Can I export surfaces as solid polygons to illustrator?

When I cut a section or plan and try to export to illustrator, surfaces are always just lines with separate lines for the isocurves. Can I just have these export as a polygon with stroke and fill? It would make making 2d drawings much easier. Make2d also gets rid of the fill so it isn’t very helpful.

To get fills into illustrator, you will need to create hatches in Rhino first, then export them as ai. Just tried it with a solid hatch and it works including color assignment (using CS5, Illustrator 15.0.3)