Patent ID: 7618702

Claim:
A composite comprising a cellulosic substrate comprising cellulosic fibers with a polyamide layer comprising polyamide fibers adhered thereto by an interrelation of fibers of the cellulosic substrate and fibers of the polyamide layer so that the cellulosic substrate and polyamide layer cannot be separated from each other by manually applied peeling forces(s) where the cellulosic substrate has a caliper ranging from 0.010 inch to 0.020 inch and the polyamide fibers have average fiber diameter ranging from 50 to 700 nm, a coverage level to average diameter ratio ranging from 2×10 −4 to 5×10 −3 gms/m 2 /nm and a ratio of total length of polyamide fibers to the surface area of the cellulosic substrate ranging from 1×10 6 to 1×10 8 km polyamide fiber/square meter of cellulosic substrate surface area.