inferred from the claim text.