System and method for creating a venturi effect within an orifice

1 . An orifice comprised of a spherical section leading into a cylindrical section which creates a venturi effect.

2 . The orifice of claim 1 wherein said venturi effect improves fiber alignment of a material placed through said orifice.

3 . The orifice of claim 1 wherein said venturi effect stretches a material drawn through said orifice.

4 . The orifice of claim 1 wherein said orifice creates the lowest cross section through a material passing through said orifice.

5 . The orifice of claim 1 wherein said orifice defines a path, and a plurality of said paths each have an outlet path portion at an angle of approximately 0 to 75 degrees from center of the orifice vertical axis.

6 . The orifice of claim 1 wherein said orifices define a path, and a plurality of said paths each have an outlet path portion at an angle of approximately 0 to 45 degrees from center of the orifice vertical axis.

7 . The orifice of claim 1 wherein said orifices have a diameter such that ratio of diameter of spherical section to said diameter of cylindrical area is approximately 1.1 to 2.5.

8 . The orifice of claim 1 wherein said orifice utilizes intersection of a spherical section with a cylinder in order to create a cross section which represents a venturi effect.

9 . A device comprising a multiplicity of orifices;

said orifices comprise a spherical section which intersects a cylindrical section,

wherein ratio of diameter of said spherical section and diameter of said cylindrical section are of a ratio to create a choked flow effect on product as it passes through said orifices.

10 . The device of claim 9 wherein said orifices change size from a larger to a smaller cross-sectional area with vertical or concave sides having a sharp edge.

11 . A device comprising a multiplicity of orifices which comprises a choke plate, nozzle, venturi, or a restriction to flow which results in product acceleration with a corresponding pressure drop through said orifice.