An investigation on warpage analysis in plastic injection moulding

Search Swinburne Research Bank

0912 Materials Engineering

Home

List of Titles

An investigation on warpage analysis in plastic injection moulding

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/201725

Check Swinburne's subscriptions for full text availability

Title: An investigation on warpage analysis in plastic injection moulding
Author(s): Saifullah, Abul B. M.; Masood, Syed H.
Abstract: In an injection moulded part, warpage is the distortion caused by non-uniform shrinkage within the plastic part. When looking critically at the causes of warpage, it is found that several key parameters of the moulding process have some effect on the warpage. However, the two major categories that contribute to warpage include the part design and the mould design. In mould design, the gate location, runner/gate system and cooling system design are the major factors affecting not only the warpage and part quality but also the injection moulding cycle time. This paper presents an investigation of using different cooling system configuration on warpage and shrinkage of an industrial plastic part with the aim of determining which cooling configuration will provide minimum warpage and cycle time. As conventional injection mould cooling design is based on straight drilling, it limits the geometric complexity of the cooling design, especially curved shape cooling channels. Nowadays, new technology of advanced rapid tooling based on solid freeform fabrications can be been used to provide conformal cooling channels in injection moulds. In this paper, several type of cooling channels are analysed to compare the performance in terms of warpage and shrinkage and to determine which configuration is suitable for minimizing warpage. Autodesk Moldflow Insight (AMI) simulation software is applied to examine the results of the cooling performances and warpage analysis.
Publication type: Journal article
Research centre: Swinburne University of Technology. Faculty of Engineering and Industrial Sciences
Source: Advanced Materials Research: Advances in Materials and Processing Technologies II: selected papers from the International Conference on Advances in Materials and Processing Technologies (AMPT 2009), Kuala Lumpur, Malaysia, 26-29 October 2009 / M. S. J. Hashmi, S. Mridha and S. Naher (eds.), Vol. 264-265, pp. 433-438
Publication year: 2011
FOR Code(s): 0912 Materials Engineering
Keyword(s): Injection moulding; Shrinkage and cooling channels; Warpage
Publisher: Trans Tech Publications
ISSN: 1022-6680 (series ISSN)
ISBN: 9783037850534, 3037850531
Publisher URL: http://dx.doi.org/10.4028/www.scientific.net/AMR.264-265.433
Peer reviewed