A method for the realization of an opening and liquid supplying system (100) for containers (10, 30) equipped with a supplying end, comprising a coupling element (20), connecting means (6) movable from a first position to a second position, and movable protection means (9), the connecting means (6) being suitable for coupling with a needle holder (4) comprising the following steps:
- providing in the coupling element (20) a first hollow end (26), suitable for coupling with the supplying end of the container (10, 30), and a second end (27), closed and suitable for being punched;
- providing on the coupling element (20) a first guiding means (21) for guiding the movement of the connecting means (6) movable from the first position, close to the second end (27), to the second position, close to the first hollow end (26), and vice versa along a first degree of freedom;
- providing on the connecting means (6) an engaging means for engaging with the protection means (9) so as to integrally move along a second degree of freedom, different than the first degree of freedom, and first matches for the first guiding means (21), so as, during the integral movement of the protection means (9) and of the connecting means (6) according to the second degree of freedom, the first matches of the connecting means (6) move from the first position to the second position along the first guiding means (21) of the coupling element (20);
- providing on the coupling element (20) a second guiding means (23) for guiding the removal of the protection means (9);
- and
- providing on the protection means (9) second matches (13) corresponding to the second guiding means (23), so that the removal movement of the protection means (9) corresponds to the movement of the protection means (9) in respect with the connecting means (6);
- making the container, the protection means or the coupling element malleable;
- wherein the coupling of the coupling element (20) with at least one among the container (10, 30), the protection means (9) and the connecting means (6), occurs when the container (10, 30), the protection means (9) or the coupling element (20) is still malleable;
- wherein the first guiding means of the coupling element (20) comprise a first thread, and wherein the first matches of the connecting means (6) comprise a first counter thread, on an inner surface (12) of the connecting means (6) and corresponding to the first thread;
- wherein the second guiding means of the coupling element (20) comprise a second thread, with a direction opposite to the one of the first thread and wherein the second matches of the protection means (9) comprise a second counter thread (13), on an inner surface of the protection means (9) and corresponding to the second thread;
- wherein at least one among the first counter thread and the second counter thread (13) is realized by pressing respectively the connecting means (6) and the protection means on the coupling element (20) while the connecting means (6) and the protection means (9) are still malleable.