Thermally insulated cavity-walled case for e.g. Refrigerator

摘要

An oven or refrigerator has a heat-insulated mantle consisting of an inner and outer wall separated by a gap, and evacuated and filled with a heat insulating material e.g. Polystyrene or polyethylene foam. The front edges (16, 18) of the inner and outer walls (13, 17) are folded back outwards at right angles, creating two surrounding flanges. The gap between the surrounding flanges is then sealed with a cover plate (24).