Flow Control Extrusion Die

The unique design of this multi-strand die provides identical shear history for each strand regardless of location across the die. Distribution is made by directing, not restricting flow. Because shear history and residence time are identical across the die, flow rate and swell are identical for each strand. This design is of particular value for shear sensitive or low viscosity materials. The technology has been applied to strand/strip dies and can also be used in rounds, pipe/tubing, sheet, film, and striping or co-extrusion dies.