*** Please note, each row and course# listed below is a separate, complete course. ***

Rubber Molding Processes: Principles, Troubleshooting & Mold Design

Course# Date Time Location
136-1280 09/18/2024 - 09/20/2024 8:30 AM - 4:00 PM Microsoft Teams
136-1281 02/19/2025 - 02/21/2025 8:30 AM - 4:00 PM Microsoft Teams
136-1282 09/17/2025 - 09/19/2025 8:30 AM - 4:00 PM Microsoft Teams
Cost: $1,200 USD
Online Registration
CEU's: 1.6
Instructor: Mr. Terry Chapin

Course Overview

Course Times: 8:30 am – 11:30 am; break for lunch at 11:30 am until 1 pm; and class will start back at 1 pm until 4 pm (EACH DAY)

This seminar covers a broad range of topics that are fundamental to the design of rubber molds. Each topic covered includes some basic well known aspects of rubber mold design and also touches on some lesser known rubber mold design techniques and concepts. The novice rubber mold designer will be overwhelmed with useful design information and the seasoned practitioner will find plenty of valuable bits of information well worth the day.

Online Course Requirements

We want you to have a great experience participating in our remote (online) courses, and for that, you’ll need the right equipment and internet connection.

Minimum needs are:

  • A broadband internet connection that has at least a 2 Mbps upload and download speed.
  • A computer (PC or Mac) that can support the latest web browser versions.
  • At least 4 GB of RAM and adequate hard drive space.
  • A microphone and a speaker.
  • International Students: For virtual (online) courses, an additional fee will be assessed to cover the cost of shipping the professional binder (presentation slides), to your address. The cost of international shipping can be significant.

For more information, visit our Online Course Requirements webpage.

Instructor Biography:

TC Newer PictTerry Chapin received his B.S. from Youngstown State University in Youngstown, Ohio in June 1980. He majored in mechanical engineering and minored in math and civil engineering.

After 33 years, he retired from Delphi as a senior materials engineer, working primarily in the area of silicones, elastomer parts and foam products development. He was previously senior rubber technical and cost leader at Delphi, after working as a tool engineer for rubber and plastic molds at the Delphi Packard Division for more than 20 years.  He is now working for himself as a consultant and instructor.  His new company is Elastomeister, and his position is Rubber Technologist.

Terry has been involved in the rubber industry for more than 30 years, working with rubber companies all over the world. He has held previous engineering positions at Paxson Machine Company, EMCO Wheaton and Commercial Shearing. He holds two U.S. patents. Terry has been an active technical speaker for university level continuing education instruction, rubber conferences and technical in-plant venues for more than 25 years.

Rubber Molding Processes: Principles, Troubleshooting & Mold Design

  1. Principles of Rubber Material & Behavior During Molding
  2. Principles of Molding Methods
    • Compression Molding
    • Transfer Molding
    • Injection Molding
  3. Principles of Molding Equipment
  4. Principles of Mold Construction
    • Mold Steel and Finishing
    • Cavity Inserts, Cores, and Core-Bars
    • Gates & Vents
    • Runner Layouts and Cross-Sections
    • Use of Insulation
    • Platen Design
  5. Compression Mold Design
  6. Transfer Mold Design
  7. Injection Mold Design
  8. Specialized Mold Design Techniques
    • Runner Design Techniques
    • How Runners and Cavities Fill
    • Cross-Section Designs
    • Laminar Flow Ratio
    • Vanturi Runner Feature
    • Flashless Molding
    • Wasteless Molding
  9. Operator Assist Techniques
  10. Prototype Molding Techniques
  11. Principles of Rubber to Metal Bonding and/or Over-Molding
  12. Mold Release & Mold Maintenance
  13. Rubber Product Performance & Tolerances
  14. Troubleshooting


If you have any questions or need more information about this course, please contact:

Penelope Pinkston


Online Registration


Registration Form

Registration information: Registration shall remain open until posted as closed on the course listing on this site.

Registrations must be guaranteed by check, a purchase order number or a credit card, otherwise the registration will not be processed. Checks should be made payable to "The Akron Polymer Technology Services Training Center" and must include a copy of your completed registration form. Course fees are due before attending.

All registrations—whether by online, phone, fax or mail—will be confirmed and considered binding and subject to all cancellation policies. If you do not receive a confirmation prior to the class, please call The Akron Polymer Technology Services Training Center to verify your registration.

Course fee includes classroom instruction, instructional materials, parking permits, continental breakfast, lunch, beverages and refreshment breaks. Travel and hotel accommodations are not included.


Visit our registration webpage to view our cancellation/withdrawal policy.