Cool Touch Feeling Property and Air Permeability of Textiles with Different Surface Properties on Front and Back

We wove textiles with different surface properties on the front and back sides of a twill weave and a satin weave using a needle loom with a Jacquard shedding mechanism. The textiles were evaluated to glossiness, to qmax, and to air permeability. Based on the results, we discussed to the mechanism by which the difference between the front and back surfaces of the textiles. The textiles, both twill and satin weave, showed markedly different glossiness Gs(60) on the front and back surfaces, confirming that the weaving of textiles with different surface properties on the front and back surfaces was possible. The qmax, which indicates cool touch feeling property, were higher on the front side than on the back side for both the twill and satin weave. The reason for we considered to be that the surface of the textiles with less unevenness had a larger contact area between the heat source plate and the textiles surface during the measurement. The amount of air Vair that passed through the textiles, which indicates air permeability, were higher when the back surface was used as the air inlet surface than when the front surface was used as the air inlet surface for both twill and satin weave. A simple cross-sectional morphology model was presented to investigate this factor, and we considered that the airflow from the front side has a component that flows toward the front side, whereas the airflow from the back-side flows through a funnel-shaped area, resulting in higher air permeability than the airflow from the front side. These results indicate the possibility of controlling cool touch feeling property and air permeability by using textiles with different surface properties on the front and back sides.