An analytical approach to assess the interrelation of surface properties and softness of tissue paper

The tissue industry constantly strives for improving the overall quality of paper, as customers pay more attention to special features when it comes a purchase decision between different products. As producers need optimize their processes and furnish mixtures keep production costs low, accurate fast methods are crucial characterization important properties. Here, we present method surface regarding roughness describe its relation softness properties, based on sample set dry-creped bath (DCT) with amounts softwood (SW), hardwood (HW), nonwood pulp (NWP). is complex consists several overlying structural features; thus, optical non-contact measurement principle focus variation was used provide robust reliable topographical information. Based obtained 3D data, areal analysis performed determine samples, which described by developed interfacial ratio (Sdr) power spectral density (PSD). To properties (TS7) tissue, widely-used analyzer (TSA) in employed. stiffness (D) parameters this instrument were considered characterization. results (Sdr PSD) TS7 measurements show good linear correlation, higher implying TS7. presented evaluation these aspects allows an objective, fast, assessment relevant addition standard panel tests also applicable other hygiene