HELIX® Extrusion Unit is the base line which combines all advantages of an Extrusion Unit with a grooved melting zone. Helix has been designing and manufacturing several thousands of HELIX® Extrusion Units which operate successfully in the plastics industry.

• Energy savings
  HELIX® Extrusion Units reduces the total energy consumption per kg product by 10–25 %.
• Output
  The output of your single screw extruder can be improved by 20–100 % by using a HELIX® Extrusion Unit.
• Lower Melt Temperature
  With HELIX® Extrusion Units the melt temperature is reduced.
• Less wear on barrel and screw
  There is a drastic reduction of wear on a HELIX® Extrusion Unit.
• Pressure Stability
  It is typical of HELIX® Extrusion Unit that up to a die pressure of 800 bar the output will be completely stable. Over the whole range of rpm the specific output is constant.

How do HELIX® Extrusion Units do this?

• Thinner melt film and improved heattransfer
  The interaction between barrier screw and grooved barrel results in a thinner melt film. Therefore the heat from the heaterbands gets to the solid fraction easily.

• Pressure build-up in the melting zone
  Higher shear forces in a thinner melt film allow a pressure build-up in the melting zone which leads to an entirely different pressure curve. This effect is supported by gripping of the solid fraction on the groove edge. It results in a high process stability and avoids surging.

• HELIX® Extrusion Unit pressure curve
  The maximum pressure in the feed zone is dramatically reduced. Thus, wear on barrel and screw is strongly reduced.

• Energy efficiency
  High specific output at a low pressure level reduces the melt temperature. The energy of the heaterbands is fully used for melting the polymer. A cooling of the feed zone and a thermal separation between feed zone and plasticating zone is not needed.

  Compared to conventional extruders HELIX® Extrusion Units have a much better energy consumption.