KALLEL , Achraf

A new coating process involving a short stretching distance (1 mm) and a high draw ratio (around 200) is considered. The resulting thin molten polymer film (around 10 micrometers) is set down on a solid primary film and then covered by another solid secondary film. In experimental studies, periodical fluctuation in the thickness of the coated...

The polymer cast film process consists of stretching a molten polymer film between a flat die and a drawing roll. Drawing instabilities are often encountered and represent a drastic limitation to the process. Newtonian fluid film stretching stability is investigated using two numerical strategies. The first one is a 'tracking' method, which...

Health regulations are becoming increasingly restrictive which leads to develop solvent free laminating processes. Hot melt adhesives represent an interesting solution to bond two pre-printed substrates of polymer for packaging applications for example, but their high viscosities require extruding the polymer formulation through important die...