Evonik Degussa Gmbh

Evonik Operations Gmbh

Marco Gensheimer

Andreas Dowe

Wolfgang Diekmann

Juergen Franosch

Jan Berger

Uwe Kannengiesser

Adam Mondrzyk

Uwe Kannengießer

A process for the production of a pipe comprising: an interior surface having a shape; and a thermoplastic inliner is provided. The process comprises: introducing the thermoplastic inliner into the interior of the pipe; heating the pipe from the outside to a temperature higher than a crystallite melting point (T) of a molding composition of an exterior surface of the inliner; expanding the inliner radially in the pipe so that an exterior surface of the inliner assumes the shape of the interior surface of the pipe; and cooling the inliner; wherein a cross section of the inliner is optionally reduced through exposure to an exterior force prior to being introduced into the pipe. Relative movements between carrier pipe and inliner are thus prevented; the risk of collapse of the inliner is moreover low. The pipe is used for the production of a laid pipeline.

Process for the production of a pipe lined with an inliner

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Duisburg, Germany

Marco Gensheimer