Getter structure for vacuum insulation panels

Abstract From the Canadian patent

A Better structure is provided which can be handled for relatively short periods of time in open atmosphere and yet provides prolonged Bettering action over relatively long periods of time when utilized in a sealed compartment. The Better structure has a thin flexible substrate upon which a Better material is applied. A barrier layer is applied to the Better material to prevent rapid reaction by the Better material with the atmosphere. The substrate or barrier layer is semi-permeable and is selected to provide the desired degree of permeation of the layer to the Better material to result in the action described. Such a Better structure is useful in a vacuum insulation panel, particularly in …