posted April 29, 2004 10:06 PM               

PURPOSE & OVERVIEW
This seminar provides attendees with a comprehensive technical background of the principles of polymer melt rheology. The emphasis is on the practical aspects of melt flow in extrusion screw and die design, resin characterization, quality assurance and optimization. Don’t miss this opportunity to increase profits by increasing your knowledge of melt rheology - the key to successful utilization of costly raw materials.

WORKSHOP LEADER: PRAVIN L. SHAH - Biography

SEMINAR OUTLINE

Introduction to Polymer Melt Rheology
Fundamentals of Melt Rheology • Classification of fluid behavior • Flow models • Effect of temperature on viscosity • Effect of pressure on viscosity • Effect of shear rate on viscosity • Effect of Molecular weight on viscosity

Instruments to Measure Flow Properties
Commercial Rheometers
Significance of Flow Properties • Polymer melt viscosity • Polymer elasticity and extrudate defects
• Mechanism of flow instability- flow visualization through a glass capillary

Melt Rheology Data and their Practical Applications in Extrusion and Molding Processes
How to Apply Polymer Rheology Know-How in Improving Extrusion Productivity • A rheological overview of the extrusion process • Rheological aspects of extruder screw design • Relationship between melt pressure, viscosity, and melt temperature in extrusion • Calculations of shear rate in extruder screw and die • How to optimize extruder throughput rates