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WO2000000047A9 - Cigarette et filtre presentant un niveau eleve de ventilation - Google Patents

Cigarette et filtre presentant un niveau eleve de ventilation

Info

Publication number
WO2000000047A9
WO2000000047A9 PCT/US1999/014791 US9914791W WO0000047A9 WO 2000000047 A9 WO2000000047 A9 WO 2000000047A9 US 9914791 W US9914791 W US 9914791W WO 0000047 A9 WO0000047 A9 WO 0000047A9
Authority
WO
WIPO (PCT)
Prior art keywords
perforations
filter
cigarette
plug
tipping
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.)
Ceased
Application number
PCT/US1999/014791
Other languages
English (en)
Other versions
WO2000000047A1 (fr
Inventor
Charles R Lambert Jr
Martin T Garthaffner
Donald E Laslie
Duane C Wilder
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
Philip Morris Products 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 Philip Morris Products SA filed Critical Philip Morris Products SA
Priority to AU48473/99A priority Critical patent/AU4847399A/en
Publication of WO2000000047A1 publication Critical patent/WO2000000047A1/fr
Publication of WO2000000047A9 publication Critical patent/WO2000000047A9/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • A24D3/04—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 present invention relates to filter cigarettes, and more particularly, to filter cigarettes having elevated levels of ventilation.
  • Ventilation in a cigarette is the dilution of mainstream smoke with air from the surrounding environment.
  • the degree of ventilation is understood to be the proportional part of puff volume which is attributable to air passing through the filter wrapper of the cigarette during a puff. It is typically measured as a percentile of a standard, 1 ,050 cc per minute rate of drawn flow.
  • Methods of effecting filter dilution have included the selection of a tipping paper having a desired level of permeability, which is typically described in terms of CORESTA units. Perforation of the tipping paper has been used to achieve additional ventilation in many cigarette designs.
  • One method of establishing perforations employs an on-line laser to burn ventilation holes circumferentially about one or more locations along the filter of cigarettes as the cigarettes pass through the latter portions of a tipping machine.
  • Such arrangements are exemplified by the Hauni Laser System provided in the Max or Max S tipping machines sold by Hauni Maschinenbau of Hamburg, Germany.
  • the on-line laser is of sufficient power and time pulse to effect a pre-determined number of holes, with a capacity to controllably and consistently provide up to 40 to 50% ventilation at typical cigarette manufacturing speeds.
  • laser power must be increased or the tipping machine speed must be reduced, so as to provide the lasers sufficient time to burn larger and/or a greater number of holes.
  • larger lasers demand greater safety precautions and capital outlay. The alternative, slowing down the machines, is inimical to cigarette manufacturing efficiency and is therefore a very unattractive proposition.
  • Another method of effecting filter ventilation utilizes pre-perforated plug wrap or in the alternative pin perforated, wrapped filter plugs. Both of these known techniques are difficult to achieve at ventilation levels of 40 or more. Additionally, the pre-perforated technique usually requires employment of a porous plug wrap, which itself adds cost and presents additional operational problems. Porous plug wraps usually tear more easily than less porous or non-porous types. Also, porous plug wraps tend to expand with a filter plug as its tow cures. Accordingly, it is more difficult to control filter diameter with porous plug wrap. It is also more absorbent of moisture and glue which can exacerbate spotting problems in the final product.
  • the acts of pre-perforating a tipping paper and mechanically pin perforating a filter plug removes material at or about the region of perforation such that physical degradation of the tipping paper and/or filter plug may occur if extreme levels of ventilation were attempted with such techniques alone.
  • an object of the present invention is to provide a cigarette and cigarette filter providing extreme ventilation percentiles without creating difficulties or compromising product integrity.
  • Another object of the present invention is to provide a novel cigarette and cigarette filter construction which achieves high ventilation levels, above 60%, precisely and at high cigarette manufacturing speeds.
  • a cigarette having a circumferential row of laser generated ventilation holes at a downstream location along its filter, together with a ventilation arrangement at an upstream location along its filter comprising a pin perforated filter plug enwrapped in a tipping paper having a region of pre-perforations superposing the pin perforated portion of the filter plug.
  • the laser ventilation holes are configured to provide a majority portion of the total ventilation so that the contribution of ventilation at the upstream location is less than that of the downstream location.
  • the arrangement also improves mixing of the mainstream smoke with the air drawn into the cigarette from the ventilating portions of the filter. By such arrangement, extreme levels of ventilation are achievable
  • Fig. 1 is a first preferred embodiment of a recessed, dual plug, highly ventilated cigarette shown in cross-section;
  • Fig. 2 is a partially unraveled perspective view of the cigarette shown in Fig. 1 ;
  • Fig. 3 is a cross-sectional view of a 4-up filter rod used in the construction of the preferred embodiment of the present invention.
  • Fig. 4 is a side view of an alternate embodiment of the inventon.
  • Upstream and downstream directions as used in the description which follows are considered relative to the direction of mainstream smoke as it is drawn through filter tipping during a draw upon a cigarette.
  • the preferred embodiment of the present invention provides a cigarette 2 which is configured to deliver upon its smoking a low tar delivery level of between approximately 1 milligram of tar to 5 milligrams, more preferably in the range of approximately 1 milligram to 3 milligrams as measured by established FTC procedures of early 1998 (FTC tar is total particulate matter minus nicotine and water content).
  • FTC tar is total particulate matter minus nicotine and water content.
  • air ventilation is provided in the filter tipping 4 at a first, downstream location 32 and at a second upstream location 34 such that dilution levels are achieved at grand total dilution percentile levels of 65-70%, preferably with only a 5% variation amongst a manufactured batch of cigarettes.
  • the cigarette 2 constructed in accordance with the preferred embodiment of the present invention comprises a tobacco rod 3 and a filter tipping 4.
  • the tobacco rod portion 3 preferably comprises a column of shredded tobacco 7, either blended or a varietal tobacco as is typically found today in commercially available cigarette products.
  • the tobacco rod 3 is wrapped within a paper wrapper 6.
  • the filter tipping 4 comprises a cellulose acetate filter plug 20 that is spaced apart from the free end 22 of the tipping 4 so as to define a recess 24 within the filter tipping 4 adjacent the free end 22.
  • a second charcoal-laden filter plug 26 is interposed between the first filter plug 20 and the tobacco rod 3, and the two filter plugs 20 and 26 are combined together with a non-porous mouthpiece paper 36.
  • the filter tipping 4 includes a zone of pin perforations 42 at an upstream location 34 along the first, downstream filter plug 20.
  • the zone of pin perforations 42 extends 6 to 8 mm, beginning approximately 12 mm from the free end 22 of the filter tipping 4 and extending to a location approximately 18 mm from the free end 22 of the filter tipping 4.
  • Other zone widths might be utilized instead.
  • the pin perforating operation preferably creates a field of irregular perforation holes 28 extending through the mouthpiece paper 36 and the plug wrap 28 of the first filter plug 20.
  • the tipping paper 10 is provided with one or more rows of off-line laser perforations ("microperfs") 50 at a location along that portion of the tipping paper 10 which at least partially superposes the zone of pin perforations 42 on the first plug 20.
  • Each row of off-line laser perforations typically will include approximately thirty (30) to forty (40) perforation holes 50, depending upon the nature of the selected laser pulse. Such can be achieved by pre-perforating the tipping paper at 30 to 50 holes per inch of paper, more preferably at 35-45 holes per inch.
  • the band of pin perforations 42 have a band width of approximately 6 to 8 mm which facilitates alignment of the row or rows of laser perforated holes 50 in the tipping paper 10 with the zone of pin perforations 42.
  • ventilation is communicated from outside the first filter plug 20 to within the first filter plug 20 at the upstream location 34 through the row of off-line laser perforations 50 of the tipping paper 10 and the band of pin perforations 42.
  • each of the filter plugs 20 and 26 are provided with a porous plug wrap 28 and 29 respectively, although in practice of the present invention, non-porous plug wraps might be used in the alternative.
  • the filter plugs 20 and 26 are combined together preferably with the non-porous mouthpiece paper 36 whose elevated basis weight is sufficient for establishing the aforementioned recess 24 at the free end of the tipping 22 with the desired resistance to collapse.
  • the mouthpiece paper 36 has a basis weight in the range of 90 to 140 grams per square meter, more preferably in the range of 110 to 130 grams per square meter.
  • a succession of the filter plugs 20 and 26 are repetitively combined in a repeated mutual relation within a continuous ribbon of the mouthpiece paper 36 so as to form a continuous rod which includes spaces corresponding to the recesses 24 in the final filter tipping 4.
  • the rod is repetitively cut into individual filter rods 43 usually in a four-up configuration as shown in Fig. 3.
  • the filter assembly undergoes a pin perforation operation at each of the locations 47 corresponding to the downstream location 34 along the first plugs 20, preferably at a perforating station along the filter rod forming operation or preferably after the four-up rod 43 is formed.
  • the tipping machine then executes the step of attaching the combined plugs 20 and 26 to a tobacco rod 3 by axially aligning the filter and tobacco rod components and wrapping same with the tipping paper 10 such that the one or more rows of micro-perforations 50 overlap the respective zone of pin perforations 42.
  • the second filter plug 26 may be a charcoal-free cellulose acetate plug or made an integral part of the first filter plug 20.
  • the tipping 4 of preferred embodiment as shown in Fig. 2 comprises a combined charcoal filter
  • the present invention is workable with a host of alternative plug constructions, including single-plug, plug-space- plug, or any of the various forms of coaxial plugs, whether they are with or without recesses. Additionally, all of the perforations need not be placed about the first filter plug 20.
  • the band of pin perforations 42 are created utilizing technique and machinery used typically in the cigarette industry, as described in U.S. Patent No. 4,665,930 to Arthur et al. Typically such devices and processes move plug assemblies along a transfer path defined by one or more drums while interposing a rack of pins along the transfer path such that the pins impinge upon the filter assemblies.
  • the row(s) of laser perforations 50 provided along the tipping paper 10 is established using known automated techniques such as is taught in U.S. Patent No. 5,341 ,824 to Fletcher et al.
  • the filter assembly is attached to the tobacco rod 3 with the tipping paper 10 in accordance with the established practices in the cigarette manufacturing industry as previously described.
  • the cigarette is passed along an on-line laser system such the system provided in Hauni Max and Hauni Max S tipping machines.
  • the power setting and pulse time is set at the on-line laser system so as to establish a 30% to 60% ventilation level with the laser perforated band 46, more preferably in the range of 40 to 60%.
  • the band of laser perforations 46 comprises a single row of eight to twenty holes 48, more preferably approximately ten holes, that are burned by laser through the tipping paper 10, the mouthpiece paper 36 and the plug wrap 28 of the first filter 20.
  • the holes 48 are preferably positioned at approximately 10 millimeters or more from the free end 22 of the filter tipping 4, yet downstream of the pin perforations 42. Fewer or a greater number of laser perforation holes 48 may be employed, depending upon whether a lesser or greater amount of ventilation is desired, or as laser performance limitations may require.
  • the band 46 of laser holes 48 are located at the downstream location 32 closer to the free end 22 of the filter tipping 4 than the row of off-line laser-perforations 50.
  • the laser output is adjusted to provide the desired percentile amount of ventilation desired from the row of downstream laser perforations 46, preferably up to 50 percentile points of ventilation.
  • the laser perforations 46 are sized such that they provide approximately 60 to 80% of the grand total of ventilation, more preferably at or about 70% of the grand total.
  • the row of pre-perforated holes 50 superpose various members of the holes 52 provided along the zone of pin perforation 42 so as to permit draw of ventilating air into that upstream location 34 along the filter tipping 4.
  • a cognizable portion of the holes 50 along the band of pre-perforations 50 in the tipping paper do not coincide with any particular hole 52 of the band of pin perforations 42 and are consequently at least partially occluded.
  • This randomness is acceptable at lower levels of ventilation at region 34 to produce a desired target ventilation in the range of 20 to 40 percentile points of ventilation with acceptable precision.
  • the present invention assures that ventilation at the upstream location 32 is maintained within these lower limits by the downstream placement of the more precisely controlled laser perforations 48 which in effect provide a short circuit between the upstream location 32 and the source of underpressure (the smoker's draw) adjacent the free end 22 of the tipping 4.
  • the laser perforation holes 48 are sized so as to provide a predominant fraction of the total target ventilation which in the preferred embodiment is preferably approximately a 50% to 60% ventilation contribution of the laser ventilation holes 50 out of a grand total target ventilation of approximately 65 to 90% ventilation.
  • the presence and downstream relation of the on-line laser perforations 48 are believed to promote a more even distribution of mainstream smoke across the filter, as opposed to having the mainstream smoke concentrate centrally as it passes through the filter. This transverse dispersion is believed to improve sensorial perceptions during puffs.
  • the number of on-line laser perforations holes may be increased, preferably to 12, and, as shown in Fig. 4, a second row of laser pre-perforations 50' are added to the tipping paper in superposing relation to the pin perforations 42 so as to establish first and second rows of laser pre-perforations 50, 50'.
  • Such arrangements can achieve elevated levels of ventilation in ranges above 75% ventilation.

Landscapes

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

Abstract

Cigarette composée d'une tige de tabac (3) et d'un bout filtrant (4) comprenant une bande de perforations laser situées au niveau d'un emplacement aval (48) et une deuxième bande de perforations situées au niveau d'un emplacement amont (42), cette deuxième bande (42) présentant une bande extérieure de perforations laser pratiquées dans un papier (50) de bout filtrant et superposées par rapport à une zone de perforations du filtre au niveau de l'emplacement amont (52).
PCT/US1999/014791 1998-06-30 1999-06-30 Cigarette et filtre presentant un niveau eleve de ventilation Ceased WO2000000047A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU48473/99A AU4847399A (en) 1998-06-30 1999-06-30 Low delivery cigarette and filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9202298P 1998-06-30 1998-06-30
US60/092,022 1998-06-30

Publications (2)

Publication Number Publication Date
WO2000000047A1 WO2000000047A1 (fr) 2000-01-06
WO2000000047A9 true WO2000000047A9 (fr) 2000-10-05

Family

ID=22230913

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/014791 Ceased WO2000000047A1 (fr) 1998-06-30 1999-06-30 Cigarette et filtre presentant un niveau eleve de ventilation

Country Status (2)

Country Link
AU (1) AU4847399A (fr)
WO (1) WO2000000047A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616610B (zh) * 2006-11-13 2012-05-23 菲利普莫里斯生产公司 具有限流器的发烟制品

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1299012B1 (fr) 2000-07-12 2007-12-05 Philip Morris Products S.A. Filtre a cavite et article pouvant etre fume comportant un filtre a cavite
KR20090008277A (ko) 2006-03-28 2009-01-21 필립모리스 프로덕츠 에스.에이. 흐름제한장치를 구비한 끽연물품
US7789089B2 (en) * 2006-08-04 2010-09-07 R. J. Reynolds Tobacco Company Filtered cigarette possessing tipping material
TW200911138A (en) * 2007-03-09 2009-03-16 Philip Morris Prod Smoking articles with restrictor and aerosol former
TW200900014A (en) * 2007-03-09 2009-01-01 Philip Morris Prod Smoking article filter with annular restrictor and downstream ventilation
EP2229827B1 (fr) 2007-12-14 2016-11-30 Japan Tobacco Inc. Filtre de cigarette et cigarette à filtre
GB0911182D0 (en) * 2009-06-29 2009-08-12 British American Tobacco Co Filter for a smoking article
US8905037B2 (en) 2009-10-15 2014-12-09 Philip Morris Inc. Enhanced subjective activated carbon cigarette
TW201204272A (en) 2010-03-26 2012-02-01 Philip Morris Prod Smoking articles with significantly reduced gas vapor phase smoking constituents
EP2510814A1 (fr) * 2011-04-15 2012-10-17 Philip Morris Products S.A. Article à fumer ventilé incluant un matériau sorbant
PL2583570T3 (pl) * 2011-10-21 2015-07-31 Philip Morris Products Sa Wyrób do palenia mający wnękę końca doustnego z oznaczeniami
CA2857227C (fr) * 2011-12-09 2016-10-11 Japan Tobacco Inc. Article a fumer et filtre
HUE066225T2 (hu) * 2012-08-06 2024-07-28 Philip Morris Products Sa Dohányzási termék a száj felõli végen lévõ üreggel
CN103478899B (zh) * 2013-09-06 2016-06-08 湖南中烟工业有限责任公司 一种改变传统烟气稀释过程的卷烟
CN104305519B (zh) * 2014-08-20 2016-03-16 湖南中烟工业有限责任公司 一种调整卷烟烟支总通风率的方法
WO2016075234A1 (fr) * 2014-11-12 2016-05-19 Jt International S.A. Procédé de fabrication d'un article à fumer
TW201635927A (zh) * 2015-03-27 2016-10-16 菲利浦莫里斯製品股份有限公司 具有嘴端空腔及通氣的吸煙物件
MX2018004992A (es) 2015-11-12 2018-07-06 Philip Morris Products Sa Articulo formador de aerosol multicomponente.
TW201731397A (zh) * 2016-02-29 2017-09-16 菲利浦莫里斯製品股份有限公司 具有中空管段濾嘴的吸菸製品
AU2021225063A1 (en) 2020-02-20 2022-09-08 Philip Morris Products S.A. Aerosol-generating article having bridging element with basis weight
JP7733221B2 (ja) 2021-08-31 2025-09-02 フィリップ・モーリス・プロダクツ・ソシエテ・アノニム 通気ゾーンに非円形穿孔を有するエアロゾル発生物品

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US2980116A (en) * 1958-11-17 1961-04-18 Olin Mathieson Cigarette
US3283762A (en) * 1964-05-14 1966-11-08 Michael S Kissel Aeratable cigarette
US3860011A (en) * 1973-08-27 1975-01-14 Liggett & Myers Inc Hollow filter
US4564030A (en) * 1982-07-16 1986-01-14 Loew's Theatres, Inc. Cigarette filter assembly
US4699158A (en) * 1986-04-17 1987-10-13 Philip Morris Incorporated Adjustable filter cigarette with tactile indicator
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US5178166A (en) * 1990-09-20 1993-01-12 Philip Morris Incorporated Filter cigarette
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101616610B (zh) * 2006-11-13 2012-05-23 菲利普莫里斯生产公司 具有限流器的发烟制品

Also Published As

Publication number Publication date
WO2000000047A1 (fr) 2000-01-06
AU4847399A (en) 2000-01-17

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