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High-speed Melt Spinning of PET

Mechanism of Fiber Structure Formation using a Liquid Isothermal Bath as Modifier
  • T. Kikutani , J. Radhakrishnan , M. Sato , N. Okui and A. Takaku
Published/Copyright: May 28, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 11 Issue 1

Abstract

The high-speed spinning process of poly(ethylene terephthalate) (PET) was modified by introducing a liquid isothermal bath (LIB) which was kept at a temperature of 155°C and placed at a distance of 150 cm or 200 cm below the spinneret. The structure and mechanical properties of the as-spun fibers thus produced in the take-up speed range of 1 to 7 km/min were characterized. The results showed that the introduction of the LIB significantly influences the structural development of the as-spun fibers. The fibers produced using the LIB in the spinline showed significantly higher birefringence and crystallinity compared to the fibers produced using a standard high-speed spinning process. A semi-quantitative numerical simulation was performed with the incorporation of the LIB in the spinline to understand the mechanism of fiber structure formation during the modified high-speed spinning process of PET. The results showed that the solidification stress is considerably high when the solidification was assumed to occur at a position close to the exit of the LIB. The enhancement of molecular orientation was attributed to the increased frictional stress induced by the liquid layer whereas the spinline crystallization was found to be influenced strongly by the temperature of the liquid.

* Mail address: Prof. Dr. T. Kikutani, Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152, Japan
Received: 1995-6-29
Accepted: 1995-9-8
Published Online: 2013-05-28
Published in Print: 1996-03-01

© 1996, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Seventeenth in a Series: Reifenhäuser – From Blacksmiths to Master Integrated Screw Extrusion System Manufacturers
  5. Invited Paper
  6. 35 Years of Studies of Mixing of Rubber and Viscoelasticity
  7. Mixing
  8. Melt Strength and Elastic Behaviour of LLDPE/LDPE Blends
  9. Screw Extrusion
  10. Melting and Blending in a Modular Co-Rotating/Counter-Rotating Twin Screw Extruder
  11. A Physico-Mathematical Model for Solids Conveying in Co-Rotating Twin Screw Extruders
  12. Fibers and Films
  13. High-speed Melt Spinning of PET
  14. Die Extrusion
  15. Evaluation of the FAN Technique for Profile Die Design
  16. Molding
  17. Analysis of the Mold Filling Process with Phase Change Considering the Non-steady Effect
  18. Analysis of the Local Volume Flow Rate of Polymers During Injection Molding
  19. Surface Defect Formation in the Injection Molding of Acrylonitrile-Styrene-Acrylate Polymers
  20. Injection Molding of Microcomposites Based on Polypropylene and Thermotropic Liquid Crystalline Polymers
https://doi.org/10.3139/217.960042

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Seventeenth in a Series: Reifenhäuser – From Blacksmiths to Master Integrated Screw Extrusion System Manufacturers
  5. Invited Paper
  6. 35 Years of Studies of Mixing of Rubber and Viscoelasticity
  7. Mixing
  8. Melt Strength and Elastic Behaviour of LLDPE/LDPE Blends
  9. Screw Extrusion
  10. Melting and Blending in a Modular Co-Rotating/Counter-Rotating Twin Screw Extruder
  11. A Physico-Mathematical Model for Solids Conveying in Co-Rotating Twin Screw Extruders
  12. Fibers and Films
  13. High-speed Melt Spinning of PET
  14. Die Extrusion
  15. Evaluation of the FAN Technique for Profile Die Design
  16. Molding
  17. Analysis of the Mold Filling Process with Phase Change Considering the Non-steady Effect
  18. Analysis of the Local Volume Flow Rate of Polymers During Injection Molding
  19. Surface Defect Formation in the Injection Molding of Acrylonitrile-Styrene-Acrylate Polymers
  20. Injection Molding of Microcomposites Based on Polypropylene and Thermotropic Liquid Crystalline Polymers
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