Patent ID: 9554463
Date: 2017-01-24
CPC Classifications: D21H,H01L,H05K,Y10T

Claim:
1. A dielectric substrate comprising a fibrous non-woven mat material having a thickness of less than 5 mils (127 micrometers) that is impregnated with a resin composition, wherein the fibrous non-woven mat material comprise fibers, 10 nm to 10 μm in diameter that have been made by a process of extruding an inorganic or organic material through one or more openings and collecting the extruded fibers in the form of a fibrous non-woven mat material, wherein the direction of the fibers on the surface of the fibrous non-woven mat material exhibit a standard deviation of at least 10 degree with respect to a central longitudinal axis of the fibrous non-woven mat material.