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Designing Plastic Parts for the Injection Molding Process


Get a fundamental overview of plastic part design for the process of injection molding – ideal for engineers and designers who are accustomed to working with metals, but faced with metal to plastic concerns. Examine plastic materials, behavior and selection, engineering design, manufacturing considerations and assembly methods.

Who Should Attend

Engineers and designers who are accustomed to working with metals and are faced with metal to plastic concerns.

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Benefits and Learning Outcomes

  • Learn how to select an appropriate plastic material formulation
  • Discover how to work within the manufacturing limitations associated with the injection molding process
  • Understand how to approach plastic product development and establish end use requirements

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Course Outline/Topics

An Introduction to Plastic Materials

  • Historical Development
  • Fundamental Concepts
  • Molecular Weight
  • Repeat Unit Structure
  • Morphology
  • Effect of Additives
  • Mechanical Property Overview
  • Flow Property Overview
  • Advantages of Plastic Materials
  • Limitations of Plastic Materials

Review of Injection Molding Equipment

Review of the Injection Molding Process

Review of Injection Molds

  • Design Considerations for Injection Molded Parts
  • Mold Filling Considerations
  • Effect of Gate Location and Type
  • Molecular and Fiber Orientation
  • Mold Filling Pressure Drop
  • Flow Leaders and Flow Hesitation
  • Mold Filling Simulations
  • Runner Balancing and Family Molds
  • Weld or Knit Lines
  • Shrinkage and Warpage Considerations
  • Part Ejection Considerations

Mechanical Behavior of Plastic Materials

Approaching Plastic Product Development

  • Establishing End Use Requirements
  • Conceptual Design
  • Initial Candidate Material Selection Procedures
  • Design Based Upon the Materials Selected
  • Final Materials Selection
  • Manufacturing Related Design Modifications
  • Prototyping and Testing
  • Production Tooling and Manufacturing
  • Plastic Part Prototyping Techniques
  • Assembly Techniques for Injection Molded Parts

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This program can be applied toward the:

Some knowledge of plastic materials, injection molding and engineering principles is useful, although the basics are introduced.

"The Professor was the best one I've ever had for a seminar or training class. I'm definitely going to come back to UW-Milwaukee for future classes."
Mary J. Glander, Task Force Tips

Mon.-Tue., May 11-12
Location: UWM School of Continuing Education (Click link for directions)
Instructor: Nick Schott
$890: Register by Thu., Mar. 12
$990: Register on or after Fri., Mar. 13 Discount Available
CEUs: 1.4/PDHs: 14
Program No. 4830-7526
Register Now
  Related Courses  
Plastic Material Selection
  Designing Plastic Parts for the Injection Molding Process course details PDF
For more information, contact:
Murali Vedula,, 414-227-3121
Marcia Gabriel,, 414-227-3378


Spring 2015 Plastics Engineering Brochure
Plastics Brochure
Or download the pdf

Plastics Technology Certificate
Fall 2014
Congratulations to

Shayna Begay
Bruce Comer
Tejas Dhyani
Brian Ecklund

for receiving UWM's Plastics Technology Certificate.

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