A Simulation Study on Warpage Analysis of Injection Moulded Plastic Part

  • Sanam Shikalgar Student, School of Polymer Engineering, MIT-WPU, Pune 411038, INDIA
  • Mahesh Zope Student, School of Polymer Engineering, MIT-WPU, Pune 411038, INDIA
  • Pratik Sonawane Student, School of Polymer Engineering, MIT-WPU, Pune 411038, INDIA
  • Deepti Marathe Associate Professor, School of Polymer Engineering, MIT-WPU, Pune 411038, INDIA
Keywords: Nylon, Runner System, Simulation, Warpage


A part to be injection molded is evaluated by simulation for warpage analysis. The plastic part is a supporting plate to be used in the oil filter and it’s made out of nylon material. The effect of various parameters from design to processing of plastic parts is considered and validated by simulation results. The research involved in this was designing mould, computer-aided engineering, simulation analysis, and determination of plastic part processing conditions.

In this work PA66 (Grade name – Zytel 70G13HS1LNC010) material is used and the material contains 13 % of fiber. Fiber orientation is nothing but the distribution of plastic melt inside the cavity and it also plays important role in deciding the warpage of part.

The effect of process parameters on part warpage is investigated from various aspects in comparison with the conventional runner system. Hot runner mould system with innovative cooling channel designs is good results-driven. Results of simulations reveal that elevated mould temperature reduces the unwanted freezing time during the injection phase and thus improves mouldability and enhances part quality. Under similar mould temperature conditions, the effect of process parameters on warpage decreases according to the following order, packing time, packing pressure, melt temperature, injection pressure, and cooling time respectively.


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Guo W, Hua L, & Mao H, et al. (2012). Prediction of warpage in plastic injection molding based on the design of experiments. J Mech Sci Technol, 26, 1133–1139.

Chen DC, Huang CK, & Lin JW. (2017). Warpage analysis of a plastic spur gear injection molding. Smart Sci; 5, 206–213.

Liao SJ, Chang DY, & Chen HJ, et al. (2004). Optimal process conditions of shrinkage and warpage of thin-wall parts. Polym Eng Sci, 44, 917–928.

Mohamed OA, Masood SH, & Saifullah A. (2013). A simulation study of conformal cooling channels in plastic injection molding. Int J Eng Res, 2, 344–348.


Amran M, Salmah S, & Izamshah R, et al. (2015). Warpage analysis of different number cooling channels for dumbbell plastic part in injection moulding. Appl Mech Mater, 761, 8–11.

Venkatesh G, Ravi Kumar Y, & Raghavendra G. (2017). Comparison of straight line to conformal cooling channel in injection molding. Mater Today Proc, 4, 1167–1173.

Hidayah MHN, Shayfull Z, & Nasir SM, et al. (2017). Warpage analysis in injection moulding process. AIP Conf Proc; 1885. DOI: 10.1063/1.5002244.

Kitayama S, Yokoyama M, & Takano M, et al. (2017). Multi-objective optimization of variable packing pressure profile and process parameters in plastic injection molding for minimizing warpage and cycle time. Int J Adv Manuf Technol, 92, 3991–3999.

Singh G, Pradhan MK, & Verma A. (2018). Multi response optimization of injection moulding process parameters to reduce cycle time and warpage. Mater Today Proc, 5, 8398–8405.

How to Cite
Sanam Shikalgar, Mahesh Zope, Pratik Sonawane, & Deepti Marathe. (2021). A Simulation Study on Warpage Analysis of Injection Moulded Plastic Part. International Journal of Engineering and Management Research, 11(3), 186-196. https://doi.org/10.31033/ijemr.11.3.30