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Silicone Elastomers Technology and Fabrication - Course Description

Upcoming Offerings

  • TBA

Instructor: Mel Toub

Fee: $1,395

 

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

5. Rubber

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

6. Class Project

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

 

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