Journal of the Textile Machinery Society of Japan

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The behavior of coloring of loop pile carpet has still been unknown. Color evaluation of nylon BCF (Bulked Continuous Filament) loop pile carpet and lateral side of the pile yarn has been investigated by using various kinds of colorimeters where BCF stands for Bulked Continuous Filaments. The main results obtained are shown as follows:
The measuring area should be varied accoding to the aim of color measurement.
The relationship should be clarified between chromaticity coordinates (x, y) and the Y-values of lateral side of yarn and loop pile carpet in order to give the color to loop pile carpet.
The color of a color-mixed loop pile carpet shows the weighted average of chromaticity point of each monochrome or fundamental color. In addition, the Y-value of loop pile carpet shows the average Y-value of each monochrome of loop pile carpet. The colorimetry of bright portion (top of the loop) and dark portion (darker portion between the two tops of loops) has shown the remarkable color difference between bright and dark portion. (ΔE^*ab=30)
The color of the loop pile carpet tends to be more affected by the color of light source with increasing the angle of incidence-reflection.

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A sweating thermal manikin was constructed by collaborative research and development of Government Industrial Research Institute, Osaka and five textile companies to study the relations of heat and moisture transporting properties through clothings. A physical evaluating method of clothing comfort properties was established by using the measurements through the apparatus with sensors. The research and development were performed by Specific Regional Technology Development System of Agency of Industrial Science and Technology. The body was divided into ten segments; front and rear of chest, belly and buttock and limbs, in each segment of which the skin temperature and the amount of sweating can be independently controlled. The amount of sweating is simulated by regulating the air flow to the vapor generator. The climates within the clothes are measured by the thermometers, hygrometers, and heat flux sensors attached on the manikin. The performance of the manikin was evaluated by using shirts, underpears and long underpants made of cotton broadcloth and polyester taffeta.

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