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Licensed Unlicensed Requires Authentication Published by De Gruyter April 6, 2013

Optimization of Microcellular Injection Molding Parameters

S. J. A. Rizvi and N. Bhatnagar


Microcellular foamed polymeric products have found various applications depending upon their cell morphology. The microcellular injection molding process parameters have effect on the cell size, cell density and cell distribution. In order to develop desired cell morphology for a particular application, the set of injection molding parameters is required to be optimized for achieving a correct process window. In this paper an effort is made to study the effect of various injection molding processing parameters on cell morphology. Series of experiments were conducted for each of the processing parameter and the samples were observed under Scanning Electron Microscope (SEM). The trends of cell size and cell density with respect to the processing parameters were qualitatively analyzed. The results are useful for the processors who are interested in building up an understanding of this novel process and also to enable optimization of the set of processing parameters so that the desired microstructure of a foamed polymer can be obtained.

Mail address: Naresh Bhatnagar, III-178, Dept. Mechanical Engineering, IIT-Delhi, New Delhi-110016, India. E-mail:


Goel, S. K., Beckman, E. J., “Generation of Microcellular Polymeric Foams Using Supercritical Carbon Dioxide: Effect of Pressure and Temperature on Nucleation”, Polym. Eng. Sci., 34, 11371147(1994) DOI: 10.1002/pen.760341407Search in Google Scholar

Jacobsen, K., Pierick, D., “Using Thermally Insulated Polymer Film for Mold Temperature Control to Improve Surface Quality of Microcellular Injection Molded Parts”, SPE ANTEC Tech. Papers, 1929(2000)Search in Google Scholar

Kramschuster, A., et al., “Quantitative Study of Shrinkage and Warpage Behavior for Microcellular and Conventional Injection Molding”, Polym. Eng. Sci., 45, 1408(2005) DOI: 10.1002/pen.20410Search in Google Scholar

Kumar, V., Suh, N. P., “A Process for Making Microcellular Thermoplastic Parts”, Polym. Eng. Sci., 30, 13321339(1990) DOI: 10.1002/pen.760302010Search in Google Scholar

Okamoto, K. T., Microcellular Processing, 1st Edition, Hanser Publisher, Munich(2003)Search in Google Scholar

Yuan, M., et al., “Microcellular Nanocomposite Injection Molding Process”, SPE ANTEC Tech. Papers, 691–695 (2003)Search in Google Scholar

Received: 2009-01-29
Accepted: 2009-08-24
Published Online: 2013-04-06
Published in Print: 2009-11-01

© 2009, Carl Hanser Verlag, Munich

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