On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
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W.-G. Hahm
Abstract
To investigate the orientation development behavior in high-speed in-line drawing process of poly(ethylene terephthalate) filament, simultaneous on-line measurements of diameter and optical retardation were conducted under various spinning and drawing conditions. In the measurement of optical retardation, the order of interference could be determined successfully from the successive assembly of phase shift versus filament diameter correlations collected at different measuring positions along the spinning and drawing lines. Analyzed birefringence increased steeply in the vicinity of neck-like deformation in the high-speed spinning line or in the vicinity of necking deformations in the in-line drawing line. It was verified that the thinning in the in-line drawing line is more effective for the development of molecular orientation in comparison with that in the high speed spinning line. Analysis on the time-course variations of diameter and birefringence in the vicinity of neck-like deformation caused by the fluctuation of its position along the spinning line was conducted to obtain detailed orientation development behavior. This analysis confirmed that the local birefringence is governed solely by the local diameter (or velocity) in the high-speed spinning line. On the other hand, it was relatively difficult to analyze the time-course variation of birefringence near the necking deformation in the in-line drawing line because of an overlapping of unique short-period diameter fluctuation of around 125 Hz, which corresponds to several tens of centimeters along the filament, occurring during the necking deformation. Such diameter fluctuation moves toward downstream at the speed of running filament, and therefore was speculated to be originated from the intrinsic characteristics of fiber materials.
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© 2009, Carl Hanser Verlag, Munich
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
- Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
- An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
- Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
- In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
- Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
- Study on Kneading and Molding of PP/TiO2 Nanocomposite
- Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
- On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
- Micro Replication by Injection-Compression Molding
- Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
Artikel in diesem Heft
- Contents
- Contents
- Regular Contributed Articles
- Investigation of the Thickening Efficiency of HEUR on the Behavior of Two Different Latex Types
- Optimization of the Thickness of PET Bottles during Stretch Blow Molding by Using a Mesh-free (Numerical) Method
- An Experimental Setup to Measure the Transient Temperature Profiles in Water Assisted Injection Molding
- Experimental Investigation and Flow Modeling of Slippage Induced by Additives in Polyolefins in a Modular Co-rotating Twin Screw Extruder
- In-mold Melt Front Rate Control Using a Capacitive Transducer in Injection Molding
- Structural and Rheological Properties as a Function of Mixing Energy for Polymer/Layered Silicate Nanocomposites
- Study on Kneading and Molding of PP/TiO2 Nanocomposite
- Sustainable Biocomposites from Rice Flour and Sisal Fiber: Effect of Fiber Loading, Length and Alkali Treatment
- On-line Measurement Studies on Orientation Development and Characteristic Short-Period Diameter Fluctuation in High Speed In-line Drawing of Poly(ethylene terephthalate) Fiber
- Micro Replication by Injection-Compression Molding
- Utilizing Processing Parameters for Evaluating Polymer Viscosity during Plastication in Injection Molding
- PPS-News
- PPS News
- Seikei Kakou Abstracts
- Seikei-Kakou Abstracts
