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Vacuum extrusion

The VMI-AZ transfermix vacuum extruder (MCTD-VAC) is equipped with an adjustable throttle to negate the disadvantages of standard degassing extruders with a fixed throttle position.

The main advantages of the MCTD-VAC extruder are:

  • Easy adjustable to each compound by actuating the slit throttle
  • Better homogeneity and controlled temperature of the compound
More process advantages can be gained by combining the MCTD-VAC extruder with a gear pump.

The advantages of using a gear pump in conjunction with a MCTD-VAC Extruder can be given as follows:

  • The danger of flooding the de-gassing section due to excessive head pressure is completely eliminated

  • Due to the volumetric conveying principle of gear pumps the profiles are extruded with a closer tolerance

  • Increased output caused by the fact that the gear pump can build-up pressure by consuming less energy in comparison to extruders
The following VMI-AZ MCTD-VAC extruder sizes are availible:

  Type Screw Ø Output kg/h
  MCTD-VAC 40 40 mm 85 kg/h
  MCTD-VAC 60 60 mm 170 kg/h
  MCTD-VAC 70 70 mm 260 kg/h
  MCTD-VAC 90 90 mm 550 kg/h
  MCTD-VAC 120 120 mm 840 kg/h
  MCTD-VAC 150 150 mm 1290 kg/h

Note: the output is dependent on the compound


Shark-150-Vac-schematic

MCTD-VAC process schematic with gear pump

Shark-150-Vac

MCTD-VAC 150 with gear pump

MCDT 120 Vac

MCTD-VAC 120

VMI Group

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Production Location

Bahnhofstrasse 6
93486 Runding - Germany
Phone +49 9971 76 13 90

North American sales Office

4670 Allen Road
Stow. OH 44224 USA
Phone +1 330 929 08 15