汚染等級判定と色差と粉体汚染物質付着量の関係からみた繊維製品の衛生的防汚性評価方法に関する検討

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  • Evaluation Methods for Soil Resistance and Release of Textiles Regarding Hygiene from the Perspective of Relationship between Soil Grade, Color Difference and Weight of Adhered Soil Particles

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<p>The aim of this study was to verify whether the JIS L 1919 A-1 testing method for soil resistance and release of textiles in soil particles is suitable for hygienical evaluation. The sample consisted of 12 different types, each with four different fiber materials and three different colors. We prepared soiled fabrics using artificially soil particles by JIS L 1919 A-1, and soiled fabrics were evaluated by visual colorimetry using grayscale and color measurement, as well as weight measurement. Then, we examined the relationship between the grade of soil resistance and release, the color difference (ΔE), and the weight of soil particles adhering to the test piece. The results show that there is a significant correlation between the grade of soil resistance and release as measured by visual colorimetry and the color difference (ΔE), which is an aesthetic evaluation index. By contrast, there was no correlation between the grade of soil resistance and release as measured by visual colorimetry and the weight of soil particles adhering to the test piece, which is a hygienical evaluation index. Therefore, it was shown that the hygienical evaluation by existing evaluation methods of visual colorimetry using grayscale has a limited scope of application.</p>

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