Plastic Injection Mold Design Advanced

Take your understanding of the inner workings of injection molds to the next level. With a focus on cost savings throughout, work on mini-projects at each important juncture in order to master advanced concepts.

This course can be applied to the following certificates:
Elastomer Technology Certificate
Plastics Technology Certificate


Erik Foltz

Erik Foltz is a certified professional Moldflow® consultant at The Madison Group. Foltz received his MS from the Polymer Engineering Center at the University of Wisconsin-Madison. Foltz’s work concentrates on assisting industrial clients accelerate the product design process through the ... read more

Who Should Attend

Mold designers, tooling engineers and toolmakers, product designers, buyers, molders and managers.

Benefits and Learning Outcomes

  • Understand advanced parting line, shut-off development, advanced slide and lifter design
  • Learn to do advanced cavity and core inserting
  • Analyze your current issues regarding the subject matter

Course Outline/Topics

Introduction and Overview

  • Course objectives

Molding Surface Tolerances

  • The various fits in a typical mold
  • The tolerances that should be maintained
  • How the product tolerances affect tool tolerances
  • How it affects mold cost

Mold Strength and Performance

  • Understanding the forces acting against a mold
  • Various calculations
  • Designing for strength and longevity

Mold Alignment and Interlocking

  • Various methods of insuring mold alignment
  • Balancing of forces in a mold
  • Core shift causes and fixes
  • How it affects mold longevity

Advanced Parting Line and Shut-off Development

  • A detailed look at shut-off designs
  • Contoured and stepped parting lines
  • Common product design errors that complicate parting lines
  • Examples of complex parting lines

Advanced Slide and Lifter Design

  • When to use a lifter instead of a slide
  • Methods of slide actuation
  • A look at the forces involved
  • Proper heel block and gib design
  • The use of springs with slides
  • How and when to delay slides
  • Dual action slides
  • Designing slides for low maintenance
  • Determining slide travel
  • Alternate methods of molding undercuts
  • Collapsible and expandable cores

Advanced Cavity and Core Inserting

  • A thorough look at every aspect of inserting
  • Criteria for deciding whether or not to insert
  • Pins and other round inserts
  • Inserting slides and lifters
  • Laminated and gate inserts
  • The economics of inserting
  • Assembling of inserts
  • Quick change inserts

Mold Monitoring

  • Pressure transducers
  • Thermocouples
  • Proximity and limit switches
  • Vision systems


Completion of Plastic Injection Mold Design Basics or a solid knowledge of the subject matter.

Date: Tue-Wed, Apr 4-5

Delivery Method: In-person With Livestream

Time: 8am-5pm CT

Location: UWM School of Continuing Education or view on Zoom

Instructor: Erik Foltz

Fee: $1,190

CEUs: 1.4, CEHs: 14, PDHs: 14

Enrollment Limit: 25

Program Number: 4830-15129

Registration Deadline: Mar 28

Register Now


Join Our Email List

Get the latest on courses and certificates in your areas of interest.