Journal of the Textile Machinery Society of Japan
Online ISSN : 1881-1159
Print ISSN : 0040-5043
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Volume 11, Issue 4
Displaying 1-2 of 2 articles from this issue
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  • Some Uses for Fiber Tuft Method
    Koichi Nakagawa, Ippo Nagashima
    1965 Volume 11 Issue 4 Pages 125-132
    Published: 1965
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.11.125
    JOURNAL FREE ACCESS
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    Purpose The structure of fiber tufts made by nipping a sliver composed of staples of an equal length has been analyzed with the following results:
    (1) The fiber distribution in a sliver can be practically evaluated by using the value of V{(WF; -WR; )/√<WF; +WR; >} where Wr; : weight of the front tuft WR; : weight of the rear tuft V: the variance
    (2) The degree of fiber hooking in a sliver can be accurately measured by E{(WF; -WR; )/(WF; +WR; )} where E: the mean
    (3) The short fiber content R in a staple diagram has a close correlation to RI; and RII; obtained by the fiber tuft method, as shown in the formulas R=12RI; /(3+4RI; ), R=3Rno-issue=869-870II;
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  • New Optical Method of Measuring the Hairiness of Yarn
    Part 1: The Principle and Equipment
    M. Kubota, S. Nishizawa, T. Hiramatsu
    1965 Volume 11 Issue 4 Pages 133-139
    Published: 1965
    Released on J-STAGE: October 24, 2006
    DOIhttps://doi.org/10.4188/jte1955.11.133
    JOURNAL FREE ACCESS
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    (1) The principle is to project the hairs of a running yarn on a screen vertical to the yarn axis and measure their value photometrically. Circular slits used on the screen measure the quantity and the length of hairs very easily and accurately.
    (2) Measuring equipment has been built and some factors bearing on measured results have been looked into. This equipment can pick up each 1-mm-long hair fully.
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