| 摘要 |
A method for producing containers, such as bottles or the like, with a film made of thermoplastic synthetic material, and to an apparatus for performing the method. The process comprises: a step for thermally bonding two strips (3a, 3b) of film made of thermoplastic synthetic material that face one another, so as to form, between the two strips of film, pouches (12) that are open at a longitudinal edge of the strips of film; and a thermoforming step, during which a segment of the two strips (3a, 3b) of film, in which the pouches (12) are formed, is inserted in a forming mold (21a, 21b) that is provided with molding cavities (22) located at the pouches (12), and a pressurized fluid is injected into the pouches (12) through their open side to form them, by plastic inflation, inside the molding cavities (22). The thermal bonding of the two strips (3a, 3b) of film that form the pouches (12) is correlated to the dimensions of the molding cavities (22), so that the thermal bonding line, which delimits the pouches (12), lies inside the corresponding molding cavity (22) at a preset distance from the walls of the molding cavity (22) when the strips of film are inserted in the forming mold (21a, 21b). The thermoforming step is followed by a step for blanking at least the portions of the strips of film that protrude from the base and from the lateral surface of the contour of the containers (30) that are thermoformed at the pouches (12). <IMAGE> |
