ELEKTRISCHE HEIZUNG FÜR HEISSKANALSYSTEME UND VERFAHREN ZUR HERSTELLUNG EINER SOLCHEN HEIZUNG

An electric surface heating element is installed by direct application to the periphery of a cylindrical material pipe (13) of a hot runner nozzle (12). Said surface heating element consists of a ceramic dielectric layer (20) which is directly applied to the metal pipe (13) or to the wall (16) there...

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Bibliographische Detailangaben
Hauptverfasser:	GUENTHER, HERBERT, OTSCHIK, PETER, KRETSCHMAR, CHRISTEL
Format:	Patent
Sprache:	ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	An electric surface heating element is installed by direct application to the periphery of a cylindrical material pipe (13) of a hot runner nozzle (12). Said surface heating element consists of a ceramic dielectric layer (20) which is directly applied to the metal pipe (13) or to the wall (16) thereof, at least one layer (22) consisting of heating conductor strips (23) and an electrically insulating ceramic covering layer (24) which is applied on top of the latter. Film, or thick-coat screen printing technology are suitable as coating processes. However, thick-coat technology using round printing is preferably used for the layer construction as a whole. Alternatively, the ceramic dielectric layer (20) can be fixed to the periphery of the hot runner pipe (13) in the form of a prefabricated green film and subsequently baked.