Procedure for the continuous production of bags or sacks with valve closure through thermoplastics in the form of sleeves or movies (Machine-translation by Google Translate, not legally binding)

摘要

Procedure for the continuous production of bags or bags with valve closure, by thermoplastics in the form of a sleeve or film, characterized in that the welding of the valves and the bottoms of the bags takes place without interrupting the movement of the bags. unwinding of the sleeve, or of the films of its roll, being provided electrodes supported by a carriage that runs with the same speed of the sleeve or of the films, and therefore stationary with respect to the same and that, finished the welds , back with an ideal speed to its initial position, marching in the opposite direction to the sleeve or film, which continue its march always in the same direction, starting again the cycle after said recoil. (Machine-translation by Google Translate, not legally binding)