Compounding and extrusion


During compounding we use our co-rotating twin-screw extruders to adapt material properties to the requirements of further processing and in particular the final product. Research topics in the field of compounding and extrusion include:

  • Process development - to allow completely new mixing processes with twin-screw extruders
  • Material development - to generate improved material properties on the basis of new material

In many cases these two elements are equally important in our work.


Process development

Specific process development is an important research focus. This can involve the development of individual sub-steps, for example screw design development, or the implementation of completely new compounding concepts with novel materials.

Integrated processes in compounding

Integrated processes in compounding involve the use of various methods, units and processes for the targeted modification of the melt in the extruder, for example the use of microwaves or ultrasound.

Material development

This research area includes the addition of functional fillers and additives for the targeted modification of compound properties. Various different types of additives can be incorporated, including liquids, granulates and gases.

Reactive processing

Reactive processing is the continuous modification or synthesis of a polymer in the extruder without the use of a solvent. It is characterized in particular by gentle treatment of the material and high variability.

Natural-fiber-reinforced biomaterials

The main focus of these developments is the application of natural-fiber-based reinforcement materials. These can be used in both conventional polyolefin-based and bio-based polymer matrices.

Production technology

In our modern, well-equipped pilot plants a wide variety of production units are available for material and process development.