Introduction to Twin Screw Configuration and Design

You will agree that a twin-screw extruder design plays a significant role in ensuring that all the ingredients are distributed evenly, dispersed well, and the compound is processed at the correct melt temperature.

However, getting all these factors right can fail miserably, if your twin screw configuration and design is not up to the mark. So, why rely on hit & trial, when the solution is right in front of you! Attend this course to:

• Get a detailed view of screw design & configuration with a better understanding of extrusion science and compounding process parameters.


• Easily adapt your extruder to suit new material by better understanding how different element designs function to promote unit operations such as solids conveying, polymer melting, mixing, devolitalization, pumping…


• Address challenges & troubleshoot compounding instabilities (melt disturbance, surging…) by implementing the tips & tricks shared by the expert.

R&D Chemists, Compounders, Engineers and Technicians working with twin screw extruders and new materials, looking to accelerate their learning curve & solve complex compounding challenges.


Complete the course and (unlock your personalized certificate) – your badge of accomplishment awaits!

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The following sections will be covered during this course:

1. Extrusion of plastics – Overview


2. Operations of a compounding line
   • Components in detail (feed hopper, continuous barrel, long tapered screw, die)


3. Single screw compounding
   • Operation of a single screw extruder


4. The compounding extruder as a series of unit operations
   • Feeding
   • Melting
   • Downstream feeding
   • Mixing
   • Venting
   • Pumping


5. Configurability of the twin-screw extruder
   • Clam Shell Barrels
   • Segmented Barrels
   • Closed Barrels
   • Open Barrels
   • Side feed Barrels
   • Assembled Barrels


6. Function of screw elements
• Conveying
• Melting
• Mixing
  • Distributive
  • Dispersive
  • Liquid


7. Designing a screw configuration
   • Product transport
   • Downstream addition of additives
   • Devolitalization
   • Pumping


8. Examples of Screw Designs
   • Filled polymer
   • Glass filled polymer
   • Liquid addition compounding
   • Pelletizing powder
   • Incorporating nanoparticles


9. 30 mins Q&A – Ask your questions directly to the expert!

Have a query? Email us for any help!