Registered trademark for a screw cap made by the French company ALCAN Packaging Capsules, the closures of all kinds. STELVIN is a word from STELCAP (registered trademark for screw caps) and VIN. It is a special aluminum closure for wine bottles. A further development is Stelvin lux +, which has no corrugation on the outside and of a conventional one cork is indistinguishable. This even led to the non-expert initially bottles with a corkscrew tried to open. The name STELVIN has become synonymous with screw cap but there are also some other brands. The company ALCAN 2009 has a special closure for champagne (Sparkling wine) called MAESTRO presented with the champagne house Duval-Leroy was developed.