The VEL™ , Multi-Layer module is used for the analysis and design of multi-layer flow regions in coextrusion dies. Based on the Finite Element Method (FEM) of mathematical analysis, this program can provide the user with a very fast and accurate prediction of the basic flow characteristics needed to design a coextrusion system. Calculation speed is maximized by dividing the flow field into many small sections and performing a 1-D analysis, based on a fully developed flow assumption, in each section. Pressure drops, velocities, shear stresses and interface positions are some of the flow characteristics that are calculated. The user-friendly, intuitive interface and efficient solution technique allows the user to optimize channel designs quickly and easily.

The VEL™ , Muti-Layer module has been developed with the extrusion process engineer in mind. Many world class coextrusion die manufacturers use the Multi-Layer module as a part of their daily design procedures. The efficient analysis technique makes it particularly useful for the analysis and design of systems having 3 or more layers. With both planar and annular flow field capability, this module has been successfully applied to the analysis and design of coextrusion dies used in tubular and flat film, sheet, pipe, coating and blow molding applications. Combined with the Flat Die module and the Spiral Die module, you have all the tools you need to analyze and design coextrusion dies for almost any application.

The VEL™, Multi-Layer module features:
- improved graphical design interface
- planar or annular flow field analysis
- capability for up to 20 layers
- fast calculations
- improved image/results saving capability
- improved Material Database interface