Home Mold for Manipulation Microstructure Development
Article
Licensed
Unlicensed Requires Authentication

Mold for Manipulation Microstructure Development

  • C. A. Silva , J. C. Viana , G. R. Dias and A. M. Cunha
Published/Copyright: April 30, 2013
Become an author with De Gruyter Brill
Submit Manuscript Author Information
International Polymer Processing
From the journal International Polymer Processing Volume 20 Issue 1

Abstract

The control of microstructure development in injection molding had attracted several important studies in the recent years, being well established that the thermo-mechanical environment imposed to the polymer melt depends on the material properties, molding geometry and processing conditions.

An entirely new design of an injection mold RCEM (Rotation, Compression and Expansion Mold) was developed and implemented, allowing for a wide variation of the filling and packing conditions in a flat disk geometry. One of the cavity walls (the ejection side) can rotate or move with a linear movement during the injection and holding stages. This enables several filling sequences and the variation of the cavity thickness. Two electric servomotors are use to directly drive those movements. Two temperatures and pressure sensors allow for the on-line process monitoring.

Several examples of the potential uses of the RCEM are shown for the cases of amorphous and semicrystalline polymers. Results obtained with short-fiber reinforced polypropylene are also presented.

∗ Mail address: Cristina Silva, Department of Polymer Engineering, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal E-mail:

References

1 Cunha, A. M, Godinho, J. S., Viana, J. C., in: Processing, Microstructure, Properties Relationships in Injection Molding Products, NATO-ASI Series, Cunha, A. M., FakirovS. (Eds.), Kluver Academics (2000).Search in Google Scholar

2 Viana, J. C., Cunha, A. M., Billon, N.: J. Mat. Sci.36, p. 4411 (2001).10.1023/A:1017970416968Search in Google Scholar

3 Viana, J. C., Cunha, A. M, Billon., N.: Polymer, 43, p. 4185 (2002).10.1016/S0032-3861(02)00253-7Search in Google Scholar

4 Viana, J. C.: Polymer45, p. 993 (2004).10.1016/j.polymer.2003.12.001Search in Google Scholar

5 UK Patent GB 2170-142-B (1987), Allan, P. S., Bevis, M. J..Search in Google Scholar

6 Allan, P. S., Bevis, M. J.: Plast. Rubb. Proc. Appl.7, p. 3 (1987).Search in Google Scholar

7 Gutjahr, L. M., Becker, H.: Kunststoffe, 79, p. 874 (1989).Search in Google Scholar

8 Kalay, G., Allan, P. S., Bevis, M. J.: Kunststoffe87, 6, p. 768 (1997).Search in Google Scholar

9 Ogbonna, C. I., Kalay, G., Allan, P. S., Bevis, M. J.: J. Appl. Polym. Sci.58, p. 2131 (1995).10.1002/app.1995.070581126Search in Google Scholar

10 Allan, P. S., Bevis, M. J.: Compos. Manufact.1, p. 79 (1990).10.1016/0956-7143(90)90240-WSearch in Google Scholar

11 Pinwill, I. E., Ahmad, F., Allan, P. S., Bevis, M. J.: Powder Metallurgy35, p. 2 (1992).10.1179/pom.1992.35.2.107Search in Google Scholar

12 Allan, P. S., Bevis, M. J.: Paper presented at Int. Conf. on New Materials and their Applications, University of Warwick, England (1990).Search in Google Scholar

13 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at Polymer Processing Society Annual Meeting, Guimarães, Portugal (2002).Search in Google Scholar

14 Silva, C. A., Viana, J. C., Dias, G. R., Cunha, A. M.: Paper presented at Polymer Processing Society Regional Meeting, Taiwan (2002).Search in Google Scholar

15 Silva, C. A., Viana, J. C., Dias, G. R., Cunha, A. M.: Paper presented at Antec, Nashville, USA (2003).Search in Google Scholar

16 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at Polymer Processing Society Annual Meeting, Melbourne, Australia (2003).Search in Google Scholar

17 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at 12th International Conference on Deformation, Yield and Fracture of Polymers, Cambridge, UK (2003).Search in Google Scholar

18 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at Polychar 12, Guimarães, Portugal (2004).Search in Google Scholar

19 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at Polymer Crystallization and Structure Formation in Processing, Linz, Austria (2003).Search in Google Scholar

20 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at Sampe – JISSE8, Japan (2003).Search in Google Scholar

21 Silva, C. A., Viana, J. C., Cunha, A. M.: Paper presented at ANTEC, Chicago, USA (2004).Search in Google Scholar

22 Bay, R. S., TuckerIII, C. L.: Polym. Eng. Sci.32, 4, p. 240 (1992).10.1002/pen.760320404Search in Google Scholar

Received: 2004-5-25
Accepted: 2004-10-18
Published Online: 2013-04-30
Published in Print: 2005-03-01

© 2005, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. New at International Polymer Processing
  5. Regular Contributed Articles
  6. Preparing of Homogeneous Solution of Ultrahigh Molecular Weight PAN
  7. Non-linear Viscoelastic Behavior of PVC Plastisol
  8. Algorithms for Two Gate Optimization in Injection Molding
  9. Viscoelastic Properties of Flexible Organic Fiber Composites
  10. Mold for Manipulation Microstructure Development
  11. Simultaneous Biaxial Stretching of PP Resins of Varying Tacticity
  12. Rotational Moulding of PVC Plastisol
  13. Drawability of As-spun PP Fibres
  14. Melt Fracture of Linear PE
  15. Investigation of the Cooling Jets Used in the Blown Film Process
  16. Non-linear Crystalline Spherulitic Growth Behavior for LLDPE
  17. Design Sensitivity Analysis for the Optimization of the Injection Molding Process
  18. Preparation and Characteristics of Reactive Blends of Phosphate-containing Maleimide and Epoxy
  19. Easy Tear Multilayer Film of Biaxially Oriented PA6/MXD6 by Double Bubble Tubular Film Process
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.1847

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. New at International Polymer Processing
  5. Regular Contributed Articles
  6. Preparing of Homogeneous Solution of Ultrahigh Molecular Weight PAN
  7. Non-linear Viscoelastic Behavior of PVC Plastisol
  8. Algorithms for Two Gate Optimization in Injection Molding
  9. Viscoelastic Properties of Flexible Organic Fiber Composites
  10. Mold for Manipulation Microstructure Development
  11. Simultaneous Biaxial Stretching of PP Resins of Varying Tacticity
  12. Rotational Moulding of PVC Plastisol
  13. Drawability of As-spun PP Fibres
  14. Melt Fracture of Linear PE
  15. Investigation of the Cooling Jets Used in the Blown Film Process
  16. Non-linear Crystalline Spherulitic Growth Behavior for LLDPE
  17. Design Sensitivity Analysis for the Optimization of the Injection Molding Process
  18. Preparation and Characteristics of Reactive Blends of Phosphate-containing Maleimide and Epoxy
  19. Easy Tear Multilayer Film of Biaxially Oriented PA6/MXD6 by Double Bubble Tubular Film Process
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 28.11.2025 from https://www.degruyterbrill.com/document/doi/10.3139/217.1847/html?lang=en
Scroll to top button