Herz Gmbh

Herz, Franz-Josef

Franz-Josef Herz

Jan Werner

The invention relates to a wedge-shaped heating element (or heating wedge) for an apparatus for contact welding of plastic films or plastic sheets () and to a method for producing it. In order to provide that the heating element () is usable for different plastic materials and has high strength, high abrasion resistance, and high temperature and thermal shock resistance to approximately 800&#xb0; C., as well as corrosion resistance to the chemical factors that occur in welding various polymer materials, the invention proposes that a ceramic material be used as the material for the heating element (). In order furthermore to provide that the heating element () also has a thermal conductivity that is comparable to metals, it has proved especially advantageous if the heating element () comprises a composite material, the latter being composed of a ceramic basic material and a heat-conducting material, in particular a metal or metalloid, so that the heating element () on the one hand has the mechanical and chemical properties of the ceramic basic material and also approximately the heat-conducting properties of the heat-conducting metal.

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Neuwied, Germany

Franz-Josef Herz