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http://dx.doi.org/10.11627/jkise.2016.39.1.130

A Study on the Improvement of Plastic Boat Manufacturing Process Using TOC & Statistical Analysis  

Yoon, Gun-Gu (Dept. of Industrial & Management Engineering, Hanbat National University)
Kim, Tae-Gu (Dept. of Industrial & Management Engineering, Hanbat National University)
Lee, Dong-Hyung (Dept. of Industrial & Management Engineering, Hanbat National University)
Publication Information
Journal of Korean Society of Industrial and Systems Engineering / v.39, no.1, 2016 , pp. 130-139 More about this Journal
Abstract
The purpose of this paper is to analyze the problems and the sources of defective products and draw improvement plans in a small plastic boat manufacturing process using TOC (Theory Of Constraints) and statistical analysis. TOC is a methodology to present a scheme for optimization of production process by finding the CCR (Capacity Constraints Resource) in the organization or the all production process through the concentration improvement activity. In this paper, we found and reformed constraints and bottlenecks in plastic boat manufacturing process in the target company for less defect ratio and production cost by applying DBR (Drum, Buffer, Rope) scheduling. And we set the threshold values for the critical process variables using statistical analysis. The result can be summarized as follows. First, CCRs in inventory control, material mix, and oven setting were found and solutions were suggested by applying DBR method. Second, the logical thinking process was utilized to find core conflict factors and draw solutions. Third, to specify the solution plan, experiment data were statistically analyzed. Data were collected from the daily journal addressing the details of 96 products such as temperature, humidity, duration and temperature of heating process, rotation speed, duration time of cooling, and the temperature of removal process. Basic statistics and logistic regression analysis were conducted with the defection as the dependent variable. Finally, critical values for major processes were proposed based on the analysis. This paper has a practical importance in contribution to the quality level of the target company through theoretical approach, TOC, and statistical analysis. However, limited number of data might depreciate the significance of the analysis and therefore it will be interesting further research direction to specify the significant manufacturing conditions across different products and processes.
Keywords
TOC; Rotational Molding Process; Logistic Regression; ANOVA;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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1 Hurley, S. and Whybark, D., Inventory and Capacity Trade-offs in a Manufacturing Cell, International Journal of Production Economics, 1999, Vol. 59, No. 3, pp. 203-212.   DOI
2 John, K.K., Polypropylene Structure, Blends and Composites : Composites, Chapman and Hall Press, London, 1995.
3 Jung, N.K., "TOC Golden Role," HanEeon Community Press, 2002, pp. 14-96.
4 Kee, R. and Schmidt, C., A Comparative Analysis of Utilizing Activity-based Costing and the Theory of Constraints for Making Product-mix Decisions, International Journal of Production Economics, 2000, Vol. 63, pp. 1-17.   DOI
5 Kim, J.K., Kim, C.S., Lim, S.J., Kim, H.M., Choi, S.W., and Yoon, H.S., Research Results and Trends Analysis on Process Fraction of Nonconforming Control Charts under Non-Normal Process, Korean Institute of Industrial Engineers, Proceedings of the Annual Autumn Meeting, 2013, pp. 269-273.
6 Kown, J.O., Lee, J.K., Kim, H.C., and Kim, J.S., Evaluation of FRP Test Boat Constructed by New Production Systems, Proceedings of the Annual Autumn Meeting, 2001, pp. 100-103.
7 Lee, D.K., Jeong, Y.K., and Shin, J.G., Development of a Factory Layout Design System using Leisure-Boat Building Process, Journal of the Society of Naval Architects of Korea, 2013, Vol. 50, No. 1, pp. 14-24.   DOI
8 Lee, J.K., Han, H.D., and Kim, H.J., A study on Quality Assurance for Rotational Molding Products, Trans. Korean Soc. Mech. Eng. A, 2004, Vol. 28, No. 6, pp. 826-837.   DOI
9 Lee, S.H., Bae, H.R., Won, H.J., Kim, H.T., and Kang, S.H., Efficient Execution Method fot Business Process Management Using TOC Concepts, Korea Electronic Commerce Research, 2010, Vol. 10, No. 1, pp. 61-77.
10 Lee, S.W., Lee, J.H., Hong, J.W., and Lee, Y.J., A Study on Strategies to Develop the Marine Lesure Boat Industry, Korea Maritime Institute, Korea Maritime Institute Report 2009, 2009.
11 Linhares, A., Theory of Constraints and the Combinatorial Complexity of the Product-mix Decision, International Journal of Production Economics, 2009, Vol. 12, No. 1, pp. 121-129.
12 Scott, M, Applied Logistic Regression Analysis, Sage Publications, Inc., 2002.
13 Aggarwal, S.C., MRP, JIT, OPT, GMS : Making Sense of Production Operations Systems, Harvard Business Review, 1985, Vol. 63, pp. 8-16.
14 Bae, W.T. and Shin, D.W., Quantitative Evaluation of Plasticity and Extension for Extruding Body, Journal of Korean Ceramic Society, 2002, Vol. 39, No. 11, pp. 1048-1054.   DOI
15 Park, K.J., Shin, S.M., and Jeong H.J., An Optimal Process Design Using a Robust Desirability Function (RDF) Model to Improve a Process/Product Quality on a Pharmaceutical Manufacturing Process, Journal of the Society of Korea Industrial and Systems Engineering, 2010, Vol. 33, No. 1, pp. 1-9.
16 POLYPIA Company, http://www.polypia.co.kr., 2014.
17 Sale, M.L. and Inman, R.A., Survey-based Comparison of Performance and Change in Performance of Firms Using Traditional Manufacturing, JIT and TOC, International Journal of Production Research, 2003, Vol. 41, No. 4, pp. 829-844.   DOI
18 Song, C.Y., Lee, D.S., and Shin, S.W., Application of TOC and TRIZ for Paradox management, Journal of the Society of Korea Industrial and Systems Engineering, 2010, Vol. 33, No. 2, pp. 72-80.
19 Yoon, D.J., Kim, S.J., Choi, S.U., and Na, K.H., The Cold Repressing Process of Sintered Preform, The Korea Society for Technology of Plasticity Conference, 1997, pp. 281-286.
20 Chakravorty, S.S. and Atwater, J.B., The Impact of Free Goods the Performance of Drum-buffer-rope Scheduling Systems, International Journal of Production Economics, 2005, Vol. 95, pp. 347-357.   DOI
21 Cho, J.R. and Ha, J.W., Integrated Framework combining Six Sigma and TOC-Thinking Process : A Case Study, Journal of The Korean Institute of Plant Engineering, 2009, Vol. 14, No. 1, pp. 11-19.
22 Cho, S.S., Study of Structural Design of Polyethylene Pleasure Boat' Trans, Korean Soc. Mech. Eng. A, 2012, Vol. 36, No. 12, pp. 1551-1561.   DOI
23 Cooper, D. and Schindler, P.S., Business Research Methods, Published by McGraw-Hill Higher Education Companies Inc, New York, 2003.
24 Dong, Y.B., The Prospects and the Present Condition of Plastic Industry in Japan, The Monthly Packaging world, 2011, No. 216, pp. 128-134.
25 Duclos, L.K. and Spencer, M.S., The Impact of a Constraint Buffer in a Flow Shop, International Journal of Production Economics, 1995, Vol. 42, pp. 175-185.   DOI
26 Frank, E.H, Regression Modeling Strategies, Springer, 2015.
27 Goldratt, E.M., "The Goal," North River Press, New York, 1992.
28 Gupta, M. and Snyder, D., Comparing TOC with MRP and JIT : a Literature Review, International Journal of Production Research, 2009, Vol. 47, No. 13, pp. 3705-3739.   DOI
29 Hong, S.G., Byun, J.H., and Lee, S.K., Fabrication and Characterization of 3D Woven Textile Reinforced Thermoplastic Composites, The Korea Society for Composite Materials, 2007, Vol. 16, No. 2, pp. 33-46.
30 HPT Company, http://www.polytank.kr/molding/mold2.php, 2014.