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In-Plant
Training Programs
Injection Molding
Injection Molding Technology
2-day seminar
Purpose &
Overview
This
program deals with the "how and why" of the injection molding
process. The course starts with an overview of the process and an
introduction to the characteristics of polymers/commercial plastics.
These characteristics are then used to provide analytical considerations
of the process and possible solutions to common (and not so common)
molding problems. Simultaneous engineering concepts are emphasized.
Who should
attend?
This seminar
is particularly valuable for managers, engineers, designers, buyers,
toolmakers, quality, production, and sales personnel desiring a
comprehensive technical understanding of the process.
About the Instructor: William G. Frizelle
Bill Frizelle
taught in the Mechanical Engineering Technology program at the Rochester
Institute of Technology in Rochester, N.Y. His credits include over
20 years of industrial experience in plastic product design and
processing, including some of the pioneer work in the injection
molding of thermosets. Bill holds a B.S. and M.S. in Chemical Engineering
from the University of Rochester. He held positions at Kordite Corporation,
General Motors Institute, Emerson Electric Company, and Schlegel
Corporation before joining RIT in 1984. He is a Senior Member of
the Society of Plastics Engineers. A registered Professional Engineer,
Bill Frizelle has presented more than 200 seminars in injection
molding and other phases of plastics technology. His unique presentation
provides a rare combination of technical "know-how," practical
experience, and a proven ability to teach.
Seminar
Content:
Injection
Molding •
A process/hardware description including machine sizing considerations
Material Characteristics of Concern in Injection Molding
• An introduction to molecular weight, molecular weight distribution,
crystallinity, heat capacity, thermal conductivity, and coefficient
of thermal expansion
Flow Behavior of Plastic • What "non-Newtonian" means
to an injection molder
Mold Types • Advantages and Limitations
Process/Material/Tooling/Part Design
Limitations • The concepts of simultaneous engineering
Machine Controls and their Relationship to Finished Part Characteristics
• Pressure, volume, and temperature considerations
Molding Problems and their Solutions • Sinks, voids,
warp, flash, short shots, cracking, burning, weld lines, jetting,
splay, etc.
Process Capability/Process Control • A survey of methods,
systems and applications
Injection Molding Economics • Some elements of cost
in injection molded products
Attendees
are encouraged to bring problem parts for classroom (or individual)
discussion.
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