ディスク型フリクション仮撚における糸の走行経路 (第1報)ディスク上を走行する糸の経路と張力の解析 Yarn Path in Friction False Twisting Part 1 : Analysis of Yarn Path and Tension on Twisting Disk

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Although the false-twisting by means of a friction disk unit is an efficient technique widely applied to manufacture the synthetic fiber yarns conventionally called `textured yarns', the fundamental mechanics operating in the processing, especially the relationship between frictional and extensional forces and paths which a yarn experiences when twisted, is not sufficiently in vestigated to date. This series of reports aims to establish a theory that describes the mechanical behaviors of a yarn in the false-twisting process using a friction disk unit, and to obtain basic information about the yarn path and the frictional forces acting on the yarn . In the theoretical part of this article, the forces balance equations, which determined a yarn path contacting with the toric surface of a single false-twisting-disk unit, were developed on the basis of differential geometry of curved surfaces. In the experimental part, the path shape of a yarn contacting with the toric surface of twisting disk was photographed and simultaneously the yarn tension was measured under several combinations of processing conditions : the yarn entrance direction and feed velocity, the rotational speed of the twisting disk, etc.The data obtained coincided fairly with analytical estimations and the presented scheme was confirmed to be valid for predicting the behaviors of a yarn in the false-twisting processing using a friction disk unit .

Although the false-twisting by means of a friction disk unit is an efficient technique widely applied to manufacture the synthetic fiber yarns conventionally called `textured yarns', the fundamental mechanics operating in the processing, especially the relationship between frictional and extensional forces and paths which a yarn experiences when twisted, is not sufficiently in vestigated to date. This series of reports aims to establish a theory that describes the mechanical behaviors of a yarn in the false-twisting process using a friction disk unit, and to obtain basic information about the yarn path and the frictional forces acting on the yarn . In the theoretical part of this article, the forces balance equations, which determined a yarn path contacting with the toric surface of a single false-twisting-disk unit, were developed on the basis of differential geometry of curved surfaces. In the experimental part, the path shape of a yarn contacting with the toric surface of twisting disk was photographed and simultaneously the yarn tension was measured under several combinations of processing conditions : the yarn entrance direction and feed velocity, the rotational speed of the twisting disk, etc.The data obtained coincided fairly with analytical estimations and the presented scheme was confirmed to be valid for predicting the behaviors of a yarn in the false-twisting processing using a friction disk unit .

収録刊行物

  • 繊維機械学会誌 = Journal of the Textile Machinery Society of Japan  

    繊維機械学会誌 = Journal of the Textile Machinery Society of Japan 52(10), T217-T224, 1999-10 

    繊維機械学会 = Textile Machinery Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002863830
  • NII書誌ID(NCID)
    AN00285892
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03710580
  • NDL 記事登録ID
    4897887
  • NDL 雑誌分類
    ZP33(科学技術--繊維工学・工業)
  • NDL 請求記号
    Z17-196
  • データ提供元
    CJP書誌  NDL  IR  J-STAGE 
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