MACHINE AND METHOD FOR FORMING BAGS OF FLEXIBLE MATERIAL

A machine (1) for forming bags (100) of flexible material comprising: - conveying means (3) configured to advance a film (2) of flexible material along an advancement direction (A); - forming means (5) configured to fold the film (2) along at least one folding line (6) so as to bring together and superimpose two flaps of the film (2) forming a folded film (2) with an open longitudinal side (7); - a processing path (9) of the folded film; - transverse sealing means (12) arranged along said processing path (9) and configured to make on said folded film (2) a transverse sealing (105) which extends between said at least one folding line (6) and said open longitudinal side (7) of the folded film, so as to create two opposite sealed edges (102) for each bag (100), wherein said processing path (9) comprises a first straight section (10) which directly departs from said forming means (5) and a second straight section (11) which is downstream to the first straight section (10) with respect to the advance direction (A), said first and second straight sections being spaced apart from each other and run substantially in parallel, in such a way that the portion of the folded film (2) along the first straight section (10) and the portion of the folded film (2) along the second straight section (11) lay on a respective plane which face each other; and wherein said transverse sealing means (12) are arranged along said second straight section (11) of the processing path (9). L'invention concerne une machine (1) pour former des sacs (100) de matériau souple comprenant : - des moyens de transport (3) conçus pour faire avancer un film (2) de matériau souple le long d'une direction d'avancement (A) ; - des moyens de formation (5) conçus pour plier le film (2) le long d'au moins une ligne de pliage (6) de manière à rapprocher et superposer deux rabats du film (2) formant un film plié (2) avec un côté longitudinal ouvert (7) ; - un trajet de traitement (9) du film plié ; - des moyens d'étanchéité transversaux (12) agencés le long dudit trajet de traitement (9) et conçus pour réaliser sur ledit film plié (2) une étanchéité transversale (105) qui s'étend entre ladite au moins une ligne de pliage (6) et ledit côté longitudinal ouvert (7) du film plié, de façon à créer deux bords scellés opposés (102) pour chaque sac (100), ledit trajet de traitement (9) comprenant une première section droite (10) qui part directement desdits moyens de formation (5) et une seconde section droite (11