A Polymer Process Engineering & Training Company Home of the CRD Mixing Screws
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April 13-15 , 2010
Harrel Inc.
16 Fitch St.
Norwalk, CT 06855
by Chris Rauwendaal
Printable Outline
About the Seminar
The seminar presents a broad overview of tubing and profile extrusion technology.
The objectives of this seminar are:
• to teach the basic principles of extrusion
• to demonstrate how these principles can be applied to extrude tubing and profiles successfully and in a aboratory setting
• to develop a good understanding of how the extrusion process works
• to provide information that allows you to improve extrusion operations at your company
Instructors
Chris Rauwendaal and Harrel Staff
What the attendees will learn:
• what extruder components are critical to successful operation
• how to achieve stable extrusion and how to control the process
• how to select an extruder screw that will improve output and product quality
• the basic principles of die design
• how to troubleshoot extrusion problems systematically and efficiently
• to run an actual extrusion line manually and with full line control
• about startup and service of extruders
Who should attend:
• Extruder operators and technicians
• Process and manufacturing engineers
• Extrusion supervisors
• Technical service personnel
| Course Description |
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“Tubing and Profile Extrusion Seminar/Laboratory”
At Harrel, Inc. E. Norwalk, CT Course Leader: Chris J. Rauwendaal April 13-15, 2010 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
Important polymer properties • Melt flow properties • Thermal properties • Viscous heat generation • Optimizing process conditions • How to set process conditions
Requirements for efficient extrusion • Efficient machinery • Efficient operation • Efficient changeover • Maintenance • Resin quality• Training • Design of experiments • Data acquisition system • Instrumentation and control
Functional aspects • Solids conveying
• Plasticating
• Melt conveying
• Mixing
• Energy efficiency
Screw Design • Standard extruder screw • Barrier type extruder screws • Multi-stage screws for venting • Mixing screws
Die Design • General rules and guidelines • Methods of flow balancing • Types of extrusion dies
• Analysis of dies • Coextrusion dies • Case studies of die design
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| Course Description (continued) |
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Startup and Service of extruders • Initial check-out • Quick electrical checks • Service tips
Laboratory Day 1 Laboratory Day 2 Similar to Day 1. Except that this time you will be using free air extrusion to make bump tubing on a state-of-the-art line. Both outer diameter and wall thickness of both large and small tubing sections will be under automatic control. You will also be using the latest in Statistical Quality Control (SQC) techniques to monitor the quality level of the tubing. After this laboratory session there will be a demonstration of the new ALTERNATE POLYMER extrusion system, whereby the polymer varies seamlessly from 100% polymer A to 100% polymer B along the length of the tube. Afternoon Day 3
Location Harrel Inc. 16 Fitch St. Norwalk, CT 06855. Tel: 203/866-2573. Fax: 203/866-1483. E-mail: info@harrel.com |
