Compressive Properties of Pantyhose Fabric

Abstract

To clarify differences in the compressive properties of different kinds of pantyhose fabrics on the market in Japan, cylinder-elongation experiments and wear experiments are conducted, with Zokki, kohhen, sheer, wooly, and conjugate kinds of pantyhose are used as samples. Their compressive properties, which include compressive energy, compressive resilience, and fabric thickness, differ remarkably according to the types and the sites of hose and posture while being worn.We have been making fundamental studies of the touch of pantyhose that even women susceptible to dermatological hazards can comfortably wear, and this study is one of them. In previous papers, we clarified differences in touch between pantyhose with different yarn structures [4], and also studied differences in the morphology of fabric surfaces of pantyhose in real contact with a rigid plate in order to research the cause of hand differences in touch [5].We can postulate that the compressive properties of pantyhose are also very important factors related to touch. In general, pantyhose have high elongation properties, but the compressive properties must substantially change according to the grade of elongation. For example, when women with big or thicker legs wear pantyhose, the grade of their elongation becomes higher, and the pantyhose fabrics then have harder compressive properties. But when women with small or thin legs wear them, the grade becomes lower and the fabrics softer. These changes will also be affected by the sites of hose or posture when standing, sedentary, and &dquo;seiza,&dquo; a special Japanese posture. Harder compressive properties of fabrics cause inferior touch and possibly skin irritation, so it is necessary to study the compressive properties of pantyhose with simple elongation and with wear.There are five kinds of typical pantyhose on the market in Japan, i.e., zokki, kohhen, sheer, wooly, and conjugate. As we reported in the previous paper [4], there are differences in their touch, and because their yarns have different structures, their compressive properties also differ.This study assesses the compressive properties (energy and resilience) and the fabric thickness of swatches taken first from pantyhose held at three different extensions , on cylinders, and second from pantyhose on a human subject as she pauses after standing, walking, and sedentary in the Japanese posture. The swatches in the former used in the cylinder-elongation experiments and those in the latter for the wear experiments are described below. In this study, cylinder-elongation experiments determine the basic compressive properties of pantyhose by simple elongation using cylinders, and wear experiments provide practical data during wear. These data can then be used in conjunction with subjective touch data collected in another experiment with a view to understanding the nature of the relationship between perceived touch and pantyhose characteristics.We could not find any published studies on the compressive properties of pantyhose, although there are...

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