This study investigates the objective hand evaluation of the toilet paper based on the mechanical and surface properties. The objective hand evaluation system for men's suiting was applied to assess the hand of toilet paper. Three primary hand values (stiffness, smoothness, and fullness) for the toilet paper were obtained using the same equations as the men's suiting equations (KN101W series) with minor modification. The objective hand value (Total hand value, THV) of the toilet paper was derived using the general nonwovens equation (KN5LNW). The subjective hand of the toilet papers was assessed by fifty-four females, and the mechanical and surface parameters were measured with the KES-FB system. It became clear that the hand of the toilet paper could be predicted by the equation KN5LNW, for which the calculated error was within the range of the standard deviation of the subjective hand value of each product. Toilet papers with a small value of the mean deviation of the coefficient of friction (MMD) were estimated to provide good hand.

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Along with the trend of automation in apparel industry, some key parameters are applied to establish a prediction model for the sewing optimization between fabric and thread, which has become an important issue in apparel quality control. Hence, the structural properties of fabric and thread are used in this study to establish the optimized scope and prediction model for the quality of the sewed item. It can be noticed from the research results that the sewing quality and the structural properties of the fabric and the thread are in fact highly correlated. Therefore, neural network method can be applied to establish a neural network model between the two. By testing the neural network model established in this study, it is found that the model has high correlation coefficient and low residuals, indicating that the model has good fitting ability. Besides, the optimized scope of sewing quality can be used as a basis for evaluation of sewing optimization between fabric and thread.

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To clarify the aesthetic properties of pantyhose fabric, the design and development of a new product and a wear experiment were carried out. The sheerness of circular plain knitted fabrics made from novel single covered yarns was examined. The relationships between the leg parts of pantyhose fabric with two covering levels in one single covered yarn and the visual impression are discussed. The results show that the aesthetics and sheerness of pantyhose fabric are greatly influenced by changing the covering level of the single covered yarn in the leg parts. It is important to decrease the mean and the standard deviation of the lightness difference between legs with and without the pantyhose fabric on the lower leg part from knee to ankle. A mechanical hybrid system with combined covering and knitting processes is useful for improving the aesthetic properties of pantyhose fabric.

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