HYBRID DISK-CONE EXTRUSION DIE MODULE HAVING A SPILLOVER SURFACE SURROUNDING A PLANAR SEAL SURFACE

摘要

The present invention discloses an extrusion die module (200) having a flat compression seal (206, 208) and a conical or otherwise angled spillover surface (210, 212). The die module (200) promotes a flat surface to flat surface compression seal (206, 208) outside of flow distribution channels (216a-216h, 218a-218h) and promotes better streamlined flow and material combination than a traditional flat disk die module. The die module (200) promotes a reduced overall diameter and wetted diameter in comparison to standard flat disk dies. Further, the present invention relates to a method for utilizing an extrusion die module (200) with a conical or otherwise angled spillover surface (210, 212) to minimize the die surface area wetted by an intermediate layer in a multi-layer coextrusion process.