Innovative Approach to the Design of Profile Extrusion Dies
March 17, 2015
Author(s): Nelson Gonzales, Paulo Teixeira, Luis Ferras, and ´ Alexandre Afonso
Today, due to the continual emergence of new and sophisticated products, profile extrusion faces new challenges that are motivating the adoption of innovative design methods. The major problem in designing a profile extrusion die (typically used, for example, in manufacturing decking, medical catheters, and electronics) is how to achieve an even flow distribution owing to the complex rheology of the materials employed and the intricate, sometimes counterintuitive flow phenomena occurring inside the flow channels. The traditional trial-and-error approaches usually employed in the design of profile extrusion dies require highly skilled designers whose success depends heavily on their experience. In the absence of any previous practice with similar products, these approaches may involve many trials and do not guarantee satisfactory results. Consequently, traditional die design methods consume resources (time, material, and money) and thus are ill suited to a highly competitive context.