Optimization of Injection Moulding Process Parameters for Manufacturing Plastic Components (PBT) Using Taguchi Method (TM)

Abstract:

In this Paper, the application of Taguchi Method (TM) on the process parameters of Injection Moulding of Polybutylene Terephthalate (PBT) is presented. The influence of process parameters, such as Injection Pressure, Suckback Pressure, Injection Time, Cooling Time, Zone 1 Temperature & Zone 2 Temperature (Barrel Temperatures) on Dark Spots and Short Shots (defects) were investigated using the Orthogonal Array L₁₆ of Taguchi Method for 6 factors at 2 levels each with the response being percent defectives. It was found that Injection Pressure, Injection Time & Zone 1 Temperature had a major effect on the response. After the application of Taguchi Method, the rejection rate dropped down to 5.84% from 11.33%, which is a 48.45% reduction.

• Periodical: Materials Science Forum (Volume 969)
• Pages: 775-780
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.969.775
• Online since: August 2019
• Authors: Rajendra Khavekar*, Hari Vasudevan, Gosar Vimal
• Keywords: DoE, Injection Moulding, Optimization, PBT, Taguchi Method

References

[2] Raymond H. Mayers, Douglas C. Montgomery and Christine M. Anderson, Response Surface Methodology, Third Edition, Wiley & Sons INC.

[3] Sajjan Lal and Hari Vasudevan, Optimization of Injection Moulding Process Parameters in the Moulding of Low Density Polyethylene (LDPE), IJERD, 7 (2013) 35-39.

[4] Wu Lin Chen, Finding Effeicient frontier of process parameters for plastic Injection Moulding, JIEI (2013) 9-25.

[5] M. Packianather, F.Chan, C.Girripfiths and D.T. Pham, Micro Injection Moulding process parameters, CIRP Conf. on Intelligent Computation in Manf. Engineering. 12 (2013) 300-305.

DOI: 10.1016/j.procir.2013.09.052

[6] Mathivanan, M. Nouby and R. Vidhya, Minimization of Sink mark defects in Injection Moulding process of Taguchi Method, IJEST, 2 (2010) 13-22.

DOI: 10.4314/ijest.v2i2.59133

[7] G. V. Pujari and V. R. Naik, Optimization of parameters and minimization of defect by applying Taguchi & Moldflow method for Injection Moulding component, IJATES, 3 (2015) 95-101.

[8] M. Kavade and S. D. Kadam, Parameter optimization of Injection Moulding of polypropylene by using Taguchi method, IOSR, 4(2012) 49-58.

DOI: 10.9790/1684-0444958

[9] N. Mehat, S. Kamaruddin and A. R. Othman, Reducing the shrinkage in plastic Injection Moulded Gear via Grey-based-Taguchi Optimization method, Proceedings of the World congress on Engineering, 3(2012).

[10] K. Kamaruddin S., Khan Z. A. and Wan K. S., The use of the Taguchi method in determining the optimum plastic Injection Moulding parameters for the production of a consumer product, Journal Mekanikal, 18( 2004) 98-110.