EP0059042B1 - Articles à fumer avec filtres et appareil pour leur production - Google Patents

Articles à fumer avec filtres et appareil pour leur production Download PDF

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Publication number
EP0059042B1
EP0059042B1 EP82300637A EP82300637A EP0059042B1 EP 0059042 B1 EP0059042 B1 EP 0059042B1 EP 82300637 A EP82300637 A EP 82300637A EP 82300637 A EP82300637 A EP 82300637A EP 0059042 B1 EP0059042 B1 EP 0059042B1
Authority
EP
European Patent Office
Prior art keywords
intermediate sheet
strip
adhesive
tipping paper
filter rod
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
Application number
EP82300637A
Other languages
German (de)
English (en)
Other versions
EP0059042A1 (fr
Inventor
Michael Bruno Lauenstein
Hans Jordi
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.)
Philip Morris Products SA
Original Assignee
Fabriques de Tabac Reunies SA
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 Fabriques de Tabac Reunies SA filed Critical Fabriques de Tabac Reunies SA
Publication of EP0059042A1 publication Critical patent/EP0059042A1/fr
Application granted granted Critical
Publication of EP0059042B1 publication Critical patent/EP0059042B1/fr
Expired 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 OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution

Definitions

  • the invention relates to elongated smoking articles, for example cigarettes, having a filter at the mouth end of a tobacco rod, the filter being in the form of a rod surrounded by a tipping material, such as paper, suitable for contact with the lips, which overlaps a wrapper or cover surrounding the tobacco rod, and having at its periphery channels for secondary or dilution air covered by the tipping material.
  • a tipping material such as paper
  • the invention also relates to apparatus for producing such an article.
  • An article of this type is known from Df­-OS ⁇ 2 849 904 in which the filter rod is surrounded by a tubular element in the periphery of which are formed grooves extending to the mouth end and constituting channels for secondary air admitted through cooperating openings in the tipping paper. Through these openings and channels, secondary air is sucked in to dilute the smoke when the article is smoked.
  • the filter rod is peripherally impermeable to air and that between the tipping material and the filter rod is interposed an intermediate sheet of substantially impermeable material provided with slits extending from the mouth end but occupying only part of the area of the intermediate sheet, thereby forming channels which communicate with perforations 4n the tipping material.
  • the intermediate sheet employed according to the invention for providing channels can be applied in essentially the same way as the tipping paper of conventional cigarettes, so that it is sufficient to provide for the intermediate sheet an additional means for supply and adhesive application, corresponding to that provided for the tipping paper.
  • the channels formed by the slits have the same cross-sectional depth throughout. They will not be completely compressed, and thus made ineffective, by the lip pressure of the smoker because they still remain open in the areas along their lateral cut edges, even in the case of strong lip pressure.
  • the edges of the slits should be cut perpendicular to the plane of the sheet. This result is the opposite to that with channels formed by grooves in the filter rod because, unless it is possible to accept considerable additional cost, the grooves must be of V or U-shaped cross-section and therefore cannot withstand strong lip pressure in the edge areas and, in certain circumstances, may be unintentionally blocked and made ineffective.
  • the intermediate sheet In order to provide channels with an adequate cross-section, the intermediate sheet must be correspondingly thick.
  • the preferred thickness is from 0.1 to 0.6 mm. If such an intermediate sheet is inserted without special precautions, a shoulder forms at the end of the sheet remote from the mouth. However, this can easily be avoided by a construction in which the intermediate sheet extends from the mouth end of the filter rod to the end remote from the mouth, with the exception of a tolerance gap, and in which the filter rod together with the adherent intermediate sheet has the same cross-section as the tobacco rod.
  • the channels have dimensions whereby the slits are uniformly distributed round the periphery of the filter rod, extend in the longitudinal direction of the filter rod, and occupy from 25 to 60% of the filter rod periphery at the mouth end and from 40 to 80% of the total filter rod length.
  • Apparatus for producing elongated smoking articles of the aforementioned type can easily be converted to produce articles according to the invention, and equipment of the type already used for supplying the tipping paper can be correspondingly used for the intermediate sheet.
  • the apparatus accordingly includes means for supplying and advancing double-width intermediate sheet material, staming or punching means arranged to make slits in the double-width intermediate sheet, 'a first adhesive applicator to apply adhesive to the side of the intermediate sheet to be stuck to the tipping paper combining means to assemble the intermediate sheet material into the tipping paper, with their longitudinal axes coincident, to form a combined strip, a second adhesive applicator to apply adhesive to the double-width combined strip.
  • the perforations for air in the tipping paper are, in the preferred manner, holes communicating with the channels then the perforations can be made initially in the tipping paper strips, or an appropriate stamping or other perforating means can be provided for the strips.
  • the intermediate sheet should enclose the filter rod with a butt joint and that only the tipping paper should overlap round the rod.
  • intermediate sheet cutting means are disposed immediately before the combining means to cut the intermediate sheet strip into intermediate sheet portions, the combining means is adapted to apply the intermediate sheet portions at spaced intervals to the tipping paper strip, and that the tipping paper cutting means is synchronised to cut along the edge of each intermediate sheet portion and leave an overlapping edge of the tipping paper strip at the appropriate edge of the resulting cut portion of the combined strip.
  • the first adhesive applicator has an applicator roller which peripherally rolls on the surface of the double-width intermediate sheet strip to be coated with adhesive, and is rotated synchronously with movement of the intermediate sheet strip in such a way that adhesive free zones on the roller contact the slits and prevent the filling thereof with adhesive.
  • a filter rod is permeable to air in the axial direction and is enclosed by an air impermeable wrapper 3. Outside the wrapper 3, the filter rod 1 is surrounded by an intermediate sheet 4, which is made from air impermeable material and has peripherally distributed slits 6 to 10 (Fig. 3) extending in the axial direction.
  • These slits form channels in the finished article, e.g. the slits 6 and 10 form channels 11 and 12 (Figs. 1 and 2).
  • These channels may extend over only 60% but preferably about 70% of the total length 13 of the filter rod 1 and therefore do not reach the end 14 remote from the mouth.
  • the channels occupy 45% of the periphery of the filter rod and are therefore somewhat narrower than the remaining portions of the sheet.
  • the intermediate sheet 4 is preferably 0.2 mm thick. The lateral edges of the slits are cut perpendicular to the plane of the intermediate sheet so that the resulting channels have the cross-section of a curved rectangle, as can be seen in Fig. 2. With the exception of a tolerance gap 15, the intermediate sheet 4 extends up to the end of 14 of the filter rod 1 remote from the mouth and surrounds the filter rod with a butt joint 16, i.e. without overlap.
  • a tobacco rod 17 At the end of the filter rod remote from the mouth is fitted a tobacco rod 17, the cross-section 18 of which, including its air impermeable wrapper 19, is the same as the total cross-section 20 of the filter rod 1 and the intermediate sheet 4.
  • the filter rod, including the wrapper 3 thus has a cross-section which is smaller than the cross-section of the tobacco rod by an amount depending on the thickness of the intermediate sheet.
  • the profile of the tobacco rod 17, including the wrapper 20 is continued without a shoulder by the filter rod 1 together with the intermediate sheet 4.
  • a tipping paper 21, which surrounds the filter rod with an overlap 22, extends the entire length of the filter rod and overlaps at 23 an adjacent region of the tobacco rod, thereby combining the parts into a single article in the form of a cigarette.
  • the tipping paper strip shown in Fig. 3 it is the projecting region 24 of the tipping paper that covers the tolerance gap 15 and the adjacent region of the tobacco rod.
  • the tipping paper 21 contains groups of air holes 26, which communicate with the slits and, in the finished cigarette, form inlets for the flow of secondary air into the channels.
  • the tipping paper 21 is impermeable to air.
  • the intermediate sheet 4 is stuck to the filter rod 1 on the side and the tipping paper 21 on the other side.
  • the channels 11 and 12 are open for the flow of secondary air through the corresponding groups of air holes and for the escape of such air at the mouth end, but for the rest are completely airtight. They can if desired be narrowed by the smoker's lips by pressing in the tipping paper in order to reduce the dilution ratio, but cannot be completely closed unintentionally.
  • a reel 20 supplies a double-width tipping paper strip 31.
  • the strip 31 passes round a guide roll 32, where it meets cut portions of the intermediate sheet material and then passes to cutting means 33 where it is cut into portions, which then pass to the manufacture of cigarettes, as hereinafter described.
  • a double-width strip 35 of intermediate sheet material is supplied by a reel 36, from which it is removed by driven rolls 37.
  • the double-width strip 35 passes through a punching device 38 where slits are punched in it as shown at 6 to 10 in Fig. 3.
  • Adhesive is applied to the upper surface of the punched strip 35 by a first adhesive applicator 40.
  • the strip 35 is then cut by a rotary cutter 43 into intermediate sheet portions 44, so dimensioned that each portion can surround a double-length filter rod with a butt joint as shown at 16 in Fig. 2.
  • combining means 45 which includes the guide roll 32 and is positioned directly behind the intermediate sheet cutting device 43, the portions 44 are brought together with the double-width tipping paper strip 31, to which the portions adhere to form a combined strip 47.
  • the rate of advance of the intermediate sheet strip 35 is approximately 10% lower than the rate of advance of the tipping paper strip 31.
  • a suction roller 46 forming part of the combining means 45, rotates at a circumferential speed corresponding to the speed of passage of the tipping paper strip 31.
  • the intermediate sheet portions 44 held by the suction roller 46 move faster than the tipping paper strip, so that spacings are formed which correspond to the desired overlap 22.
  • the intermediate sheet portions 44 and the tipping paper strip 31 are brought together in such a way that the ultimate mouth ends, i.e. the mid-lines of the two strips 31 and 35 coincide at the broken line 34 in Fig. 3.
  • the underside 49 of the resulting combined strip 47 is coated with adhesive in a second applicator 50 and the combined strip is then severed in the cutting means 33.
  • the cut is made along the leading or trailing edge of the associated intermediate sheet portion 44, so that portions 51 are formed with an edge of the tipping paper projecting to one side, which can form the overlap 22.
  • the tipping paper portions are stuck around the ends of two tobacco rods and intermediately positioned double-length filter rod.
  • the resulting double filter cigarettes are then cut into two filter cigarettes in the centre of the double-length filter rods, as along the broken line 34 in Fig. 3.
  • the groups of air holes 26 are formed by perforations in the tipping paper 21.
  • continuous perforations can be provided which thus also extend over the gaps between the slits.
  • a reel 30 of preperforated tipping paper strip it is possible to use a reel 30 of preperforated tipping paper strip.
  • a reel 30 of unperforated paper and then make the perforations in the strip 31 as it is withdrawn from the reel.
  • perforating apparatus 52 is provided, which is positioned upstream of the combining means 45 and makes air holes 26 in those regions of the tipping paper which will subsequently face the slits.
  • the furnishing rollers 53 and 54 of the adhesive applicators 40 and 50 transfer a pattern of adhesive to the associated applicator rollers 55 and 56 that provide adhesive-free zones on the latter, as at 57 in Fig. 5.
  • the adhesive-free zones are so arranged and, through appropriate synchronisation, rotate in such a way that they contact the portions 58 of the strip 47 which are not to be coated i.e. the slits and/or the gaps.
  • Such an adhesive pattern can be obtained on an adhesive furnishing roller by providing projections on the periphery thereof which extend over the adhesive-free zones and from which applied adhesive is removed by means of a doctor blade (not shown).
  • the pattern of adhesive on the periphery of the applicator roller 56 has, in addition to adhesive-free zones for the slits, as are formed on the roller 55, adhesive-free zones for the gaps between the intermediate sheet portions 44.
  • Synchronisation can be brought about by the use of synchronised, synchronous drives 59, 60 which, as indicated by the chain-dotted arrows, respectively drive the stamping or punching device 38, the pair of rolls 37, the first adhesive applicator 40 and the rotary cutter 43 on the one hand, and the perforating mechanism 52, combining apparatus 45, the second adhesive applicator 50 and the tipping paper cutter 33 on the other, in such a way that the groups of perforations 26 face the slits and the slits are left untouched by adhesive.

Landscapes

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

Claims (10)

1. Article pour fumeur comprenant un filtre (1) à l'extrémité pour la bouche d'un lopet cylindrique de tabac (17), le filtre ayant la forme d'un barreau et étant entouré d'un matériau (21) convenant au contact avec les lèvres et venant en superposition avec l'enveloppe (19) entourant le lopet de tabac, des canaux périphériques (11, 12) pour le passage de l'air secondaire étant couverts par le matériau pour les lèvres, caractérisé en ce que le filtre en forme de barreau est périphériquement imperméable à l'air, une feuille (4) faite d'un matériau substantiellement imperméable étant interposée entre le matériau pour les lèvres et le filtre en forme de barreau, mais sans s'étendre entre ce matériau pour les lèvres et le barreau de tabac, cette feuille (4) étant munie de fentes (6-10) s'étendant depuis l'extrémité pour la bouche (5) mais n'occupant qu'une partie de l'aire de la feuille intermédiaire pour former ainsi les dits canaux qui communiquent avec des perforations (26) ménagées dans le matériau pour les lèvres.
2. Article selon la revendication 1, caractérisé en ce que les fentes (6-10) ont des bords latéraux coupés perpendiculairement au plan de la feuille intermédiaire.
3. Article selon l'une des revendications 1 ou 2, caractérisé en ce que la feuille intermédiaire (4) a une épaisseur de 0,1 à 0,6 mm.
4. Article selon l'une quelconque des revendications précédentes, caractérisé en ce que la feuille intermédiaire (4) s'étend depuis l'extrémité pour la bouche (5) du filtre en forme de barreau (1) jusqu'à l'extrémité (14) éloignée de la bouche, à l'exception d'un espace de tolérance (15).
5. Article selon l'une quelconque des revendications précédentes, caractérisé en ce que le matériau pour les lèvres (21) entoure la feuille intermédiaire (4) avec une superposition (22), tandis que la feuille intermédiaire entoure le filtre en forme de barreau (1) selon une jonction à aboutement (24).
6. Article selon l'une des revendications 4 ou 5, caractérisé en ce que le filtre en forme de barreau (1), considéré avec la feuille intermédiaire (4), présente la même section droite totale (20) que le barreau de tabac (17).
7. Article selon une quelconque des revendications précédentes, caractérisé en ce que les fentes (6-10) sont distribuées uniformément autour de la périphérie du filtre en forme de barreau (1), s'étendent dans la direction longitudinale du filtre en forme de barreau et occupent de 25 à 60% de la péripherie du filtre en forme de barreau à l'extrémité de bouche et de 40 à 80% de la longueur totale du filtre en forme de barreau.
8. Appareil pour la production d'un article selon la revendication 1, comprenant des moyens (30) pour délivrer une bande de double épaisseur de papier pour lèvres (31), des moyens (33) pour couper le papier pour lèvres en des portions, des moyens (50) pour appliquer un adhésif à ces portions, et des moyens pour enrouler les portions individuelles autour d'une double longueur de barreaux-filtres et autour des parties adjacentes de deux barreaux de tabac contigus, et pour diviser les deux cigarettes, de double longueur, qui en résultent en des cigarettes simples, caractérisé par des moyens (36, 37) pour délevrer et faire avancer une bande de double largeur du matériau de feuille intermédiaire (33), des moyens de perçage ou découpage (38) agencés pour établir les fentes (6-10) dans la double largeur de feuille intermédiaire, un premier applicateur d'adhésif (40) pour appliquer de l'adhésif sur le côté de la feuille intermédiaire devant être appliquée contre le papier pour lèvres (31), et des moyens combinés (45) pour assembler le matériau de feuille intermédiaire avec le papier à lèvres (31), de façon que leurs axes longitudinaux (34) coïncident pour former une barrette combinée (47) présentant les canaux dans les positions requises sur sa face destinée à contacter les filtres-barreaux.
9. Appareil selon la revendication 8, caractérisé en ce que des moyens (43) de coupage de feuille intermédiaire sont disposés immédiatement avant les moyens combinés (45) pour couper les feuillets (35) de feuille intermédiaire en des portions de feuille intermédiaire (44), en ce que les moyens combinés (45) sont agencés pour appliquer les portions de feuille intermédiaire à des intervalles espacés contre la bande de papier pour lèvres (31), et en ce que les moyens (33) de coupage de papier pour lèvres sont synchronisés pour découper le long d'une tranche de chaque portion de feuille intermédiaire en laissant un bord de superposition de la bande de papier pour lèvres (31) au bord opposé de la portion coupée résultante (51) de la barrette combinée (47).
10. Appareil selon l'une des revendications 8 ou 9, caractérisé en ce que le premier applicateur d'adhésif (40) et/ou le second applicateur d'adhésif (50) comprend un rouleau applicateur (55, 56) qui roule périphériquement sur la surface de la bande (35) de feuille intermédiaire de double largeur pour la recouvrir d'adhésif, ce rouleau applicateur étant mû en rotation d'une façon synchrone avec le mouvement de la bande de feuille intermédiaire de façon telle que des zones (57) exemptes d'adhésif sur le rouleau viennent en contact avec les fentes (6-10) afin de prévenir le remplissage de celles-ci avec de l'adhésif.
EP82300637A 1981-02-14 1982-02-09 Articles à fumer avec filtres et appareil pour leur production Expired EP0059042B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3105454 1981-02-14
DE3105454A DE3105454C2 (de) 1981-02-14 1981-02-14 Stabförmiger, rauchbarer Artikel mit einem Filterstab am Mundende und Vorrichtung zur Herstellung eines solchen Artikels

Publications (2)

Publication Number Publication Date
EP0059042A1 EP0059042A1 (fr) 1982-09-01
EP0059042B1 true EP0059042B1 (fr) 1985-01-09

Family

ID=6124904

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300637A Expired EP0059042B1 (fr) 1981-02-14 1982-02-09 Articles à fumer avec filtres et appareil pour leur production

Country Status (3)

Country Link
EP (1) EP0059042B1 (fr)
DE (1) DE3105454C2 (fr)
FI (1) FI70120C (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4724848A (en) * 1982-08-18 1988-02-16 British-American Tobacco Company Limited Smoking article filters
NL8301520A (nl) * 1983-04-29 1984-11-16 Turmac Tobacco Co Nv Werkwijze en installatie voor het vervaardigen van een sigarettenfilter.
US4515170A (en) * 1983-05-09 1985-05-07 Brown & Williamson Tobacco Corporation Ventilated mouthpiece for a smoking article
JPS6024178A (ja) * 1983-07-21 1985-02-06 日本たばこ産業株式会社 シガレット用フィルタ−及びその製造方法
US4527570A (en) * 1983-10-12 1985-07-09 Brown & Williamson Tobacco Corporation Device for manufacturing a mouthpiece and attaching mouthpieces to cigarette tobacco columns
GB2175187B (en) * 1985-04-22 1989-02-01 Cigarette Components Ltd Ventilated tobacco smoke filter
GB8531660D0 (en) * 1985-12-23 1986-02-05 British American Tobacco Co Smoking articles
US6345625B1 (en) 1997-12-06 2002-02-12 Kar Eng Chew Filter for secondary smoke and smoking articles incorporating the same
GB2531035A (en) 2014-10-08 2016-04-13 British American Tobacco Investments Ltd Adhesive transfer system
CN108968149B (zh) * 2018-09-06 2024-03-22 重庆中烟工业有限责任公司 一种具有接装纸的卷烟、接装纸及其生产方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE891549A (fr) * 1980-12-22 1982-04-16 Imp Group Ltd Assemblage de terminaison pour un article a fumer allonge
FR2496416A1 (fr) * 1980-12-22 1982-06-25 Imp Group Ltd Bout composite pour article a fumer de forme allongee
GB2090177A (en) * 1980-12-29 1982-07-07 Uss Eng & Consult Pipe seam welding apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3733246A (en) * 1970-07-23 1973-05-15 Philip Morris Inc Forming filled continuous plastic rod such as plastic cigarette filter rod filled with a tow of cellulose acetate
US4023576A (en) * 1973-11-21 1977-05-17 Liggett & Myers Incorporated Cigarette mouthpiece for controlling flow
CH621051A5 (en) * 1976-12-15 1981-01-15 Cigarette Components Ltd Tobacco smoke filter and manufacturing process for this
AU4119078A (en) * 1977-11-18 1980-05-08 Philip Morris Inc Filter system
US4256122A (en) * 1979-04-11 1981-03-17 Brown & Williamson Tobacco Corporation Cigarette filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE891549A (fr) * 1980-12-22 1982-04-16 Imp Group Ltd Assemblage de terminaison pour un article a fumer allonge
FR2496416A1 (fr) * 1980-12-22 1982-06-25 Imp Group Ltd Bout composite pour article a fumer de forme allongee
GB2090177A (en) * 1980-12-29 1982-07-07 Uss Eng & Consult Pipe seam welding apparatus

Also Published As

Publication number Publication date
FI70120C (fi) 1986-09-15
FI70120B (fi) 1986-02-28
DE3105454A1 (de) 1982-09-09
DE3105454C2 (de) 1985-06-05
FI820469L (fi) 1982-08-15
EP0059042A1 (fr) 1982-09-01

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