公开(公告)号：WO2022103458A1

公开(公告)日：2022-05-19

申请号：PCT/US2021/045562

申请日：2021-08-11

申请人： SAPPI NORTH AMERICA, INC.

发明人： POMEROY, Paige Allison Case ,  OSGOOD, Alonzo K. ,  WAECKER, Thomas A. ,  RAJBANSHI, Arbin

IPC分类号： D21H19/82 ,  B65D65/42 ,  D21H27/10

摘要： Oil and grease resistant paper products are disclosed that include 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 and a pigment. The barrier coating, when applied to the substrate and dried to form a barrier layer, has a Pigment Volume Concentration (PVC) that is below a Critical Pigment Volume Concentration (CPVC) of the barrier coating, providing a continuous three-dimensional film of the binder system. In some implementations the binder system comprising a latex and a natural binder and/or the paper product further includes a topcoat disposed on a side of the barrier coating opposite the substrate.