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.

 
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> Method and apparatus for manufacturing plastic optical transmission medium

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