Procedure for manufacturing containers in thermoplastic material to contain liquid, pastoral or pulverulating substances (Machine-translation by Google Translate, not legally binding)

摘要

Process for manufacturing containers in thermoplastic material to contain liquid, pasty or powdery substances, characterized in that they provide a thermoplastic tubular body, welding together the inner walls of said body in successive transversal longitudinally spaced zones leaving, in the welding zones, portions of said opposite non-welded walls to form, in each welding zone, a conduit (2) communicating at one end with the container space and the other end of which is closed, piercing the two adjacent walls of the conduit in an area next to the external one of the same that is closed, so as to obtain two coaxial through openings (2a) for the filling, separate the filled and closed individual containers by cuts (5a, 5b) made in the transverse welding zones to the outside of the ducts, inserting a needle (8) into the duct (2) through one of the aforementioned openings, inserting the substance through said needle, extracting the needle from the duct while compressing the walls of said duct, towards each other, to prevent reflux the substance of the container and closing the openings made in the walls of the duct by mechanical means appropriate. (Machine-translation by Google Translate, not legally binding)