Procedure for the manufacture of containers for liquid products of medical, pharmaceutical, cosmetic or similar type, comprising the following phases: - modeling (I) by means of an extrusion mold (2) of at least one layer of plastic material to form at least one substantially tubular semi-finished product (1) having a first end (3) and a second end (4)； - closing said tubular semi-finished product (1) within a forming mold having two half-shells (6, 7), said two half-shells (6, 7) being modeled so that, when said semi-finished product (1) is closed inside of the forming mold, the first end (3) of the semi-finished product (1) is closed while the second end remains in fluidic connection with a pneumatic nozzle； - blowing (II) an expansion gas (5) in said semi-finished product (1) through said second end (4) into said forming mold (6, 7), to form at least one strip (8) of containers (9), so that each container (9) is provided with a containment body (10) to contain at least one liquid product that, at said first end (3), extends into a closed distribution neck (11 ) and that at said second end (4), it extends into an open-bottom spike (15), in which the transverse dimensions of said lower spikes (15) of the packages (9) are substantially smaller than the transverse dimensions of said containment bodies (10) of the containers (9), and in which said containers (9) of the strip (8) are detachably associated with each other along respective first connection lines (13) defined on said containment bodies (10) and along respective second connection lines (14) defined on re said closure caps (12), with at least one of said first connection lines (13) and said second substantially longitudinal connection lines (14)； - introducing (IV) said liquid product into said containment bodies (10) through said bottom pins (15)； and - sealing (V) said bottom pins (15) to form a sealing lip (19) for each package (9). The sealing lips (19) are formed along a transverse direction substantia
