Abstract: The invention provides a method of making a stopper (2) of cork of natural and/or synthetic origin for a bottle of sparkling wine of the Champagne type, said stopper (2) having a base suitable for constituting a fraction of the inside wall (17) of said bottle (6) and an outside wall (30) suitable for bearing against the inside wall (24) of the neck (4). The method consists: in acting during closure of said bottle (6) to deform said outside wall (30) of said stopper (2) longitudinally over at least a portion extending to its base, so as to provide at least one channel-forming groove (18, 33) in said stopper; and in maintaining the longitudinal deformation throughout the period said bottle (6) is closed by said stopper (2) so that said channel-forming groove (18, 33) persists when said bottle is partially opened.

Abstract: Method of producing a product including a carrier for audio and/or video digital data, of the audio or video compact disc type, by: printing on the surface of a blank compact disc opposite the reading surface, an informative picture relating to audio and/or video digital data which are intended to be recorded subsequently on the compact disc, and offering the printed blank compact disc for sale. The compact disc carries, on an opposite face, a printed informative picture intended to be recorded subsequently. The compact disc is free of any digital data which are intended to be recorded subsequently, and the product is accessible to a server via a digital telecommunications network, of the internet, with a view to downloading from the server, the data intended to be recorded on the printed blank compact disc.

Abstract: The invention provides a method of making a stopper (2) of cork of natural and/or synthetic origin for a bottle of sparkling wine of the Champagne type, said stopper (2) having a base suitable for constituting a fraction of the inside wall (17) of said bottle (6) and an outside wall (30) suitable for bearing against the inside wall (24) of the neck (4). The method consists: in acting during closure of said bottle (6) to deform said outside wall (30) of said stopper (2) longitudinally over at least a portion extending to its base, so as to provide at least one channel-forming groove (18, 33) in said stopper; and in maintaining the longitudinal deformation throughout the period said bottle (6) is closed by said stopper (2) so that said channel-forming groove (18, 33) persists when said bottle is partially opened.