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US 12,460,353 B2Granted
Oil/grease resistant paper products
AssigneeSappi North America, Inc.
InventorsPaige Allison Case Pomeroy, Thomas A. Waecker, Alonzo K. Osgood, Arbin Rajbanshi
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Abstract
Oil and grease resistant paper products include a substrate and, on at least one side of the substrate, a continuous layer of a barrier coating, the barrier coating including a binder system and a pigment. The barrier coating, when applied to the substrate and dried to form a barrier layer, provides a continuous film of the binder system.
Claims25
A paper product comprising:
- a substrate;
- and
- on at least one side of the substrate, a continuous layer of a barrier coating, the barrier coating comprising a binder system, the binder system comprising a latex and a natural binder in a ratio of from about 5:1 to 1:1, and a pigment,
- wherein the barrier coating includes from about 40 to 750 parts of the binder system per 100 parts pigment by weight;
- such that when the barrier coating is applied to the substrate and dried the barrier coating forms a continuous, void-free grease and oil resistant barrier layer.
2 more elements
A method of making a paper product comprising:
- applying, to at least one side of a substrate, a continuous layer of a barrier coating, the barrier coating comprising a binder system, the binder system comprising a latex and a natural binder in a ratio of from about 5:1 to 1:1, and a pigment, wherein the barrier coating includes from about 40 to 750 parts of the binder system per 100 parts pigment by weight;
- and
- drying the barrier coating to form a continuous, void-free grease and oil resistant barrier layer.
Dependencies are inferred from the claim text.