Patent ID: 6667100
Filing Date: 2003-12-23
Classification: B32B,C04B,H01C,Y10T

Abstract:
An ultra-thin flexible expanded graphite heating element having a thickness of about 0.01 mils to about 2 mils, wherein the heating element is one of at least two flexible expanded graphite layers obtained by separating a flexible expanded graphite sheet having a first thickness into two or more thickness layers, the heating element being produced by a method comprising the steps of:(a) providing a flexible expanded graphite sheet having a first thickness and a surface adhered to a substrate; (b) pulling apart the sheet and the substrate with a force sufficient to separate the adhered flexible expanded graphite sheet into a removed thickness layer and a remainder thickness layer adhered to the substrate; and (c) optionally repeating steps (a) and (b) until the remainder thickness layer has a thickness of about 0.01 mils to about 2 mils.