TSA Softness Analyzer (Source: emtec)
At the 35th Hofer Vliesstofftage on September 20-21, 2022 in Hof/Germany, emtec Electronic will present the Tactile Sensation Analyzer (TSA). This measuring device determines the haptic parameters softness, smoothness, and in-plane stiffness, as well as elasticity and recovery behavior of nonwovens, including products with non-standard sample sizes, such as face masks, diapers and fem care products.
Now more than ever, nonwovens manufacturers are increasingly looking for ways to reduce energy consumption, save costs, and still optimize the quality of their product lines. One approach has been to replace lengthy manual quality control processes with automatic digital solutions. The TSA from emtec Electronic GmbH, Leipzig/Germany, presents a portable device that delivers valuable data about the haptic, deformation, and recovery behavior of nonwovens quickly and reliably.
The Tactile Sensation Analyzer is poised to replace the hand-panel testing, in which a certain number of touch experts compare and rank samples based on overall haptic impression. The organization and implementation of such hand-panel tests are often complex and time-consuming. In addition to the time factor, some of the major disadvantages of the manual hand-panel method include the high variance of individual results. An average value of many samples is usually needed to arrive at a reliable value. The human hand is also incapable of reliably distinguishing between haptic parameters, such as softness or smoothness, and cannot objectively measure how elastic a product feels, for example.
In contrast, the TSA uses a sound analysis in 2 different frequency areas determines a material’s softness and roughness. Parameters such as stiffness, plasticity, hysteresis and elasticity are then measured with a deformation measurement, i.e. how much a product deforms under a certain load and how well it recovers after deformation. Specific algorithms can combine these individually measured parameters into so-called handfeel values, which correlate very well with the human tactile sensation.
Independent industry research testing the functionality and effectiveness of the TSA device has consistently shown that TSA values are highly comparable to the results of other physical tests and handheld panels.