EP1571933B1 - Procede et appareil de remplissage a vitesse elevee de filtres composites de cigarettes - Google Patents

Procede et appareil de remplissage a vitesse elevee de filtres composites de cigarettes Download PDF

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Publication number
EP1571933B1
EP1571933B1 EP02788389A EP02788389A EP1571933B1 EP 1571933 B1 EP1571933 B1 EP 1571933B1 EP 02788389 A EP02788389 A EP 02788389A EP 02788389 A EP02788389 A EP 02788389A EP 1571933 B1 EP1571933 B1 EP 1571933B1
Authority
EP
European Patent Office
Prior art keywords
particulate matter
opening
cavities
filter
filter segments
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.)
Expired - Lifetime
Application number
EP02788389A
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German (de)
English (en)
Other versions
EP1571933A1 (fr
Inventor
Serge Veluz
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.)
Filtrona International Ltd
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Filtrona International Ltd
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 Filtrona International Ltd filed Critical Filtrona International Ltd
Publication of EP1571933A1 publication Critical patent/EP1571933A1/fr
Application granted granted Critical
Publication of EP1571933B1 publication Critical patent/EP1571933B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • A24D3/0212—Applying additives to filter materials
    • A24D3/0225—Applying additives to filter materials with solid additives, e.g. incorporation of a granular product
    • 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
    • A24D3/0208—Cutting filter materials

Definitions

  • This invention relates to a process and apparatus for use in the manufacturing of cigarette filters. More particularly, this invention relates to a process and an apparatus for high-speed filling of particulate matter in discrete cavities defined by adjacent individual filter plugs during the filter assembly operation.
  • the fill percentage of the cavities is very important. This is because, as the cigarette is placed into the mouth, it lies in a substantially horizontal plane. Thus, gravity draws the particulate matter down away from the top of the cavity. This creates an unprotected, unfiltered bypass above the particulate matter that does not inhibit the flow of smoke.
  • This bypass has on the filtering capacity of a filter is not yet appreciated but can possibly be disproportionately large compared to the linear proportion of the width of the bypass to the width of the filter element.
  • fluid flow principals dictate that fluid prefers to flow along a path of least resistance, thus indicating that the filtering efficiency of the particulate matter may be greatly reduced by the presence of any such pass through portion.
  • a prior art machine such as that described in U.S. Pat. No. 4,063,494 and 5,908,030 includes gravity-fed, wheel-shaped receiving magazines that receive filter segments laid out adjacent to one another in a spaced apart relationship on a paper carrier strip. The loaded strip is then brought into an assembly or guide channel and toward a filling area where the paper is formed on wheels into a receiving trough. As described in U.S. Pat. No. 4,015,514 to Nichols, a vacuum is applied across adjacent filter segments in an effort to promote the filling of the cavity. However, because both the spacing of the segments varies and the density of the cellulose acetate filters varies, it is impossible to fill the cavities with any consistency.
  • overfill of the cavity or the escape of the particulate from the cavities may cause the particulate to adhere to the outer garniture or the paper carrier strip and thus become embedded near the surface of the final product, leaving an unsightly stain or mark.
  • What is needed is a process of completely filling filter cavities in a commercially practicable manner. More specifically, what is needed is a process and an apparatus to rapidly fill active charcoal filter cavities at a rate exceeding 200 m/min.
  • a process of manufacturing composite filter stock is provided that includes several steps, as defined in claim 1.
  • a paper carrier strip or garniture feeds along a conveyor. Along one edge of the carrier strip, the paper is folded back against itself. Fibrous filter segments are then deposited on the carrying strip in spaced apart intervals. The spacing defines cavities between adjacent filter segments.
  • the carrier strip with the deposited filter segments is fed along a path of travel into an elongated guide or support chamber that substantially surrounds the circumference of the paper-enveloped segments and which leaves a narrow fill opening opposite a particulate filling opening that is elongated in the direction of motion of the carrying strip. Suction or a vacuum is concurrently applied adjacent the narrow opening, the suction increasing a downward momentum of a gravity feed stream of particulate matter and concurrently vacuuming away loose particulate matter.
  • the cavities are concurrently filled with the particulate matter over a length corresponding to a predetermined path of travel of the carrying strip.
  • the folded over edge is then unfolded and adhered to seal the fill opening.
  • a sealing strip seals the opening, thus encapsulating the filter segments and particulate matter.
  • the filter stock is then cut to length, the cutting being registered to create discrete composite filter segments.
  • filter cavities may be rapidly and completely filled with particulate matter such as charcoal.
  • the density of activated charcoal is controlled through the introduction of an inactive filler material.
  • FIG. 1 An apparatus 10 and a process 12 of manufacturing composite filter stock 14 having cavities 16 (best shown in FIG. 2) filled with particulate matter 20 is provided.
  • the cavity 20 is defined between two filter plugs 22, such as are traditionally used in making cellulose acetate filters.
  • the particulate matter 20 is preferably activated charcoal 24 but may be any other suitable active or inactive component, including sepiolite, silica gel, and nonactivated carbon. These particulate matter 20 can also include aromatic particulate.
  • the apparatus 10 capable of carrying out the process 12 is substantially that as shown in U.S. Pat. No. 4,223,597, wherein the process of filling, the filling part 12 of the '597 patent, and the receiving fixturing are improved.
  • the apparatus 10 includes a garniture or tool body 26, a strip conveyor 30, a funnel 32, a conveyor 34, a hopper 36 containing solid material 20, a separator chamber 40, and a vacuum power unit 42, connected together as described below with associated vacuum lines (e.g., 44, 46) and other connections.
  • a garniture or tool body 26 includes a strip conveyor 30, a funnel 32, a conveyor 34, a hopper 36 containing solid material 20, a separator chamber 40, and a vacuum power unit 42, connected together as described below with associated vacuum lines (e.g., 44, 46) and other connections.
  • a vacuum power unit 42 creates a vacuum in the separator chamber 40 by expelling air through exit port 92.
  • the cyclone separator and filter 56 filters dust from the air in which particulate material 20 is suspended, having been sucked through the vacuum lines 44 from the filling assembly 64.
  • This vacuum action evacuates any particulate that may be loose within the filling assembly 64, via evacuation slits 60 disposed on either side of the opening 62 to the cavities 16.
  • Particulate material 20 in the air falls to the bottom of the separation chamber 40 and finds its way into the hopper 36, through the sealed rotary air lock 52.
  • the rotary air lock 52 allows the separator chamber 40 and the hopper 36 to have substantially differing pressures in which the hopper's pressure is substantially ambient.
  • a feed line 54 provides the hopper with additional solid material 20 as needed.
  • the hopper 36 deposits particulate matter 20 on the conveyor belt 34.
  • the conveyor belt 34 conveys the solid material 20 from the hopper 36 to an area above the funnel 32 and then, into the funnel 32.
  • the funnel-shaped entry 33 of the funnel 32 having a wide opening gradually narrowing along the direction of flow provokes acceleration of the particulate matter 20.
  • the garniture 26 and strip conveyor 30 guide and position the strip 50 (shown in FIG. 3a ) in the filling assembly 64.
  • the funnel 32 directs solid material 20 into the cavities 16.
  • the solid material 20 is gravity fed from the conveyer belt 34 with, to a limited extent, vacuum assistance (via evacuation slits 60).
  • FIGs. 3a - 3e the filling assembly 64 of the apparatus 10 is shown.
  • cross-sections A and B are taken transverse to the line of motion and cross-section C is taken along the line of motion of the filter assembly 14.
  • the filling assembly 64 includes a lower garniture 66 and an upper garniture having a left portion 70 and a right portion 72.
  • a manifold 74 covers the garniture 26 and provides a mounting for the funnel 32, which has two end caps 76 and 80.
  • the manifold 74 defines vacuum passageways including the evaluation slit 60, channels 82 and 84, and exit ports 86 and 90.
  • the exit ports 86 and 90 connect to vacuum lines 44. The vacuum helps draw the particles 20 into each cavity 16 while at the same time sucking away particles that fall to either side of the opening 62 and on the exposed portion of the filter segment 22.
  • the process 12 includes several steps.
  • a paper ribbon or carrier strip 50 feeds along the strip conveyor 30.
  • the paper is folded back against itself, forming a fold 104.
  • fibrous filter segments 22 are deposited on the carrying strip 50 in spaced apart intervals. The spacing between filter segments 22 defines cavities 16 between adjacent filter segments.
  • the carrier strip 50 together with the deposited filter segments 22 are fed along a path 110 of travel into the garniture 26 which substantially surrounds the circumference of the segments 22 and which leaves a narrow fill opening 62, generally between 2 and 3 mm in width, opposite a particulate filling opening 112.
  • the filling opening 112 is elongated along the direction of motion 110, indicated by arrow Y in FIG. 3e, of the carrying strip 50.
  • a fourth step 114 suction or a vacuum is concurrently applied to the evacuation slits 60 on opposite sides adjacent the narrow opening 62, the suction, thus increasing a downward momentum of a gravity fed, vacuum-assisted stream of particulate matter 20 and vacuuming away loose particulate matter 20 (also known as overflow matter). This also helps prevent particles 20 from becoming laminated between an overlap area 116 (on which the fold 104 will adhere) and the fold when the fold 104 is brought back across the narrow opening 62 to seal the opening. Such trapped particulate matter 20 is considered a product defect and is reason to reject a production run.
  • the vacuumed away matter is then recycled, being repressurized as it passes through the airlock 52 after which it is deposited in the hopper 36. Thus, such defects are to be avoided.
  • a sixth step 120 the cavities 16 are concurrently filled with the particulate matter 20 over a predetermined length L (shown in FIG. 3e) corresponding to the path 110 of travel of the carrying strip 50.
  • the folded-over edge 104 is then unfolded and adhered to seal the fill opening 62.
  • a sealing strip as described in U.S. Pat. No. 4,225,597 seals the opening 62, thus encapsulating the filter segments 22 and particulate matter 20, creating a filter stock that exits the garniture 26.
  • the filter stock is then cut to length, the cutting being registered so as to cut through the filter segments 22, thus creating discrete composite filter segments which may be assembled together with a paper and tobacco to form a cigarette.
  • the fill percentage remains directly proportional to the flow rate of particulate matter, up to a fill percentage of 95%.
  • the process 12 permits the easy and accurate adjustment of the fill percentage to the demands of a customer.
  • the particulate matter 20 is made up of active matter (active charcoal 24) and inactive matter (e.g., an inert filler 25).
  • active matter active charcoal 24
  • inactive matter e.g., an inert filler 25.
  • the granulate shape, whether for active or inactive particulate matter, is very important as this characteristic affects the speed at which it can be accelerated toward the narrow opening of the cavity. In this manner, the amount of charcoal 24 in the filter can be varied and optimized, based on experimentation. Further, the affect that the active matter 24 has on the taste and the filtering properties of the cigarette can be controlled as well.
  • Controlling the amount of active charcoal 24 in this manner is necessary because it is not possible to reduce the size of the cavity 16, due to the variation in length of the opening 62 between filter elements 22 (i.e., the speed of the overall assembly operation is such that the filter elements 22 cannot be spaced apart on the carrier strip 50 very accurately and thus vary from an ideal relative position by as much as 0.5 mm in either direction).
  • active charcoal 24, the most widely used and available active filler is only available in a single state. The charcoal 24 cannot be ordered at an economical price in a state that is 50% active, for example. Still further, the percentage of active vs. inactive matter can be precisely controlled by pre-mixing the active and inactive matter prior to placing the mixture in the particulate hopper 40 of the apparatus 10.

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Filtering Materials (AREA)

Claims (8)

  1. Procédé de fabrication d'une matière pour filtres composites, comprenant les étapes suivantes:
    a) le dépôt de segments de filtre fibreux sur une bande porteuse à distance les uns des autres, définissant ainsi des cavités entre des segments de filtre adjacents ;
    b) l'envoi de la bande porteuse supportant les segments de filtre déposés le long d'un chemin de déplacement dans une chambre de support allongée qui entoure substantiellement la circonférence de la bande porteuse retenant les segments de filtre et qui laisse ouverte une ouverture de remplissage étroite en regard d'une ouverture de remplissage de particules d'un assemblage de remplissage, l'application d'un vide ou d'une succion, le remplissage des cavités et l'application d'une partie de fermeture qui encapsule les segments de filtre et les particules, caractérisé en ce
    c) que l'ouverture de remplissage étroite, étant en regard de plusieurs cavités en même temps, est allongée dans le sens du mouvement de la bande porteuse sur une longueur correspondant à un parcours de déplacement prédéterminé de la bande porteuse ;
    d) qu'on applique simultanément du vide ou une succion près de l'ouverture étroite, la succion augmentant ainsi une force d'impulsion vers le bas d'un courant gravitationnel d'alimentation en matière particulaire et élimine de la matière particulaire volante ;
    e) que les cavités sont remplies simultanément de la matière particulaire sur une longueur correspondant à une distance de déplacement prédéterminée de la bande porteuse.
  2. Procédé selon la revendication 1, dans lequel la succion est appliquée à deux entrées de succion, chacune disposée le long des bords opposés de l'ouverture étroite.
  3. Procédé selon la revendication 1, dans lequel la matière particulaire est un mélange de composants actifs et inactifs.
  4. Procédé selon la revendication 1, dans lequel la matière particulaire contient des particules aromatiques.
  5. Procédé selon la revendication 1, dans lequel les particules enlevées par succion sont recyclées.
  6. Procédé selon la revendication 1, dans lequel la matière des filtres est coupée à longueur à travers les segments de filtre afin de créer des segments discrets de filtre composite.
  7. Procédé selon la revendication 1, dans lequel l'assemblage de remplissage comprend une ouverture sous forme d'entonnoir dirigé vers le courant de la matière particulaire en arrivée, aidant ainsi à diriger et à accélérer la matière particulaire dans les cavités.
  8. Procédé selon la revendication 1, dans lequel l'ouverture de remplissage étroite présente une largueur comprise entre 2 et 3 mm.
EP02788389A 2002-12-19 2002-12-19 Procede et appareil de remplissage a vitesse elevee de filtres composites de cigarettes Expired - Lifetime EP1571933B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2002/005519 WO2004056221A1 (fr) 2002-12-19 2002-12-19 Procede et appareil de remplissage a vitesse elevee de filtres composites de cigarettes

Publications (2)

Publication Number Publication Date
EP1571933A1 EP1571933A1 (fr) 2005-09-14
EP1571933B1 true EP1571933B1 (fr) 2007-03-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02788389A Expired - Lifetime EP1571933B1 (fr) 2002-12-19 2002-12-19 Procede et appareil de remplissage a vitesse elevee de filtres composites de cigarettes

Country Status (12)

Country Link
EP (1) EP1571933B1 (fr)
JP (1) JP4203021B2 (fr)
KR (1) KR100952181B1 (fr)
CN (1) CN100581396C (fr)
AT (1) ATE357157T1 (fr)
AU (1) AU2002353368A1 (fr)
BR (1) BR0215988B1 (fr)
CA (1) CA2510186C (fr)
DE (1) DE60219083T2 (fr)
ES (1) ES2282499T3 (fr)
MX (1) MXPA05006632A (fr)
WO (1) WO2004056221A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3097795A1 (fr) 2015-05-26 2016-11-30 Hauni Maschinenbau GmbH Procede et dispositif de fabrication d'un filtre multi-segment
EP3097796A1 (fr) 2015-05-26 2016-11-30 Hauni Maschinenbau GmbH Procede et dispositif de fabrication de filtres multi-segments

Families Citing this family (19)

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US20060196513A1 (en) * 2004-12-30 2006-09-07 Philip Morris Usa Inc. Triple hopper max with built-in granulated cavity filling capability
US8047208B2 (en) * 2006-05-31 2011-11-01 Philip Morris Usa Inc. Double action filter assembly wheel with flipping wheel
US7849889B2 (en) * 2006-05-31 2010-12-14 Philip Morris Usa Inc. Applicator wheel for filling cavities with metered amounts of particulate material
US9204668B2 (en) * 2007-09-18 2015-12-08 Philip Morris Usa Inc. Cigarette filter
DE102009037685A1 (de) * 2009-08-18 2011-03-03 Hauni Maschinenbau Ag Vorrichtung und Verfahren zum Bilden eines Filterstrangs der tabakverarbeitenden Industrie
EP2401929A1 (fr) 2010-06-30 2012-01-04 Philip Morris Products S.A. Filtre pour article à fumer
EP2462821A1 (fr) 2010-12-10 2012-06-13 Philip Morris Products S.A. Article à fumer avec une enveloppe transparente gaufrée
EP2462820A1 (fr) 2010-12-10 2012-06-13 Philip Morris Products S.A. Article à fumer disposant d'un emballage extérieur avec une partie de découpe
EP2462822A1 (fr) 2010-12-13 2012-06-13 Philip Morris Products S.A. Article à fumer incluant des granules aromatiques
US20130085052A1 (en) * 2011-09-29 2013-04-04 R. J. Reynolds Tobacco Company Apparatus for Inserting Microcapsule Objects into a Filter Element of a Smoking Article, and Associated Method
HUE025010T2 (en) 2011-10-21 2016-04-28 Philip Morris Products Sa A smoking article with a labeled mouthpiece
WO2013068100A1 (fr) 2011-11-07 2013-05-16 Philip Morris Products S.A. Article à fumer présentant un contenu visible
WO2014012840A2 (fr) 2012-07-17 2014-01-23 Philip Morris Products S.A. Article à fumer incluant une enveloppe aromatisée avec motif en relief
WO2014012841A2 (fr) 2012-07-17 2014-01-23 Philip Morris Products S.A. Article à fumer comprenant une enveloppe aromatisée avec partie découpée
CA2872287A1 (fr) * 2012-08-01 2014-02-06 Celanese Acetate Llc Procedes de production de filtres et de tiges de filtres comprenant des masses poreuses et articles correspondants
BR112015021211A2 (pt) * 2013-03-14 2017-07-18 Celanese Acetate Llc aparelhos, sistemas e métodos associados para a formação de massas porosas orgânicas para filtros para fumar flavorizados
EP3082479A1 (fr) 2013-12-20 2016-10-26 Philip Morris Products S.A. Article pour fumeur comprenant des granules aromatisés comprenant une couche externe perméable
PL410571A1 (pl) 2014-12-16 2016-06-20 International Tobacco Machinery Poland Spółka Z Ograniczoną Odpowiedzialnością Segment wyrobu wielosegmentowego przemysłu tytoniowego, urządzenie do wytwarzania segmentów wyrobów wielosegmentowych, oraz sposób i urządzenie do zestawiania segmentów wałka wielosegmentowego
EP3669675A1 (fr) * 2018-12-17 2020-06-24 International Tobacco Machinery Poland Sp. z o.o. Procédé d'alimentation de perles et unité d'alimentation de perles

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3097795A1 (fr) 2015-05-26 2016-11-30 Hauni Maschinenbau GmbH Procede et dispositif de fabrication d'un filtre multi-segment
EP3097796A1 (fr) 2015-05-26 2016-11-30 Hauni Maschinenbau GmbH Procede et dispositif de fabrication de filtres multi-segments
DE102015108251A1 (de) 2015-05-26 2016-12-01 Hauni Maschinenbau Gmbh Verfahren und Vorrichtung zum Herstellen von Multisegmentfiltern
DE102015108252A1 (de) 2015-05-26 2016-12-01 Hauni Maschinenbau Gmbh Verfahren und Vorrichtung zum Herstellen eines Multisegmentfilters

Also Published As

Publication number Publication date
DE60219083D1 (de) 2007-05-03
EP1571933A1 (fr) 2005-09-14
JP2006510378A (ja) 2006-03-30
CN1731939A (zh) 2006-02-08
DE60219083T2 (de) 2007-12-13
WO2004056221A1 (fr) 2004-07-08
MXPA05006632A (es) 2005-12-14
ATE357157T1 (de) 2007-04-15
BR0215988B1 (pt) 2012-01-24
CN100581396C (zh) 2010-01-20
CA2510186C (fr) 2011-02-15
KR20050090127A (ko) 2005-09-12
ES2282499T3 (es) 2007-10-16
AU2002353368A1 (en) 2004-07-14
KR100952181B1 (ko) 2010-04-09
JP4203021B2 (ja) 2008-12-24
BR0215988A (pt) 2005-11-01
CA2510186A1 (fr) 2004-07-08

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