Shape factors of a tight skirt and 3 kinds of flared skirts were investigated precisely. Shape factors of circular fabrics were calculated from mechanical parameters obtained by KES system, however, those of skirts were obtained experimentally. Those results were compared with drape parameters of circular fabrics such as node number (n), static (D_s) and dynamic drape coefficients as revolving drape increase coefficient (D_r), saturated drape coefficient (D₂₀₀) and turning-around drape coefficient (D_d). They were also compared with node number and static drape coefficient of skits at hem line. Following conclusions were obtained. In the case of tight skirt, flare-1 skirt and flare-2 skirt, the shape factor showed high correlation with drape parameters of the skirts and circular fabrics. The shape factor of skirts has high positive correlation with node number and negative correlation with static drape coefficient of circular fabrics. In the case of flare-3 skirt, there is no correlation between the shape factor and the drape parameters of circular fabrics and skirts, hence shape factor becomes an important parameter which can evaluate the appearance of flared skirt objectively.

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This research is aimed at developing a computer aided design system for a traditional tie-dyeing craft named "Shibori". These products of folk crafts are made with the manual labors and their processes are divided into a lot of practiced hand works. In addition their manufacturing processes are dispersed to different regions. So the practiced hand works of the "Drawing / Pattern carving Shibori" process decrease in number. Producing Shibori products may become difficult because anyone cannot plan the Shibori products in the future. If the "Drawing / Pattern carving Shibori" process is simplified by computerizing, we can record the Shibori technology and can also design Shibori products easily. In this report, therefore, we developed both a CAD system for “Drawing” process in order to simplify its process and keep skilled hands of Shibori products, and a CAM system for “Pattern carving Shibori” process using CAD data. This CAD system is useful for “Mokume-Shibori” to make their stitch images by means of its small scale modification. This report also provides an overview of a CAD system for “Mokume-Shibori” to make their stitch images and a CAM system to make its trial fabric.

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