Abstract: A liftgate structure having a composite inner panel with an outside surface having a lower perimeter surface area extending across the entire width of the composite liftgate structure. Connectable to the inner panel is a composite outer panel that has an inside surface with a lower perimeter surface area extending across substantially the entire width of the liftgate structure. Between the inner panel in the outer panel is a backing curtain. The backing curtain is connected to the outside surface of the inner panel such that the backing curtain is positioned between the outer panel on the inner panel and extends substantially across both the lower perimeter surface area of the inner panel and the lower perimeter surface area of the outer panel. The backing curtain prevents broken pieces of the outer panel for moving past the backing curtain in the event of an impact on the liftgate structure.