PLASTIC INJECTION MOLDING DEFECTS PREVENTION & ROOT CAUSE ANALYSIS
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OTC Training Centre Sdn Bhd
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INTRODUCTION FOR PLASTIC INJECTION MOLDING DEFECTS PREVENTION & ROOT CAUSE ANALYSIS
Specifically designed for the practicing designer and molder.
This workshop focuses on prevention methods for defects and developing systematic root cause analysis skills. For solving molded-part defects and improving part quality problems.
COURSE OBJECTIVE
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How to prevent defects from occurring in the first place?
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Eighty % of plastic parts problems originate from poor design.
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Gap analysis between DFM (Design for Manufacturing best practices) and your actual problems.
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Root cause analysis.
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Troubleshooting injection moulding defects in a systematic manner.
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Implementing sustainable measures in place to prevent defects recurrence.
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Scientific explanations on why these problems occur.
Outline
COURSE CONTENT
- Plastic drying
- Degradation
- Drying time
- Drying temperature
- Types of dryers
- Moisture measurement
- Overdrying effect
- Process optimization & scientific molding
- Optimization of injection phase
- Cavity balance
- Pressure drop
- Process window
- Gate seal time
- Cooling time
- Screw speed & back pressure
- Surface Defects
- Flow lines and jetting
- Splay (moisture or trapped air)
- Haze, blush, and poor gloss
- Mold mark
- Gate blush and gate splay
- Ink smearing
- Incomplete molding
- Race tracking
- Jetting
- Moldflow simulation errors
- Burning and Contamination Problems
- Burn marks and black specks
- Burn streaks
- Contamination
- Discoloration or poor color match
- Physical Problems
- Flash
- Short shots
- Sink marks
- Vacuum voids and bubbles
- Burrs
- Bulging
- Overweight
- Ejector marks
- Geometry Maintenance Problems
- Under- or over-sized dimensions
- Poor dimensional repeatability (poor Cpk)
- Warpage and bowing
- Structural Defects
- Cracking, crazing, and brittleness
- Weld lines
- Stuck parts and pin push marks
- Long gates and plugged gates
- Drag marks and mold damage
- Break during assembly
- Break after usage
- Troubleshooting Procedures and Logic
- How to effectively approach, analyze, and implement troubleshooting procedures.
- Exploring Root Causes
- Explore the root causes of the various defects from the perspective of the plastic material as it fills, compresses, and cools within the cavity.
- Part Defectives and Potential Solutions
- How to avoid potential design-related problems?
- How to optimize the part quality with process-related solutions?
- Troubleshooting Guides (The Good, The Bad, The Efficient)
- A comparison of the different troubleshooting guide formats, including which tend to be most effective for solving molded part problems.
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Evaluating Attendees’ Molded Part Samples
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Defective part samples brought in by the participants will be discussed in a group format.
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An understanding by the participants of the processing conditions or a current process set-up sheet will greatly facilitate this discussion.
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Special Offer
Register 3 Participants From Your Organization And Get The 4th Participant For Free!
The promotion expiry date for each programmes differs. For more information on the exact expiry date of the promotion, feel free to contact us.
OTC Training Centre Sdn Bhd may at any time in its sole and absolute discretion withdraw, amend and/or alter the terms and conditions of the stated promotions without prior notice.
The promotion expiry date for each programmes differs. For more information on the exact expiry date of the promotion, feel free to contact us.
OTC Training Centre Sdn Bhd may at any time in its sole and absolute discretion withdraw, amend and/or alter the terms and conditions of the stated promotions without prior notice.
Schedules
Jul 29, 2024 - Jul 30, 2024
| Mon, Tue | 09:00 AM — 05:00 PM |
| No. of Days: | 2 |
| Total Hours: | 14 |
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OTC Training Centre Sdn Bhd is an innovation leader in the development and delivery of practical outsourcing training programs for the past 17 years. Since then, OTC has supported thousands of companies to upskills their employees with personalized content and learning solutions. Today, we have evolved to provide a full suite of outsourcing services in the learning and development field.
Our training programs are entitled to HRDCorp claim, with our trainers being certified by HRDCorp as well. As a training provider, we aspire to keep providing the best training to our respected clients to ensure their satisfaction while using our service as the training provider.
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