Sen'i Kikai Gakkaishi (Journal of the Textile Machinery Society of Japan)
Online ISSN : 1880-1994
Print ISSN : 0371-0580
ISSN-L : 0371-0580
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Volume 49, Issue 2
Displaying 1-7 of 7 articles from this issue
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  • Change in Supermolecular Structure of Nylon 66 Fiber with Time Elapsed
    Michitaka Iwata, Hiroyuki Makino, Kenji Kamide, Sei-ichi Manabe
    1996 Volume 49 Issue 2 Pages T29-T35
    Published: February 25, 1996
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.49.T29
    JOURNAL FREE ACCESS
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    An attempt was made to inves tigate the change in supermblecular structre of nylon 66 fiber with elapse time. A nylon 66 fiber was kept in the room controlled isothermally or in the room without the control under free of tension for about 1000 days.
    The change in supermolecular structure of the fiber was evaluated by wide angle X-ray diffraction, interference microscopy and dynamic viscoelastic properties. With an increase in elapse time, the perfection of crystal increased, and the crystal orientation decreased. In the amorphous region, molecular chains were strained, and relaxed at a later time. Moreover at 900 days later, the domain, in which the molecular chains were densely packed, war in the amorphous region. these tendencies were more emphasised in the cose of leaving in to room with out themal control.
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  • Material Design and Performance Evaluation of Porous Sintered Metal Ring for Spinnig Frame
    Part 2 : Abrasive Resistance
    Hiroaki Kanai, Kiyohide Yagyu, Akira Maruta, Masaru Nakazawa, Takashi ...
    1996 Volume 49 Issue 2 Pages T36-T48
    Published: February 25, 1996
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.49.T36
    JOURNAL FREE ACCESS
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    In this report, a study was made on the influence which the compound ratio of sintering annexes MOS2 and FeMn contained in porous sintered metal has on the characteristics of wear resistance of iron-based porous sintered metal ring, with a view to improving the wear resistance characteristics of spinnig ring.First, we specified 5 different kinds of compound ratio and conducted abrasion tests to check the relationship among compound ratio, amount of wear, surface roughness and gas permeability of ring.According to test results, the best characteristics of waer resistance were obtained when the compound ratio of MoS2in the sintering annexes was 60∼67%.Next, this newly developed ring (66.7% MoS2, 33.3% FeMn) and conventional standard ring (100% MoS2) were submitted to actual load operation and the changes of amount of wear, gas permeability and surface roughness of both rings against the operating time were measured and compared with each other. From the results of this experiment, it has been found that the former is superior to the latter in wear resistance characteristics and that this superioirty comes from the fact that the pores of the newly developed ring are shaped in way to better lubricate the ring surface.
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  • Effect of Composition and Structure of Coating Polymers on Moisture Transporting Properties in Waterproof/Moisture-permeable Fabrics Prepared by Wet-Coagulation Process
    Masao Enomoto, Kazuaki Suehiro, Tsunehiro Tanaka, Yoshiaki Kiso
    1996 Volume 49 Issue 2 Pages T49-T55
    Published: February 25, 1996
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.49.T49
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    Waterproof/moisture-permeable nylon fabrics were prepared by wet-coagulation process using blend of polyester type polyurethane (PU) /polyvinyl chloride (PVC) resins in various ratios, and their structures of crosssection as well as their water transporting properties were investigated.
    The fabrics were found to consist of three layers : (1) Inner surface which comes into contact with wearer's skin has hydrophobic micro-networks resulting from gradient concentration of PVC. (2) Intermediate porous layer is rich in PU which is rather hydrophilic compared with PVC and useful for moisture transportation. (3) Outer surface is composed of hydrophobic nylon fabric.
    Dewing values, which have a correlation with water transporting properties, were found to decrease with increasing PVC/PU ratio.This fact suggests possibility of developing more comfortable fabrics suitable for sportswear, etc.
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  • Recent Development of Biomedical Fibers
    Y. Ikada
    1996 Volume 49 Issue 2 Pages P95-P99
    Published: February 25, 1996
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.49.P95
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  • Memblene for Blood Purification
    M. Yamashita
    1996 Volume 49 Issue 2 Pages P100-P106
    Published: February 25, 1996
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.49.P100
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  • [title in Japanese]
    K. Hiramatsu
    1996 Volume 49 Issue 2 Pages P107-P110
    Published: February 25, 1996
    Released on J-STAGE: October 27, 2009
    DOIhttps://doi.org/10.4188/transjtmsj.49.P107
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  • Application to the Medical Device Using Bioabsorbable Polymers
    H. Takasawa
    1996 Volume 49 Issue 2 Pages P111-P121
    Published: February 25, 1996
    Released on J-STAGE: February 12, 2010
    DOIhttps://doi.org/10.4188/transjtmsj.49.P111
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