Making Properties and Profits: Twin Screw Extrusion Seminar - 2 Day Course

To be scheduled
Time: 8:00 AM - 5:00 PM
Location: Akron Polymer Training Center, Akron, OH 44325-5404, U.S.A.
Cost: $875 USD
SAVE! Company registrations of three (3) or more save 10% each!
CEU's: 1.6
Instructor: Adam Dreiblatt

Course Overview

This two-day seminar focuses on the application of intermeshing co-rotating extruders in compounding applications. Training is directed towards machine operators, process engineers and supervisors, as well as product development scientists in both research and manufacturing environments. Participants are reminded that the goal of compounding is to produce properties, not pellets. The goal of this seminar is to explain how twin-screw extruders create properties.

Interactions between screw design, raw materials and process parameters are presented in such a way that both experienced users and novices will benefit. Common unit operations are explained in practical terms with no prior knowledge or experience required. Upon completion of the training, participants will return to the workplace armed with techniques to improve quality, production rate and yield.

Adam Dreiblatt has been involved with the practical aspects of twin-screw extrusion for over 25 years. He was formerly Manager of Process Development at Werner & Pfleiderer Corporation and more recently Director of Manufacturing for the Novon Products Division of Warner-Lambert. Adam is now Director of Process Technology for Century Extrusion.

Adam has authored and presented numerous technical papers as well as published articles on various aspects of twin-screw extrusion. He has contributed several chapters in reference books including: "Screw Design", Encyclopedia of Polymer Science and Engineering (John Wiley); "Intermeshing Co-rotating Twin Screw Extruders", Mixing in Polymer Processing (Marcel Dekker); "Internal Mixers, Single and Twin Screw Extruders", Handbook of Process Plant Machinery (Butterworth Publishing). He holds a M.S. in Applied Science from New York University.

SAVE! Company registrations of three (3) or more save 10% each!

Course Outline

Seminar Program - Day One:

Twin-Screw Extruder Design:

  • Introduce concepts responsible for creating properties on co-rotating twin screw extruders
    • Degree-of-fill, shear rate, residence time/residence time distribution, heat transfer
    • Dispersive vs. distributive mixing
  • Influence of extruder configuration on compounding performance
    • How machine design impacts mixing (e.g. d0/di, co versus counter rotation, etc.)
    • What is optimum extruder configuration?

Process Design:

  • Description of unit operations: feeding, melting, mixing, venting, pressurization
  • Introduction of the process model - role of specific energy
  • Interaction of process parameters
  • Process optimization

Seminar Program - Day Two:

The "Art" of Screw Design:

  • Functional description of the working principles for each element type (conveying, mixing)
  • Overview of available screw element designs
  • Characterization of dispersive and distributive mixing elements
  • Selection of the optimum screw type for each of the unit operations

Best Practices:

  • Documentation
  • Start-up, Operation, Shut-down, Purging
  • Screw assembly/disassembly
  • Preventive Maintenance
  • Safety

Process Troubleshooting:

  • Diagnosis of compounding instabilities with respect to
    • Consistency (i.e. within-lot)
    • Reproducibility (i.e. lot-to-lot)

Bring your current processing problems or screw configuration questions to discuss privately with the instructor…this alone can justify the seminar fees!

Participants will return to the workplace prepared to design and optimize screw configurations, as well as develop operating conditions to meet compound specifications.


"Adam (instructor) was very knowledgeable on the subject and explained it very well. Excellent relationship between theory and industrial application."

- Dan Phillips, Manufacturing Engineer, Lubrizol Advanced Materials

"Instructor is very knowledgeable in this area. Great presentation!"

- William Gharibian, Process Development Engineer, Mars Petcare