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International Journal of Polymer Science
Volume 2014, Article ID 718926, 8 pages
Research Article

Correlation of Processing, Inner Structure, and Part Properties of Injection Moulded Thin-Wall Parts on Example of Polyamide 66

Institute of Polymer Technology, University Erlangen-Nuernberg, Am Weichselgarten 9, 91058 Erlangen, Germany

Received 2 September 2014; Revised 26 November 2014; Accepted 30 November 2014; Published 21 December 2014

Academic Editor: Jan-Chan Huang

Copyright © 2014 Dietmar Drummer and Steve Meister. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In micro- and thin-wall injection moulding the process conditions affect the developed internal structures and thus the resulting part properties. This paper investigates exemplarily on polyamide 66 the interactions of different cooling conditions on the morphological and crystalline structures. The investigations reveal that a slow cooling rate of the melt results in a homogeneous morphology and a higher degree of crystallinity and also a favoured crystalline structure. Consequently, the dielectric behaviour and light transmitting part properties are affected.