Method of manufacturing a domestic appliance

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 f...

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Bibliographische Detailangaben
Hauptverfasser:	LAUNDROCHE, KEVIN S, BURIN, RALPH R, IANNELLI, RONALD F, KRUCK, RICHARD W
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING COFFEE MILLS COLD ROOMS COMBINED HEATING AND REFRIGERATION SYSTEMS COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHERSUBCLASS DOMESTIC ARTICLES OR APPLIANCES DOMESTIC WASHING OR CLEANING FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FURNITURE HEAT PUMP SYSTEMS HEATING HUMAN NECESSITIES ICE-BOXES LAUNDERING LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILEARTICLES LIGHTING LIQUEFACTION SOLIDIFICATION OF GASES MANUFACTURE OR STORAGE OF ICE MECHANICAL ENGINEERING PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE REFRIGERATION OR COOLING REFRIGERATORS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPICE MILLS SUCTION CLEANERS IN GENERAL TEXTILES TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	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. The process provides integrally formed components on the walls of the panel in a single manufacturing operation and also provides in the same manufacturing operation integrally formed interlocking members in the edges of the panel which permits the assembly of panels together by unskilled personnel and without requiring separate fastening elements.