Extrusion nozzle
An extrusion nozzle including an outlet port having a single opening with a first region, second region, and a pinched region between the two. The pinched region reduces the dimensions of the extrudate in relation to the dimensions associated with the first and second regions. In that way, the extrudate is joined together but may be easily separated into two separate pieces with dimensions related to the dimensions of the first and second region.
1. A multiple extrusion nozzle comprising:
a. an outer extrusion segment said outer extrusion segment comprising an outer surface, an opening, an inner surface, a hollow section defined by said inner surface and an outer extrusion port comprising an inner wall, said hollow section terminating at one end at said opening and at the opposite end at said outer extrusion port, and
b. an inner extrusion segment comprising a threaded section, a shaped body, two channels and one inner extrusion port comprising two axially adjacent inner port openings and an outer wall, said shaped body terminating at one end at said threaded section and at the other end at said inner extrusion port and said channels being interspaced within said shaped body and having diverging axes which originate at a point between said threaded section and said inner extrusion port and terminating at said two inner port openings, said channels being aligned with said two inner port openings, and
wherein said inner extrusion segment is inserted into said hollow section of said outer extrusion segment such that said inner extrusion segment and said outer extrusion segment are aligned radially forming an annular space defined by said inner wall of said outer extrusion port and said outer wall of said inner extrusion port.
2. The multiple extrusion nozzle of claim 1 further comprising a set of indentations at opposing positions on said inner surface of said outer extrusion segment wherein said set of indentations is aligned adjacent to corresponding inner port openings.