EP2818061A1 - Machine pour fabrication de filtre de cigarette - Google Patents

Machine pour fabrication de filtre de cigarette Download PDF

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Publication number
EP2818061A1
EP2818061A1 EP14173361.8A EP14173361A EP2818061A1 EP 2818061 A1 EP2818061 A1 EP 2818061A1 EP 14173361 A EP14173361 A EP 14173361A EP 2818061 A1 EP2818061 A1 EP 2818061A1
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EP
European Patent Office
Prior art keywords
main body
adjuster
machine
forming beam
forming
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.)
Withdrawn
Application number
EP14173361.8A
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German (de)
English (en)
Inventor
Massimo Sartoni
Gianluca Bertinelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD SpA
Original Assignee
GD SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GD SpA filed Critical GD SpA
Publication of EP2818061A1 publication Critical patent/EP2818061A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • A24D3/027—Multiple line manufacturing devices
    • 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
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming
    • 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

  • the present invention relates to a cigarette filter manufacturing machine.
  • the present invention may be used to advantage on a dual cigarette filter manufacturing machine, to which the following description refers purely by way of example.
  • a dual cigarette filter manufacturing machine comprises two forming beams for forming respective continuous filter rods; and a filtering material feed line for each beam.
  • the feed lines are supplied with the filtering material by a conveyor line, which extends between an input station of the feed lines and a store containing two bales of filtering material.
  • Respective round-section strands are unwound off the bales and fed along the conveyor line to a suction device located at the input station and designed to draw out the two strands crosswise into two flat-section strips.
  • the two strips Downstream from the suction device, the two strips are fed along the respective feed lines and through a pressing unit, a dilating device which blows air into the strips to increase their volume, and, finally, a processing unit where chemical substances are added to the strips to impart aroma and plasticity to the filtering material.
  • Each feed line is connected to the corresponding forming beam by a twisting unit which receives a strip from the feed line, twists the strip into a rope of filtering material, and feeds the filtering material rope onto a strip of gummed paper on the forming beam.
  • the twisting unit normally comprises a jet, into which the strip is fed to twist it and so form the filtering material rope.
  • air is blown into the jet, as described, for example, in US4522616A1 .
  • the paper strip is wound crosswise about the rope to form a continuous filter rod.
  • a control station checks the density of the filter rods, and a cutting head cuts the filter rods crosswise into respective successions of filter portions.
  • Number 1 in Figure 1 indicates as a whole a dual cigarette filter manufacturing machine.
  • Machine 1 comprises two forming beams 2a and 2b for forming respective continuous filter rods 3a and 3b; and, for each beam 2a, 2b, a respective filtering material feed line 4a, 4b.
  • Feed lines 4a and 4b are supplied with the filtering material by a conveyor line 5, which forms part of machine 1 and extends between an input station 6 of feed lines 4a, 4b and a store 7 containing two bales 8a and 8b of filtering material.
  • respective round-section strands 9a and 9b are unwound off respective bales 8a and 8b and pulled along conveyor line 5 by a roller traction unit 10a located at input station 6.
  • Conveyor line 5 comprises a guide device 11 located over bales 8a and 8b to guide strands 9a and 9b; and a draw-out device 12 located at input station 6, directly upstream from traction unit 10a, to draw out round-section strands 9a and 9b crosswise, by means of jets of compressed air, into respective flat-section strips 13a and 13b which are then fed to roller traction unit 10a.
  • the two strips 13a and 13b Downstream from traction unit 10a, the two strips 13a and 13b are fed, along respective feed lines 4a and 4b and in a substantially horizontal direction 14, through a pressing unit 15 comprising two roller traction units 10b and 10c similar to unit 10a.
  • the two strips 13a and 13b are fed, along respective feed lines 4a and 4b in direction 14, through a dilating device 16, which blows air into strips 13a, 13b to increase their volume, and then through a processing unit 17 where chemical substances (typically triacetine) are added to strips 13a, 13b to impart aroma and plasticity to the filtering material.
  • chemical substances typically triacetine
  • the two strips 13a and 13b are fed, along respective feed lines 4a and 4b in direction 14, through a roller traction unit 10d similar to units 10a, 10b, 10c and defining an output portion of feed lines 4a and 4b.
  • Feed lines 4a and 4b are connected to forming beams 2a and 2b by a twisting unit 18 located directly downstream from roller unit 10d. Twisting unit 18 receives strips 13a, 13b from feed lines 4a, 4b, twists strips 13a, 13b into two ropes of filtering material, and feeds the ropes of filtering material to forming beams 2a, 2b.
  • the filtering material rope On each forming beam 2a, 2b, the filtering material rope is fed onto a paper strip 19a, 19b gummed beforehand at a gumming station 20, and which is wound crosswise about the filtering material rope to form a continuous filter rod 3a, 3b.
  • a control station 21 checks the density of filter rods 3a, 3b, and a cutting head 22 cuts filter rods 3a, 3b crosswise into respective successions of filter portions (not shown).
  • twisting unit 18 comprises a box body 23 fixed to the frame of machine 1 and fitted inside with two side by side twisting lines 24a, 24b, which converge to reduce the distance between the two ropes of filtering material.
  • Each twisting line 24 comprises an input jet 25 into which the strip 13 from feed line 4 is fed; and an output jet 26, through which the filtering material rope is fed to an insertion finger 27 (shown schematically in Figure 3 ) terminating in forming beam 2.
  • Each input jet 25 has a straight central axis of symmetry 28 parallel to the travelling direction of strip 13 from feed line 4.
  • Each output jet 26 has a straight central axis of symmetry 29, which slopes slightly with respect to both the travelling direction of the filtering material rope from input jet 25, and the travelling direction of the filtering material rope along forming beam 2.
  • a tubular diverter 30 is interposed between each input jet 25 and output jet 26, and has a curved portion for diverting the travelling direction of the filtering material rope from input jet 25.
  • Each diverter 30 is preferably fitted directly to the outlet of input jet 25.
  • each jet 25, 26 comprises a tubular body 31, which has a sharply tapering initial portion (i.e. in which the diameter of the feed channel decreases gradually), and a cylindrical intermediate portion (i.e. with a constant-diameter feed channel).
  • Each jet 25, 26 also comprises a further tubular body 32 downstream from tubular body 31, and which flares slightly (i.e. in which the diameter of the feed channel increases gradually).
  • Tubular body 31 is screwed into tubular body 32, and remains slightly detached from tubular body 32 to define, between an outer surface of tubular body 31 and an inner surface of tubular body 32, an annular airflow channel 33 which terminates at a number of blow holes 34 formed through the inner surface of the cylindrical intermediate portion of tubular body 31.
  • Tubular body 32 has a number of through feed channels 35, through which, in use, compressed air is fed into annular channel 33 and through blow holes 34 into the feed channel of tubular body 31.
  • Blow holes 34 of input jet 25 are oriented with respect to central axis of symmetry 28 so that the air jets have both an axial component (i.e. parallel to central axis of symmetry 28) and a radial component (i.e. perpendicular to central axis of symmetry 28).
  • the axial component of the air jets is predominant, in that it also serves to push the filtering material through input jet 25, while the radial component simply serves to produce a swirling movement of the air jets.
  • Blow holes 34 of output jet 26 are oriented with respect to central axis of symmetry 29 so that the air jets only have an axial component (i.e. parallel to central axis of symmetry 29) to exert maximum thrust on the filtering material.
  • each annular channel 33 can be adjusted by screwing or unscrewing tubular body 31 with respect to tubular body 32 to adjust air speed and flow through blow holes 34.
  • box body 23 is substantially sealed, and only has compressed-air relief openings 37 located in a mid-portion of box body 23 and shielded against direct cast-off.
  • each output jet 26 is fitted with a perforated, slightly conical tubular body 38 having a number of through holes 39 and located directly downstream from output jet 26.
  • Through holes 39 are preferably only formed in the top part of each tubular body 38 to avoid directing air jets downwards, i.e. onto forming beam 2.
  • each insertion finger 27 is located directly downstream, and a given distance, from corresponding output jet 26. In a different embodiment not shown, there is no distance between output jet 26 and insertion finger 27 (i.e. output jet 26 terminates precisely at the inlet of insertion finger 27). In another embodiment, output jet 26 is inserted partly inside insertion finger 27.
  • each insertion finger 27 comprises a tapering tubular main body 40 (i.e. in which the diameter of the feed channel decreases gradually) which terminates inside forming beam 2. More specifically, each main body 40 connects seamlessly to forming beam 2, i.e. the structure of main body 40 contacts the structure of forming beam 2 directly with no gaps (as shown clearly in Figure 7 ), so the outlet of each main body 40 coincides perfectly and seamlessly with the inlet of forming beam 2.
  • a tubular adjuster 41 extending about a central axis of symmetry A is inserted inside an inlet opening of main body 40.
  • Adjuster 41 remains slightly detached from main body 40 to define, between an outer surface of adjuster 41 and an inner surface of main body 40, an annular airflow channel 42 which terminates inside main body 40, at an annular gap 43.
  • annular channel 42 and annular gap 43 at the end of annular channel 42 are bounded externally by an inner surface of main body 40, and internally by an outer surface of adjuster 41.
  • Annular channel 42 originates at an annular chamber 44 surrounding adjuster 41, and terminates in annular gap 43 which is located inside main body 40, at one end of adjuster 41, to direct a compressed-air jet of pressure P into main body 40.
  • Annular chamber 44 is connected by a radial pipe to a socket 45 connected to a compressed-air supply of pressure P.
  • compressed-air pressure P ranges between 0.05 and 0.4 MPa (i.e. between 0.5 and 4 bars) and is preferably 0.22 ⁇ 0.01 MPa (i.e. 2.2 ⁇ 0.1 bar).
  • Each annular channel 42 is oriented so the air jet has both an axial and a radial component.
  • the axial component of the air jet is predominant, in that it also serves to push the filtering material through main body 40, while the radial component simply serves to produce a swirling movement of the air jet.
  • the width W of annular gap 43 ( Figure 9 ), i.e. the width W of the airflow section through annular gap 43, of each annular channel 42 can be adjusted by moving adjuster 41 closer to/away from main body 40 (i.e. by inserting/withdrawing adjuster 41 inside/from main body 40).
  • adjuster 41 is fixed to main body 40 by one or more screws 46; and an interchangeable spacer ring 48 is interposed between main body 40 and an outer edge 47 of adjuster 41 to set the distance between main body 40 and adjuster 41, and therefore the width W of annular gap 43 of annular channel 42.
  • the width W of annular gap 43 i.e.
  • the width of the airflow section ranges between 0.02 and 1 mm, and is preferably 0.1 ⁇ 0.05 mm. More specifically, the width W of annular gap 43, i.e. the width of the airflow section through annular gap 43, ranges between 0.05 and 0.3 mm and is preferably 0.1 ⁇ 0.05 mm.
  • each main body 40 has a number of aeration holes downstream from adjuster 41 and formed solely in a top portion of main body 40.
  • adjuster 41 has an inlet opening 49 and an outlet opening 50; and an end portion of adjuster 41 tapers slightly (i.e. the diameter of the feed channel decreases gradually) so inlet opening 49 is slightly larger in diameter than outlet opening 50.
  • an inlet funnel 51 is fitted (e.g. joint-connected) inside each adjuster 41.
  • An end portion of inlet funnel 51 has a constant inside diameter D, and is inserted inside inlet opening 49 of adjuster 41.
  • inlet funnel 51 comprises a sharply tapering initial portion (i.e. in which the diameter of the feed channel decreases gradually) with the aeration holes; and the non-tapering (i.e. constant-diameter) end portion of inside diameter D and inserted inside inlet opening 49 of adjuster 41.
  • diameter D of the end portion of inlet funnel 51 ranges between 10 and 45 mm and is preferably 25 ⁇ 1 mm.
  • each forming beam 2 has a start end 52 located beneath insertion finger 27 (i.e. beneath main body 40 of insertion finger 27).
  • a distance L1 measured longitudinally (i.e. parallel to the travelling direction of the filtering material along machine 1), exists between the centre of outlet opening 50 of adjuster 41 and the start end 52 of forming beam 2.
  • distance L1 between the centre of outlet opening 50 of adjuster 41 and the start end 52 of forming beam 2 ranges between 1.5 and 7.5 mm and is preferably 4.5 ⁇ 0.5 mm.
  • main body 40 of each insertion finger 27 has a terminating end 54 which, as stated, rests seamlessly on forming beam 2.
  • a distance L2 measured longitudinally (i.e. parallel to the travelling direction of the filtering material along machine 1), exists between the centre of outlet opening 50 of adjuster 41 and the terminating end 54 of main body 40 of insertion finger 27.
  • distance L2 between the centre of outlet opening 50 of adjuster 41 and the terminating end 54 of main body 40 of insertion finger 27 ranges between 67 and 127 mm and is preferably 97 ⁇ 5 mm.
  • each forming beam 2 extends substantially lower than main body 40 of insertion finger 27, and commences at start end 52 beneath insertion finger 27 (i.e. beneath main body 40 of insertion finger 27); and each forming beam 2 comprises a top part positioned contacting, and forming a natural seamless continuation of, main body 40 of insertion finger 27.
  • a suction device 55 is inserted between each output jet 26 and corresponding insertion finger 27 to generate suction around the whole of filter rod 3 and collect any substances released by filter rod 3.
  • Suction device 55 is especially useful when a feed device is provided upstream from twisting unit 18 to feed a solid powdered and/or granular additive (typically, but not exclusively, active carbon). In fact, part of the solid additive in the filtering material is also released during twisting as a result of the compressed-air jets and, unless collected by suction device 55, tends to foul the component parts of machine 1.
  • a different embodiment not shown also has a further suction device inside box body 23.
  • machine 1 described above is a single-rod machine, and so comprises one forming beam 2 for forming one continuous filter rod 3; and one filtering material feed line 4.
  • twisting unit 18 comprises one twisting line 24 with an input jet 25, output jet 26, and insertion finger 27 as described above.
  • machine 1 described above may be a three- or four-rod machine, and so comprise three or four forming beams 2 for respectively forming three or four continuous filter rods 3; and three or four filtering material feed lines 4.
  • And twisting unit 18 comprises three or four twisting lines 24, each with an input jet 25, output jet 26, and insertion finger 27 as described above.
  • Machine 1 described has numerous advantages.
  • machine 1 described produces a rope of highly uniform filtering material. So, to achieve the desired (nominal) filter performance, the minimum possible amount of filtering material is used, thus reducing production cost. In other words, to produce filters of a given (nominal) performance, machine 1 described employs the minimum possible amount of filtering material, i.e. with no waste.
  • filter performance is normally defined in terms of the pressure drop across the filter when subjected to a given calibrated air stream.
  • machine 1 described is cheap and easy to produce by simply involving fast, non-structural alterations to a similar known machine.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
EP14173361.8A 2013-06-21 2014-06-20 Machine pour fabrication de filtre de cigarette Withdrawn EP2818061A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000314A ITBO20130314A1 (it) 2013-06-21 2013-06-21 Macchina per la produzione di filtri per sigarette

Publications (1)

Publication Number Publication Date
EP2818061A1 true EP2818061A1 (fr) 2014-12-31

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Family Applications (1)

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EP14173361.8A Withdrawn EP2818061A1 (fr) 2013-06-21 2014-06-20 Machine pour fabrication de filtre de cigarette

Country Status (3)

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EP (1) EP2818061A1 (fr)
DE (1) DE202014010449U1 (fr)
IT (1) ITBO20130314A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2666307C2 (ru) * 2014-03-28 2018-09-06 Джапан Тобакко Инк. Устройство для изготовления сигарет с фильтром, способ изготовления сигарет с фильтром и сигарета с фильтром

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522616A (en) 1982-03-10 1985-06-11 Celanese Corporation Method and apparatus for forming cigarette filter rods
EP0546519A2 (fr) * 1991-12-09 1993-06-16 Mitsubishi Rayon Co., Ltd Jet d'air pour la production de bouchons filtrants pour cigarettes
GB2265298A (en) 1992-03-26 1993-09-29 Koerber Ag Method of and machine for making filters for rod-shaped smokers' products
WO2005058079A1 (fr) 2003-11-25 2005-06-30 Hauni Maschinenbau Aktiengesellschaft Dispositif pour preparer une meche de filtre et dispositif de production de filtres
WO2007087848A2 (fr) 2006-01-12 2007-08-09 G.D. Società per Azioni Dispositif de déviation, machine comportant un tel dispositif de déviation et procédé de transport et de déviation d'au moins un écheveau de mèche pour filtre
EP1917870A2 (fr) * 2006-10-31 2008-05-07 G.D. S.p.A Machine de fabrication de filtres pour produits de tabac
DE202012003924U1 (de) * 2011-04-18 2012-06-14 G.D Società per Azioni Kompaktier- oder Verdichtergruppe für eine Maschine zur Produktion von Zigarettenfiltern

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4522616A (en) 1982-03-10 1985-06-11 Celanese Corporation Method and apparatus for forming cigarette filter rods
EP0546519A2 (fr) * 1991-12-09 1993-06-16 Mitsubishi Rayon Co., Ltd Jet d'air pour la production de bouchons filtrants pour cigarettes
GB2265298A (en) 1992-03-26 1993-09-29 Koerber Ag Method of and machine for making filters for rod-shaped smokers' products
WO2005058079A1 (fr) 2003-11-25 2005-06-30 Hauni Maschinenbau Aktiengesellschaft Dispositif pour preparer une meche de filtre et dispositif de production de filtres
WO2007087848A2 (fr) 2006-01-12 2007-08-09 G.D. Società per Azioni Dispositif de déviation, machine comportant un tel dispositif de déviation et procédé de transport et de déviation d'au moins un écheveau de mèche pour filtre
EP1917870A2 (fr) * 2006-10-31 2008-05-07 G.D. S.p.A Machine de fabrication de filtres pour produits de tabac
DE202012003924U1 (de) * 2011-04-18 2012-06-14 G.D Società per Azioni Kompaktier- oder Verdichtergruppe für eine Maschine zur Produktion von Zigarettenfiltern

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2666307C2 (ru) * 2014-03-28 2018-09-06 Джапан Тобакко Инк. Устройство для изготовления сигарет с фильтром, способ изготовления сигарет с фильтром и сигарета с фильтром

Also Published As

Publication number Publication date
ITBO20130314A1 (it) 2014-12-22
DE202014010449U1 (de) 2015-11-10

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