The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 2018
Filed:
Mar. 25, 2014
Juergen Franosch, Marl, DE;
Jan Berger, Dortmund, DE;
Andreas Dowe, Borken, DE;
Marco Gensheimer, Duisburg, DE;
Uwe Kannengiesser, Duisburg, DE;
Juergen Franosch, Marl, DE;
Jan Berger, Dortmund, DE;
Andreas Dowe, Borken, DE;
Marco Gensheimer, Duisburg, DE;
Uwe Kannengiesser, Duisburg, DE;
EVONIK DEGUSSA GmbH, Essen, DE;
Abstract
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.