Patent ID: 6248393
Filing Date: 2001-06-19
Classification: H05K,Y10T

Abstract:
A method of making a flame retardant, electrically-conductive EMI shielding material comprising the steps of:(a) providing a generally planar, porous fabric member having at least an electrically-conductive first side and a second side defining a thickness dimension therebetween;(b) applying a curable layer of a fluent, flame retardant composition under a hydrodynamic pressure and viscosity to at least a portion of the second side of said fabric member;(c) controlling said hydrodynamic pressure and viscosity of said composition to delimit the penetration of said layer into said fabric member to a depth which is less than the thickness dimension of said fabric member; and(d) curing said layer to form a flame retardant coating member on the second side of said fabric member whereby the first side of said fabric member remains electrically-conductive.