Abstract: Of application for sandwich type composite panels (1) formed by a synthetic core, a structural skin and an external film or finishing skin (3) which is in contact with the concrete. The machine comprises a peeling module (4) which incorporates a battery of suction pads (5) which are applied on the upper face of the previously heated external film (3) and are raised detaching it and separating it from the composite sandwich (2), said suction pads (5) being mounted on a horizontal support (6) suspended from some side rails (7) pertaining to a gantry (8) which is displaced vertically by the action of a pneumatic cylinder (10) with respect to a frame (9), having also means of displacement (9) on which the panel (1) is mounted which is moved in the horizontal direction facilitating, together with the vertical movement of the suction pads (5), the peeling of the formwork panel (1).