Patent ID: 9689604
Date: 2017-06-27
CPC Classifications: B32B,F25D,Y10T

Claim:
1. A multi-layer vacuum insulating panel comprising: a first barrier film comprising at least one polymeric material layer wherein the first barrier film is free of a metal layer whereby moisture is transmitted through the first barrier film, and wherein the first barrier film has an interior facing surface; a second barrier film comprising at least one interior polymeric layer, a metal foil layer, and at least one exterior polymeric layer positioned on the opposite side of the metal foil layer as the at least one interior polymeric layer; wherein the second and the first barrier film define an interior volume between the first barrier film and the second barrier film and wherein the interior volume has a width, a length and a height; a sealing junction between the first barrier film and the second barrier film at a sealing section about a perimeter of the first barrier film and the second barrier film where the first barrier film and the second barrier film physically and sealingly engage one another; and a multi-section central core having at least one desiccant region containing fumed silica that comprises at least one fumed silica compound and at least one fiberglass region that are each discrete regions within the interior volume; and wherein the at least one desiccant region is positioned within the interior volume and further positioned along and proximate the sealing section and bridging the sealing junction where the first barrier film and the second barrier film engage one another; and wherein the portion of the interior volume free of the at least one desiccant region defines a remaining interior volume; and wherein the at least one fiberglass region is positioned within the remaining interior volume, and wherein the desiccant region is disposed between the fiberglass region and the first barrier film such that moisture transmitted through the first barrier film cannot reach the fiberglass region without passing through the desiccant region.