Abstract: A method of forming a flange in the bottom of a container by first removing a portion of the container bottom and then forming or swaying the material around the opening to form a flange extending away from the container bottom. A valve and valve cup assembly along with a heat exchange unit are positioned adjacent the flange and the combination is crimped to permanently affix the heat exchange unit to the bottom of the container.

Abstract: A method of manufacturing a container for receiving a food or beverage and including a heat exchange unit as an integral part thereof. The container is formed with an opening in a closed end thereof which opening is mated with a heat exchange unit containing an adsorbent material and is permanently secured thereto along with a valve and valve cap. The heat exchange unit is charged with a medium which, when activated, will heat or cool the food or beverage in the container depending upon whether the heat exchange unit is exothermic or endothermic.

Abstract: A method of forming a flange in the bottom of a container by first removing a portion of the container bottom and then forming or swaying the material around the opening to form a flange extending away from the container bottom. A valve and valve cup assembly along with a heat exchange unit are positioned adjacent the flange and the combination is crimped to permanently affix the heat exchange unit to the bottom of the container.

Abstract: An outer container constructed of a non-metallic material and an inner container constructed of metal permanently secured to said outer container. The inner container houses a material which when activated alters the temperature of food or beverage housed within the outer container and in contact with an outer surface of the inner container. Preferably, the outer container is constructed of food grade glass or plastic or paper products having a waterproof interior and the inner container is permanently affixed thereto by a threaded plug or a washer like member welded thereto respectively.

Abstract: A heat exchange unit for use in containers for cooling a food or beverage. The heat exchange unit includes inner end outer vessels with inner vessel having a plurality of thermally conductive discs in thermally conductive contact with an inner surface thereof. An adsorbent material is disposed between adjacent discs is compacted between them to provide maximum adsorbent material per unit volume. The outer surface of the inner vessel defines a plurality of grooves and is in thermally conductive contact with the inner surface of the outer vessel. The grooves provide flow paths for a gas such as carbon dioxide which is adsorbed onto the adsorbent material to flow and exit the heat exchange unit and to carry with it, the heat contained in the food or beverage, thereby lowering its temperatures.

Abstract: A heat exchange unit for incorporation internally of a food or beverage container in such a manner that the external surface thereof is in contact with the food or beverage. A food grade coating is adhered to and completely covers the entire exterior surface of the heat exchange unit to preclude direct contact of the food or beverage with surface of the heat exchange unit.

Abstract: A heat exchange unit and a beverage or food container including a heat exchange unit therein. The heat exchange unit includes a vessel having a plurality of thermally conductive discs with a layer of compacted adsorbent material such as carbon particles disposed between adjacent discs. The periphery of the discs are in thermally conductive contact with the inner surface of the vessel and each discs has at least one surface which defines a plurality of radially extending grooves terminating at the periphery to define a preferential flow path for gas under pressure to travel along the inner surface of the vessel wall. The periphery of the discs also define a plurality of notches, one at each groove terminal, to enhance the preferential flow path.