Patent ID: 6066379
Filing Date: 2000-05-23
Classification: D21C,D21H,Y02W,Y10T

Abstract:
A corrugated board which comprises:fluting having a first side and a second side;a first linerboard having an inner surface adjacent to, facing and adhered to said first side of said fluting and an outer surface opposite said inner surface;a second linerboard having an inner surface adjacent to, facing and adhered to said second side of said fluting and an outer surface opposite said inner surface; andat least one of said outer surfaces of said first or second linerboard having a coating thereon which includes pigments, a wax component selected from the group consisting of paraffin wax and polyethylene wax emulsions and mixtures thereof, and a polymer matrix of polymer chains comprising a polystyrene-butadiene polymer copolymerized with a monomer having carboxylic acid pendant groups wherein said pendant carboxylic acid groups of said polymer chain are cross-linked by a zinc ion bonded between carboxylic acid groups of adjacent polymer chains; wherein the corrugated board exhibits improved repulpability and resistance to blocking.