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Experimental Study on the Filling of a Micro Injection Molding with Cylindrical Dot Patterns

  • H.-C. Chang and W.-B. Young
Published/Copyright: April 30, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 20 Issue 3

Abstract

This study is to investigate the fabrication of a mold insert with negative cylindrical dot micro features using the LIGA-Like process and molding of the component. The effects of molding conditions on the filling of the polymer melt into the negative features were experimentally studied. A parametric study of the effect of the molding conditions on the filling of microstructure in micro molding was conducted. Increase of the mold temperature or injection rate is an effective method to ensure the complete filling of the microstructure. The application of packing pressure was shown to improve the filling in the microstructure also. With the low aspect ratio used in this study (about 0.2), the microdot array can be completely filled with the right selections of injection rate and mold temperature without vacuum.

∗ Mail address: W.-B. Young, Inst. of Aeronautics and Astronautics, National Cheng Kung University Tainan, Taiwan, R.O.C. E-mail:

References

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Received: 2004-8-6
Accepted: 2005-3-4
Published Online: 2013-04-30
Published in Print: 2005-09-01

© 2005, Carl Hanser Verlag, Munich

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  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Assessment of the Degree of Mixedness of Filled Polymers
  5. Screw Extrusion
  6. Numerical Analysis of Rubber Moulding Using Finite Element Modelling
  7. Regular Contributed Articles
  8. Experimental Study on the Filling of a Micro Injection Molding with Cylindrical Dot Patterns
  9. The Gloss of Injection-Moulded Recovered Polypropylene
  10. Injection Moulding and Mechanical Properties of Recovered Polypropylene
  11. Advanced Finite Element 3D Injection Molding
  12. Using Multi-Objective Evolutionary Algorithms to Optimize Mechanical Properties of Injection Molded Parts
  13. On PVT and Rheological Measurements of Polymer Melts
  14. External Calibration in PA12 Tube Extrusion
  15. Screw Extrusion
  16. External Calibration in PA12 Tube Extrusion
  17. Regular Contributed Articles
  18. Two Dimensional Description of Pressure-Throughput Behaviour of Newtonian Materials Considering Wall Slippage Effects
  19. Experimental Studies and Modeling of Development of Dispersion and Fiber Damage in Continuous Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.1884

Articles in the same Issue

  1. Contents
  2. Contents
  3. Regular Contributed Articles
  4. Assessment of the Degree of Mixedness of Filled Polymers
  5. Screw Extrusion
  6. Numerical Analysis of Rubber Moulding Using Finite Element Modelling
  7. Regular Contributed Articles
  8. Experimental Study on the Filling of a Micro Injection Molding with Cylindrical Dot Patterns
  9. The Gloss of Injection-Moulded Recovered Polypropylene
  10. Injection Moulding and Mechanical Properties of Recovered Polypropylene
  11. Advanced Finite Element 3D Injection Molding
  12. Using Multi-Objective Evolutionary Algorithms to Optimize Mechanical Properties of Injection Molded Parts
  13. On PVT and Rheological Measurements of Polymer Melts
  14. External Calibration in PA12 Tube Extrusion
  15. Screw Extrusion
  16. External Calibration in PA12 Tube Extrusion
  17. Regular Contributed Articles
  18. Two Dimensional Description of Pressure-Throughput Behaviour of Newtonian Materials Considering Wall Slippage Effects
  19. Experimental Studies and Modeling of Development of Dispersion and Fiber Damage in Continuous Compounding
  20. PPS News
  21. PPS News
  22. Seikei-Kakou Abstracts
  23. Seikei-Kakou Abstracts
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