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Numerical Investigation of Hot Embossing Filling Characteristics

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Published/Copyright: March 26, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 22 Issue 3

Abstract

In the present study, we aim to investigate the basic flow and filling characteristics in the hot embossing filling stage, which depend on the geometry and processing conditions. For this purpose, we have developed a numerical analysis to simulate hot embossing filling using the finite element method and verified the developed program using the existing experimental data. As s basic study to understand hot embossing filling we have chosen a simple rectangular cavity with repeating protruded parts as a computational domain. The filling pattern was found to be significantly influenced by the variation of thickness of polymer substrate for the same stamp geometry, thermal boundary condition, and the embossing time. Filling from the border of the cavity is clearly observed as the thickness of polymer substrate decreases under the equal wall temperature condition. As for the effect of unequal temperature at the stamp and solid base plate, we found that the filling pattern has been affected by the temperature difference between the two surfaces and embossing time. The localized uprising flow results from the thermal boundary condition and subsequent change in the effective thickness of polymer substrate having enough fluidity to deform.

∗ Mail address: T. H. Kwon, Department of Mechanical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Pohang, Kyungbuk 790–784, South Korea. E-mail:

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Received: 2006-3-19
Accepted: 2007-4-5
Published Online: 2013-03-26
Published in Print: 2007-07-01

© 2007, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Invited Review Paper
  4. Reactive Processing of Thermoplastic Polymers: A Review of the Fundamental Aspects
  5. Regular Contributed Articles
  6. Modeling and Practice of Ethanol-devolatilization of Silica-silane Rubber Compoundsin an Internal Mixer
  7. Numerical Investigation of Hot Embossing Filling Characteristics
  8. A New Scheme for Controlling Part Cooling in Injection Molding
  9. Dynamically Vulcanized Nanocomposite Thermoplastic Elastomers Based on EPDM/PP (Rheology & Morphology)
  10. An Integrated Approach for Numerical Analysis of Coupled Flow and Heat Transfer in Co-rotating Twin Screw Extruders
  11. Crystallinity and Linear Rheological Properties of Polymers
  12. Functionalization of PP with Sulfonyl Azide through Reactive Processing
  13. PPS News
  14. PPS News
  15. Seikei-Kakou Abstracts
  16. Seikei-Kakou Abstracts
https://doi.org/10.3139/217.0029

Articles in the same Issue

  1. Contents
  2. Contents
  3. Invited Review Paper
  4. Reactive Processing of Thermoplastic Polymers: A Review of the Fundamental Aspects
  5. Regular Contributed Articles
  6. Modeling and Practice of Ethanol-devolatilization of Silica-silane Rubber Compoundsin an Internal Mixer
  7. Numerical Investigation of Hot Embossing Filling Characteristics
  8. A New Scheme for Controlling Part Cooling in Injection Molding
  9. Dynamically Vulcanized Nanocomposite Thermoplastic Elastomers Based on EPDM/PP (Rheology & Morphology)
  10. An Integrated Approach for Numerical Analysis of Coupled Flow and Heat Transfer in Co-rotating Twin Screw Extruders
  11. Crystallinity and Linear Rheological Properties of Polymers
  12. Functionalization of PP with Sulfonyl Azide through Reactive Processing
  13. PPS News
  14. PPS News
  15. Seikei-Kakou Abstracts
  16. Seikei-Kakou Abstracts
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