Journal of the Textile Machinery Society of Japan
Online ISSN : 1881-1159
Print ISSN : 0040-5043
Volume 6, Issue 2
Displaying 1-9 of 9 articles from this issue
  • Kiyohisa Fujino, Wajuro Itani
    1960 Volume 6 Issue 2 Pages 1-12
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
    This is a report on a theoretical and empirical analysis of the effects which fiber orientation of slivers have on fiber motions in the drafting zone. It assumes that each fiber in an ideal sliver has equal fiber orientation and a velocity change point in the drafting zone.
    The authors formulated some functions on an ideal sliver to express the relations among the average floating velocity, the average position of velocity change points, the degree of fiber orientation and the quantity of floating fibers; and the relations among the sectional average floating velocities, the distribution of velocity change points, the degree of fiber orientation and the distribution of floating fibers.
    Applying these functional relations to measured floating curves on actual slivers, the authors analyzed the effects of fiber orientation on the behavior of floating fibers in the drafting zone.
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  • Hideo Noshi, Teruo Ishida, Masanosuke Shimada
    1960 Volume 6 Issue 2 Pages 13-21
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
    The object of this study is to discover the most effective law of blending and the maximum limitation on the mechanical strength of a blended yarn or cord composed of two kinds of continuous filaments.
    In the case of tensile rupture, the fibers making up a blended yarn resist the rupture most effectively if the mixing rate of the fibers of low extensibility is under 25% and the twist on the blended yarns is more than half the permissible maximum twist.
    In the case of flexing fatigue, an ideal blended cord is obtainable if the parameter of S-N diagrams and the mechanical model of the constituent fibers of the blended cord satisfy equation (27).
    The tensile strength or fatigue life of even the most effective blended yarn or cord is less than that of the mathematical mean of the constituent fibers. The amount of work (the degree of toughness) needed for the tensile rupture of the yarn or cord exceeds the mathematical mean of the constituent fibers.
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  • Kiyohisa Fujino, Hiroshi Ohnaru, Tsuneo Horino, Hiromichi Kawai
    1960 Volume 6 Issue 2 Pages 22-27
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
    It is common knowledge that spun yarns as well as twisted filament yarns show considerably non-linear vibration chracteristics, which seem traceable to intersurface friction between fibers constituting the yarns. In this paper the non-linear vibration characteristics are represented in terms of a degenerated visco-plasto-elasticity, taking into account of a continuous distribution of Coulomb's friction. The influence of finishing oils upon the continuous distribution of Coulomb's friction and the reduced complex dynamic compliance are also discussed.
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  • Shozaburo Yamaguchi, Ko Oyanagi
    1960 Volume 6 Issue 2 Pages 28-34
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
    We seek to inquire experimentally into the mechanical properties of the single filaments of Kanekalon, a vinyl chloride-acrylonitrile copolymer fiber, at temperatures ranging from 10° to 90°C and humidities ranging from 30% to 90% R. H., and to compare these properties with the similar properties of the fibers dealt with in onr previous reports. [1_??_3]
    The tensile properties of Kanekalon are also quantitatively represented by the seven tensile characteristics values-the first modulus of elasticity, yield point, yield elongation, elongation of the yielding part, secondary modulus of elasticity, elongation and tensile strength-used in our previous reports. [1_??_3]
    The behaviors of creep and recovery from creep in Kanekalon nearly follow the general formulas of creep and recovery from creep given in the previous reports. [1_??_3]
    Kanekalon is somewhat similar in their mechanical properties to terylene, but is poorer in tensile strength and rate of recovery from tensile elongation. Kanekalon is larger in the amount of relaxative elongation than terylene but shows a much lower rate of recovery from relaxative elongation.
    The effect of temperature upon the mechanical properties of Kanekalon is as remarkable as on terylene. The effect of humidity upon the mechanical properties of Kanekalon, though slight, is slightly larger than on the similar properties of terylene.
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  • Michio Kato, Kiichiro Sakaoku, Kokichi Yoshida
    1960 Volume 6 Issue 2 Pages 35-44
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
    The authors have made researches in quest of methods to measure the bulkiness of tufts emerging from opening and picking machinery and devised three methods (by “the bulkiness of the tuft” we mean “the degree of opening”):
    (1) A method which measures the bulkiness of a tuft from the degree of compression of the tuft and the degree of the tuft's recovery from compression.
    (2) A method which measures the bulkiness of a tuft from the degree of deformation of the tuft by compression.
    (3) A method which measures the bulkieess of a tuft from its specific volume.
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  • Kiichiro Sakaoku, Sadao Asao
    1960 Volume 6 Issue 2 Pages 45-50
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
    The experiment described in the following article has been made with a three-fold object: (1) to produce by thermo-setting a coiled mono-and a coiled multi-filament shaped polygonal or circular in the cross section, (2) to express quantitatively the degree of thermo-setting needed for that purpose and (3) to determine an optimum condition for the thermo-setting of such a mono- and multi-filament. The authors used saran, nylon 6, and terylene in their experiments.
    These experiments have shown that:
    (1) Even a slight difference in the degree of thermo-setting can be detected if we differentiate between the apparent and real degrees of thermo-setting and express the real degree by PL, PN and PD.
    (2) Mono- and multi-filaments set in a coild shape having a polygonal or circular cross section will have a fabric hand and cushion effect which will suit them for manufacture into textiles for certain purposes, including thermal insulation and filtering.
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  • Tatsuhiko Hattori
    1960 Volume 6 Issue 2 Pages 51-54
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
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  • Kagetami Kawasaki, Natsuo Fukunaga, Riichi Kurumizawa
    1960 Volume 6 Issue 2 Pages 55-58
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
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  • Shigeo Ogawa
    1960 Volume 6 Issue 2 Pages 59-62
    Published: 1960
    Released on J-STAGE: July 08, 2008
    JOURNAL FREE ACCESS
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