THE EFFECT OF COATHANGER DIE MANIFOLD SYMMETRY ON LAYER UNIFORMITY IN MULTILAYER COEXTRUSION

摘要

Multilayer coextrusion is a process in which two or more polymers are extruded and joined together in a feedblock or die to form a single structure with multiple layers. This paper will discuss the effect of die manifold channel symmetry of the flow of coextruded structures through coathanger style dies.