Basis Weight Prediction Using Optical Transmissivity and Caliper Data For decades, the paper industry has relied on beta-radiation gauges to measure basis weight, one of the most important quality parameters in paper, board and nonwoven products. In a recent bachelor’s thesis conducted by Nuutti Loikkanen at Tapio Measurement Technologies, we
Continous Profile Porosity Sensors Porosity: an important quality parameter Porosity and air/gas permeability are important quality parameters for many paper, board and nonwoven products. Laboratory testers can be used to obtain porosity measurements from individual samples. In many cases it would be useful to know if the porosity varies as
How Product Variations can Cause Winder Vibration A winder–cutter is not an easy system to optimize. Changing web tensions, roll diameters, masses and rotational frequencies all interact, and the behaviour of the machine changes continuously during the winding cycle. This makes it challenging to avoid resonances and unwanted vibration. During
Locate problematic machine elements using Tapio MD Analysis During a shutdown, several components are replaced. But how do you know which one actually caused the problem? In many cases, recurring machine-direction variation continues after maintenance, because the root cause was not correctly identified. In paper, board, and other continuous production