Kabel-Und Metallwerke Gutehoffnungshutte Aktiengesellschaft

Lothar Werwitzke

Hermann U Voigt

Hans-Dieter Stenzel

Insulation is extruded onto a conductor and immediately quench-cooled to obtain solidification for retaining concentricity of conductor and envelope. The envelope is reheated under pressure to melt a surface zone, followed by gradual cooling whereby the melted zone migrates into the interior. Reheating under pressure and gradual cooling, possibly also under pressure, improves texture, and provides for a more ordered crystal structure and/or fuller crosslinking. Following extrusion, and on reheating, the cable is freely suspended and assumes catenoidal contour while advancing to avoid sliding contact of the outer surface until adequately stable solidification has taken place.

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Langenhagen, Germany

Lothar Werwitzke