Multi-layer pipe and method for its production

B - Operations – Transporting – 21 – C

Patent

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B21C 37/09 (2006.01) B21C 37/08 (2006.01)

Patent

CA 2592003

The invention relates to a method for producing a multi-layer pipe (5) with the aid of a bending roller. According to said method, individual material layers (1, 2), which are to be combined to form the multi-layer pipe (5), are laid on top of one another and the multi-layer material that is thus produced is shaped to form a multi-layer pipe (5) with the aid of the bending roller. During the final phase of the pipe shaping process by the bending roller and/or a bending machine that is subsequently used, a material layer that acts as an internal pipe (1) is pressed in a force fit into a material layer (2) that acts as an external pipe.

L'invention concerne un procédé pour produire un tuyau multicouche (5) au moyen d'un cylindre de cintrage. Selon ce procédé, des couches de matériau individuelles (1, 2) devant être combinées pour former un tuyau multicouche (5) sont superposées, et le matériau multicouche ainsi produit est façonné au moyen du cylindre de cintrage pour former un tuyau multicouche (5). Lors de la phase finale de la formation de tuyau au moyen du cylindre de cintrage et/ou au sein d'une machine de cintrage utilisée subséquemment, une couche de matériau (1) faisant respectivement office de tuyau interne est pressé par liaison de force dans une couche de matériau (2) faisant respectivement office de tuyau externe.

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