Method and apparatus for a bag machine

A bag machine for making bags from a film that travels along a film path in a downstream direction, comprising:

• a sealing station disposed along the film path;
• a perforating station, disposed along the film path downstream of the sealing station, wherein the perforating station includes a control input;
• and
• a closed loop controller, disposed along the film path downstream of the perforating station, and disposed to detect the seal and perforation and to provide, to the control output, a control signal in response thereto.

A bag machine for making bags from a film that travels along a film path in a downstream direction, comprising:

• a sealing station disposed along the film path;
• a perforating station, disposed along the film path downstream of the sealing station;
• and
• a perforation detection station disposed along the film path downstream of the perforating station.

A bag machine for making bags from a film that travels along a film path in a downstream direction, comprising:

• a sealing station disposed along the film path;
• a perforating station, disposed along the film path downstream of the sealing station;
• and
• a seal inspection station disposed along the film path downstream of the perforating station.

A method for making bags, comprising:

• imparting at least one seal to a film;
• thereafter imparting at least one perforation to the film, thereby creating a bag;
• thereafter monitoring the distance between the at least one imparted seal and the at least one imparted perforation;
• and
• repeating the method to form a plurality of bags.

A method for making bags from a film that travels along a film path, comprising:

• imparting at least one seal to a film;
• thereafter imparting at least one perforation to the film, thereby creating a bag;
• closed loop controlling the distance between the at least one seal and at least one perforation;
• repeating the method to form a plurality of bags.

A bag machine for making bags, comprising:

• means for imparting at least one seal to a film;
• means for thereafter imparting at least one perforation to the film, thereby creating a bag;
• and
• means for thereafter monitoring the distance between the at least one imparted seal and the at least one imparted perforation.

A bag machine for making bags from a film that travels along a film path, comprising:

• means for imparting at least one seal to a film;
• means for thereafter imparting at least one perforation to the film, thereby creating a bag;
• and
• means for closed loop controlling the distance between the at least one seal and at least one perforation.

A bag machine for making bags from a film that travels along a film path in a downstream direction, comprising:

• means for imparting at least one seal to a film;
• means for thereafter imparting at least one perforation to the film, thereby creating a bag;
• and
• means for inspecting the at least one imparted seal, after the perforations has been formed.