Stability of cast-film extrusion of various metallocene polyethylenes

Abstract : The Cast Film process is one of the most widely used polymer processing technology to produce polymer films. A polymer melt is extruded through a flat die and then stretched in air by a chill roll to generate a thin film as illustrated in Figure 1. The molten film is quenched on the surface of the chill roll (typically water-cooled and chrome-plated) by an air knife or a vacuum box.