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T-profile technology

Our latest development – T-profile technology – opens up completely new possibilities for twin screw and multi-shaft extruders. The success of these extruder models is based on the tightly intermeshing self-cleaning Erdmenger profile. The profile is assumed to be symmetrical when determining the geometry. This results in standard screw profiles and Erdmenger-based kneading elements.

The T-profile1, unlike in the case of double-flight elements, works with two different flight depths and is also completely self-cleaning but uses different barrel gaps. Looking in an axial direction, this profile is switched from flight to flight at short intervals, producing a forced exchange of material between the flights.
From these T-profile elements, a modular system of various elements is available, resulting in a completely new technical concept for all co-rotating twin and multi-shaft extruders.


The particular geometry of the T-profile elements has various technical advantages.

  • The uneven energy input of standard profile elements is halved.
  • There is a frequent change in the form of flow with alternating stress fields
  • This results in more intensive dispersion
  • The distributive mixing effect is also improved
  • More product redistributions achieves a better degassing capacity
  • Overall, there is still more gentle product handling


The T-profile system is used anywhere where processes are pushing the boundaries of extrusion. It is possible to handle products more gently and to improve dispersion as a result.

Improvement during degassing is also an important application aspect.

Naturally, the T-profile's full potential lies in the combination of the various characteristics.


The modular system of the T-profile includes feed and kneading elements of varying shapes.

A differentiation is made between 2 profile depths. These have different clearances to the barrier on the smaller ridge. The profile type T6 has a barrier gap of approx. 1/6 of the flight depth, while it is approx. 1/3 of the flight depth in the T3.

Of course, elements with various pitches are available.

In another version, the T-profile is combined with a barrier for a local increase in the degree of filling.

For kneading elements, the T3 and T6 profiles are also available, as well as various disc widths and offset angles.

As with the standard profile, the kneading blocks are complimented by a version with a barrier. This offers a higher degree of filling and leads to a more intensive dispersive mixing effect.