Determination of the tensile modulus of facial tissue

Softness is one of the most important factors affecting consumers' product selection and is the main factor that determines the quality of tissue products. It is also the key attribute of facial tissue. However, previous works on the development of physical test methods for softness have commonly focused on bathroom tissue; very few studies related to the development of physical test methods for facial tissue products have been reported. The aim of this study was to analyze the testing conditions affecting the determination of the tensile modulus of facial tissue. Tensile testing was performed under eight sets of test conditions with different test span gauge lengths, sample widths, elongation speeds, and rates of elongation. As a result, the recommended test conditions to determine the tensile modulus of facial tissue are a gauge length of 50 mm, sample width of 25 or 50 mm, and a rate of elongation less than 25%/min. We expect these results to serve as a basis for developing physical measurement methods for the softness of facial tissue. © 2019 Korean Technical Assoc. of the Pulp and Paper Industry. All rights reserved.