JOURNAL of the JAPAN RESEARCH ASSOCIATION for TEXTILE END-USES
Online ISSN : 1884-6599
Print ISSN : 0037-2072
ISSN-L : 0037-2072
Volume 54 , Issue 12
Showing 1-19 articles out of 19 articles from the selected issue
  • Mamiko YATAGAI
    2013 Volume 54 Issue 12 Pages 1066-1074
    Published: December 20, 2013
    Released: September 14, 2017
    JOURNALS OPEN ACCESS

    Clothing microclimate was compared by measuring temperature and humidity on the inside of brassiere (and breast form) on four female subjects who had undergone breast cancer surgery (mastectomy or lumpectomy). The temperature was higher at the diseased side than at the healthy side irrespective of the type of surgery. The humidity was higher at the diseased side in the post-mastectomy subjects, whereas, slightly lower at the diseased side in the post-lumpectomy subjects. Remarkably high temperature and humidity were observed on the inside of silicone breast form worn by the post-mastectomy subjects. Therefore, clothing microclimate was compared on three types of silicone breast forms with different material, structure and shape. The temperature and humidity measured on the inside of breast form were lower when wearing the improved products with built-in temperature equalizing layer and/or three dimensional surface on the back than when wearing the conventional product. The results indicate that improving breast forms could reduce thermal discomfort of the wearer.

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  • Yuki KOHAMA
    2013 Volume 54 Issue 12 Pages 1075-1082
    Published: December 20, 2013
    Released: September 14, 2017
    JOURNALS OPEN ACCESS

    The color of cloth, thread or Japanese paper which was dyed with natural dyes, natural pigments or synthetic dyes by the dyers or the tinters in Japan was measured using a spectrophotometric colorimeter. The color characteristic of natural dyes has been considered from the measured L*a*b* values (CIELAB) Natural dyes can develop the vivid yellow and the vivid red and the chroma of the turmeric, the pagoda tree, the amur corktree, the goldthread, the onion, the safflower, the cochineal and the lac was high specifically. On the one hand, natural dyes cannot develop vivid purple, vivid bluish green and dull green with the low brightness. The fiber which was dyed with natural inorganic pigments such as the ultramarine and the patina included the color which can't dye with the natural dyes. However, it was possible to distinguish from the dyestuff by the use of microscopic observation (×200). The color which can be dyed with natural dye and the color which can be dyed only with synthetic dye were made clear. The color which can't dye with natural colorant was in the cloth which showed a traditional color before the Edo period.

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