Applying Six sigma techniques in plastic injection molding industry

Tarek Safwat · Aziz Ezzat

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Quality and Supply Management Management and Optimization Techniques Management Systems and Quality Improvement

Abstract

This paper presents an approach to implement a six sigma technique to decrease the scrap rate in a plastic injection molding plant. Using a case study of NATPACK Co. a plastic packaging company in Al Obour City, Cairo, Egypt. A Six sigma DMAIC methodology was applied to structure the study and scope the project. DMAIC which stands for define, measure, analyze, improve, control is widely used in many six sigma projects since the 1990s. The proper tools that are suitable for injection molding industry needs were investigated. The primary tools used are SIPOC, MSA, FMEA, P-control charts, hypothesis testing. In this case study we compare the average scrap rate for the ¿before¿ study period with the average scrap rate of the ¿after¿ study period.

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References

2000The Six Sigma Way: How GE, Motorola, and Other Top Companies are Honing Their Performance 2002Lean Six Sigma : combining Six Sigma quality with lean speed 2004Juran Institute's six sigma : breakthrough and beyond : quality performance breakthrough methods 2001Six Sigma and Beyond 2004Six Sigma and Beyond: Statistical Process Control 2003The power of ultimate Six Sigma : Keki Bhote's proven system for moving beyond quality excellence to total business excellence 2002Six Sigma and Beyond: Statistics and Probability, Volume III

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