Patent ID: 9200409
Filing Date: 2015-12-01
Classification: D21H,Y10T

Abstract:
1. A coated paper or paperboard, comprising: a base paper having a first major surface; a multilayer coating over the first major surface, where the multilayer coating has a total dry coat weight of 10 g/m a first water vapor barrier layer formed with a synthetic latex; a biopolymer barrier layer on the first water vapor barrier layer, where the biopolymer barrier layer includes a first biopolymer barrier layer on the first vapor water barrier layer and a second biopolymer barrier layer on the first biopolymer barrier layer so that the first biopolymer barrier layer and the second biopolymer barrier layer are between the first barrier layer and the second barrier layer, and wherein each of the first biopolymer barrier layer and the second biopolymer barrier layer have a dry coat weight of 2 g/m a second water vapor barrier layer on the biopolymer barrier layer, where the second water vapor barrier layer is formed with a latex, wherein the biopolymer barrier layer is positioned between the first water vapor barrier layer and the second water vapor barrier layer to protect the biopolymer barrier layer from water absorption; and where the coated paper or paper board has a Kit Rating Number of at least 12 and prevents penetration of canola oil at 60° C. for 24 hours through the multilayer coating and the base paper after creasing and folding.