Thermoplastic composite pipe with multilayer intermediate lamina

US10816113B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Jasmin Berger · Dortmund, DE
• Hans Ries · Marl, DE
• Juergen Franosch · Marl, DE
• Rainer Goering · Borken, DE
• Horst Beyer · Basel, CH

Key dates

• Filing date: Jan 9, 2018
• Grant date: Oct 27, 2020
• Expiry date: Apr 19, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L11/04
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A process for producing a thermoplastic composite pipe is provided. The thermoplastic composite pipe thus produced contains a liner, two or more composite layers composed of tape laminas, and a single- or multilayer intermediate lamina arranged between different composite layers. Composite formation between identical polymers in the process achieves improved adhesion. The thermoplastic composite pipe is especially suitable for offshore applications in oil or gas production.