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Journal of Plastics Technology 2013/05

Minimization of warpage of injection-molded parts through ideal wall thickness distribution - a feasibility study

Minimization of warpage of injection-molded parts through ideal wall thickness distribution - a feasibility study

The injection molded parts warpage, represented by the geometric difference between the actual and the target part, is a permanent problem during the development of new injection molded parts. While most efforts to reduce the part warpage have resulted in optimization of the processing parameter and gate location, this study presents a method which aims to reduce the part warpage by optimization of its wall thickness distribution. This method is based on an evolutionary optimization algorithm, which interacts with the injection moulding simulation. The procedure is fully automatic and results in a STL-File for the optimized geometry of the cavity. The objective of the present study is to evaluate the effi-ciency of this method for a non-complex geometry.

MSc ME ETH Mario Studer | Prof. Dr. –Ing. Frank Ehrig
Institut für Werkstofftechnik und Kunststoffverarbeitung, Hochschule für Technik Rapperswil, Schweiz

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Simcon GmbH

Schumanstr. 18a
DE 52146 Würselen
Tel.: 02405 64571-0
Fax: 02405 64571-20

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The Journal

The Journal of Plastics Technology is a peer reviewed internet periodical published under the auspices of the Scientific Alliance of Polymer Technology (WAK)


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International Polymer Processing

International Polymer Processing, the journal of the Polymer Processing Society, is a discussion forum for the world-wide community of engineers and scientists in the field of polymer processing.

The journal covers research and industrial application in the very specific areas of designing polymer products, processes, processing machinery and equipment.


International Polymer Processing


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The Journal of Plastics Technology is indexed in SCOPUS, the largest abstract and citation database of peer-reviewed literature.