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Rubber Extrusion Technology

Learn applicable basic information on all aspects of the rubber extrusion process. Build a knowledge base that encompasses products ranging from intricate profile extrusions to tires, using compositions ranging from a single thermoplastic elastomer to multiple dense and cellular compounds coextruded with carriers and reinforcements.

This course can be applied to the Elastomer Technology Certificate.

Who Should Attend

Materials and process engineers, die designers, quality control personnel, supervisors and managers responsible for these rubber extrusion functions.

Benefits and Learning Outcomes

  • Understand compound ingredients, characterization and processing
  • Become familiar with equipment for pumping, shaping, curing and monitoring
  • Learn various methods related to process variation and control

Course Outline/Topics

Elastomer Properties

– Chemical Structure

– Molecular Weight/Distribution

– Morphology and Crystallinity

– Viscosity (Flow)

– Elasticity (Swell)

– Scorch

Laboratory Tests for Extrudability

– Mooney Viscometer

– Processability Testers

– Standard Dies (Garvey)

– State of Cure Tests

Compound Ingredients

– Elastomers

– Fillers

– Plasticizers and Process Aids

– Cure Systems/Nitrosamines

Processing and Compounding

– EPDM

– Polychloroprene (Neoprene)

– SBR/BR

– Nitrile Rubber

– Chlorosulfonated Polyethylene

– Silicone Rubber

– Fluoroelastomers

 

PUMPING EQUIPMENT

Screw Extruder

– Types (Hot/Cold Feed)

– Barrels and Screws

– Vented Extruders

– Continuous Mixers/Twin Screw Extruders

– Feed Devices

Ram (Preform) Extruders

Auxiliary Devices

– Shear Head

– Cavity Transfer Mixer

– Gear Pump

Drives and Transmission

Temperature Control

 

SHAPING EQUIPMENT

Heads

– Inline Heads

– Crossheads

– Tire Heads

– Breaker Plates

– Screen Changers

Dies

– Types and Design Criteria

– Flow

– Drawdown

– Sheet Dies, Profile Dies

– Design Computations

– Die Relief Strategies

– Finite Element Simulation

 

DOWNSTREAM EQUIPMENT

Continuous Cure (Low Pressure)

Batch Cure

Hose Manufacture

 

INSTRUMENTATION

Instrumented Extrusion Line

Temperature Sensors

Pressure Sensors

Dimension Sensors

Weight and Area Sensors

Property Sensors

 

OPERATIONS

Extruder Dynamics

– Flow in Screw Pumps

– Operating Curves

– Extrudate Temperature

– Conveyor Operation

– Extrudate Contraction

– Extrudate Curvature

Productivity and Quality

– Optimum Conditions

– Feed Strip Geometry

– Feed Mill Operation

– Adjustments on Pin Barrels

– Screw and Barrel Wear

– Starved Operation

– Die Drool

Process Variation and Control

– Statistical Process Control

– Feedback Control

– Size Control

– Shape Control

– Online Measurement Guide

– Commercial Controls

 

ADVANCED TECHNOLOGIES

Changing Extrudate Shape

Switching Feed Streams

Directed Flow Technology

– Rapid Die Change

– Dimensional Control

Multiextruder Control

Low Resistance Dies

 

TROUBLESHOOTING

Product Geometry

Extruder Operation

Compound

Wed.-Fri., Apr. 27-29, 2016

8am-4:30pm

Location: UWM School of Continuing Education

Instructors:
John Dick
James Stevenson

Fee:

$1,290 if you register by Sat., Feb. 27, 2016.
$1,390 if you register after Sat., Feb. 27, 2016.
Register on or after Sun., Apr. 27, 2016

PDHs: 20, CEUs: 2

Enrollment Limit: 40

Program Number: 4830-8659

Registration Deadline: Wed., Apr. 27, 2016

Register Now

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