Technical Problem Solving

Introduction to Twin Screw Configuration and Design

Introduction to Twin Screw Configuration and Design
Language: English
Length: 90 min
Recorded on: 22 Feb 24

Package Includes

6 months access to Course Recording, Presentation Slides, Q&A Transcript

Course Description

Overcome your polymer compounding challenges (melt disturbance, uneven material thickness, surging…) by unravelling the underlying science behind twin screw extruder configuration and design.

In this simulated live Kenneth Russell will explain how different element designs function to ensure proper distribution & dispersion of ingredients & materials. He will also lay focus on unit operations like polymer melting, mixing, devolatilization... to help you achieve high quality & productivity.

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Kenneth W Russell
Kenneth W Russell
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Kenneth W. Russell has more than 25 years of experience working with polymer processing and resin companies delivering results in new product development, process improvement, scale-up and customer technical support. Kenneth’s expertise includes polyolefin polymerization, polymer compounding, reactive extrusion, and film extrusion.

Kenneth has transferred product developments and processes into Europe, India and China from the US while maintaining product equivalency between locations. He has a strong belief in continuous process improvement and statistical process control. Kenneth is certified as a CPlasT from the Society of Plastics Engineers. He has earned a BS in Chemical Engineering from Rutgers University in Piscataway, NJ, a MS in Chemical Engineering from Auburn University, AL. and a Master of Engineering Management from Lamar University in Beaumont, TX. Kenneth has been consulting for over 5 years as an expert in leading process improvement, product development, new process development, operator process training and as a resin subject matter expert.

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Why should you view this course?

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 are not up to the mark. So, why rely on hit & trial, when the solution is right in front of you! Attend this course to:

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

  2. 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, devolatilization, pumping…

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

Who should join this course?

  • 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!

  • Single screw compounding

    • Operation of a single screw extruder

  • Designing a screw configuration

    • Product transport
    • Downstream addition of additives
    • Devolatilization
    • Pumping
  • This course is suitable for beginner level proficiency
    Beginner
Course Outline

Extrusion of plastics – Overview

Operations of a compounding line

  • Components in detail (feed hopper, continuous barrel, long tapered screw, die)

The compounding extruder as a series of unit operations

  • Feeding
  • Melting
  • Downstream feeding
  • Mixing
  • Venting
  • Pumping

Configurability of the twin-screw extruder

  • Clam Shell Barrels
  • Segmented Barrels
  • Closed Barrels
  • Open Barrels
  • Side feed Barrels
  • Assembled Barrels

Function of screw elements

  • Conveying
  • Melting
  • Mixing
    - Distributive
    - Dispersive
    - Liquid

Examples of Screw Designs

  • Filled polymer
  • Glass filled polymer
  • Liquid addition compounding
  • Pelletizing powder
  • Incorporating nanoparticles

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

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Introduction to Twin Screw Configuration and Design
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