1. A substantial improvement to what was thought as truly modular design - each layer is essentially a two layer die producing two layer film.

2. Polymer distribution on the face of modular disks rather than on the outside of a cylinder or cone.

3. Computer designed flow passages based on plastics engineering software that optimizes pressure and residence time, and ensures that the spiral does all the polymer distribution, leaving the die gap to be sized based on shear stress to eliminate melt fracture.

4. The entire melt flow passage from extruder adapter to the exit of the die is highly streamlined, with no sharp bends to cause dead spots, materials which were formerly difficult or impossible to run can now be successfully processed.

5. Each spiral is fed by two ports allowing increased material and temperature homogeneity of the melt entering the spirals. These streamlined Flow Mixing channels have a low wetted surface area resulting in better mixing without any dead spots and insuring rapid flushing.

6. The polymer flow passages are short in order to reduce residence time resulting in less possibility of polymer degradation.

7. Taper-lock module design enables ease of die assembly and ensures perfect concentricity of modules.

8. All layers have roughly the same wetted surface area because distribution takes place on the disk's surface.

9. Temperature isolation provides the ability to operate adjacent modules at temperature differences up to 60 °C in order to process each layer at their recommended temperatures, with minimal effect from other modules.

10. Modular design allows adding, removing or relocating of layers with minimal effort and expense.

11. Available in one to ten layers in any configuration.

12. increased effective tower height due to low profile modular die design.