In this case, it's almost impossible without any context, or at least without the field in which this word is found.
Taking into account your previous request, one might think that you're into paper manufacturing or the like.
If "cordona" is a somewhat "slang" noun deriving from "cordonatura" = creasing, a possible translation could be "creasing cutter".
Considering, of course, the correct spelling of the word. Because "tagliacordone" would give many other possibilities (cord cutter, string cutter, etc.) Again, the complete lack of context makes it almost impossible to help you.
Buon lavoro!