Device for controlling the radial extrusion thickness of thermoplastic polymers.

摘要

The present invention relates to a device for extruding thermoplastic polymers so as to produce a tubular element (10) which has a radial thickness which can vary along its circumference; the device comprises an inner body (11) and an outer body (12) which define a passage (13) for the polymer, are coupled so as to allow an axial movement with respect to one another and are shaped with respect to one another so as to allow to vary the cross-section of some preset regions of the passage (13).