September 12 - 13, 2017 ; 8:30 am - 5 pm
Location: , Prague, Czech Republic
Tuition: 2-day Seminar for EUR 950 or 2-day Seminar for EUR 1,250 including 3-month license of VEL™ Material Properties module (with Extrusion Calculator™)
This seminar will teach a systematic and practical approach to designing, optimizing and troubleshooting single-screw extruders and dies in extrusion process. Attendees will gain a good understanding of practical rheology and how to use it for efficient die design. Explaining why certain extrusion „phenomena“ occurs is a major theme of this seminar, and industry-relevant case studies will be provided. Topics covered will be applicable to all areas of single-screw extrusion including pipe and tubing, film and sheet, wire and cable coating, blow molding and profile extrusion. Attendees will learn about the most important design criteria that go into good die designs and how to differentiate between good and bad designs.
WHO SHOULD ATTEND
This course is intended for anyone who is currently responsible for, or interested in the design, performance, optimization or purchasing of single-screw extruders and/or extrusion dies. Extrusion die designers, process engineers, technical service personnel, research and development personnel and those responsible for specifying and troubleshooting extrusion processes will obtain the most benefit from this course.
- Gain a better understanding of the extrusion process
- Learn how to distinguish a „good“ vs a „poor“ screw and/or die design
- Improve extrusion problem solving skills
- Learn the material properties that are the most critical to your process
- Learn how to improve product quality, and reduce/eliminate degradation
- Receive a 3-month VEL™ Material Properties module license (including Extrusion Calculator™)
Day 1: Tuesday Sep 12, 2017
Morning: Polymer Rheology
The attendees will learn about the most important material properties (such as thermal properties, viscosity properties), what they mean, how they are obtained and, most importantly, how they affect the extrusion process. Attendees will be shown how to use the COMPUPLAST® Extrusion Calculator™ to perform many useful calculations and analyze and troubleshoot a wide variety of extrusion equipment.
Afternoon: Extruder Performance
This part of the seminar will describe the functions and the requirements for a single screw extruder using both a combination of theory and videos of experiments performed on glass window extruders. The main principles of operation are reviewed and design parameters and variations are explained, from a CAE point of view. The extruder simulation software will be used to re-enforce the theory presented and to demonstrate the effect of screw design, operating conditions and material changes on melt quality. It will be explained how the process conditions influence the screw behavior, and how to choose the proper screw for specific process.
Day 2: Wednesday Sep 13, 2017
Morning: Co-extrusion Process and Troubleshooting
This section will present the major factors to be considered in coextrusion die design for almost any application. Emphasis will be placed on the potential problems, how to identify them and how to correct or avoid them. The application of the concepts will be presented with examples.
The objectives will be:
- How to identify some of the different types of interfacial or layer instabilities
- How the instabilities in melt flow affect the layer instabilities
- The process modifications that can be made to correct interfacial problems
- How and what material properties influence coextrusion problem
The topic of Co-extrusion will also be discussed along with some design strategies for avoiding problems with product quality. The session also presents some practical strategies for avoiding polymer degradation during the day to day operation of the line.
Afternoon: Extrusion Dies
In this part of seminar we will describe the functions and the requirements of various types of dies. „Annular“ dies are used to produce tubular products such as lm, pipe and tubing. „Flat“ type dies are used for the production of at/cast lm and extrusion coating. The main principles of operation are reviewed and design parameters and variations are explained, from a CAE point of view. The die simulation software will be used to re-enforce the theory presented and to demonstrate the effect of channel designs, operating conditions and material changes. In Profile Die design section we will introduce COMPUPLAST® Cross Flow Minimization Method™ (CFMM™). This method takes Profile Die design from a black art and turns it into a repeatable science. Case studies will show this method being applied to conventional, automotive, and multi-lumen profiles.
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