Method for manufacturing an extrusion profile with variable properties along its length and catheters made in accordance with this method.

摘要

Method for manufacturing an extrusion profile comprising simultaneously conveying a number of, in the circumferential direction of the profile distributed streams of material of at least two different compositions to a moulding-nozzle (2) and of making these streams flow together in the moulding-nozzle (2). At least one of the streams is turned on and/or off in a controlled manner and the combined stream of materials is allowed to cool off to form an extrusion profile (3). The catheter is a tube-like extrusion profile, containing at least one section the wall of which comprises bands of material of different composition, extending in lengthwise direction.