In collaboration with the research and service institute Papiertechnische Stiftung (PTS) Heidenau in Germany, Voith is introducing a new measuring method to detect unwanted tacky contaminants known as stickies. The measuring method, which uses a near-infrared (NIR) camera, allows the reliable detection of contaminants along the papermaking process and offers higher measuring accuracy and a wider range of applications compared to conventional methods. The associated technical rule was recently published as DIN SPEC 6745.
Higher measuring accuracy and wider range of applications. Compared to established methods in the paper industry, the measuring technology uses NIR to determine more comprehensive information about the contaminants with a high measuring accuracy. The spectral measurements obtained are compared and assigned to values of known contaminants. This allows further classification of the contaminants based on their chemical composition. In addition, both adhesive and non-tacky contaminants can be identified and classified using the NIR measuring technology.