Patent ID: 8252144

Claim:
A single-ply paper product comprising: a machine-glazed paper substrate comprising a web of fibers and a sufficient amount of a flame retardant composition to provide the paper substrate with a flame resistance allowing a char length of less than 4.5 inches according to TAPPI T461; the paper substrate comprising a first surface and a second surface and having a differential smoothness between the first surface and the second surface of at least about 70 SSU according to TAPPI T538, wherein the differential smoothness results from application of the paper substrate to a machine to impart machine-glazed properties to the first surface so that the first surface has a smoothness greater than 100 SSU according to TAPPI T538 and is smoother than the second surface, and wherein the flame retardant composition is applied to the second surface and not to the first surface after application of the paper substrate to the machine to impart machine-glazed properties.