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Journal of Plastics Technology 2006/01

Quantitative Study of the Dimensional Stability of Injection Molded Parts Using Conventional and Microcellular Injection Molding and Microcellular Co-Injection Molding

This research investigated the effects of processing conditions on the dimensional stability in terms of shrinkage and warpage (S&W) behavior of a box-shaped polypropylene part using conventional injection molding, microcellular injection molding, and microcellular co-injection molding. Design of experiments (DOE) was used to analyze significant main and two-factor interactions. Results indicate that a large reduction in S&W can be achieved when using microcellular injection molding and microcellular co-injection molding. This paper also presents the effect of process conditions on the filling pattern and microstructure of various injection molded parts, as well as the spatial distribution of the microcellular core in microcellular co-injection molded parts.

Adam Kramschuster | Ryan Cavitt | Chris Shen | Donald Ermer | Lih-Sheng Turng
Polymer Engineering Center, Department of Mechanical Engineering, University of Wisconsin – Madison

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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.