EP4074193A1 - Maschine und verfahren zur herstellung eines kontinuierlichen strangs der tabakindustrie - Google Patents

Maschine und verfahren zur herstellung eines kontinuierlichen strangs der tabakindustrie Download PDF

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Publication number
EP4074193A1
EP4074193A1 EP22167415.3A EP22167415A EP4074193A1 EP 4074193 A1 EP4074193 A1 EP 4074193A1 EP 22167415 A EP22167415 A EP 22167415A EP 4074193 A1 EP4074193 A1 EP 4074193A1
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EP
European Patent Office
Prior art keywords
belt
particles
roller
active branch
rotation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP22167415.3A
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English (en)
French (fr)
Other versions
EP4074193B1 (de
EP4074193A8 (de
Inventor
Fausto Mengoli
Giuliano Gamberini
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GD SpA
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GD SpA
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Publication of EP4074193A8 publication Critical patent/EP4074193A8/de
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Publication of EP4074193B1 publication Critical patent/EP4074193B1/de
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/14—Machines of the continuous-rod type
    • A24C5/18—Forming the rod
    • A24C5/1821—Forming the rod containing different tobacco mixtures, e.g. composite rods

Definitions

  • the present invention relates to a machine and to a method for producing a continuous rope of the tobacco industry, in particular a rope comprising a first aerosol-generating material and a second aerosol-generating material different from each other and arranged alternately along the development of the rope.
  • These continuous ropes are intended to form pieces with a first zone formed of particles of the first aerosol-generating material (for example, at one end) and a second zone, different from the first zone along the development of the piece, formed of particles of the second aerosol-generating material.
  • a first aerosol-generating material and "a second aerosol-generating material different from each other” we mean two materials that are different from each other and, for example, comprising tobacco and different additives.
  • a machine for producing a continuous rope of the tobacco industry for example, intended to form cigarettes, comprises a belt the active branch of which is subject to suction and movable in a conveying direction.
  • the machine further comprises a first feeder (“chimney”) arranged below the active branch of the belt to feed particles of the first aerosol-generating material so as to form a mass that is held by the active branch of the belt; and a second feeder arranged below the active branch of the belt and downstream of the first feeder along the feed direction, to feed particles of the second aerosol-generating material so as to form a mass that is held by the active branch of the belt.
  • a first feeder (“chimney") arranged below the active branch of the belt to feed particles of the first aerosol-generating material so as to form a mass that is held by the active branch of the belt
  • a second feeder arranged below the active branch of the belt and downstream of the first feeder along the feed direction, to feed particles of the second aerosol-generating material so as to form a mass that is held by the active branch of the belt.
  • the belt is arranged such that groups of particles of the first aerosol-generating material and groups of particles of the second aerosol-generating material are alternately deposited thereon according to a given profile.
  • the mass of particles is kept pressed on the belt by the suction during the advancement of the same belt, and adjusted to be uniform by suitable shaving assemblies arranged along the conveying direction.
  • the latter In order to avoid blockage during the advancement of the aerosol-generating material held by the branch of the belt, the latter has side walls that define a containment channel characterized by a transversal width increasing along the conveying direction, in the direction that goes from the first feeder to the second feeder (we are talking around differences of the order of a few millimetres).
  • it is difficult to balance this requirement without excessively reducing the receiving surface and the width of the channel at the first feeder, above all in the narrower part upstream, (which would not allow in itself an optimal reception of the particles) or excessively widening the surface and the final width (which is incompatible with the calibre of the smoking article to be manufactured). This would negatively affect the quality of the final product and would in fact hinder the continuous operation of the machine.
  • the patent application WO2020201682A1 represents the closest state of the art and describes an apparatus for manufacturing a rod of material that can be used to generate an aerosol.
  • the aim of the present invention is to overcome the above-mentioned drawback.
  • the machine and the method according to the present invention enable a continuous rope with particles of the first aerosol-generating material and the second aerosol-generating material to be manufactured which ensures the quality of the final product.
  • a machine for producing a continuous rope of the tobacco industry (shown schematically and partially) has been designated by 1.
  • the rope is of the type comprising particles 3 of a first aerosol-generating material and particles 4 of a second aerosol-generating material different from each other and arranged according to a predetermined sequence (and a predetermined profile) along the development of the rope.
  • the particles 3, 4 of the first and second materials comprise, for example, tobacco and different additives.
  • This type of machine allows to manufacture a continuous rope intended to form pieces of articles A of the tobacco industry (for example, cigarettes) that contain, on the inside thereof, two aerosol-generating materials arranged with a predetermined profile and given sequence.
  • articles of the tobacco industry we mean articles of any type pertaining to this sector, for example, traditional cigarettes or articles of the “heat not burn” (HNB) type which provide only for heating and not for combustion of the article itself.
  • HNB heat not burn
  • the represented smoking articles A have a longitudinal development, a first end P (or tip end) and a second end E (at which, in the illustrated example, a filter F is present).
  • the particles 3 of the first material are arranged at the first end P of the corresponding smoking article A with different profiles from each other, whereas in Figures 5C and 5D , the particles 3 of the first material are arranged at the second end E of the corresponding smoking article A with different profiles from each other.
  • the particles 4 of the second material are arranged at the first end P of the corresponding smoking article A with profiles different from each other, whereas in Figures 5A and 5B the particles 4 of the second material are arranged at the second end E of the corresponding smoking article A with profiles different from each other.
  • the machine 1 according to the invention comprises:
  • the machine 1 comprises a compactor unit 5 arranged along the conveying direction D between the first feeding zone 31 and the second feeding zone 41 and arranged to compact the particles 3 of the first material held on the active branch 20 of the belt 2 by acting on opposite lateral edges 21, 22 of the active branch 20 of the belt 2.
  • the compactor unit 5 only contacts the particles 3 of the first material and not the active branch 20 of the belt 2.
  • the compactor unit 5 compacts or acts by bringing the particles 3 of the first material closer together (pressing them together).
  • the compactor unit 5 allows to restore the compaction of the particles 3 of the first material before the feeding of the particles 4 of the second material.
  • this aspect avoids machine blockages, on the other hand, it guarantees an optimal quality of the final product.
  • the opposite lateral edges 21, 22 of the active branch 20 of the belt 2 comprise two side walls 21, 22.
  • the belt 2 is configured so that the particles 3 of the first material and particles 4 of the second material are held on the relative active branch 20 according to a predetermined sequence, in particular according to an alternation between particle masses of the two materials, first 3 and second 4 with a given profile (for example, so that the articles A such as those in Figures 5A-5D can be derived therefrom).
  • belt conveying means 2 having an active branch 20 subject to suction means that the active branch 20 may comprise through-holes (not visible in the attached Figures) sized so as to allow the passage of air, but not to allow the passage of the particles of aerosol-generating material.
  • the suction holes connected or connectable to the suction source, have a cross-sectional dimension of less than 1 mm, preferably less than 0.8 mm, whereas the particles of the (first and second) material have, for example, a cross-sectional dimension greater than 0.9 mm, even more preferably greater than 1 mm.
  • active branch 20 of the belt 2 we mean, in this context, the branch of the belt 2 which is operational, namely, which in this case holds the particles 3 of the first material and the particles 4 of the second material.
  • the two side walls 21, 22 mentioned above define a containment channel characterized by a transversal width L1, L2 increasing along the conveying direction D, in the direction that goes from the first feeder 30 to the second feeder 40 (we are talking around differences of the order of a few millimetres).
  • this increasing transverse width L1, L2 has been indicated by way of example in the case of two belts 2, 2', i.e. in a machine 1 for the simultaneous manufacturing of two continuous ropes (a situation that will be described in the following) .
  • this width varies from a value L1 of approximately 6 mm to a value L2 of approximately 8 mm.
  • the compactor unit 5 comprises a first element 51 and a second element 52 arranged opposite to each other along the conveying direction D.
  • the first element 51 and the second element 52 are rotatable respectively around at least one first rotation axis H and at least one second rotation axis K (see Figures 2 and 3 ) passing through the same, respectively in a first rotation direction V1 and in a second rotation direction V2, which are opposite to each other (indicated only in Figure 3 ).
  • first rotation axis H and the second rotation axis K are substantially vertical (in any case transverse, preferably perpendicular to the conveying direction D) (see Figure 2 , with reference to the first rotation axis H).
  • the first element 51 comprises a first roller 51 and the second element 52 comprises a second roller 52.
  • the first roller 51 and the second roller 52 are idle and are dragged into rotation in the first rotation direction V1 and in the second rotation direction V2, respectively, by the advancement of the active branch 20 of the belt 2 along the conveying direction D.
  • This embodiment is of particular constructive and functional simplicity. In fact, in this way, the synchrony between the (angular speed of) rotation of the first roller 51 and of the second roller 52 with the advancement (namely the advancement speed) of the active branch 20 of the belt 2 along the conveying direction D is guaranteed.
  • the first element 51 comprises a first roller 51 and the second element 52 comprises a second roller 52; furthermore, the compactor unit 5 further comprises motor means M (indicated only in Figure 2 ) for motorizing the first roller 51 and the second roller 52 in rotation in the first rotation direction V1 and the second rotation direction V2, respectively, during the advancement of the belt 2 along the conveying direction D.
  • motor means M indicated only in Figure 2
  • the (angular) speed of rotation of the first roller 51 and of the second roller 52 is synchronous with the advancement speed of the active branch 20 of the belt 2 along the conveying direction D.
  • the rotation speed of the first roller 51 and of the second roller 52 also follows any variations in the speed of the particles 3 of the first material along the conveying direction D (due, for example, to variations in production speed or to a different length of the pieces to be produced).
  • the first element 51 and the second element 52 of the compactor unit 5 respectively comprise a first motorized belt and a second motorized belt, arranged along the conveying direction D and having a straight and inclined (or slightly curved) profile so as to compact the particles 3 of the first material held on the active branch 20 of the belt 2 by acting on the opposite lateral edges 21, 22 of the active branch 20 of the belt 2.
  • the first element 51 and the second element 52 of the compactor unit 5 may have a profile conformed so as to receive any particles 3 of the first material that should detach from the active branch 20 of the belt 2 during compression.
  • the lateral surface of the first element 51 and of the second element 52 that contacts the particles 3 of the first material may be slightly inclined or curved to receive any particles 3 of the first material that should detach from the active branch 20 of the belt preventing them from falling downwards.
  • the belt conveying means 2 comprise at least a first belt and a second belt arranged in succession to each other along the conveying direction D; the first belt being arranged to receive the particles 3 of the first material from the first feeder 30 and the second belt being arranged to receive the particles 4 of the second material from the second feeder 40.
  • the compactor unit 5 is arranged between the first belt and the second belt.
  • the machine 1 further comprises at least one shaving assembly 6 (visible in Figures 1 and 2 ) arranged along the conveying path at a certain distance from the active branch 20 of the belt 2, upstream of the compactor unit 5.
  • the shaving assembly 6 is configured to determine a partial removal of the particles 3 of the first material held by the active branch 20 of the belt 2.
  • the shaving assembly 6 and the belt 2 may be movable in respective distancing and approaching, in order to vary the distance thereof.
  • the shaving assembly 6 is movable away from and towards the belt 2, which is fixed.
  • the belt 2 is movable away from and towards the shaving assembly 6, which is fixed.
  • the shaving assembly 6 and the belt 2 are both movable away from and towards each other in order to vary the relative distance.
  • this characteristic allows adjustment of the thickness of the mass of particles 3 of the first material held by the active branch 20 of the belt 2.
  • a further shaving assembly (not illustrated) may be provided, arranged along the conveying direction D at a certain distance from the belt 2, downstream of the second feeding zone 41, to determine partial removal of the particles 4 of the second material held by the active branch of the belt 2. Also in this case, the shaving assembly may be movable away from and towards the belt 2 in order to vary the relative distance thereof.
  • the machine 1 is arranged to produce simultaneously two continuous ropes of the tobacco industry, each comprising particles 3 of the first aerosol-generating material and particles 4 of the second aerosol-generating material different from each other and arranged according to a predetermined sequence along the development of the respective rope itself.
  • Reference is made to Figure 4 where two belts 2, 2' with corresponding side walls 21, 21', 22, 22' are visible.
  • the machine 1 will provide two compactor units (not visible from the section illustrated in Figure 4 ) each dedicated to compacting particles 3 of the first material held on the active branch of the corresponding belt 2, 2'.
  • the compactor unit associated with each belt 2, 2' has as small a dimension as possible: this can be achieved, for example, by using the first motorized belt and the second motorized belt mentioned above as the first element 51 and second element 52 of each compactor unit.
  • the two belts may be staggered from each other in height, and the first roller 51 and the second roller 52 as described above may be provided for each compactor unit 5 so as not to interfere with each other.
  • the present invention furthermore relates to a method for producing a continuous rope of the tobacco industry, the latter comprising particles 3 of a first aerosol-generating material and particles 4 of a second aerosol-generating material different from each other and arranged according to a predetermined sequence along the development of the rope.
  • the method comprises the steps of:
  • the method comprises the step of laterally compacting the particles 3 of the first material between the first feeding zone 31 and the second feeding zone 41 at opposite lateral edges 21, 22 of the active branch 20 of the belt 2.
  • the proposed method ensures the quality of the final product as it allows compaction of the particles 3 of the first material upstream of the feeding of the particles 4 of the second material, ensuring the correct flow of the particles without the formation of blockages.
  • the compacting step is carried out by means of at least a first element 51 and a second element 52 arranged opposite to each other along the conveying direction D.
  • the first element 51 and the second element 52 are rotatable respectively around at least one first rotation axis H and at least one second rotation axis K (see Figures 2 and 3 ) passing through the same respectively in a first rotation direction and in a second rotation direction V2, which are opposite to each other (indicated only in Figure 3 ) .
  • the compaction step is carried out by means of the step of bringing the first element 51 and the second element 52 into rotation in the first and second rotation directions V2, respectively.
  • the first element 51 comprises a first idle roller 51 and the second element 52 comprises a second idle roller 52.
  • the compacting step comprises the step of dragging the first roller 51 and the second roller 52 into rotation in the first rotation direction V1 and in the second rotation direction V2, respectively, with the advancement of the belt 2 (namely, its active branch 20) along the conveying direction D.
  • the first element 51 comprises a first motorized roller 51 and the second element 52 comprises a second motorized roller 52.
  • the compacting step comprises the step of controlling the rotational activation of the first roller 51 and the second roller 52 respectively in the first rotation direction V1 and in the second rotation direction V2 simultaneously with the advancement of the belt 2 (namely, its active branch 20) along the conveying direction D.
  • this specification reduces friction and promotes the sliding of the particles 3 of the first material along the conveying direction D.
  • the method is preferably implemented by means of the machine 1 as previously described. For further advantages, reference should be made to the foregoing description with reference to the machine 1.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Ropes Or Cables (AREA)
EP22167415.3A 2021-04-12 2022-04-08 Maschine und verfahren zur herstellung eines kontinuierlichen strangs der tabakindustrie Active EP4074193B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000009083A IT202100009083A1 (it) 2021-04-12 2021-04-12 Macchina e metodo per la produzione di un cordone continuo dell’industria del tabacco

Publications (3)

Publication Number Publication Date
EP4074193A1 true EP4074193A1 (de) 2022-10-19
EP4074193A8 EP4074193A8 (de) 2023-05-17
EP4074193B1 EP4074193B1 (de) 2024-02-21

Family

ID=77519449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22167415.3A Active EP4074193B1 (de) 2021-04-12 2022-04-08 Maschine und verfahren zur herstellung eines kontinuierlichen strangs der tabakindustrie

Country Status (3)

Country Link
EP (1) EP4074193B1 (de)
IT (1) IT202100009083A1 (de)
PL (1) PL4074193T3 (de)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182541A (en) * 1985-11-19 1987-05-20 Gd Spa Method for producing cigarettes containing at least two different tobacco mixtures
WO2020201682A1 (en) 2019-04-03 2020-10-08 British American Tobacco (Investments) Limited Apparatus for manufacturing a rod of aerosolisable material and method of manufacturing a rod of aerosolisable material

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2182541A (en) * 1985-11-19 1987-05-20 Gd Spa Method for producing cigarettes containing at least two different tobacco mixtures
WO2020201682A1 (en) 2019-04-03 2020-10-08 British American Tobacco (Investments) Limited Apparatus for manufacturing a rod of aerosolisable material and method of manufacturing a rod of aerosolisable material

Also Published As

Publication number Publication date
EP4074193B1 (de) 2024-02-21
EP4074193A8 (de) 2023-05-17
IT202100009083A1 (it) 2022-10-12
PL4074193T3 (pl) 2024-05-13

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