Abstract: A process is presented for forming an anisotropic heat spreader or heat pipe, comprising forming a laminate comprising a plurality of flexible graphite sheets which comprise graphene layers; and directionally aligning the graphene layers of the laminate.

Abstract: A process is presented for forming an anisotropic heat spreader or heat pipe, comprising forming a laminate comprising a plurality of flexible graphite sheets which comprise graphene layers; and directionally aligning the graphene layers of the laminate.

Abstract: A release lined pressure sensitive adhesive flexible graphite sheet article is provided having low thermal resistance properties comparable to the flexible graphite material itself when compared to prior art PSA sheet products and wherein the release liner is easily removed with the sheet is to be used without any significant delamination of the flexible graphite. The flexible graphite sheet comprises a flexible graphite substrate, an adhesive primer coating thereon, a pressure sensitive adhesive coating on the adhesive primer coating and a release liner applied to the pressure sensitive adhesive coating. Double sided pressure sensitive adhesive flexible graphite sheets can also be made using the method of the invention.

Abstract: A process for forming pinhole free ultra-thin flexible sheet material from natural graphite comprising treating low ash natural graphite particles with an oxidizing agent to intercalate the graphite, introducing the particles after they are dried to less than 2% by weight water into a furnace preheated to at least 2000.degree. F. to cause rapid expansion to a specific volume of at least 800 cc/gm and compressing the expanded graphite to below 8 mils in thickness with a density of less than 1.3 g/cc.