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Silicone Elastomers Technology and Fabrication

Course Date: 
Jul 15 2014 - 8:00am to Jul 17 2014 - 5:00pm
Fee: 
$1 395
Instructor: 
Mel Toub, MT Consultants LLC
Educational Goals: 

This course offers a comprehensive overview of silicone elastomers, including basic silicone chemistry, types of silicone elastomers, manufacturing processes, fabrication techniques, problem solving, and application areas. Emphasis is on liquid injection molding (LIM/LSR) with detailed information in the areas of material selection, dispensing methods, injection molding process, tool design, and bonding alternatives. This course is presented by a panel of experts in the silicones field, and time is allotted for discussion of specific projects of interest.

Featured at this course is a one half day hands-on session in the plastics/rubber processing facility during which attendees will experience all the manufacturing processes involved in producing an actual liquid silicone rubber part, including material selection, pump design and operation, tool design consideration, injection molding machine setup and operation, and flow analysis.
 

Who should Attend: 

Both entry-level and experienced rubber technologists, rubber chemists, process engineers, laboratory managers, supervisors, technicians, shop foremen, quality assurance managers and engineers, technical sales personnel and rubber producers and users.

Course Outline: 

1. Silicone Elastomer Technology

  • Silicone Product Categories
  • Why Silicone?
  • Silicone Markets and Applications
  • Silicone Manufacturing Process
  • Nomenclature
  • HCE / HCR Technology
  • LIM / LSR Technology
  • Testing and Specifications
  • Elastomer Properties

2. Liquid Silicone Rubber (LSR / LIM)

  • Why Liquid Silicones?
  • Comparison with HCE And TPE
  • Process Overview
  • Dispensing Systems
  • Injection Equipment
  • Molding Parameters
  • Automation
  • Demolding
  • Flow Analysis and Simulation
  • Troubleshooting

3. Tooling Design and Construction

  • Materials
  • Machining Methods
  • Hot Runner vs Cold Runner
  • Valve Gate vs Open Gate
  • Venting and Gating
  • Cavitation
  • Balanced Design
  • Mold Flow Simulation
  • Do’s and Don'ts

4. Adhesion and Bonding of Silicone Rubber

  • Definition of Adhesion
  • Types of Adhesion
  • Measurement of Adhesion
  • Overmolding
  • Two Component Molding
  • Surface Modification
  • Troubleshooting

5. Class Project

  • Performance Objectives
  • Material and Equipment Requirements
  • Prototyping
  • Cost Analysis
  • Debugging

 

 

Chair Instructor: 

Mel Toub is currently President of MT Consultants LLC and worked in the silicone elastomers industry for 34 years. He has presented numerous technical papers to ACS, SAE, the International Silicones Symposium, and industry journals and holds several patents in the area of silicone rubber technology. His academic background includes BE and ME degrees in Materials Engineering from Rensselaer Polytechnic Institute as a well as an MBA also from RPI.

 

Additional Instructors:

John Timmerman, Starlim North America Corporation; Bob Pelletier, Graco/Fluid Automation Inc.; Rick Finnie, M.R. Mold & Engineering Corp.; Juergen Giesow, Arburg GmbH

Receive a 15% discount on Injection Molding Principles and Injection Molding Troubleshooting if registered for both workshops.

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