Course Title

Course Title: Injection Molding Process Troubleshooting

20 Professional Development Hours/2.0 CEUs

Course Description: The Injection Molding Process Troubleshooting course is designed to utilize an understanding of the injection molding process to solve problems quickly and permanently. Included in this course is a troubleshooting guide to many of the common defects found in injection molding, detailing possible causes and practical solutions.

Overall Course Objectives:

Learn the Lightspeed method for injection molding troubleshooting.
Identify the defects that can occur in injection molding.
Recognize the cause and effects of injection molding defects.

Course Content:

Lesson 1 - The Troubleshooting Process

Objectives:

List the steps in the "Ten Step" Troubleshooting Checklist.

Identify the risk factors that must be considered to determine a logical path towards troubleshooting.

Explain the Reliability & Repeatability method of measurement for trial results.

Lesson 2 - Analysis and Molding Trials

Objectives:

Understand the steps in performing trials and analyzing results of the trial.

Learn the difference between short and long term solutions to processing problems.

Describe what is required to monitor part quality and document results from process troubleshooting.

Lesson 3 - Defect: Black Specks to Drooling and Stringing

Objectives:

Identify black specks, brittleness, burn marks, contamination, cracking, crazing, drooling & stringing, and delamination.

Describe the causes of these defects.

Determine the solutions to these defects.

Lesson 4 - Defect: Ejector Pin Stress Marks to Rib or Boss Read Through

Objectives:

Identify ejector pin stress marks, flashing, gate smear, gloss variations, jetting, laking, melt fractures, rib & boss read through.

Describe the causes of these defects.

Determine the solutions to these defects.

Lesson 5 - Defect: Scoring to White Streaks

Objectives:

Identify the scoring, severe knit lines, short shots, splay (spray), sticking parts, sticking polymers, sticking sprues, unmelted particles, voids (and/or Sinks), warpage, waviness/rippling, and white streaks.

Describe the causes of these defects.

Determine the solutions to these defects.

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