The purpose of this study is to evaluate the material properties of the knitted fabric with polypropylene (PP) blended yarn. The material properties were measured by Kawabata Evaluation System (KES), Japan Industrial Standards (JIS) and BOKEN standards. The functionally effect by blending appeared as specific gravity and water & heat transport property. The radius of yarn became smaller and the number of fiber became greater by blending because the weight of PP was light. Resilience against mechanical deformation became greater by blending. Moisture transport property could be added to PP fabric unless spoiling the characteristic of PP such as low thermal conductivity and hydrophobic by blending of the modified cross-section polyester.

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The purpose of this research is to define the visual appeal of legs with pantyhose and the examination of the evaluation indexes that can be used to develop novel pantyhose with superior aesthetic performance that meets the requirements of Japanese women. A sensory evaluation on the beauty of legs with pantyhose among Japanese females using typical pantyhose was conducted along with a factor analysis of the principal evaluation factors, and the relationships between the aesthetic factors and the physical properties of pantyhose fabric were investigated.The perceived beauty of legs with pantyhose greatly depends on two factors : the desirable surface roughness of pantyhose on bare leg and the appearance of looking like bare leg. The evaluation indexes for the two evaluation factors were defined as follows : the desirable surface roughness of pantyhose on bare leg is evaluated by the following equation : SR_OD =(9.6OD­32.6)W×A+(­-0.5OD+2.5) where OD is the observation distance (1.5 m or 2.5 m), W is the apparent yarn width, and A is the area occupied by one loop. The appearance of looking like bare leg is roughly evaluated by the following equation : BL_OD =(2.2OD+25.7)W×(A_y/A)+(-­0.4OD+2.1) where A_y is the yarn area in one loop. However, additional research is required to optimize the corresponding evaluation index by considering the effects of pantyhose color.

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We evaluated the effect of the weft yarn on the pressure sensing properties of textile sensors on the basis of compression properties of the textile. The sensing load of compression supported by the weft yarns of the textile sensor corresponded to the intercept of the line showing the relationship between the sensing load before cutting the weft yarn and the length in the weft direction of the compression jig with the rectangular compression area. As a result, it was found that the sensing pressure of the textile sensor can be controlled by changing the kind of weft yarn. When the length of the compression jig becomes small, the deformation of weft yarns in the textile sensor has a large influence on the sensing pressure of the textile sensor. In addition, the small value of compression pressure is sensible by using the textile sensor with large length of hollow. This implies that the kind of weft yarn affects the value of sensing pressure.

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