Non-stick coating system with two perfluorocarbon resins in topcoat for concentration gradient

摘要

Improved non-stick coating systems can be applied on a primer with a topcoat containing two types of perfluorocarbon resin, one with a melt viscosity above about 10.sup.10 poises, the other with a melt viscosity in the range of 10.sup.3 to 10.sup.8 poises.