Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan)
Online ISSN : 1880-1994
Print ISSN : 0371-0580
ISSN-L : 0371-0580
Volume 30, Issue 11
Displaying 1-7 of 7 articles from this issue
  • Part 2 : Some Considerations on Entrance Shape of the Device to Obtain Better Retrieving Effect
    Tsuneo Hirai, Tsutao Katayama, Toyoki Tanaka, Naomichi Heya, Sadasuke ...
    1977 Volume 30 Issue 11 Pages T189-T196
    Published: November 25, 1977
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    In textile processes, it should be very important problem to develop an effective and economical retrieving method of yarn by using air suction.
    In this paper, the effective boundary condition of an air flow on such action, especially an entrance guide shape of an air inlet is investigated to determine the optimum condition of such operation.
    In order to obtain the influence of flow pattern using the conical air guide on the retrieving effect, the several different types of guide with various conical angle are tested.
    The experimental results on the pressure distribution along the bobbin axis suggest the flow pattern in the axisymmetrical canal between the bobbin and its adapted hood and those effect on the retrieving are analyzed on the basis of the concept obtained in the previous paper.
    An analysis has shown that the entrance with 0°or 90° conical angle; the hood provided with skirt parallel to the bobbin axis or circular plate perpendicular to the bobbin axis is effective. The selection of a hood shape depends upon the space of the installation place.
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  • Part 1 : Jet Expansion and Yarn Tension
    Tsuneyoshi Ohkouchi
    1977 Volume 30 Issue 11 Pages T197-T204
    Published: November 25, 1977
    Released on J-STAGE: February 12, 2010
    JOURNAL FREE ACCESS
    Jet expansion on water jet looms can be defined by the jet cone angle 2θ, on which the jet velocity at any distance from the nozzle depends.
    Several methods for measuring the jet velocity have been developed, among which the periodic jet cutting method has been found to be accurate and usefull.
    Yarn tension caused by water jet has also been studied. It is shown that the yarn tension is dependent on many factors, e. g., jet velocity, yarn velocity, jet radius and 2θ, and mainly on the jet near the nozzle.
    The method of determination of yarn constant has also been studied.
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  • M. Umezawa, T. Inoshita
    1977 Volume 30 Issue 11 Pages P458-P461
    Published: November 25, 1977
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    Download PDF (522K)
  • Meiji Anahara
    1977 Volume 30 Issue 11 Pages P462-P468
    Published: November 25, 1977
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    Some kinds of spun-like yams developed by the method of spreading or dividing a multi-filament yarn into individual filaments and mixing a multi-filament yarn with other components are introduced. For these methods a specially designed electrode and an air jet interlacing nozzle are suitably applicable respectively.
    A representative example developed by these methods is so-called heather yarn in which two cross-dyeable or different coloured multifilament yarns are entangled each other. The fabric appearance varies widely according to the entangle level of used heather yarn and pep-per-and-salt effect is attained by 70% cluster-mixing grade.
    “Manerd”, a kind of comosite yarn comosed of a synthetic multi-filament yarn and natural fibers is another example . In this yarn, natural fibers are so well intermingled with multi-filament yarn that are superior in durability against abrasion on post treatment and wear comparing to the regular core yarn. The yarn property is varied by their ratio and 60%70% of natural fibers is selected from both physical faculty and comfortability in “Manerd”
    A novelty yarn which is covered by filament loops and is uneven in thickness can be also produced by these methods. In this process the genuine twists are gained from the false-twist mechanism.
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  • K. Shibata
    1977 Volume 30 Issue 11 Pages P469-P473
    Published: November 25, 1977
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
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  • Yoshinori Onoda, Motoji Taniguchi, Hisakazu Ikui, Takatsugu Nakamoto
    1977 Volume 30 Issue 11 Pages P474-P482
    Published: November 25, 1977
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    Some properties of our newly developed spun-like nylon yarn and fabrics called“Trim”were evaluated and compared with those of conventional false twist yarns spun yarns and so on.
    It was proved that“Trim”could keep suitable roughness, irregu-larity and bulkiness even when stretched, which are essentially needed for spun-like yarns.
    Further more features, physical and functional properties of some fabrics were tested. In the evaluation of physical properties, spun-like yarn was defined to have small deviations in results of tests on 14 physical proper ties authorized in KES-F system compared with polyester cotton blended broad cloth and knitted fabrics of cotton.
    It was found that“Trim”fabrics had antiglaze surface and high bulkiness, and that the deviations described above were very small. Consequently, “Trim”fabrics were more improved in its functional properties such as insulation and moisture absorption than the fabrics of conventional synthetic fibers.
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  • Shogo Mizuno
    1977 Volume 30 Issue 11 Pages P483-P489
    Published: November 25, 1977
    Released on J-STAGE: October 27, 2009
    JOURNAL FREE ACCESS
    Download PDF (978K)
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