A can and treatment method of the contents using electric fields

A can 1 for foodstuffs is detailed which comprises a metal side wall 2 with a high dielectric strength isolating surface or layer 8,4, and metal end(s). A central part of an end(s) has an electrically conductive surface or layer and a peripheral part of an end(s) has an electrically isolating high d...

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Bibliographische Detailangaben
Hauptverfasser:	Norman John Maloney, Robert Stuart Ellis Bell, Edward Jones
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY DISINFECTION, STERILISATION, OR DEODORISATION OF AIR ELECTROLYTIC OR ELECTROPHORETIC PROCESSES ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTIONOF COMPOUNDS OR NON-METALS FOODS OR FOODSTUFFS FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BYSUBCLASSES A23B - A23J HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OFNUTRITIVE QUALITIES, PHYSICAL TREATMENT THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
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Beschreibung
Zusammenfassung:	A can 1 for foodstuffs is detailed which comprises a metal side wall 2 with a high dielectric strength isolating surface or layer 8,4, and metal end(s). A central part of an end(s) has an electrically conductive surface or layer and a peripheral part of an end(s) has an electrically isolating high dielectric strength surface or layer, and a conformable sealing layer. The sealing layer may itself be made from a high dielectric strength electrically isolating material, the end(s) and the side wall and the sealing layer 9 co-formed in a double seam seal (figure 1). An electric field can be applied to result in joule pasteurizing or sterilizing of the contents of the can. The can may be subjected to a voltage of up to 5000V at one end to produce the heating effect. A combination of voltages can be applied to cause joule heating and electroporation.