繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
71 巻, 7 号
繊維学会誌
選択された号の論文の13件中1~13を表示しています
繊維と工業
時評
特集〈信州大学先鋭領域融合研究群 国際ファイバー工学研究所〉
解説
連載〈業界マイスターに学ぶせんいの基礎講座-10〉
繊維学会創立70周年記念連載〈技術が支えた日本の繊維産業-生産・販売・商品開発の歩み-22〉
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報文
一般報文
  • 村﨑 夕緋, 諸岡 晴美, 篠島 陽子
    2015 年 71 巻 7 号 p. 217-223
    発行日: 2015/07/10
    公開日: 2015/07/10
    ジャーナル フリー
    The purpose of this research was to develop guidelines for designing comfortable girdles with a waist support function, such as reducing the muscle load. We conducted the following experiments: (i) measuring the electrocardiogram (ECG) and electromyogram (EMG) when using low‐elastic spats with high‐elastic tape and (ii) evaluating the effects of three types of trial girdles based on the results of the first experiment. During the first experiment, we developed a taping method for reducing the muscle load and sympathetic activity (psychological stress). During the second experiment, it was found that the girdle types (A, B, and C) are effective at reducing the muscle load. In particular, the Type A girdle, which placed the hard elastic fabric on the back horizontally and surrounding the ilium, provided a less compressive feeling than the others. Finally, we objectively evaluated the emotion through brain wave analysis. The Type A girdle was found to be less irritating than the regular one on the market. The results of this research confirmed that the Type A design provides a comfortable girdle with a waist support function.
  • Kitagawa Tooru, Kiriyama Kohei, Shimizu Yusuke
    2015 年 71 巻 7 号 p. 224-231
    発行日: 2015/07/10
    公開日: 2015/07/10
    ジャーナル フリー
    This article concerns PBO fiber structure, especially a preferential orientation of the a‐axis of the PBO crystal in the fiber. It has been reported that the a‐axis of the PBO crystal aligns parallel to the radial direction on the round cross section for PBO AS and HM fibers. This observation was proved by selected‐area electron diffraction and micro‐focus X‐ray diffraction. An application of water vapor coagulation is carried out in this study. It is proved that the fiber so made shows a random orientation of the PBO crystal a‐axis on the cross section. This fact has never been reported on any scientific or engineering journals before as far as the authors have concerned and it becomes state‐of‐the‐art in this study. A mechanism to explain the presence and/or absence of such preference is proposed. The authors believe that the presence of this radial preferential orientation comes from a combination or a balance of polymer‐solvent interaction and the direction of diffusion for solvent from the center to the outside of the fiber.
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