Patent ID: 7879420
Filing Date: 2011-02-01
Classification: B32B,C09J,D21H,Y10T

Abstract:
1. A roofing product including a roll of material, the product comprising: a paper layer having a grammage between 30 and 150 g/m a barrier layer formed on the first surface of the paper layer, the barrier layer comprising a polymeric film having a grammage between 10 and 30 g/m a release layer on the barrier layer, the release layer comprising a cured solvent-free silicone, and having a grammage between 0.5 and 1.5 g/m a layer of bituminous material on the release layer; a plastic film layer partially covering the bituminous material; and, a discontinuous non-stick cured silicone layer partially covering the second surface of the paper layer and arrayed as stripes on edge areas of the second surface of the paper layer, the non-stick layer having a grammage from 0.3 to 3.0 g/m