PIPE OF THERMOPLASTIC MATERIAL AND A METHOD AND DEVICE FOR EXTRUDING SUCH A PIPE

摘要

Pipe (1) of extruded thermoplastic material, as well as method and device for its manufacture. The pipe (1) has a wall in which a plurality of channels (5) is present which extend in the longitudinal direction of the pipe. The wall of the pipe (1) comprises a plurality of wall layers (2, 3, 4) of thermoplastic material, a plurality of channels (5) which extend in the longitudinal direction of the pipe (1) and which are each enclosed by the thermoplastic material of said wall layer (5) being present in at least one of the wall layers.