Beside a high quality of the raw material cardboard a perfect creasing fold leads to highest speeds in the gluing process. With our three-dimensional microscope which allows optical three-dimensional measurements in the micro and in the nano area by variation of the focus we test splitting of layers and the stamping of the creasing fold. With an up to 100-fold enlargement we reach a maximum vertical dissolving of 20 nano meters; that equals 0.0000020 mm. Similar to our test diecutter also our three-dimensional microscope is equipped with a digital video recording and a costly video analysis software. Our optical measuring device is usable for all kinds of investigations of the surface structure and has available evaluation programmes for profile, area and volume analyses. Thus a direct measuring and evaluation of the stamping of a creasing is possible. By reproduction of the full colour infomation of the tested objects the procedure is also suitable for example for the colour, varnish or glue penetrations into the material to be imprinted.
A few questions in the focus:
- How can the net output of a gluing machine be increased by an optimum creasing fold?
- Which influence on the quality of the creasing has the material to be imprinted?