Coffee stain-resistant cellulosic structures and associated containers and methods
AssigneeWestRock MWV, LLC
InventorsJiebin Pang, Steven Parker, Natasha G. Melton
Life of this patent
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Abstract
A cellulosic structure including a cellulosic substrate comprising a first major side and a second major side opposed from the first major side, an oil barrier layer on the second major side of the cellulosic substrate, and a water barrier layer on the second major side of the cellulosic substrate, wherein the oil barrier layer is positioned between the cellulosic substrate and the water barrier layer.
Claims31
A cellulosic structure comprising:
- a cellulosic substrate comprising a first major side and a second major side opposed from the first major side;
- an oil barrier layer on the second major side of the cellulosic substrate;
- and
- a water barrier layer on the second major side of the cellulosic substrate, wherein the oil barrier layer is positioned between the cellulosic substrate and the water barrier layer.
5-7. (canceled)
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17-19. (canceled)
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27-35. (canceled)
37-39. (canceled)
41-47. (canceled)
49-53. (canceled)
A container comprising:
- a side wall having an upper end portion and a lower end portion;
- and
- a bottom wall connected to the lower end portion of the side wall,
- wherein at least the bottom wall comprises a cellulosic structure comprising:
- a cellulosic substrate;
- an oil barrier layer on the cellulosic substrate;
- and
- a water barrier layer positioned over the oil barrier layer such that the oil barrier layer is positioned between the cellulosic substrate and the water barrier layer.
56-58. (canceled)
A method for manufacturing a cellulosic structure comprising:
- applying an oil barrier coating formulation to a cellulosic substrate to form an oil barrier layer, the oil barrier coating formulation comprising at least one of polyvinyl alcohol, carboxymethylcellulose, alginate, and microfibrillated cellulose;
- and
- applying a water barrier coating formulation over the oil barrier layer to form a water barrier layer, wherein the oil barrier layer is positioned between water barrier layer and the cellulosic substrate.
60-63. (canceled)
Dependencies are inferred from the claim text.