PROCESS FOR MAKING PLASTIC CLOSURES AND CLOSURE

摘要

A process for realizing plastic capsules (1) comprises: a first forming stage for realizing a cap (2) having an internal annular projection (2a) arranged in proximity of an open lower zone of the cap (2); a second forming stage of an annular element (3), provided with a security element (4) and with an external annular projection (3a) for inserting, during an assembly stage of the cap (2) with the annular element (3), over the internal annular projection of the cap (2). A stage of mechanical working is performed on the cap (2), for realizing, on an internal wall of the cap (2) and in proximity of a lower zone thereof, an annular incision (2b) which does not pass entirely through the cap (2) and which receives at least a part of the external annular projection (3a)