Twin Screw Application And Design

We ask a lot of our compounding equipment – take a base polymer, melt but not degrade it, combine it with various ingredients, distribute those additives and disperse them, then discharge the mixture uniformly through a die so that it can be cut into uniform pellets. Join Chris Tucker from NFM Welding Engineers as he discusses the rate limits, screw and barrel design, power, speed, and reliability of extruder design.

Course Outline:

Root Cause Analysis

  • Raw Materials
  • Formulation, Feeding Capability
  • Process Capability
  • Product Capability
  • Controls and Electrical
  • Hardware Functionality
  • On stream time
  • Changeovers
  • Measures of performance, improvement.

Designing for Process Capability, Reliability, Flexibility

  • Define the target process function, rates
  • Understand the rate limits so that you can debottleneck in the future
  • Screw and Barrel Design
  • Evaluate the power, speed capability requirement
  • Evaluate the condition of the existing equipment
  • Build reliability into a new system

When: Tuesday & Wednesday, April 11-12, 2023
Time: 9:00am-4:00pm
The Polymers Center
8900 Research Dr.
Charlotte, NC 28262

Cost: TBD

Event Venue Date
Twin Screw Application And Design Polymers Center Campus
  • April 11, 2023 9:00 am

Chris Tucker is currently Director of Process Engineering for NFM Welding Engineers, Inc. After graduating in 1984 with a BSChE from Syracuse University he worked for Welding Engineers, Inc as a Process Engineer, then Manager of Process Technology with a focus on finishing of polymers and reactive extrusion. In 1994 he joined Solvay Engineered Polymers as Process Engineering Manager, and later as Engineering Manager where he focused on Banbury and twin screw compounding of TPO materials. In 2000 he joined Trexel Inc as an OEM Manager performing technology transfers in microcellular foam injection molding processes.

He joined NFM Welding Engineers in 2002 as the Director of Process Engineering.

His current focus is on finishing of elastomers from dilute solution, from water slurry, and from emulsion (latex) in twin screw extruders. He has overseen the construction and operation of one of the largest scale contract pilot extrusion devolatilization facilities for handling of flammable liquids in the country.

Chris has published several papers and taught seminars on mixing at the University of Akron and the University of Wisconsin. He served on the SPE Extrusion Division Board of Directors from 2004 -2006.

Chris holds the following patents:

US 10,016,698 B2 “Polymer Solution Concentrator Machine and Devolatilization Process”
US 9,316,439 B2 “Dewatering Machine and Process”