Patent ID: 6716481
Filing Date: 2004-04-06
Classification: B32B,D04H,D06M,D06N,D10B,G11B,H05K,Y10T

Abstract:
A method of preparing an electromagnetically conductive textile fabric, wherein the fabric comprises conductive fibers creating a conductivity gradient through the thickness of the fabric, and wherein the fabric is selected from the group consisting of woven, knitted and nonwoven fabrics, comprising the steps of:(a) forming a fabric selected from the group consisting of (i) a fabric in which the surface area of the fibers per unit volume varies through the thickness of the fabric; and (ii) a fabric containing first and second fibers, wherein the first and second fibers have different susceptibilities to being coated by a conductive coating, and wherein the relative concentration of the first and second fibers varies through the thickness of the fabric; and (b) applying a conductive coating to fibers in the fabric, thereby creating a conductivity gradient through the thickness of the fabric.