A Polymer Process Engineering & Training Company Home of the CRD Mixing Screws
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May 21-22, 2012
Doubletree Hotel
Wood Dale, IL
by Chris Rauwendaal
Printable Outline
About the Seminar
This seminar covers important materials, equipment, and process issues of sheet extrusion in a comprehensive fashion.
The objectives of this seminar are:
What the attendees will learn:
Who should attend:
| Course Description |
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1. Introduction • 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 2. Important plastic properties • Plastics used in sheet extrusion • Additives • Virgin vs. regrind • Melt flow properties • Thermal properties • Viscous heat generation • Optimizing process conditions • How to set process conditions • Orientation: what is it? • How to control orientation
3. Requirements for efficient extrusion • Efficient machinery • Efficient operation • Efficient changeover • Maintenance • Resin quality • Training • Design of experiments • Data acquisition system • Instrumentation and control 4. Functional aspects • Solids conveying • Plasticating • Melt conveying • Mixing • Energy efficiency 5. Extruder screws • Standard extruder screw • Barrier type extruder screws • Multi-stage screws for venting • Mixing screws |
| Course Description (continued) |
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6. From the head to the sheet die • The head adaptor • The screen changer • The choke valve • The gear pump • The feed block 7. The flat sheet die • Various die configurations • Deckling options • Die adjustments • Auto die lip adjusters 8. The cooling roll stack • Roll stack configurations • Roll face and diameter • Cooling roll construction • Roll stack actuators and controls 9. Downstream equipment • Pull roll (haul-off) unit • Cooling rack and other cooling methods • Sheet slitters • Gauge scanners and monitoring systems • Sheet coating options • Lamination for decoration and barriers • Sheet accumulators • The winding system • Extrusion control systems • Safety • Start-up and shut down procedures • Pre-start setup procedures and checks • Maintaining steady state conditions • Stringing up the roll stand the correct way • Process parameters • Maintenance 10. Troubleshooting sheet extrusion problems • Requirement for efficient troubleshooting • Troubleshooting tools and techniques • Surging • High melt temperatures • Thickness variation (MD and TD) • Sheet defects • Case studies and exercises Books authored by Chris Rauwendaal: The following books are discounted when you register for a seminar. If you want to order check appropriate box on registration form.
Click on the image or name for a description of the book. 
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