Elastomer Molding Technology - 2 Day Course

To be scheduled
Time: 8:00 AM - 4:00 PM
Location: Akron Polymer Training Center, Akron, OH 44325-5404, U.S.A.
Cost: $900 USD
CEU's: 0.75
Instructor: Mr. Terry Chapin

Course Overview

This seminar describes and compares important molding methods (compression, transfer, and injection) for thermosetting elastomers (TSEs) with methods (injection and blow) for thermoplastic elastomers (TPEs). There will be a limited description of mold design for TSEs.

This introductory course will benefit people involved in molding of elastomers, especially those transitioning from molding of one type of elastomer to another. Attendees with primarily a materials-related background will improve their understanding of molding processes and the effect of mold design on molded products. Process and design managers will better understand the effect and importance of these factors on the overall molding operation.

In addition, the course considers elastomer selection, varied deflashing techniques, elastomer processing factors, elastomer part tolerancing, molded article dimensional variations and design for manufacturability (DFM).  DFM difficulties and examples are described.  Also included is a discussion of the "Beaumont Melt Flipper", correcting mold problems, importance of mold vents and gates, vacuum molding, as well as trouble shooting the molding process.

Attendees will improve their understanding of molding behavior of TSEs and thus improve and better control their elastomer molding operations. The interdisciplinary approach used will assist them in understanding molding as an integrated operation consisting of materials, processes and design. Participants are encouraged to discuss current molding problems for class input.

Information from the books, Elastomer Molding Technology and Rubber Molding Principles, will be used in conjunction with the seminar.


Course Outline

APTC Elastomer Molding Technology Course

  • Introduction
  • Rubber Material Overview
  • Rubber Material Flow
  • Rubber ASTM Material Designations
  • Rubber Molding Methods
  • Other Types of Molding
  • Rubber Material Process Overview
  • Overview of Presses and Molding Equipment
  • Deflashing Techniques
  • Processing of Rubber
  • Design for Manufacturability
  • Tolerances for Rubber Parts
  • Mold Debug
    • Micro-venting
    • Vacuum Molding
    • Beaumont Melt Flipper
  • Troubleshooting the Rubber Molding Process

UWM Design of Rubber Molds

  • Introduction
  • Basic Rubber Material Overview
  • Overview of Molds and Molding Processes
  • Processing of Rubber
  • Overview of Presses and Molding Equipment
  • Basic Mold Construction and Types of Molds
    • Mold Steels and Finishing
  • Cavity Inserts, Cores and Core-bars
  • Gates, Venting and Vacuum
  • Runner Layouts and Cross-Sections
    • Runner Design Techniques
  • Flashless Molding Techniques
  • Wasteless Molding Techniques
  • Rubber to Metal Bonding and/or Over-molding
  • Platens, Mold Mounting and Mold Insulation
  • Mold Releases Mold Maintenance and Cleaning
  • Special Prototype Mold Designs
    • Feature molds
    • Chase Molds
  • Tolerances for Rubber Parts
  • Design for Manufacturability
  • Troubleshooting
  • Tricks of the Trade
  • Appendix
    • Compression Mold Design Using Applications
    • Transfer Mold Design Using Applications
    • Injection Mold Design Using Applications
    • DFM Examples
    • Integration of Automation and Operator Assist Systems
    • Manufacturing Principles