Screw stopper for receptacle provided with a neck fitted with an external thread and method of manufacture thereof

摘要

This stopper is of the type comprising a cap 3 engaged in the neck 2 of the receptacle and to which there is assembled a skirt 4 in which there is made at least one thread which can be screwed onto the thread of the neck 2. The skirt 4 consists of a sheath segment 4a made of a plastic which is heat-shrinkable in one direction, namely circumferentially, the shaping of its thread being made by heat-shrinking after fitting onto the neck 2 of the receptacle. <IMAGE>