The emtec PDA.C02 Penetration Dynamics Analyzer and the Module HVL (high viscous liquids) helps to predict the gluability of paper and board by measuring the converting-relevant parameters surface sizing (surface hydrophobia) and surface porosity. In comparison to the Standard module, the module HVL has especially been designed for tests with very high viscous liquids, such as glue.
To make sure that the necessary product quality can be reached, specifications are agreed between paper maker and converter. These specifications are bases on standard test devices, such as Cobb or Gurley. But often it happens that although the quality of the base paper or board is within the agreed specifications, issues with the gluability, printability or coating-ability occur during the converting.
Since gluability, printability and coating-ability mainly depend on surface sizing and surface porosity, information about these two parameters are very important. But the standard test devices are not able to measure them. In comparison to this, the emtec PDA is able to measure these two very important surface parameters within the time that is relevant for the converting process and by this helps to ensure a well-running converting process and the right product quality.