An airbelt inflator is provided for supplying and directing gas from the combustion of pyrotechnic materials into an inflatable safety belt or airbag. 25 mm2 and approximately 1 cm2, characterized in that in a first stage the hollow mouldings are coated at reduced pressure with the filling material, a filling material coating temperature being set in such a way that the filling material is flowable and in which in a second step the pressure is raised, so that the flowable coating material enters the cavities. A substantially virtual appliance may thus be formed by the combination of functionality modules that are found in separate appliances.