Patent ID: 8334038

Claim:
A release liner comprising: (a) a clay coated paper substrate having a first surface and a second surface, the clay coated paper substrate comprising a paper base sheet having a first side, a second side, and a basis weight of about 50 lb/3,000 ft 2 to about 100 lb/3,000 ft 2 , and a clay coating on each of the paper base sheet first side and second side at a weight of about 0.75 lb/3,000 ft 2 to about 10 lb/3,000 ft 2 per side; (b) a silicone coating provided on one of the first surface or the second surface of the clay coated paper substrate to provide a release layer having release properties; and (c) a friction coating provided on the other of the first surface or the second surface of the clay coated paper substrate to provide a friction surface, wherein the friction coating comprises a mineral component having a diameter of about 0.25 microns to about 3 microns and a binder, wherein the weight ratio of the mineral component to the binder is about 1:4 to about 8:1.