Classification of characteristics of shingohsen materials by multivariate analysis

Various material characteristics have been studied by extracting latent factors existing in a hidden form in factors of properties of materials. The relationships of the surface shape of materials with material characteristics and shape retention properties of sewn products are determined to pursue hand and appearance of 19 kinds of shingohsen materials, 5 kinds of natural materials and polyester lining materials and rayon lining materials. The surface structure of woven fabrics is classified into 6 types. Most of the shingohsen materials used in the studies resemble the natural materials in hand and appearance. As a result of cluster analysis of all of the materials, they are classified into 5 clusters; however, the scale of the first cluster interpreted as a group having physical properties resembling those of the natural materials is as large as 65.4%. It is revealed that 52.6% of the shingohsen materials used in the studies belong to this cluster. As a result of principal component analysis using 26 variables for the 19 shingohsen materials, it is shown that the surface photographs are positively high in the first principal component. The surface photographs are interpreted as factors related to the whole shape retention properties and the surface photographs become the standards for judging the shape retention properties of the woven fabrics, and that the modification of the surface shape of the woven fabrics is closely related to the shape retention properties of products at the same time. The third and fifth principal components are interpreted as factors related to the shape retention properties with time elapsed from the load of the principal component factor; however, it is shown that the coefficient of friction, stress relaxation and elastic recovery ratio have great influences on the functionality of the sewn products.