Method, cutting device and apparatus particularly for manufacturing pouches with rounded corners

A cutting method, particularly for manufacturing pouches of flexible containers with rounded corners such as Doypacks and the like, comprising the steps of:

• stepwise advancing at least one, preferably multilayer, ribbon along a substantially rectilinear feeding direction, said ribbon comprising a plurality of recesses along at least one longitudinal edge thereof that is substantially parallel to said substantially rectilinear feeding direction;
• transverse cutting from one longitudinal edge to another of said ribbon and substantially at each one of said recesses, said transverse cutting being performed by means of at least one blade, said at least one blade being movable with respect to said ribbon substantially along a cutting plane that is transverse to said at least one ribbon and to said feeding direction;
• wherein substantially at each one of said recesses, said transverse cutting of the ribbon is performed by means of at least two strokes of said at least one blade,
• and wherein between a first stroke and a second stroke of said at least two strokes of said at least one blade a relative translation is performed between said cutting plane and said ribbon substantially along said feeding direction, so as to level with said second stroke any cutting defects of the first stroke in a region of said recess.

A device for cutting ribbons particularly for apparatuses for manufacturing pouches of flexible containers with rounded corners such as Doypacks and the like, the device comprising:

• a feeding inlet adapted to receive, along a substantially rectilinear feeding direction, at least one ribbon to be cut along at least one substantially rectilinear cutting direction, said cutting direction being transverse with respect to said feeding direction and forming, together with said feeding direction, a geometric plane of arrangement of the ribbon;
• at least one cutting blade adapted to cut said ribbon along said at least one cutting direction;
• a blade holder on which said at least one cutting blade is mounted, said blade holder being mounted on a support and being movable, with respect to said support and transversely with respect to said plane of arrangement, between a first position and a second position in order to perform said cut by means of said at least one blade;
• first movement means adapted to move said blade holder between said first and second positions;
• wherein said support is configured to move with a reciprocating motion substantially parallel to said plane of arrangement between a forward position and a retracted position along said feeding direction in order to allow a respective cutting stroke of said at least one blade in each one of said forward and retracted positions.