FIELD: tobacco industry; cigarette packets making. SUBSTANCE: rigid packets with hinged covers are made of stamped blanks with central longitudinal part and two parts, each consisting of train of longitudinal side flaps. According to proposed method, blanks are moved along preset path to bending device and fed one by one between two relatively opposite and rotating towards each other notching rollers of notching and compressing device placed on way of feeding before bending device in direction along which blanks are moved each blank is combined with corresponding form and then blanks and forms are bent in bending device to make corresponding packets. Two rollers of notching and compressing device have mated profiles arranged and synchronized for contact with each side part of blank encounting on corresponding pair of adjacent flaps forming, at bending at right angle, inner layer of one side wall of packet, being made for forming at least one projection pointed inwards and formed on first flap of pair of flaps in contact with corresponding form of ready packet. Rollers are made to form at least one bend in one flap of pair of laps near the end adjacent to remaining flap which makes it possible to prevent overlapping of adjacent edges of two flaps at each side Thanks to it there is no necessity to correctly arranged two side walls of inner flaps relative to each other. EFFECT: facilitated production of cigarette packets. 12 cl, 4 dwg
Authors
Dates
2002-10-20—Published
1998-08-07—Filed