METHOD FOR PRODUCING A PIPE LINED WITH AN INNER LINER

• Main Authors: VAN LAAK HERMANN, GOSI DE AQUINO FABIO, DE GANS LI LAN, DEMICOLI DANIEL, GORING RAINER, BEYER HORST, HARTMANN MARKUS
• Format: Patent
• Language: Chinese; English
• Published: 08.12.2020
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The invention relates to a pipe, the inner surface of which is lined with a thermoplastic layer, which pipe is produced by a method comprising the following steps: a) a metal pipe is provided, b) a tubular inner liner made of a thermoplastic material is provided, c) a tape is applied spirally by cohesive bonding to the inner liner, the region of the contact surface of the tape consisting of a moulding compound or an adhesive which adhere firmly to the surface of the inner liner, and the region of the opposing surface of the tape consisting of a moulding compound or an adhesive which adhere firmly to the metal of the pipe, the tape containing unidirectional reinforcement fibres; d) if applicable, the cross section of the inner liner is reduced by the action of an external force, e) the inner liner is introduced into the metal pipe, f) the inner liner and the metal pipe are firmly connected to one another by means of contact pressure and, if applicable, heating. Thus, relative movementsbetween the metal pipe an