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Concept |
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The concept is radically different from a traditional extrusion group. A short conical rotor turning between two conical stators (inner and outer) has replaced the traditional extrusion screw. Spiral grooves are located on the inner and outer surface of the rotor as well as on the surface of each stator facing the grooved one of the rotor. A die is fixed to the inner and outer stator.
With a 1-rotor machine, one can extrude a 2-layer product, with a 2-rotor machine, a 4-layer product, with a 3-rotor machine, a 6-layer product as you can simulate below: |
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