Fully enclosing engine or unit capsule of a motor vehicle with air cushion foil

A fully enclosing engine or unit capsule of a motor vehicle, said fully enclosing engine or unit comprising

• (a) a sound-absorbing support layer made of a flexible compound with Shore hardness in the range of 60 to 95, a thickness in the range of 1.2 to 4 mm, a weight per unit area of 1.44 to 12 kg/m2 resulting from a density of 1.2 to 3.0 g/cm3,
• (b) a PUR-foam with a density in the range of 45 to 105 g/l, a storage modulus in the range of 20 to 250 kN/m2, and a loss factor of 0.3 to 0.8, and
• (c) an at least two-layer, cushion foil filled with air, nitrogen or an inert gas and formed of polyethylene terephthalate (PET), polyamide (PA) 6 or 6.6 partially or over an entire surface between the carrier layer and the PUR foam, and
• wherein the cushion foil has individual nubs having the same or different geometries/contours.