High speed spin-draw fiber

Table 13.3 Draw-resonance ratio measured under specific experimental conditions0 for the three polymers shown in Table 13.1 [13]. From Some effects of the rheological properties of PET on spinning line profile and structure developed in high-speed spinning , Perez, G., in High-Speed Fiber Spinning, Ziabicki, A. and Kawai, H. (Eds), 1985, pp. 333-362, copyright (1985 John Wiley Sons, Inc.). Reprinted by permission of John Wiley Sons, Inc.

Although un-oriented amorphous and semicrystalline polymer fibers are important and they often are the intermediate products of moleculariy oriented fibers, most commercial polymer fibers ate moleculariy oriented, except for a few elastomeric polymer fibers. The molecular orientation in natural polymer fibers occurs by itself under the control of genetic codes. For synthetic polymer fibers, molecular orientation is introduced purposely by high-speed spinning or drawing to enhance the mechanical properties of these fibers so they can be converted into useful final products. 

The process for fiber manufacture has been physically separated or decoupled into two isolated steps, the first for spinning the fiber, operating at a high rate or speed. Then a subsequent slow rate or speed washing and drawing process is done. This process runs rather slow. Therefore a method for the rapid removal of the solvent from the fiber after spiniung has been proposed. 

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