METHOD AND APPARATUS FOR MAKING A CONTINUOUS ROD OF FIBROUS MATERIAL Russian patent published in 2019 - IPC A24C5/26 

FIELD: tobacco industry.

SUBSTANCE: invention relates to a device and method for creating a continuous core of fibrous material in a tobacco industry machine. A method of manufacturing continuous rod (2) of fibrous material (100), for example, containing tobacco fibers, or fibers of filter material, or a plurality of filter elements that differ from each other, each of them contains filtering material fibers, in the tobacco industry machine, includes the steps of supplying continuous web (3) provided with ribbon (4) of thermofusible adhesive material to forming beam (7) through loading station (6) along determined path (P), which runs in advancement direction (D); transferring fibrous material (100) to continuous web (3) in loading station (6); wrapping by means of forming beam (7) of continuous web (3) around fibrous material (100), in wrapping position (8) for wrapping, to obtain continuous rod (2); heating ribbon (4) upstream from wrapping position (8) to maintain the adhesive material in melted state; wherein the step heating ribbon (4) of the adhesive material comprises the steps of emitting the radiant energy; the direction of the above radiated energy to ribbon (4) so that it falls directly on ribbon (4) and to heat said ribbon (4); however, the above step of emitting the radiated energy contains radiation of at least light beam (16), which is collimated or focused, and which is intended to hit essentially only above ribbon (4).

EFFECT: creation of a device and method of manufacturing a core of fibrous material, which are easily implemented and cheap; allow optimal heating of the hot melt ribbon of adhesive material, also using a large thickness web material, without a risk of damaging the web material itself; the use of the minimum amount of glue required for bonding, at the same time guaranteeing effective bonding and effective control of the temperature of the adhesive in any operating condition of the forming device and at any operating speed of the machine for the manufacture of smoking articles.

14 cl, 5 dwg