System and method for creating a venturi effect within an orifice

Abstract

An apparatus and method for accelerating a product through 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.