Gunther Heisskanaltechnik Gmbh

Christel Kretschmab

Peter Otschik

Herbert G&uuml;nther

An electric surface heating element is installed by direct application to the periphery of a cylindrical material pipe ( ) of a hot runner nozzle ( ). Said surface heating element consists of a ceramic dielectric layer ( ) which is directly applied to the metal pipe ( ) or to the wall ( ) thereof, at least one layer ( ) consisting of heating conductor strips ( ) and an electrically insulating ceramic covering layer ( ) 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 ( ) can be fixed to the periphery of the hot runner pipe ( ) in the form of a prefabricated green film and subsequently baked.

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Borken, Germany

Christel Kretschmab