Journal of the Textile Machinery Society of Japan
Online ISSN : 1881-1159
Print ISSN : 0040-5043
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Volume 23, Issue 1
Displaying 1-3 of 3 articles from this issue
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  • Simulation of Fiber Transfer between Carding Rollers Running near the Critical Surface Velocity
    Kazuhisa Harakawa, Shuichi Kinoshita, Kenji Tanaka
    1977 Volume 23 Issue 1 Pages 1-7
    Published: 1977
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.23.1
    JOURNAL FREE ACCESS
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    A new fiber transfer model is presented under the assumption that the fiber transfer phenomenon is due to the combination of fiber gripping and fiber distributing. It also includes a geometrical definition of fiber gripping to predict the Kv; -P/Ps; relation.
    This new model is explained theoretically and experimentally. Then the fact that the collecting power is decreased by putting a small roller in the carding zone is evaluated quantitatively.
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  • Region of Frictional Slip of Spun Yarns and its Application
    Kazuhisa Harakawa, Nariaki Oikawa, Shigeki Takagi, Kenji Tanaka
    1977 Volume 23 Issue 1 Pages 8-14
    Published: 1977
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.23.8
    JOURNAL FREE ACCESS
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  • Structure of High Stretch Yarns and Their Tensile Properties
    Seinosuke Kakiage, Tetsuyuki Sasai
    1977 Volume 23 Issue 1 Pages 15-20
    Published: 1977
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.23.15
    JOURNAL FREE ACCESS
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    To clarify the structure of high stretch yarns in helical coils, various photographs of them and of other textured yarns or models are taken, and the relation between their tensile properties and the structure is studied. Results obtained are:
    1. Hard-twist two-ply yarns are studied as a model having two first twists per one pitch. They have hollow parts in the center of the yarn, and the radius can be expressed by: a=0.896 2. We have explained the configuration of the crimps or loops of the constituent filaments when hard-twist two-ply yarns are twisted, heat-set and untwisted. 3. We have found that the tensile properties of high stretch yarns are dependent on the configuration of the constituent filaments and on the complexity of assembly of these filaments, and that the fundamental shape of crimps of the yarn consists of a series of rings which develop the high extension property.
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