Rauwendaal Extrusion engineering, Inc.
Rauwendaal Extrusion Engineering, Inc. 530.269.1082

A Polymer Process Engineering & Training Company Home of the CRD Mixing Screws

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Understanding & Optimizing Extrusion Seminar, 3 day Seminar
by Chris Rauwendaal

September 10 - 12, 2018

Lecture at Courtyard by Marriott York
2799 Concord Road
York, PA 17402
Phone: 717-840-7840

Labs at Graham Engineering
1203 Eden Road
York, PA 17402
Phone: 717-848-3755

Printable Outline and Scanable Registration Form We will send you an invoice and you can use the custom payment area on our home page to make a payment with a credit card or use a PO# and send us a check.  

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Courtyard by Marriott York
2799 Concord Road
York, PA 17402
Phone: 717-840-7840
Website: marriott.com/HARYK

TownePlace Suites by Marriott York
2789 Concord Road
York, PA 17402
Phone: 717-840-1180
Website: marriott.com/HARYT

About the Seminar

“Eliminate the art – work smart” With this seminar you can become the smartest extrusion person in your company and make your company a world-class producer.

What the attendees will learn

  • How to use a high-speed DAS (HS-DAS)
    • to analyze pressure and melt temperature variation in the extruder
    • to optimize the barrel temperature profile
    • to quantify extrusion process stability
  • How to obtain data on viscosity versus shear rate from a lab extruder
  • How to determine the melt fracture behavior of your polymer
  • How to measure melt temperature correctly
  • How to measure melt pressure correctly
  • How to perform QC on incoming raw material
  • How extruder screws and dies can be designed for optimum performance
  • How to make your manufacturing operation more cost effective
  • How to make sure you have the right extrusion equipment
  • How Industry 4.0 can be applied to extrusion operations

Who should attend

  • Extruder operators
  • Set-up technicians
  • Process engineers
  • Quality control personnel
  • Floor supervisors
  • Plant managers
  • Production managers
  • Technical service personnel
  • Extruder manufacturers
  • Maintenance personnel

Testimonial from previous Seminars

Cancellation Policy

Course Description
  • Introduction to extrusion (Day 1)
    • Basic extruder components
    • Screw, barrel, and feed system
    • Grooved feed extruders
    • High speed extruders
    • Screw drive systems
    • Breaker plate and screens
    • Gear pumps
    • Heating and cooling
    • Instrumentation and control
  • Important polymer properties
    • Melt flow properties
    • Thermal properties
    • Viscous heat generation
    • Optimizing process conditions
    • How to set process conditions
  • Functional aspects of extrusion (Day 2)
    • Solids conveying
    • Plasticating
    • Melt conveying
    • Degassing
    • Mixing
    • Energy efficiency
  • Extruder screw design
    • Standard extruder screw
    • Barrier type extruder screws
    • Multi-stage screws for venting
    • Mixing screws
    • Screw manufacturing
  • Extrusion die design
    • General rules and guidelines
    • Methods of flow balancing
    • Types of extrusion dies
    • Analysis of dies
    • Coextrusion dies
    • Case studies of die design
  • Optimizing the Extrusion Process (Day 3)
    • Assess efficiency of an extrusion operation
    • Yield
    • Scrap rate
    • Process capability
    • Etc.
Course Description (continued)
  • Efficient machine design
    • Screw design
    • Die design
    • Hopper and feed housing design
    • Heating and cooling of the extruder
  • Efficient machine operation
    • Methods of feeding
    • Why cooling should be minimized
    • Close-loop control
    • Total line control
    • Startup and shutdown procedures
  • Efficient machine setup
    • Preventive maintenance
    • Instrumentation and process monitoring
    • Data acquisition capability
    • Statistical process control
  • Product changeover and purging
    • Machine design for quick changeover
    • Running resins with different viscosities
    • Running resins with different colors
    • Purging techniques
    • Purging compounds
  • Reducing material cost
    • Low cost filler
    • Recycled plastic
    • Foamed plastic
    • Polymer processing aids
  • Reducing energy consumption
    • Quantify extruder energy efficiency
    • Preheating in drier
    • Discharge melt temperature
    • Thermal insulation of machine parts
  • Optimizing extruder barrel temperatures
    • Design of experiments
    • One-at-a-time experiments
    • Dynamic optimization
  • Flexible manufacturing methods, examples
    • Quick-change extrusion systems
    • Adjustable calibrators
    • Continuous die gap adjustment
    • Internal pipe cooling
  • LABS
    • Day 1: startup of extruder, string up of tubing, get tubing to specified dimensions
    • Day 2: run slit die viscometer, demonstration of melt indexer, DSC, and TGA, how to get viscosity data from the extrusion process
    • Day 3: demonstration of high speed DAS, pressure feedback control, IR melt temperature measurement, effect of screw design on process and product stability, quick barrel change and feed housing change, how feed port design can affect process stability

About the Instructor:
Dr. Chris Rauwendaal has been a top seminar instructor for more than 30 years. He has taught with SPE, UWM & UC Berkeley & teaches many in-house courses. He is a well known plastics author. Chris has 35+ years experience in the plastics industry. His experience is in a wide range of extrusion operations, including fiber spinning, film, sheet, tubing, medical tubing & profile extrusion, coextrusion, and reactive extrusion. He has worked on both practical and theoretical problems such as screw & die design, troubleshooting, modeling and computer simulation, material analysis, failure analysis, etc. Chris has authored 6 books on extrusion and related fields.

Since 1990 he has been President of Rauwendaal Extrusion Engineering, Inc., a company that provides custom extruder screws and other extrusion hardware, training programs, engineering & expert witness services to the plastic industry. With screw design as his specialty, over the past 5 years REE had developed patented technologies in the following areas:
• Elongational Mixing Devices
• Mixing non-return valves
• Single screw compounding extruder
• Cooling screws for foam extrusion

For registration contact: sietske@rauwendaal.com
For seminar content contact: chris@rauwendaal.com