how to flattern this sat file

Hi

Attached is a ACIS (Sat file I have been sent).

I am trying to flaten it to produce a flat pattern for profile burning.

When I pick a face then go 'collect all bends' a message comes up saying there are no bends available.

My question is what would be the easiest way to be able to create a flat pattern of this component.

thanks

Mark (SolidWorks 2010)

SolidworksParts And Features