Thanks to decades of experience and a wide range of measurement and control technology, the Bavarian machine manufacturers are able to support manufacturers in monitoring and controlling important parameters during the production process. Different sensors are available depending on the application.
Matthias Wulbeck, expert for quality measurement at Mahlo, explains the differences: "Our Gravimat DFI sensor is part of the modular system Qualiscan QMS and measures the basis weight with the help of isotope radiation". The measurement is based on the attenuation of radioactive radiation by the substrate in the measuring gap. This attenuation in intensity is an indication of the basis weight of the product. If the density is uniform, the basis weight measurement can also be used to draw direct conclusions about the thickness of the nonwoven fabric. In order to do justice to different material properties, Mahlo works with different isotope variants. "For products with a weight between 10 and 1400 g/m² we use Krypton-85, for 100 to 6000 g/m² we use Strontium-90".