IMPROVEMENTS IN AND RELATING TO PACKAGING

This invention relates to a self-supporting tray-like product container and to a method and machine for making the container. In producing a product container, material requirement are imposed which are difficult if not impossible to meet with a single material, especially one which is readily therm...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SCHEIBEL, ERHARD, BISKUP, HANS-JOACHIM, BRUCE, DAVID STAFFORD, IORNS, DAVID SPENCER
Format:	Patent
Sprache:	eng
Schlagworte:	ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING HANDLING THIN OR FILAMENTARY MATERIAL MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGINGARTICLES OR MATERIALS PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STORING TRANSPORTING UNPACKING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	This invention relates to a self-supporting tray-like product container and to a method and machine for making the container. In producing a product container, material requirement are imposed which are difficult if not impossible to meet with a single material, especially one which is readily thermoformable, and which for packaging of food product possesses the desired thermal distortion resistance to withstand heating in a conventional or microwave oven and barrier properties preventing contamination. The aforementioned problem is overcome by a container comprising an inner dished part 3 receiving said product in a first well, and an outer dished part 5 having a second well into which the first well is entrant, the inner and outer parts contacting and being joined to each other at their respect peripheral edge portions 7, 9, otherwise with their wells in all-round mutually-spaced relation. More particularly the inner and outer parts are made of different materials.