Abstract: The present invention relates to a mould for making articles of expanded plastics material and to a machine adapted to receive such a mould. The mould according to the invention comprises a finned body whose central bore constitutes a cavity. The latter is closed in its lower part by a plunger while the top of this mould comprises a support provided with a guide in which a slide element moves longitudinally. The latter comprises a perforation intended for the injection of matter into the cavity, and a hole for ejection of the moulded piece after translation of the slide element.

Abstract: A bottle stopper made of expanded plastic material and having a cylindrical side wall and transverse end walls, the end walls having a bead portion comprising a rounded peripheral edge curving smoothly into the side wall, and the end walls having concave central depressed portions which expand as the stopper is radially compressed by insertion into a bottle.

Abstract: A capping capsule with a thin wall comprising a tearable guarantee strip connected to the skirt of said capsule by means of two rupture lines of reduced thickness. The tearable guarantee strip is provided with vertical ribs spaced from each other, the thickness of which rapidly decreases to reach zero at the edges of said strip defining the crimping lines.

Abstract: A composite stopper comprises a body of resilient plastics material and a head surmounting the body. The head has a skirt extending around the body and a sleeve which is force fitted into a blind recess in the body. The fit of the sleeve causes the adjacent body portion to expand into engagement with the inner surface of the skirt.

Abstract: The invention comprehends a capsule for stoppering the neck of a bottle, characterized in that its skirt has a cross section which is cylindrical practically over the whole of its vertical height, has a slight thickness, substantially uniform over the whole of its height, and includes around its inner wall, a retaining rib of triangular section intended to be anchored and fit beneath the collar on the neck of the bottle.

Abstract: A screw threaded cap for stoppering and re-stoppering of bottles enclosing gaseous beverages such as beer, has a base comprising a resilient lip adapted to co-operate with the junction of the bore of the bottle neck and its end surface. Ribs limit the distance between the latter and the corresponding surface of the base. The upper portion of the skirt has a rounded profile preventing cracks.