3-DIMENSIONAL FLOW SIMULATION OF A FILM-CASTING PROCESS

Three-dimensional now simulation of a film-casting process was perform ed using a finite element method assuming an isothermal and steady New tonian now. The simulation was carried out under industrial operation conditions. The neck-in and the edge bead phenomena could be simulated . The effects of draw ratio, air gap length, and die width on these ph enomena are discussed. The neck-in and the edge bead phenomena were af fected by the draw ratio and air gap length and not by the die width. The neck-in value, which was defined as the difference between the die width and film width at the chill roll. Increased with the draw ratio and air gap length.