Packaging has become an indispensable part in the food manufacturing process. To improve the appearance and properties of the packaging, a wide variety of coatings and inks are used. Different additives enhance rheological properties, control the wetting dispersion, or in the case of wax increase abrasion resistance. The regulations of these coatings in food packaging applications are very strict in some countries, creating the need for close monitoring of the production process.
A fast, reliable, and simple to use solution for quantifying rheological additives and wax in such coatings is Visible-Near Infrared Spectroscopy (Vis-NIRS). Both parameters are determined simultaneously by Vis-NIRS in less than a minute.