Patent ID: 8460512
Filing Date: 2013-06-11
Classification: D21H,Y10T

Abstract:
1. A paper or paperboard having improved bulk and stiffness comprising: a three layered single-ply I-beam structure having a top layer, a central layer and a bottom layer, wherein the central layer is a cellulosic core layer, and the top and bottom layers are starch based, size-press applied coating layers formed from a starch coating solution having starch solids from 12 wt % to 18 wt % that cover an upper and lower surface of the central layer with minimal penetration into the central layer, and a bulking agent selected from the group consisting of diamide salt based bulking agent, monostearamide of aminoethylethanolamine, distearamide of aminoethylethanolamine and quaternized imidazoline interpenetrated within the central layer.