繊維学会誌
Online ISSN : 1884-2259
Print ISSN : 0037-9875
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68 巻, 1 号
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  • 双糸の非接触上撚り測定方法の開発
    古金谷 圭三, 雪下 陽一, 藤崎 浩孝, 神徳 泰孝, 奥野 紘規, 藤垣 元治
    2012 年 68 巻 1 号 p. 6-10
    発行日: 2012/01/10
    公開日: 2012/02/10
    DOIhttps://doi.org/10.2115/fiber.68.6
    ジャーナル フリー
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    The twist of yarn is one of its important properties. The amount of twist inserted in a yarn is a factor on which are dependent, not only tensile strength, but also a number of properties which contribute to yarn quality. The common method for testing final twist, an attribute of double-ply yarn generally used with flat knitting machines, consists of untwisting the yarn. We propose a method for extracting an outer profile from an image of yarn which is scanned by running the yarn in front of a CCD camera. The number of peaks in the outer profile is related to the number of final twists in the yarn. The number of final twists can be estimated by calculating their frequency in the outer profile using FFT. This paper shows the results of this new method, compared with those of the ordinary method of untwisting yarn.
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  • 黒鉛粉末プリント加工による発熱織物の開発
    恩田 紘樹, 山田 徹郎, 須見 将太, 野口 善朗, 鈴木 豊, 河原 豊
    2012 年 68 巻 1 号 p. 11-13
    発行日: 2012/01/10
    公開日: 2012/02/10
    DOIhttps://doi.org/10.2115/fiber.68.11
    ジャーナル フリー
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    Flexible heating elements have been developed by printing graphite powder on the fabrics using commercial binders. Tensile properties for the fabric were almost unchanged when the treatment was applied to the fabric made of nylon or polyester filament yarns. On the one hand the cotton fabric lowered its flexibility. The surface temperature of the heating element made of polyester could be raised over than 40 oC from room temperature. Polyester fabric seems to be one of the most suitable materials for producing flexible heating elements.
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  • ブリーチ毛髪に対する毛髪由来ペプチドの処理効果
    鷲家 真吾, 吉井 昇, 福田 清佳, 西山 頌子, 梅本 さやか, 浅野 泰久, 亀井 加恵子, 河原 豊
    2012 年 68 巻 1 号 p. 14-17
    発行日: 2012/01/10
    公開日: 2012/02/10
    DOIhttps://doi.org/10.2115/fiber.68.14
    ジャーナル フリー
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    Two types of peptide fractions were extracted from the human hairs and the properties for the fractions were investigated. The molecular weight of A fractions was 11 kDa, and that of B fractions 9.7 kDa. Artificially damaged human hairs were prepared by repeating the bleach treatments, and the recoveries in physical properties for the damaged hairs were estimated by impregnating those extracted peptide fractions. When the A fractions were impregnated into the damaged hairs, the formation of permanent waves was slightly recovered. As for the B fractions the tensile strengths for the damaged hairs were regained to some extent.
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