Objective Hand Measurement of Toilet Paper

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.