PACKAGE FORMING UNIT, PACKAGING APPARATUS HAVING A PACKAGE FORMING UNIT AND METHOD FOR FORMING PACKAGES

There is described a package forming unit (9) comprising a plurality of jaw units (17), each having at least one respective operative assembly (26) adapted to engage the tube (3) and to at least partially form a, in use, the advancing tube (3), one respective sealing element (27) adapted to at least partially transversally seal the tube (3) along a transversal sealing band (18) and a pair of interaction tabs (20) adapted to interact with the tube (3). Each jaw unit (17) can be controlled as a function of the filling level of the tube (3) in at least an operative configuration in which the respective operative assembly (26), the respective sealing element (27) and the respective pair of interaction tabs (20) are controlled in respective active states while advancing along respective operative portions (R1; S1) and a partial operative configuration in which the respective sealing element (27) is controlled in the respective active state and the respective operative assembly (26) and/or the respective pair of interaction tabs (20) is/are controlled in a respective inactive state while, in use, advancing along the respective operative portion (R1; S1).