método para adaptação térmica de folhas de material sintético a se tornarem adesivas assim como um dispositivo para adesão de folha de material sintético com um cilindro transportador comandado por temperatura.

摘要

Process for setting the temperature of plastic film, which is to be bonded and which exists preferably in the form of slips (8), on collapsed tubular pieces or workpieces (2) made of plastic film, for example valve slips on the raised bottom squares, or bottom cover sheets on the assembled bottoms of block bottom valve sacks, whereby the tubular pieces or the workpieces are conveyed by means of a conveyor with a plate or a table (1) and fed into a slit between a counterpressure element, preferably a counterpressure roll (4) and a suction cylinder (6), and whereby the plastic film to be bonded is fed and transferred by a conveying cylinder (7) to the suction cylinder (6), whereby the plastic film to be bonded is already heated in the roll slit during transport. Furthermore, a device is presented for carrying out the process that exhibits a heatable conveying roll.