Vertical packaging machine and method

Vertical packaging machine (31) for packages (16) such as boxes, bags and the like, comprising a closed path (32) along which gripping means (33, 33A, 33B) are movable to grasp and carry said packages (16), means (36, 37) for feeding products to the machine and dosing means (38) to direct a predetermined amount of product to said packages, characterized by further comprising at least one plurality of product feeding containers (1, 21), said containers (1, 21) being disposed above a corresponding plurality of gripping means (33) of the packages (16) and being movable along one or more guides to follow at least part of the path of said gripping means (33) and packages (16) present on said gripping means (33);

• where said containers (1, 21) are assembled on means sliding inside said guides and they are composed of several portions (5A, 5B, 6A, 6B, 6C, 17A, 17B, 18A, 18B) and the position of said portions (5A, 5B, 6A, 6B, 6C, 17A, 17B, 18A, 18B) can be adjusted by said machine (31) to change the dimensions of said containers (1, 21).