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Elastomer Molding Technology
Returning Spring 2014!
Time: 8:00 AM - 4:00 PM
Location: Akron Polymer Training Center, Akron, OH 44325-5404
Cost:
$900 USD
CEU's: 0.75
Instructor: Mr. John Sommer and 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). Injection molding is emphasized because it is the major molding method common to both elastomers. Injection molding machines and their characteristics will also be described and compared. Finally, there will be a limited description of mold design for TSEs and TPEs.
This introductory course will benefit people involved in molding both types 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 TPEs 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 book, "Elastomer Molding Technology" authored by John Sommer, will be used in conjunction with the seminar.
Course Outline
- Elastomers
- Description
- Types
- Flow behavior
- Adhesion
- Molding Methods
- Compression
- Transfer
- Injection
- Compression/Injection
- Transfer/Injection
- Liquid injection
- Casting
- Reaction Injection
- Blow
- Mold Design
- Mold fouling and cleaning
- Rubber Material Guide
- Typical Applications
- Reasons for Elastomer selections
- Rubber ASTM Material Designation
- Deflashing Techniques
- Processing Of Rubber
- System and Other considerations
- Processing Variables
- Potential Problems
- DFM - Design For Manufacturability
- Why DFM
- What is DFM
- Objectives
- Obstacles
- Examples
- Rubber Part Tolerancing
- Rubber manufacturers association (RMA) Recommendations
- Statistical variations in dimensions
- Tolerance recommendations
- Mold Debug - How To Solve Molding Problems
- Part Design
- Parting lines
- Sharp corners
- Radius’ - eliminate or reduce trapped gas, tumbler chips, and material flow problems
- Eliminating/minimizing undercuts
- Insert (plastic) molding
- Mold Design
- Incorporate part re-designs
- Adding vents/gates
- Vacuum molding
- Beaumont Melt Flipper
- Process modifications
- Material changes
- Trouble Shooting the Rubber Molding Process
Course Registration
General Course Registration:
Download a Printable Registration Form [PDF].
Registration Information:
Registration for a class is due three weeks prior to the scheduled class date.
All 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 Training Center and must include a copy of your completed registration form. COURSE FEES ARE DUE PRIOR TO ATTENDING.
All registrations whether by 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 Training Center to verify your registration.
Course fee includes classroom instruction, instructional materials, parking permits and refreshment breaks. Travel and hotel accommodations are not included.
ENROLLMENT IS LIMITED AND ON A FIRST-COME, FIRST-SERVE BASIS. EARLY REGISTRATION IS STRONGLY RECOMMENDED!
Visit our registration webpage to view our cancellation/withdrawal policies.
The University of Akron
Akron, OH 44325
Phone: 330-972-7111
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