Thanks all for your answers.

Michael, Lamina seems to be a non updated software, and for $360 I could prefer Unfold3D software...

Thanks for others suggestions, but I would prefer to use MoI instead of Rhino, and my original drawing (3D showed with link above) was made within SurfPlan yet. The SurfPlan problem for me is the limitation to already knew kite stuff, because I work on an invention very special (take a look at www.supsailing.info for more details)

Anyway, UV-mapping functionnality seems to be the right name of what I need, and for that I maybe found a little software name Pepakura Designer. But I will investigate further, as Wings3D and Blender for UV-unwraping.

Best Regards,
Guy