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Influence on Product Quality by pvT-Optimised Processing in Injection Compression Molding

  • Ch. Hopmann , A. Reßmann and J. Heinisch
Published/Copyright: May 10, 2016
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Abstract

The production of functional optical parts made of plastics is a growing market and the associated production processes have to be developed to fulfil the increasing quality requirements. In this paper an alternative injection compression molding process using the pvT-behavior of the plastics material is compared to the conventional processing method using an isobaric process path. For both control strategies a cavity pressure loop-control is implemented and used. According to measurements of the mold surface reproduction accuracy and internal properties of the molded part the processing method using the pvT-behavior results in a higher optical part quality in the same cycle time compared to the isobaric processing method.


*Correspondence address, Mail address: Julian Heinisch, Institute of Plastics Processing (IKV) in Industry and the Skilled Crafts at RWTH Aachen University, Pontstr. 49, 52062 Aachen, Germany, E-mail:

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Received: 2014-12-22
Accepted: 2015-12-06
Published Online: 2016-05-10
Published in Print: 2016-05-29

© 2016, Carl Hanser Verlag, Munich

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