The MuCell process for producing microcellular injection molded parts is accepted as a technology for providing a more dimensionally stable part through a reduction in residual stress with increased productivity over compact molded parts. As commercial acceptance of the process grows, processors want to apply currently accepted methods of in-mold monitoring to the MuCell process. However, these methods do not necessarily transfer directly to the MuCell Process due to significantly different in-mold pressure and temperature conditions that result from cell growth. The paper looks at temperature and pressure profiles associated with the MuCell microcellular foaming process and how these can be used to monitor the process for part consistency.
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