Improvements in the systems of bundling rolls by self-adhesive tape, especially intended for rolls of filament, characterized essentially by the fact comprising clamping means for taking and linear extension of the self-adhesive tape between the binding means and the roll to be tied, arranged this according to a plane perpendicular to the tape and to the adhesive surface thereof; by providing a cutting means for the tape in a convenient dimension; because the attaching means is composed of two equal bodies, in the form of a die, separated from one another by the width of the roll, whose dies have respective connections to an air compressor and a vacuum pump, respectively; by providing said dice with windy paths, communicated with the vacuum pipes, and whose suction cups are located in the front base of the dice, according to a forward movement of the same, so that said suction cups retain the portion of tape cut by its non-adhesive surface, transporting it until it adheres to the upper outer part of the roll and sides, continuing the advance of the pressed dice on the roll until it exceeds the size thereof, at which moment, the pressurized air outlet is produced. Through a nozzle to the effect located on the inside side of one of the dice, whose air outlet is produced as a jet under pressure that rips the tape from the corresponding suction cup and automatically places it inside the adjacent side of the roll; because in the immediate phase equal action is produced in the compressed air outlet nozzle on the opposite side, so that the other end of the tape will be adhered on the adjacent side of the roll and the previously fixed end of the tape, obtaining the overlap of both ends of tape to form, a guarantee tape. (Machine-translation by Google Translate, not legally binding)
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