Purpose & Overview
This seminar focuses on the interactions between raw materials, hardware configurations and operating conditions for intermeshing, co-rotating twin-screw extruders. Emphasis is on understanding how twin-screws create properties, with the goal of producing high-quality resin at high throughput and low cost. Attendees are reminded that the primary goal for compounding applications is to produce properties, not pellets. This no-nonsense approach works well for all users of twin-screw extruders, regardless of the application or industry.

Who Should Attend
Process engineers, supervisors and machine operators from both manufacturing and research environments will benefit from this practical approach to twin-screw extrusion, as will scientists involved in polymer product development. This seminar is targeted for process development and optimization (e.g. versus formulation development).

About the Instructor: Adam Dreiblatt
Adam Dreiblatt has been involved with the practical aspects of twin-screw extrusion for more than 25 years. Having trained thousands of users of twin-screw extruders, he has mastered the art of "extrusion speak," presenting complex concepts using plain, simple English. He was formerly manager of process development at Werner & Pfeiderer Corporation and more recently director of manufacturing technology for the Novon Products Division of Warner-Lambert. Mr. Dreiblatt is now President of Extrusioneering International, Inc., a consulting organization founded in 1994, specializing in twin-screw extrusion technologies. He has authored and presented numerous technical papers and has published articles on various aspects of twin-screw extrusion. He has also contributed several chapters in reference books. He holds an M.S. in Applied Science from New York University.

Seminar Content
Twin-Screw Extruder Design Criteria
• Influence of extruder geometry on mixing, pressure generation, mass transfer and residence time
• Co-rotating, counter-rotating, intermeshing, and non-intermeshing (focus is on co-rotating)

Process Design
• Process flexibility, modularity, unit operations
• Starve feeding, downstream feeding
• Process variables, interactions

Screw Design Fundamentals
• Functional description of screw types
• Principles of screw design; solids conveying, melting, heat transfer, mixing, venting, and pumping

Process Examples
• Compounding : alloying, blending, fillers, concentrates
• Devolatilization : Multistage venting
• Reactive processing : polymerization, reactive compounding

Scale-Up Criteria
• Volumetric scale-up
• Power limited scale-up
• Heat transfer scale-up

Process Troubleshooting
• Time dependence of process disturbances; consistency (within-lot), reproducibility (lot-to-lot)

Seminar Fees	Before 2/15/08	After 2/15/08	Nonmember
SPE Member	$675	$775	$925

All forms of registration must contain payment, either by credit card or check, otherwise the registration will not be processed. Checks should be made payable to SPE Seminars in U.S. funds.

Use a separate registration form for each attendee.

If you do not receive a confirmation for the seminar prior to attending, please e-mail seminars@4spe.org or call SPE at +1 203-740-5403 to verify your registration.