Thinning Behavior of the Spinline in High-Speed Bicomponent Spinning of High Molecular Weight and Low Molecular Weight Poly(ethylene terephthalate).

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  • Radhakrishnan J.
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Kikutani Takeshi
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology
  • Okui Norimasa
    Department of Organic and Polymeric Materials, Tokyo Institute of Technology

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  • Thinning Behavior of the Spinline in Hi

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Description

The high-speed spinning of sheath/core type bicomponent fibers consisting of high molecular weight poly(ethylene terephthalate) (HMPET) and low molecular weight poly(ethylene terephthalate) (LMPET) was performed and the thinning behavior of the spinline was investigated. At lower speeds, the on-line measurement of the spinline diameter revealed that the diameter profile of the bicomponent spinning lies in between those of the HMPET and LMPET single component spinnings. At higher speeds, a neck-like doformation was also found to occur in the bicomponent spinnings. The position of the neck-like deformation was closer to the spinneret in comparison with both the single component spinnings. Although the necklike deformation occurred in the bicomponent spinning, the LMPET component in the bicomponent fiber showed low oriented and low crystalline structure.

Journal

  • Sen'i Gakkaishi

    Sen'i Gakkaishi 52 (11), 618-622, 1996

    The Society of Fiber Science and Technology, Japan

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