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530.269.1082/ fax 530.269.1084
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Advanced Extrusion

April 7-9 , 2008

Instructors
Chris Rauwendaal

Location:

Conair

Cranberry Business Park

West Kensinger Drive

Bldg #200

Cranberry, PA

Accomodations

Registration Information, Fees & Canceling
Registration Form
Fees, Cancellation Policy


Advanced Extrusion

Course description

Continued...

Introduction

Hardware components of an extruder

          Main components

                   Screw and barrel

              Feed hopper and feed housing

                   Grooved feed vs. smooth bore

              Breaker plate and screen pack

                   Motor and reducer

              Heating and cooling

         Materials handling

              Storage and conveying

                   Drying

              Blending

                   Heat transfer

              Size reduction

         Instrumentation and control

              Melt temperature

                   Melt pressure

              Other important parameters

                   Pressure feedback control

              Temperature control

                   Data acquisition systems

Polymer properties

         Melt flow properties

       How to measure melt flow properties

         How to interpret melt flow data

       Thermal properties

         How to measure thermal properties

       How to interpret thermal data

         How properties affect extrusion

       Viscosity data directly from an   

       extruder

         Demonstration CAMPUS database

Functional analysis of the extrusion,

mechanisms and theories

         Solids conveying,

       Flood feeding vs. starve feeding

         Plasticating,

       Contiguous vs. dispersed solids

       melting

         Melt conveying, effect of shear

       thinning on pumping behavior

         Devolatilization,

       Diffusion vs. bubble devolatilization

         Mixing,

       Distributive vs. dispersive mixing

         Computer programs to analyze

       various extruder functions

Screw design

         Standard extruder screw

       Using theory to optimize geometry

         Barrier type extruder screws

       Mixing screws, engineering analysis

         Multi-stage screws for venting

       Computer aided screw design

         Screw manufacturing

                  Screw materials
                  Coatings &surface treatment
                  Rebuilding screws

Extrusion downstream equipment

         Sizing tanks

       Cooling tanks

         Pullers

       Cutters and saws

         Accessories

 

Location:

Conair

Cranberry Business Park

West Kensinger Drive

Bldg #200

Cranberry, PA

Accomodations

 

 

Troubleshooting extruders

         Requirements and methodology

          Machine related problems

                     Wear
                     Poor screw design
                     Poor die design

         Material related problems

                     Degradation
                     Segregation

         Functional problems

                     Conveying
                     Melting
                     Mixing

         Computer based troubleshooting

         Practical examples and case studies

Die Design

         General rules and guidelines

         Methods of die flow balancing

         Various types of extrusion dies

                   Sheet and flat film dies

                   Blown film dies

                   Pipe and tubing dies

                   Profile dies

         Analysis of dies

         Case study of die design

         Computer aided die design

         Die flow instabilities

         Coextrusion dies

Twin screw extruders

        Twin vs. single screw extruder

        Co-rotating twin screw extruders

        Counter-rotating twin screw extruders

        Co- versus counter-rotating extruders

        Non-intermeshing twin screw extruders

        Screw design for twin screw extruders

        Computer simulation of twin screw extruders



Polymer Extrusion

Books authored by Chris Rauwendaal:

 


 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


 
   
   

 

 

Copyright 2007 Rauwendaal Extrusion Engineering, Inc. 10556 Combie Rd P.M.B. 6677 Auburn, CA 95602-8908. 530.269.1082, fax 530.269.1084.
Information Request Form. / Technical Questions: chris@rauwendaal.com. / General Questions: sietske@rauwendaal.com. Website by Eloquence.