Part of a safety module comprising an inflatable restraint system, among others for vehicle seats, and manufacturing method

The safety module assembly (1) comprises a foam body (2) with a cavity (4) for an air bag (3) with a outer layer of covering material (6) with a tearing zone in the form of a low-strength seam that opens when the air bag is inflated. The inner surface of the covering material is covered at least partly by a separating film layer (11) that extends over part of the foam body. The safety module assembly (1) comprises a foam body (2) with a cavity (4) for an air bag (3) with a outer layer of covering material (6) with a tearing zone in the form of a low-strength seam that opens when the air bag is inflated. The inner surface of the covering material is covered at least partly by a separating film layer (11) that extends over part of the foam body. The film layer is joined to the air bag and foam body covering material layers (6, 9) by seams (10) of greater strength than the tearing zone seam.