EP3363303B1 - Maschine zur herstellung mindestens eines kontinuirlichen strangs aus filtermaterial oder tabak - Google Patents

Maschine zur herstellung mindestens eines kontinuirlichen strangs aus filtermaterial oder tabak Download PDF

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Publication number
EP3363303B1
EP3363303B1 EP18156936.9A EP18156936A EP3363303B1 EP 3363303 B1 EP3363303 B1 EP 3363303B1 EP 18156936 A EP18156936 A EP 18156936A EP 3363303 B1 EP3363303 B1 EP 3363303B1
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European Patent Office
Prior art keywords
machine
openings
tobacco
filter material
continuous
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EP18156936.9A
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English (en)
French (fr)
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EP3363303A1 (de
Inventor
Gianluca Bertinelli
Massimo Sartoni
Luca Federici
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GD SpA
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GD SpA
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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
    • A24C5/1807—Forming the rod with compressing means, e.g. garniture
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A24D3/0233—Filter rod forming processes by means of a garniture

Definitions

  • This invention relates to a machine for making at least one continuous rod of filter material or tobacco.
  • the object of this invention is applicable both to cigarette making machines and filter making machines.
  • Machines for making continuous rods of tobacco generally involve the use of a substantially vertical duct which is fed from below with a continuous flow of tobacco particles and at the top end of which there is a suction conveyor belt on which a semi-finished, continuous stream of tobacco is formed.
  • Document US 2617426 discloses a rod formed for a cigarette machine.
  • the suction belt is adapted to feed the semi-finished, continuous stream of tobacco along a predetermined path defined by the conveyor itself to a preforming device, which produces a continuous stream, and then to a station for forming a continuous tobacco rod where a web of paper is wrapped around the continuous tobacco rod to form a continuous cigarette rod or cylinder which is then cut into individual cigarettes by a cutting device.
  • the semi-finished, continuous stream is suitably preformed and progressively compacted by the preforming device comprising a tile-shaped member which gives the advancing semi-finished, continuous stream the correct transverse dimension.
  • the tile-shaped member controls and guides the semi-finished, continuous stream, compressing it after it has been deposited on the web of paper with which the continuous tobacco rod will be made.
  • cigarette filters As is known, the production of cigarette filters, on the other hand, involves processing a continuous strip of filter material, for example cellulose acetate, obtained from a bale of compressed filter material.
  • filter material for example cellulose acetate
  • the strip is made to advance along a predetermined path through processing stations where it is stretched lengthways and crossways and then sprayed with chemical additives such as, for example, triacetin.
  • Preforming devices located at a specific station then preform the semi-finished, cylindrical streams of filter material to make continuous streams of filter material.
  • each preforming device comprises a substantially funnel shaped duct with an end portion having the shape of an oblong tile into which the semi-finished, continuous stream is fed.
  • the tile-shaped end portion progressively reduces the transverse cross section of the stream until it becomes a continuous stream of predetermined diameter.
  • the continuous stream Downstream of the funnel-shaped element, the continuous stream is channelled into the respective forming channel of a garniture tongue where the continuous streams advance in defined, parallel directions in such a way as to form continuous rods of filter material which a rotary cutting device then cuts into separate filter sticks.
  • Each filter stick may have the length of one or more filter tips, depending on requirements, which will be applied to the cigarettes in the filter tip attachment machine.
  • the device which preforms the semi-finished, continuous stream comprises an oblong tile-shaped member in which the semi-finished, continuous stream is channelled in order to progressively reduce the size of its transverse cross section until obtaining a continuous stream whose transverse cross section is substantially equal in diameter to the cigarettes or filters to be made.
  • the two machines have in common the fact of having a tile-shaped member designed to constrain and simultaneously compress the material (whether tobacco or filter material in the form of a semi-finished, continuous stream) into a forming channel of the garniture tongue so as to give it the transverse cross section of the size it needs to have in the garniture tongue.
  • the particles that come away are scattered in the surrounding atmosphere and can settle on the surface of the paper web opposite to the surface to be wrapped round the continuous stream to form the continuous rod.
  • the particles that come away might also result in the production of cigarettes which lose particles of tobacco or filter material (for example, particles of charcoal if the filters are made at least partly of charcoal).
  • particles of tobacco or filter material for example, particles of charcoal if the filters are made at least partly of charcoal.
  • the scattered particles might also settle in other zones of the cigarette, creating zones which are more dense or others which are incomplete, thus preventing the paper from being wrapped correctly in the forming channel or resulting in irregular or misshapen cigarettes with zones where the tobacco or filter material is not uniformly distributed.
  • the quality of the end product would thus be negatively affected by the failure to properly control or dispose of the scattered particles.
  • the technical purpose which forms the basis of this invention is to propose a machine for making at least one continuous rod of filter material or tobacco to overcome the above mentioned drawbacks of the prior art.
  • this invention has for an aim to provide a machine for making at least one continuous rod of filter material or tobacco and which allows controlling scattered particles, thereby improving the process by which the continuous streams are formed and preventing loose particles of filter material or tobacco from hindering the rod forming process.
  • Another aim of this invention is to provide a machine for making at least one continuous rod of filter material or tobacco and which allows improving the efficiency of the continuous rod production process.
  • the numeral 1 denotes in its entirety a machine for making at least one continuous rod of filter material or tobacco made according to the teachings of this invention and hereinafter referred to simply as machine 1.
  • the machine 1 is configured to make continuous rods 100 of filter material "F” or continuous rods 100 of tobacco "T", both suitable for use in making cigarettes.
  • cigarette is used to generally denote a plurality of products or smoking articles such as, for example, cigarettes, cigars, cigarillos and the like.
  • the machine 1 comprises a process station 2 for processing filter material "F” or tobacco “T” to make at least one semi-finished, continuous stream 101 of filter material “F” or tobacco “T". More specifically, the process station 2 is adapted to receive the filter material "F” or the tobacco "T" to be processed.
  • the process station 2 for processing filter material “F” is configured to process the filter material “F” along a predetermined path along which the filter material “F” is processed to make at least one semi-finished, continuous stream 101 of filter material "F". More specifically, the process station 2 for processing filter material “F” comprises forming means used to obtain at least one continuous strip of filter material "F” which is in turn fed to longitudinal and transverse stretching means. Downstream of the stretching means, the process station 2 comprises a chemical unit for chemically treating at least one continuous strip of filter material "F", where the at least one strip is sprayed with chemical additives such as, for example, triacetin.
  • the at least one strip Downstream of the chemical unit, the at least one strip is fed by a plurality of transfer rollers to pneumatic suction devices which transform the strip into a semi-finished, continuous stream 101 of filter material "F".
  • the process station 2 for processing tobacco "T” comprises, instead, a suction conveyor belt which is looped around end rollers, rotatable about parallel axes, and which has a lower section adapted to use suction to hold down particles of tobacco "T” coming from a vertical duct which is not illustrated and which is mounted under the lower section of the conveyor, to form a semi-finished, continuous stream 101 of tobacco "T".
  • the semi-finished, continuous stream 101 of tobacco "T” is suitable for being fed continuously by the lower section of the conveyor belt along a feed direction transverse to the axes of rotation of the end rollers.
  • the machine 1 comprises a preforming device 3 located downstream of the process station 2 and adapted to receive at least one semi-finished continuous stream 101 of filter material "F” or tobacco “T” in order to make at least one continuous stream 102 of filter material "F” or tobacco “T", as will become clearer as this description continues.
  • the machine 1 Downstream of the preforming device 3, the machine 1 then comprises a garniture tongue 4 adapted to receive the at least one continuous stream 102 of filter material "F” or tobacco “T” and configured to form at least one continuous rod 100 of filter material "F” or tobacco "T".
  • the garniture tongue 4 has a forming channel 5, illustrated in Figure 2 , along which the at least one continuous rod 100 is progressively formed as it feeds along a forming feed direction "X".
  • the machine 1 comprises a wrapping station 6 configured to feed into the forming channel 5 a continuous strip of paper "C” which is progressively wrapped by the garniture tongue 4 around the continuous stream 102 of filter material "F” or tobacco “T” to make the continuous rod of filter material "F” or tobacco "T".
  • a wrapping station 6 configured to feed into the forming channel 5 a continuous strip of paper "C” which is progressively wrapped by the garniture tongue 4 around the continuous stream 102 of filter material "F” or tobacco “T” to make the continuous rod of filter material "F” or tobacco "T".
  • the machine 1 preferably also comprises a cutting device 7 - a rotary cutting device, for example - configured to cut the continuous rod 100 into individual segments, not illustrated.
  • the garniture tongue 4 for forming the continuous rod 100 has an infeed station with an endless conveyor 8, one portion of which extends under the conveyor belt of the process station 2 for processing the tobacco "T” or under the outfeed station of the pneumatic suction devices of the strip of filter material "F".
  • the endless conveyor 8 of the garniture tongue 4 is adapted to run along a feed direction parallel to the forming feed direction "X", at least partly inside a groove 9 of the garniture tongue 4 defining the bottom surface 5a of the forming channel 5.
  • the endless conveyor 8 thus forces the continuous strip of paper "C”, if present, to be wrapped progressively round the continuous stream 102 of filter material "F” or tobacco "T".
  • the continuous stream 102 is fed to the garniture tongue 4 by the preforming device 3 which is interposed between the feed station 2 and the garniture tongue 4 itself.
  • the preforming device 3 comprises at least one oblong tile-shaped member 10, hereinafter referred to simply as tile 10, having a directrix "D" which makes a first defined angle " ⁇ " with the forming feed direction "X".
  • the first defined angle " ⁇ " defines the inclination of the tile 10 relative to the forming feed direction "X".
  • the first defined angle " ⁇ " between the directrix “D" of the tile 10 and the forming feed direction is between 0° and 2°, and still more preferably, 0.5°.
  • the tile 10 has an inside surface 10' which is configured to progressively reduce the transverse cross section of the semi-finished, continuous stream 101 feeding along it between an infeed portion 10a and an outfeed portion 10b of the tile 10 itself and to channel the stream into the forming channel 5.
  • the outfeed portion 10b of the tile 10 defines with the groove 9 the transverse cross section of the continuous rod 100 of filter material "F” or tobacco "T" to be made.
  • the machine 1 also comprises suction means for extracting particles of filter material "F” or tobacco "T" from the semi-finished, continuous stream 101 and the preforming device 3 has a plurality of openings 11 connected to the suction means to extract the particles.
  • the scattered particles of filter material "F” or tobacco “T” can be effectively extracted to prevent them from settling on other parts of the semi-finished, continuous stream 101 or of the continuous stream 102 while it is being wrapped in the paper "C".
  • These extracted particles are preferably sent to the process station 2 and recycled.
  • the plurality of openings 11 comprises first openings 12 made on the inside surface 10' of the tile 10 and the preforming device 3 comprises first suction ducts 13 leading to the first openings 12 and connected to the suction means.
  • first openings 12 are made to directly face the semi-finished, continuous stream 101 moving along the tile 10 and to immediately extract the particles which come away during the preforming process, thus guaranteeing that the resulting continuous stream 102 is of high quality.
  • the intensity of the suction through the first openings 12 is such as not to undo or loosen the bonds between the well adhered parts of the semi-finished, continuous stream 101 and only removes those particles or fibres of filter material "F” or tobacco "T” which are loose and not well adherent to the particles under them.
  • first openings 12 are preferably arranged in series along the directrix "D" so as to define at least one row of first openings 12.
  • the first openings 12 are arranged in series on the inside surface 10' in such a way that the semi-finished, continuous stream 101 passes sequentially by each one of them as it moves along in the tile 10.
  • the tile 10 has only one row of first openings 12.
  • the row of first openings 12 has five first openings 12.
  • the width of the first openings 12, measured along a direction perpendicular to the directrix "D", is smaller than the width of the tile 10.
  • the first openings 12 are positioned centrally on the inside surface 10'.
  • the plurality of openings 11 comprises second suction openings 14 made on at least one lateral outside surface 3a of the preforming device 3 above the tile 10 and the preforming device 3 comprises second suction ducts 15 leading to the second openings 14 and connected to the suction means.
  • the second openings 14 allow removing the scattered particles of filter material "F” or tobacco "T" which come away from the semi-finished, continuous stream 101 as it moves along the tile 10.
  • the second openings 14 are made on two lateral outside surfaces 3a of the preforming device 3 on opposite sides of the directrix "D", preferably symmetrically about the directrix "D".
  • the second openings 14 are preferably arranged in series along a direction parallel to the directrix "D" so as to define at least one row of second openings 14.
  • the second openings 14 define three distinct rows (14a, 14b, 14c) of second openings 14 located in parallel on the lateral outside surface 3a of the preforming device 3. More specifically, each row 14a, 14b, 14c of second openings 14 preferably has five second openings 14.
  • each second opening 14 of each row 14a, 14b, 14c is associated with a respective second duct 15a, 15b, 15c of the second ducts 15.
  • the second openings 14 are positioned at a height above the first openings 12 and, still more preferably, the second openings 14 are aligned with the first openings 12.
  • the length of the second openings 14, measure along a direction parallel to the directrix "D" is equal to the length of the first openings 12.
  • the first ducts 13 and the second ducts 15 converge in a main suction duct 16 connected to the suction means.
  • the preforming device 3 preferably comprises a guide portion 17, which is located upstream of the tile 10, at the infeed section 10a of the tile 10, and which urges the semi-finished, continuous stream 101 into the tile 10.
  • the guide portion 17 is provided with a connecting inside surface 17' which converges with the inside surface 10' of the tile-10 and has a respective directrix "D1" which makes a second defined angle ( ⁇ ) with the forming feed direction "X".
  • upstream of the tile 10 there is an element, also oblong and substantially tile shaped, which defines the guide portion 17, where the directrix "D1" is more inclined to the forming feed direction "X" in order to convey and facilitate entry of the semi-finished, continuous stream 101 into the tile 10, so as to prevent loosening up at the infeed portion 10a of the tile 10 itself.
  • the second defined angle " ⁇ " is thus greater than the first defined angle " ⁇ ".
  • This invention achieves the preset aims by overcoming the above mentioned disadvantages of the prior art and providing the user with a machine 1 which allows making excellent quality continuous rods 100 of filter material "F” or tobacco “T” obtained from continuous streams 102 formed in preforming devices 3 which allow effective removal of excess or scattered particles of filter material "F” or tobacco “T” from the semi-finished, continuous stream 101.
  • the plurality of openings 11 connected to the suction means thus allow providing an efficient, high-performing machine 1 for making at least one continuous rod 100 of filter material "F” or tobacco "T" which guarantees an end product of high quality.

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  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Claims (10)

  1. Maschine (1) zur Herstellung mindestens eines kontinuierlichen Strangs (100) aus Filtermaterial (F) oder Tabak (T), umfassend:
    - eine Verarbeitungsstation (2) zur Verarbeitung von Filtermaterial (F) oder Tabak (T), um mindestens einen halb fertigen kontinuierlichen Strom (101) aus Filtermaterial (F) oder Tabak (T) herzustellen;
    - eine Vorformungsvorrichtung (3), die nach der Verarbeitungsstation (2) angeordnet und ausgelegt ist, um den mindestens einen halb fertigen kontinuierlichen Strom (101) zu erhalten, um mindestens einen kontinuierlichen Strom (102) aus Filtermaterial (F) oder Tabak (T) herzustellen;
    - einen Formungsbalken (4), der ausgelegt ist, um den mindestens einen kontinuierlichen Strang (100) aus Filtermaterial (F) oder Tabak (T) zu formen, angeordnet nach der Vorformungsvorrichtung (3) und ausgelegt, um den mindestens einen kontinuierlichen Strom (102) zu erhalten, wobei der Formungsbalken (4) einen Formungskanal (5) aufweist, entlang dessen der mindestens eine kontinuierliche Strang (100) progressiv geformt wird, während der entlang der Formungszuführungsrichtung (X) zugeführt wird,
    wobei die Vorformungsvorrichtung (3) mindestens ein längliches fliesenförmiges Element (10) umfasst, das eine Mantellinie (D) aufweist, die einen ersten definierten Winkel (α) mit der Formungszuführungsrichtung (X) bildet, wobei das mindestens eine längliche fliesenförmige Element (10) eine innenseitige Oberfläche (10') aufweist, die ausgelegt ist, um den Querschnitt des halb fertigen kontinuierlichen Stroms (101), der daran entlang zwischen einem Zufuhrquerschnitt (10a) und einem Ausfuhrquerschnitt (10b) des länglichen fliesenförmigen Elements (10) zugeführt wird, progressiv zu reduzieren, und um den Strom in den Formungskanal (5) einzuleiten, wobei die Maschine (1) Saugmittel umfasst, um Partikel aus Filtermaterial (F) oder Tabak (T) aus dem halb fertigen kontinuierlichen Strom (101) zu extrahieren, und wobei die Vorformungsvorrichtung (3) eine Vielzahl an Öffnungen (11) aufweist, die mit den Saugmitteln verbunden sind, um die Partikel aus Filtermaterial (F) oder Tabak (T) zu extrahieren, wobei die Maschine (1) dadurch gekennzeichnet ist, dass die Vielzahl an Öffnungen (11) seitliche Saugöffnungen (14, 14a, 14b, 14c) umfasst, die auf mindestens einer seitlichen außenseitigen Oberfläche (3a) der Vorformungsvorrichtung (3) ausgebildet sind, befindlich oberhalb des länglichen fliesenförmigen Elements (10), wobei die Vorformungsvorrichtung (3) seitliche Saugleitungen (15, 15a, 15b, 15c) umfasst, die zu den seitlichen Öffnungen (14, 14a, 14b, 14c) führen und mit den Saugmitteln verbunden sind.
  2. Maschine (1) nach Anspruch 1, wobei die Vielzahl an Öffnungen (11) untere Öffnungen (12) umfasst, die auf der innenseitigen Oberfläche (10') des länglichen fliesenförmigen Elements (10) ausgebildet sind, wobei die Vorformungsvorrichtung (3) untere Saugleitungen (13) umfasst, die zu den unteren Öffnungen (12) führen und mit den Saugmitteln verbunden sind.
  3. Maschine (1) nach Anspruch 2, wobei die unteren Öffnungen (12) in Serie entlang der Mantellinie (D) angeordnet sind, sodass mindestens eine Reihe der unteren Öffnungen (12) definiert wird.
  4. Maschine (1) nach Anspruch 1, wobei die seitlichen Öffnungen (14, 14a, 14b, 14c) in Serie entlang einer Richtung angeordnet sind, die parallel zur Mantellinie (D) verläuft, sodass mindestens eine Reihe der seitlichen Öffnungen (14, 14a, 14b, 14c) definiert wird.
  5. Maschine (1) nach Anspruch 1 oder 4, wobei die seitlichen Öffnungen (14, 14a, 14b, 14c) auf zwei seitlichen außenseitigen Oberflächen (3a) der Vorformungsvorrichtung (3) an entgegengesetzten Seiten der Mantellinie (D), vorzugsweise symmetrisch um die Mantellinie (D), ausgebildet sind.
  6. Maschine (1) nach Anspruch 2, wobei die seitlichen Öffnungen (14, 14a, 14b, 14c) auf einer höheren Ebene als die unteren Öffnungen (12) angeordnet sind.
  7. Maschine (1) nach Anspruch 2, wobei die unteren Leitungen (13) und die seitlichen Leitungen (15, 15a, 15b, 15c) in eine Hauptsaugleitung (16) zusammenlaufen, die mit den Saugmitteln verbunden ist.
  8. Maschine (1) nach einem oder mehreren der vorhergehenden Ansprüche, wobei der erste definierte Winkel (α) zwischen der Mantellinie (D) des länglichen fliesenförmigen Elements (10) und der Formungszuführungsrichtung (X) zwischen 0° und 2°, vorzugsweise 0,5°, beträgt.
  9. Maschine (1) nach einem oder mehreren der vorhergehenden Ansprüche, wobei die Vorformungsvorrichtung (3) einen Führungsabschnitt (17) umfasst, der vor dem länglichen fliesenförmigen Element (10) am Zufuhrquerschnitt (10a) des länglichen fliesenförmigen Elements (10) angeordnet und ausgelegt ist, um den halb fertigen kontinuierlichen Strom (101) in das längliche fliesenförmige Element (10) zu forcieren, wobei der Führungsabschnitt (17) mit einer verbindenden innenseitigen Oberfläche (17') versehen ist, die mit der innenseitigen Oberfläche (10') des länglichen fliesenförmigen Elements (10) zusammenläuft und eine jeweilige Mantellinie (01) aufweist, die einen zweiten definierten Winkel (β) mit der Formungszuführungsrichtung (X) bildet.
  10. Maschine (1) nach Anspruch 9, wobei der zweite definierte Winkel (β) größer ist als der erste definierte Winkel (α).
EP18156936.9A 2017-02-17 2018-02-15 Maschine zur herstellung mindestens eines kontinuirlichen strangs aus filtermaterial oder tabak Active EP3363303B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102017000017840A IT201700017840A1 (it) 2017-02-17 2017-02-17 Macchina per la produzione di almeno un baco continuo di materiale filtrante o tabacco.

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EP3363303A1 EP3363303A1 (de) 2018-08-22
EP3363303B1 true EP3363303B1 (de) 2019-07-31

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900005856A1 (it) 2019-04-16 2020-10-16 Gd Spa Dispositivo e metodo per il trattamento di un semilavorato continuo dell’industria del tabacco
CN110326816B (zh) * 2019-07-05 2021-05-07 杭州电子科技大学 一种香烟滤嘴过滤装置

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Publication number Priority date Publication date Assignee Title
US2617426A (en) * 1944-12-02 1952-11-11 American Mach & Foundry Rod former tongue
US4015514A (en) * 1976-01-29 1977-04-05 Philip Morris Incorporated Apparatus for making cigarette filters
DE3390402T1 (de) * 1982-12-13 1985-01-10 Molins PLC, London Vorrichtung zum Herstellen eines Zigarettenfilterstranges
DE3640883A1 (de) * 1986-11-29 1988-06-09 Rhodia Ag Verfahren und vorrichtungen zum herstellen von tabakrauchfilterstaeben
US5163452A (en) * 1990-09-20 1992-11-17 R. J. Reynolds Tobacco Company Rod making apparatus for use in the manufacture of smoking articles

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* Cited by examiner, † Cited by third party
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None *

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EP3363303A1 (de) 2018-08-22

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