Improving quality through statistical process control in Bayeh Mekonnen polypropylene bag factory

International Journal of Mechanical Engineering

© 2020 by SSRG - IJME Journal

Volume 7 Issue 4

Year of Publication : 2020

Authors : Temesgen Hailegiorgis Abebe, Mulugeta Tadesse

10.14445/23488360/IJME-V7I4P102

How to Cite?

Temesgen Hailegiorgis Abebe, Mulugeta Tadesse, "Improving quality through statistical process control in Bayeh Mekonnen polypropylene bag factory," SSRG International Journal of Mechanical Engineering, vol. 7,  no. 4, pp. 11-24, 2020. Crossref, https://doi.org/10.14445/23488360/IJME-V7I4P102

Abstract:

This article aims to allow Bayeh Mekonnen polypropylene (PP) bag factory in Bahir Dar, Ethiopia to achieve in producing qualified product and customer requirement based product through which the company reduces defects, variations, and quality costs by implementing statistical quality control to overcome all quality problems in the company. It is mainly concentrated in the tape plant and cutter sections of the company. Because most of the quality problems are incurred in these sections, to address such cases, this article mainly focuses on improving quality by using statistical quality control and control chart analysis to show the variation and stability of the process. According to the analysis conducted, the process control chart is out of control, then replacement analysis is utilized for existing and new cutter machines. Moreover, the experiment's design is analyzed because of the control chart for the tape plant section. The company can save 143,640 ETB per two months by applying the proposed parameter settings (annealing temperature, Pressure, speed of Feed, and melting Temperature).

Keywords:

Control charts, DOE, Quality control, SPC

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