You can name UV layouts if you export them.That's if you are going to be working outside of Blender. Within Blender once you uvmap an object the layout becomes apart of it. If you are wanting to work with separate parts of a models uvmap... you can create material groups or vertex groups to assign the faces to. Probably since you are texturing material groups would be better. This will give you more control over your render.

____________________________________________________

"The true sign of intelligence is not knowledge but imagination".

Albert Einstein