Abstract: An insulated panel for a domestic or household appliance is formed by a process in which two sheets of plastic material are extruded from a co-extrusion die and moved directly into a die thermoforming fixture. When the open die members are closed, the edges of the two sheets are sealed together to form a hollow panel and the walls of the panel are forced outwardly to conform to the shape of the die members. After the hollow panel is trimmed it is moved to a foam machine preferably while still contained in the thermoforming fixture so that foam insulation is inserted into the hollow panel while the walls of the panel are supported by the die members so that these walls are not deformed while the foam insulation is added.

Abstract: An insulated panel for a domestic or household appliance is formed by a process in which two sheets of plastic material are extruded from a co-extrusion die and moved directly into a die thermoforming fixture. When the open die members are closed, the edges of the two sheets are sealed together to form a hollow panel and the walls of the panel are forced outwardly to conform to the shape of the die members. After the hollow panel is trimmed it is moved to a foam machine preferably while still contained in the thermoforming fixture so that foam insulation is inserted into the hollow panel while the walls of the panel are supported by the die members so that these walls are not deformed while the foam insulation is added.

Abstract: A refrigeration appliance includes a plurality of side panels and a base panel, one of the side panels containing within the inner and outer walls thereof a complete mechanical refrigeration unit. The side panels and the base panel are provided with integral interlocking means in the edges thereof so that the panels may be manufactured at one location and shipped in knockdown form to another location where the side panels may be readily assembled on the base panel by unskilled personnel without the use of tools or separate fastening means by simple engagement of the interlocking means in the panel edges. A lid or closure panel may then be secured to one of the side panels to provide a completely enclosed refrigerated compartment.