[in Japanese]

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Thickness changes in wool Futon padding during repeated compression were investigated with laboratory compression tests. The cyclic compression test was performed on the basis of the reduction in thickness of wool model Futon after 51 days of use. The cyclic compression test with wet paper was estimated to be useful for selection of easily compressible Futon samples. Pure polyester and polyester/wool blend Futons show less reduction in thickness compared with wool Futons. Pure cotton Futon shows large recovery of thickness after compression under the conditions 20°C, 65%RH. There was less reduction in thickness after the compression test for wool Futon padding with a high value of fiber shear modulus (GL) than those with a rather low value of GL. Wool Futon padding consisting of coarse and crimpy fibers show less reduction in thickness compared to those made from fine and uncrimpy fibers. The rigidity for compression of wool fiber assembly is also related to the reduction of thickness for wool Futon padding.

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For the basic study of automatic pattern making by draping, the method of making body unit models and preparing clothing patterns was examined using three dimensional and visual-image data of the form of male and female body units from a CCD camera. The form of the body units was measured by a range finder of coding pattern light. These processes of preparing basic patterns were as follows : noise reductions of three dimensional data of the body units by median filter, extracting 18 main and 198 constructive points of the pattern, and expressing a threedimensional body model and pattern making by surface development considering the shear characteristics of the fabrics. As a result, it was confirmed that a pattern can be prepared by our technique, even if there is a big difference between the forms of male and female body units. Interactive processing was used because the main points of the pattern were difficult to identify using automatic computer processing.

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