Patent ID: 7618360

Claim:
A base insert device for the formation of crossed bases in crossed base valve paper bags, said device comprising: folding devices which introduce folds at ends of tubular sections from which the bags are produced; one or more gluing stations, which apply glue to at least one of regions of the folds for gluing and sheets provided for gluing to the bases in the gluing stations; and at least one pressing station in which the folded bases and the sheets are brought into contact and glued, at least one of the gluing stations including glue outlet openings which may be selectively supplied with glue such that the selection of the glue outlet openings defines a format of the glue application, and said glue outlet openings being provided with at least two application heads of which at least one application head is displaceable with a head positioning device in a direction orthogonal to a feed direction of at least one of the sheets and the folded bases such that as a result of the displacement, a relative movement of the two application heads occurs, each of the application heads being provided with an application plate in which several glue outlet openings are each arranged equidistantly at a distance (A) on one line in a direction perpendicular to the feed direction of at least one of the sheets and the folds of the bases, the application plates being configured such that adjoining glue outlet openings of two different application heads are positionable with the head positioning device at a smaller distance than the distance (A).