Method of producing filter-tipped cigarettes
AssigneeG.D Societa' Per Azioni
InventorsFiorenzo Draghetti, Salvatore Rizzoli
Life of this patent
Estimating the term…
Abstract
An orderly succession of first tobacco items, each including a double cigarette portion, is fed along a path along which the first items are cut into two cigarette portions which are separated by the insertion of a double filter to form a succession of second items, each including two cigarette portions separated by the double filter; each second item is rolled onto a respective strip connecting the two cigarette portions and the double filter to form a third item including a double cigarette; and the second items present, immediately upstream from the rolling station, a spacing approximately equal to but no less than the length of the respective strip.
Claims5
A method of producing filter-tipped cigarettes, the method comprising stages of feeding along a path (B) an orderly succession of first tobacco items (3), each comprising a double cigarette portion;
- cutting each first item (3), along said path (B), into a pair of cigarette portions (13, 14);
- axially parting the cigarette portions (13, 14) in each said pair;
- separating the cigarette portions (13, 14) in each said pair by the insertion of a double filter (18) to form a succession of second items (25), each consisting of two cigarette portions (13, 14) separated by the double filter (18);
- mating each second item (25) with a respective strip (30) of predetermined length L;
- at a rolling station (38), winding said strip (30) about part of the respective two cigarette portions (13, 14) and about the double filter (18) to form a third item (32) consisting of a double cigarette;
- and feeding the second items (25) to the rolling station (38) with a first spacing (P1) approximately equal to but no less than the length L of the respective strip (30);
- the first tobacco items (3) being fed along said path (B) with a second spacing (P2) wider than the first spacing (P1);
- and a spacing reduction being made along said path (B) upstream from the rolling station (38).
Dependencies are inferred from the claim text.