Table of Contents Author Guidelines Submit a Manuscript
Advances in Materials Science and Engineering
Volume 2014, Article ID 238251, 6 pages
Research Article

A Study on the Void Formation in Residual Wall Thickness of Fluid-Assisted Injection Molding Parts

1Molding & Forming Technology R&D Group, Korea Institute of Industrial Technology, 7-46 Songdo-dong, Yeonsu-gu, Incheon 406-840, Republic of Korea
2Department of Mechanical Engineering, Ajou University, San 5 Woncheon-dong, Yeongtong-gu, Suwon, Kyungki-do 443-749, Republic of Korea
3Department of Manufacturing Engineering, University of Texas Pan-American, Edinburg, TX 78539, USA

Received 23 December 2013; Accepted 22 April 2014; Published 9 June 2014

Academic Editor: Mohd Sapuan Salit

Copyright © 2014 Hyung-Pil Park et al. 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.

Linked References

  1. M. Knights, “Water injection molding makes hollow parts faster, lighter,” Plastics Technology, vol. 48, no. 4, pp. 42–47, 2002. View at Google Scholar · View at Scopus
  2. H. P. Heim and H. Potente, Specialized Molding Techniques, Plastics Design Library, New York, NY, USA, 2001.
  3. W. Michaeli, T. Jüntgen, and A. Brunswick, “WIT—en route to series production: first industrial application of the water injection technique,” Kunststoffe Plast Europe, vol. 91, no. 3, pp. 37–39, 2001. View at Google Scholar · View at Scopus
  4. S.-J. Liu and Y.-S. Chen, “Water-assisted injection molding of thermoplastic materials: effects of processing parameters,” Polymer Engineering and Science, vol. 43, no. 11, pp. 1806–1817, 2003. View at Google Scholar · View at Scopus
  5. S. Y. Yang and H. L. Chou, “Study on the residual wall thickness at dimensional transitions and curved sections in gas-assisted molded circular tubes,” Polymer Engineering and Science, vol. 42, no. 1, pp. 111–119, 2002. View at Publisher · View at Google Scholar · View at Scopus
  6. K.-Y. Lin, F.-A. Chang, and S.-J. Liu, “Using differential mold temperatures to improve the residual wall thickness uniformity around curved sections of fluid assisted injection molded tubes,” International Communications in Heat and Mass Transfer, vol. 36, no. 5, pp. 491–497, 2009. View at Publisher · View at Google Scholar · View at Scopus
  7. S.-J. Liu and C.-H. Lin, “An experimental study of water-assisted injection molding of plastic tubes with dimensional transitions,” Journal of Reinforced Plastics and Composites, vol. 26, no. 14, pp. 1441–1454, 2007. View at Publisher · View at Google Scholar · View at Scopus
  8. S.-J. Liu and W.-K. Chen, “Experimental investigation and numerical simulation of cooling process in water assisted injection moulded parts,” Plastics, Rubber and Composites, vol. 33, no. 6, pp. 260–266, 2004. View at Publisher · View at Google Scholar · View at Scopus
  9. S.-J. Liu, M.-J. Lin, and Y.-C. Wu, “An experimental study of the water-assisted injection molding of glass fiber filled poly-butylene-terephthalate (PBT) composites,” Composites Science and Technology, vol. 67, no. 7-8, pp. 1415–1424, 2007. View at Publisher · View at Google Scholar · View at Scopus
  10. G. Menges, W. Michaeli, and P. Mohren, How to Make Injection Molds, Hanser, Cincinnati, Ohio, USA, 2000.
  11. H. Aida and R. Hazawa, “Injection molding method for manufacturing a thermoplastic part free from sink marks using a void inducing member,” US patent no. 5232654, August 1993.
  12. D. H. Kim, “Partial frame process technology,” Polymer Science and Technology, vol. 7, no. 3, pp. 303–309, 1996. View at Google Scholar
  13. K. H. Ahn and D.-H. Kim, “Mechanism of void growth in the partial frame process,” Polymer Engineering and Science, vol. 38, no. 10, pp. 1708–1715, 1998. View at Google Scholar · View at Scopus
  14. F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer, John Wiley & Sons, New York, NY, USA, 2006.