Thick film high temperature thermoplastic insulated heating element

The present invention provides an integrated thick film heating element on a substrate made from high temperature melt-flowable thermoplastic polymer/powder additive formulations which form an electrically insulating thermoplastic dielectric coating on the substrate, and electrically resistive lead...

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Bibliographische Detailangaben
Hauptverfasser:	OLDING TIMOTHY RUSSELL, RUGGIERO MARY ANN
Format:	Patent
Sprache:	eng
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY PERFORMING OPERATIONS PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	The present invention provides an integrated thick film heating element on a substrate made from high temperature melt-flowable thermoplastic polymer/powder additive formulations which form an electrically insulating thermoplastic dielectric coating on the substrate, and electrically resistive lead free films and electrically conductive film formulations that are deposited and fired to form an integrated thick film heating element on a substrate at a processing temperature well below 600° C. This thick film heating element is formed on a substrate material coated first with the electrically insulating, filled melt flowable high temperature thermoplastic polymer/powder composite layer on which is deposited the electrically resistive lead free thick film that is capable of operating over a wide range of power densities for consumer and industrial heating element applications, with suitable electrical insulation properties under temperature cycling to for example 250° C.