Safety capsule for a container

A closure capsule for closing a container, comprising:

• a cap (2) that can be associated with a container and comprising a frangible mouth (20);
• a cutter (3) comprising a cutting edge (30) designed to open said frangible mouth (20);
• a covering (4) that protects both said cap (2) and said cutter (3) and comprises an intactness band (40);
• characterized in that said closure capsule (1) is movable from a rest configuration, wherein the frangible mouth (20) and the intactness band (40) are intact, to an operative configuration, wherein the intactness band (40) is removed and the frangible mouth (20) is broken;
• in the rest configuration, the cap (2), the cutter (3) and the covering (4) contribute to the definition of walls of a reservoir (8) for containing a product to be dropped into the container in the operative configuration;
• the cutter (3) is a body that defines a cavity (33) within which it is possible to house at least part of the product;
• said closure capsule (1) comprising:
• a first connection means (5) afforded on the covering (4) and on the cutter (3) and that makes said cutter (3) and at least a first part (400) of said covering (4) rotate integrally;
• a threaded connection means (9), which, in passing from the rest configuration to the operative configuration, couples the covering (4) and the cap (2), thereby bringing about rotational-translational movement of the first part (400) of the covering (4) and the cutter (3) with respect to said cap (2);
• the cutter (3) also comprising a widening zone (31), wherein, as it moves away from the cutting edge (30), the cross section of the cutter (3) increases.