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US 11,767,639 B2Granted
Coated paperboard containers having an aqueous barrier coating
AssigneeWestRock MWV, LLC
InventorsSteven Parker, Jiebin Pang, Natasha G. Melton, Teresa Krug, Sergio A. Giuste, Wade Harris, Terrell J. Green
Life of this patent
Estimating the term…
Abstract
A coated paperboard container includes a paperboard substrate and an aqueous barrier coating on the paperboard substrate. The coated paperboard container has a repulpability yield of 75% accepts or greater, a sidewall seam bond strength of 30 pounds per inch or greater, and a wet rigidity loss of 50% or less.
Claims70
A coated paperboard container for holding beverages, comprising:
- a paperboard substrate, the paperboard substrate defining a container wall having an interior surface facing an interior of said container and an exterior surface facing an exterior of said container;
- a heat sealable aqueous barrier coating on the interior surface of the paperboard substrate, wherein the heat sealable aqueous barrier coating consists essentially of binder and pigment;
- and
- at least one of another aqueous barrier coating and a non-barrier coating on the exterior surface of the paperboard substrate,
- wherein the coated paperboard container has a repulpability yield of 75% accepts or greater and a wet rigidity loss of 50% or less.
2 more elements
A coated paperboard container for holding hot beverages, comprising:
- a sidewall comprising:
- a sidewall paperboard substrate having an interior surface facing an interior of said container and an exterior surface facing an exterior of said container, an upper end, a lower end, a first longitudinal end, and a second longitudinal end;
- a first aqueous barrier coating on the interior surface of the sidewall paperboard substrate, wherein the first aqueous barrier coating consists essentially of binder and pigment, wherein the first longitudinal end of the sidewall paperboard substrate is heat sealed, by way of the first aqueous barrier coating, to the second longitudinal end of the sidewall paperboard substrate to form a sidewall seam;
- and
- a non-barrier coating on the exterior surface of the sidewall paperboard substrate,
- wherein the coated paperboard container has a repulpability yield of 75% or greater, a side seam bond strength of 30 pounds per inch or greater, and a wet rigidity loss of 20% or less.
3 more elements
A coated paperboard container for holding cold beverages, comprising:
- a sidewall comprising:
- a sidewall paperboard substrate having an interior surface facing an interior of said container and an exterior surface facing an exterior of said container, an upper end, a lower end, a first longitudinal end, and a second longitudinal end;
- a first aqueous barrier coating on the interior surface of the sidewall paperboard substrate, wherein the first aqueous barrier coating consists essentially of binder and pigment;
- and
- a second aqueous barrier coating on the exterior surface of the sidewall paperboard substrate, wherein the second aqueous barrier coating consists essentially of binder and pigment,
- wherein the first longitudinal end of the sidewall paperboard substrate is heat sealed, by way of at least one of the first aqueous barrier coating and the second aqueous barrier coating, to the second longitudinal end of the sidewall paperboard substrate to form a sidewall seam,
- wherein the coated paperboard container has a repulpability yield of 75% or greater, a side seam bond strength of 30 pounds per inch or greater, and a wet rigidity loss of 50% or less.
4 more elements
Dependencies are inferred from the claim text.