Abstract: A rosy pink colored object has a first layer of nitride of an element chosen from the group comprising Ti, Zr, Hf, or a mixture of these elements. This first layer includes at least an element chosen amongst Al, C and elements of the groups Vb and VIb. A second layer comprises a mixture of palladium (Pd) and indium (In). Certain ternary metals such as Al or Cu may be added to the PdIn mixture. The covering may be used in jewelry, optometry or horology.

Abstract: To prevent an end of a filled container, upon heating by a hot air for subsequent welding of edges thereof, from coming into contact and sticking to a retainer, a centering gas such as, for example, air is supplied from an external source to the container end. Edges of the filling opening of the container are heated by a hot gas for a subsequent closing of the same through a nozzle introducible into the filling opening of the container end. A centering fluid is directed at the end of the container with a component of flow of the centering in an axial direction of the container to provide for a contact-free centering of the container end.