[go: up one dir, main page]

US20110083687A1 - Cigarette filter to reduce smoke deliveries in later puffs - Google Patents

Cigarette filter to reduce smoke deliveries in later puffs Download PDF

Info

Publication number
US20110083687A1
US20110083687A1 US12/577,039 US57703909A US2011083687A1 US 20110083687 A1 US20110083687 A1 US 20110083687A1 US 57703909 A US57703909 A US 57703909A US 2011083687 A1 US2011083687 A1 US 2011083687A1
Authority
US
United States
Prior art keywords
filter
segment
smoking article
flow
channeled
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.)
Abandoned
Application number
US12/577,039
Other languages
English (en)
Inventor
Raquel Olegario
San Li
Mike Braunshteyn
Roland W. Dwyer
Richard Jupe
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 USA Inc
Original Assignee
Philip Morris USA Inc
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 USA Inc filed Critical Philip Morris USA Inc
Priority to US12/577,039 priority Critical patent/US20110083687A1/en
Assigned to PHILIP MORRIS USA INC. reassignment PHILIP MORRIS USA INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DWYER, ROWLAND W., LI, SAN, BRAUNSHTEYN, MIKE, JUPE, RICHARD, OLEGARIO, RAQUEL
Priority to PCT/EP2010/006108 priority patent/WO2011042175A1/fr
Publication of US20110083687A1 publication Critical patent/US20110083687A1/en
Abandoned legal-status Critical Current

Links

Images

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
    • 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
    • A24D3/045—Tobacco smoke filters characterised by their shape or structure with smoke acceleration means, e.g. impact-filters

Definitions

  • cigarettes with high levels of ventilation have usually had unacceptably low levels of resistance to draw (RTD) unless some counter measure was in place to make up for the shortfall in RTD.
  • RTD resistance to draw
  • high-density cellulose acetate filter segments were used to address the short fall.
  • filtered segments tended to reduce tar delivery (FTC), with little or no effect upon gas phase components of mainstream tobacco smoke, such as carbon monoxide (CO) and nitrogen oxide (NO). This solution tended to worsen the CO to tar (FTC) ratios in filtered (FTC tar) cigarettes.
  • Ventilation has a desirable attribute in that, when operating alone, it will reduce both the particulate phase and the gas phase of mainstream smoke.
  • highly ventilated cigarettes have drawbacks in resistance to draw (RTD) as previously discussed. It can be appreciated that with a flow restricting orifice in the cigarette filter, the mainstream smoke is forced to flow through the orifice. With the filter ventilation introduced downstream from this orifice, the ventilation level is dependent on the overall resistance to draw (RTD) upstream from the ventilation holes. For a given number of ventilation holes and size, the filter ventilation level increases as the upstream RTD increases. At a given filter efficiency, increased filter ventilation reduces the smoke tar delivery.
  • tar delivery increases as smoking progresses through the puff count. This is mainly due to the combination of reduced filtration from the tobacco rod, re-vaporization of tar build up on the tobacco rod from previous puff(s), and a decreased filter ventilation contribution as the puff (char line) progresses and the upstream RTD reduces.
  • the tar delivery of the last puff could be twice as much as the first and/or second puffs. Reducing the degree of change from early to later puffs in principle would permit for a more consistent sensorial experience, and reducing the total tar delivery, without significantly affecting the overall smoking experience.
  • FIG. 1 is a cross-sectional view of a smoking article in accordance with one embodiment.
  • FIG. 2 is a cross-sectional view of the smoking article of FIG. 1 in accordance with another embodiment.
  • FIG. 3 is a cross-sectional view of a smoking article in accordance with another embodiment.
  • FIG. 4 is a cross-sectional view of the smoking article of FIG. 3 , in accordance with a further embodiment.
  • FIG. 5 is a graph showing the puff by puff total particulate matter (TPM) deliveries of a conventional cellulose acetate (CA) filtered cigarette.
  • TPM puff by puff total particulate matter
  • a channeled flow segment is designed such that during the process of smoking the cigarette, the resistance to flow of smoke through a channel within the segment increases as a result of tar accumulation or build-up within the channel.
  • the increased resistance causes the filter ventilation to increase and the delivered tar is decreased in the later puffs.
  • the increased resistance to draw (RTD) and filter ventilation during the later puffs can also be designed so that it is difficult to smoke the last few puffs (where tar per puff can be twice as much as the first few puffs) thereby reducing the total tar delivery without significantly impacting the overall smoking experience.
  • RTD resistance to draw
  • filter ventilation during the later puffs can also be designed so that it is difficult to smoke the last few puffs (where tar per puff can be twice as much as the first few puffs) thereby reducing the total tar delivery without significantly impacting the overall smoking experience.
  • a desired pressure drop across the segment can be achieved depending on the size (inner diameter) and the length of the flow channel.
  • a preferred embodiment provides a smoking article 10 comprising a tobacco rod 20 and a filter 30 connected with the tobacco rod 20 by an outer wrapper or tipping paper 28 .
  • the filter 30 comprises a first filter segment 40 at an upstream portion 32 of the filter 30 , a second or mouthpiece filter segment 50 at downstream end portion 34 of the filter 30 , and a channeled flow segment 60 situated between the first and mouthpiece filter segments 40 , 50 .
  • the first and mouthpiece filter segments 40 , 50 are low particulate efficiency filter segments constructed from cellulose acetate tow.
  • smoking articles 10 in the form of cigarettes typically include a generally cylindrical rod 20 of smokable material 22 , contained in a circumscribing porous wrapping material or paper wrapper 24 .
  • the rod 20 is typically referred to as a “tobacco rod” and has a lit end or upstream end 12 and a downstream or filter end 14 .
  • the smokable material 22 is preferably a shredded tobacco or tobacco cut filler. However, any suitable smokable material 22 can be used.
  • the filter 30 is adjacent to the filter end 14 of the tobacco rod 20 such that the filter 30 and tobacco rod 20 are axially aligned in an end-to-end relationship, preferably abutting one another.
  • the filter 30 preferably has a generally cylindrical shape, and the diameter thereof is essentially equal to the diameter of the tobacco rod 20 .
  • the ends (i.e., upstream end 16 and downstream end 18 (i.e., mouth end or buccal end) of the filter 30 are open to permit the passage of air and smoke therethrough.
  • the filter 30 is preferably attached to the tobacco rod 20 by an outer wrapper or tipping paper 28 , which circumscribes both the entire length of the filter 30 and an adjacent region of the tobacco rod 20 .
  • the tipping paper 28 is typically a paper like product; however, any suitable material can be used.
  • the channeled flow segment 60 is adjacent to the first filter segment 50 .
  • the channeled flow segment 60 including the flow channel 62 establishes a substantial portion of a predetermined resistance to draw of the smoking article 10 .
  • the flow channel 62 is preferably coaxially or concentrically positioned within the channeled flow segment 60 .
  • one or more flow channels 62 can be positioned on an outer periphery of the channeled flow segment 60 .
  • the channeled flow segment 60 and the flow channel 62 each have a length of about 1 mm to 15 mm.
  • the flow channel 62 also preferably has a diameter of approximately .5 mm to 2 mm.
  • the channeled flow segment 60 may be constructed of paper, a plastic or a metal and more preferably made of a paper product or a biodegradable plastic or other suitable material having degradability properties.
  • the flow channel 62 is generally straight, having a relatively constant diameter such that the channel 62 extends in a continuous direction without bending from an upstream end to a downstream end of the channeled flow segment 60 .
  • the flow channel can be a spiral channel, or other suitable configuration.
  • the flow channel 62 is at least in part defined by a cylindrical tubular member 48 , which is constructed from a relatively heavy filter plug wrap or paper.
  • the tubular member 48 preferably extends from an upstream end to a downstream end of the segment 60 .
  • the channeled flow segment 60 is preferably sized to contribute sufficient pressure drop such that the smoking article 10 presents a resistance to draw of at least 50 mm water or greater, and more preferably in the range of 70-120 mm water. It can be appreciated that as the channeled flow segments 60 becomes clogged, the resistance to draw and/or flow through the flow channel 62 increases due to the tar build up.
  • the channeled flow segment 60 has a diameter of approximately 7.0 to 8.0 mm, and more preferably approximately 7.4 to 7.8 mm.
  • a tubular body segment 64 at least partially defining a portion of a cavity 66 is situated between the mouthpiece filter 50 and the flow channel 62 of the channeled flow segment 60 .
  • the filter 30 can also include a second upstream tubular body portion (not shown) that spaces the channeled flow segment 60 a predetermined distance apart from the first filter segment 40 .
  • the smoking article 10 also preferably includes a ventilating zone 70 comprised of a first row (and optionally second and possibly third rows) of ventilation holes or perforations 72 , each of which extend through the tipping paper 28 , the plug wrap 26 and the tubular body segment 64 .
  • the ventilating zone 70 is located near or adjacent to the channeled flow segment 60 so that air drawn through the ventilation zone 70 is allowed to mix with the mainstream smoke from the flow channel 62 before arriving at the mouthpiece filter segment 50 .
  • the distance between the ventilating zone 70 and the mouthpiece filter segment 50 is preferably at least 5 mm and more preferably in the range of 5-12 mm.
  • the holes or perforations 72 of the ventilating zone 70 achieve a ventilation level of the smoking article 10 of at least 25% and more preferably at least 50% to 90%.
  • mainstream smoke is drawn from the lit end through the tobacco rod 20 to the downstream end of the filter 30 , and drawn through the flow channel 62 .
  • the flow channel 62 is partially blocked.
  • the resistance to draw (RTD) and the flow distribution of the flow channel 62 can be depend on several factors including the length of the filter 30 and the flow channel 62 , the inner diameter of the flow channel 62 , and the nature or type of filter materials within the first filter segment 40 and the mouthpiece segment 50 .
  • the first filter segment 40 and the mouthpiece filter segment 50 are preferably a starch-based, polypropylene, or plasticized cellulose acetate tow, filter paper or other suitable material.
  • the first filter segment 40 and the mouthpiece segment 50 can also be constructed from a gathered web (e.g., polypropylene web, polyester web, cellulosic web or starch-based web).
  • tar gradually builds up inside and at the ends of the flow channel 62 .
  • Resistance to flow through the flow channel 62 increases due to the tar build up as shown in FIG. 2 , and as a consequence the filter ventilation increases and the tar deliveries decreases in the later puffs.
  • a more consistent puff-by-puff tar delivery is thus achieved attributable to the lowered delivery of the later puffs.
  • the increased filter ventilation results in a decreased amount of tobacco burnt and smoke delivered.
  • the increased resistance to draw (RTD) and filter ventilation during the later puffs can also be designed so that it is difficult to smoke the last few puffs. It is generally accepted that the first few puffs or earlier puffs are more important in terms of the smoking experience, and wherein the reduced tar deliveries in the last few puffs from this novel filter design can have overall tar reduction with minimum impact on the smoking experience. It can also be appreciated that the flow channel 62 can be fine tuned to control the tar build up, by adjusting or changing the size of the channel 62 , including the length and diameter thereof, so that the resistance-to-draw (RTD) is acceptable and ventilation of the filter 30 achieves desired tar delivery from the smoking article 10 .
  • the flow channel 62 can include or be coated with a material 49 ( FIG. 2 ) such as a sintered porous plastic.
  • a material 49 such as a sintered porous plastic.
  • the flow channel is filled with a sintered porous plastic.
  • sintered porous plastics can allow “dry” air flow at a given resistance to draw (RTD).
  • RTD resistance to draw
  • the resistance to draw (RTD) can increase when a “wet” stream is delivered in the flow channel 62 .
  • the flow channel 60 can be in the form of a thin plate 100 (0.2 mm to 2 mm in thickness) with at least one orifice (or flow passage) 110 with a diameter of 0.2 mm to 0.6 mm.
  • the number of orifices 110 is not limited, but preferably the plate 100 has 2-8 orifices, and is mostly determined by the pressure drop introduced by this thin plate with orifices.
  • the pressure drop is preferably in the range of 100 to 500 mm water drop.
  • smoke tar gradually builds up and partially blocks the orifices 110 which cause pressure drop increase. This pressure drop increase would force more air flowing through the filter ventilation holes 72 , or ventilation level increases.
  • the increased filter ventilation will reduce air flowing into the burning coal and reduce the smoke generated.
  • the cigarette filter 30 will have lower ventilation in the earlier puffs and higher ventilation in later puffs.
  • the net effect of gradual increase of ventilation as smoking processes is more smoke in the earlier puffs and less smoke in the latter puffs, resulting more consistent puff by puff smoke deliveries.
  • the filter 30 may be constructed from simple combining techniques typically used in the industry for manufacturing cigarettes at high speeds. Additionally each embodiment includes support about the cavity 66 to provide desired firmness throughout length of the filter 30 .
  • FIG. 5 shows puff by puff total particulate matter (TPM) (mg) deliveries of a conventional cellulose acetate filtered cigarette.
  • TPM puff by puff total particulate matter
  • FIG. 5 shows puff by puff total particulate matter (TPM) (mg) deliveries of a conventional cellulose acetate filtered cigarette.
  • smoke tar tracks with smoke total particulate matter (TPM).
  • the average total particulate matter (TPM) of the first three puffs is 1.0 mg/puff
  • the average of the last three puffs is 1.8 mg/puff.
  • the total particulate matter (TPM) from the whole cigarette is 11.3 mg, with a total of 8 puffs. Accordingly, if the total particulate matter (TPM) from the last three or four puffs of the cigarette are kept at around 1.0 mg or so per puff, or similar to that of the first three puffs, as indicated by the dotted line in FIG.
  • the smoking articles 10 as shown in FIGS. 1-4 are able to deliver 8-9 mg total particulate matter (TPM) with a smoking experience similar to that of a 11 mg total particulate matter (TPM) product, at least for the first half of smoking.
  • TPM total particulate matter

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US12/577,039 2009-10-09 2009-10-09 Cigarette filter to reduce smoke deliveries in later puffs Abandoned US20110083687A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/577,039 US20110083687A1 (en) 2009-10-09 2009-10-09 Cigarette filter to reduce smoke deliveries in later puffs
PCT/EP2010/006108 WO2011042175A1 (fr) 2009-10-09 2010-10-06 Filtre de cigarette permettant de réduire les rendements en fumée des dernières bouffées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US12/577,039 US20110083687A1 (en) 2009-10-09 2009-10-09 Cigarette filter to reduce smoke deliveries in later puffs

Publications (1)

Publication Number Publication Date
US20110083687A1 true US20110083687A1 (en) 2011-04-14

Family

ID=43479473

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/577,039 Abandoned US20110083687A1 (en) 2009-10-09 2009-10-09 Cigarette filter to reduce smoke deliveries in later puffs

Country Status (2)

Country Link
US (1) US20110083687A1 (fr)
WO (1) WO2011042175A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107568788A (zh) * 2017-09-11 2018-01-12 云南中烟工业有限责任公司 一种含气流隧道的三段式卷烟滤嘴
EP3178333A4 (fr) * 2014-08-07 2018-02-14 Japan Tobacco, Inc. Cigarette à filtre
EP3446573A1 (fr) 2017-08-24 2019-02-27 JT International S.A. Papier d'emballage pour article à fumer
CN111588079A (zh) * 2020-05-19 2020-08-28 云南中烟工业有限责任公司 一种可控吸阻的密闭加热式烟支
CN111838758A (zh) * 2020-07-23 2020-10-30 内蒙古昆明卷烟有限责任公司 一种烟嘴及应用其的烟具组件
US11937645B2 (en) 2018-12-17 2024-03-26 Philip Morris Products S.A. Aerosol generating article for use with an aerosol generating device

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014230489A (ja) * 2011-09-20 2014-12-11 日本たばこ産業株式会社 シガレット
JP6368649B2 (ja) 2012-12-13 2018-08-01 日本たばこ産業株式会社 シガレット
CN103110186B (zh) * 2012-12-29 2015-04-15 广东中烟工业有限责任公司 一种二元复合空心烟草纤维纸质滤棒及其制备方法
CN103040112A (zh) * 2012-12-31 2013-04-17 蚌埠卷烟材料厂 间隙图案滤嘴棒

Citations (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592554A (en) * 1946-08-24 1952-04-15 Gen Cigar Co Resilient tobacco product and method of making the same
US2592553A (en) * 1950-01-30 1952-04-15 Gen Cigar Co Tobacco products and processes therefor
US2598680A (en) * 1947-06-13 1952-06-03 Gen Cigar Co Tobacco product and method of manufacture
US2954772A (en) * 1957-05-28 1960-10-04 Mac Farland Aveyard & Company Removal of tar and other deleterious substances from tobacco smoke
US2954783A (en) * 1958-06-12 1960-10-04 Mac Farland Aveyard & Company Filter type tobacco smoking structure for removal of tar
US3098492A (en) * 1960-11-25 1963-07-23 Nat Starch Chem Corp Method of making tobacco product
US3236244A (en) * 1961-09-19 1966-02-22 American Tobacco Co Tobacco smoke filter element
US3255760A (en) * 1962-08-03 1966-06-14 Kimberly Clark Co Tobacco product which produces less tars
US3318312A (en) * 1964-07-27 1967-05-09 Jr Joseph A Curtis Cigarette assembly
US3395713A (en) * 1964-03-10 1968-08-06 Hans Ent Keller Filtering arrangement for smoking articles
US3457927A (en) * 1968-02-20 1969-07-29 Frank Siragusa Filter
US3496945A (en) * 1967-03-31 1970-02-24 Abraham Emil Tomkin Air-admixed cigarette utilizing restrictive-flow orifice
US3581748A (en) * 1969-07-02 1971-06-01 Int Automated Electronics Corp Cigarette filter
US3637447A (en) * 1970-06-10 1972-01-25 American Filtrona Corp Method of making filter means by crimping and overwrapping a tubular element
US3648712A (en) * 1970-01-29 1972-03-14 Celanese Corp Cigarette filter construction
US3685522A (en) * 1971-07-16 1972-08-22 Herbert F Kleinhans Cigarette holder
US3738375A (en) * 1971-07-08 1973-06-12 G Doumas Adjustable tobacco smoke filter device
US3759270A (en) * 1970-01-21 1973-09-18 M Wright Multi piece filter for smoking device
US3860011A (en) * 1973-08-27 1975-01-14 Liggett & Myers Inc Hollow filter
US3931824A (en) * 1973-09-10 1976-01-13 Celanese Corporation Smoking materials
US3968804A (en) * 1974-05-20 1976-07-13 Amf Incorporated Extruded tobacco sheet
US4016887A (en) * 1973-06-21 1977-04-12 Miroslav Uroshevich Two-stage tobacco smoke filter
US4022222A (en) * 1975-11-06 1977-05-10 American Filtrona Corporation Tobacco smoke filter
US4091821A (en) * 1976-11-02 1978-05-30 Scorzo Samuel P Smoking article having an ignition suppression disk
US4135523A (en) * 1976-03-17 1979-01-23 British-American Tobacco Company Limited Tobacco-smoke filters
US4182349A (en) * 1977-11-04 1980-01-08 Kimberly-Clark Corporation Method of making reconstituted tobacco
US4186756A (en) * 1976-06-15 1980-02-05 The Japan Tobacco & Salt Public Corporation Method of processing smoking composition
US4197863A (en) * 1974-05-02 1980-04-15 Benjamin Clayton Tobacco smoke filter
US4256126A (en) * 1978-08-02 1981-03-17 Philip Morris Incorporated Smokable material and its method of preparation
US4256122A (en) * 1979-04-11 1981-03-17 Brown & Williamson Tobacco Corporation Cigarette filter
US4273141A (en) * 1977-03-14 1981-06-16 Jan Van Tilburg Smoke filters
US4340072A (en) * 1979-11-16 1982-07-20 Imperial Group Limited Smokeable device
US4341228A (en) * 1981-01-07 1982-07-27 Philip Morris Incorporated Method for employing tobacco dust in a paper-making type preparation of reconstituted tobacco and the smoking material produced thereby
US4380241A (en) * 1980-05-01 1983-04-19 British-American Tobacco Company Limited Smoking articles
US4386618A (en) * 1981-06-29 1983-06-07 Brown & Williamson Tobacco Corporation Cigarette filter
US4460001A (en) * 1980-09-08 1984-07-17 Celanese Corporation Process for preparing compound filter
US4460112A (en) * 1980-11-03 1984-07-17 Norda Tubazioni S.P.A. Folding clothes stand structure
US4469112A (en) * 1980-09-08 1984-09-04 Celanese Corporation Compound filter
US4508525A (en) * 1980-05-27 1985-04-02 American Filtrona Corporation Method and apparatus for producing tobacco smoke filter having improved tar/carbon monoxide ratio
US4515170A (en) * 1983-05-09 1985-05-07 Brown & Williamson Tobacco Corporation Ventilated mouthpiece for a smoking article
US4542755A (en) * 1984-05-25 1985-09-24 Kimberly-Clark Corporation Dry-forming of reconstituted tobacco and resulting product
US4564030A (en) * 1982-07-16 1986-01-14 Loew's Theatres, Inc. Cigarette filter assembly
US4574820A (en) * 1983-04-07 1986-03-11 Gallaher Limited Buccal end device for a smoking rod
US4585015A (en) * 1984-11-16 1986-04-29 Brown & Williamson Tobacco Corporation Cigarette filter
US4637409A (en) * 1981-05-07 1987-01-20 American Filtrona Corporation Tobacco smoke filter and method and apparatus for making same
US4649944A (en) * 1982-09-30 1987-03-17 Philip Morris Incorporated Filter cigarette
US4660579A (en) * 1984-11-17 1987-04-28 British-American Tobacco Company Limited Tobacco smoke filters
US4677992A (en) * 1986-02-10 1987-07-07 Bliznak Bedrich V Smoking apparatus having convoluted filtering/heat-reduction passageway
US4687008A (en) * 1986-04-17 1987-08-18 Philip Morris Incorporated Filter cigarette
US4732168A (en) * 1986-05-15 1988-03-22 R. J. Reynolds Tobacco Company Smoking article employing heat conductive fingers
US4754766A (en) * 1985-07-20 1988-07-05 British-American Tobacco Company Limited Tobacco smoke filters
US4867182A (en) * 1988-03-16 1989-09-19 R. J. Reynolds Tobacco Company Temperature/humidity controlled valve for a smoking article
US4896682A (en) * 1987-09-17 1990-01-30 Rothmans International Tobacco (Uk) Limited Cigarette filter rods and cigarettes incorporating such filter rods
US4924886A (en) * 1988-11-21 1990-05-15 Brown & Williamson Tobacco Corporation Smoking article
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US4984588A (en) * 1981-09-14 1991-01-15 Philip Morris Incorporated Low delivery cigarette
US5046514A (en) * 1987-03-23 1991-09-10 Imperial Tobacco Limited Smoking material and process for making same
US5050621A (en) * 1988-08-12 1991-09-24 British-American Tobacco Company Limited Smoking articles
US5099864A (en) * 1990-01-05 1992-03-31 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5101839A (en) * 1990-08-15 1992-04-07 R. J. Reynolds Tobacco Company Cigarette and smokable filler material therefor
US5105838A (en) * 1990-10-23 1992-04-21 R.J. Reynolds Tobacco Company Cigarette
US5129408A (en) * 1990-08-15 1992-07-14 R. J. Reynolds Tobacco Company Cigarette and smokable filler material therefor
US5178166A (en) * 1990-09-20 1993-01-12 Philip Morris Incorporated Filter cigarette
US5190061A (en) * 1990-04-20 1993-03-02 Rothmans, Benson & Hedges Inc. Cigarette smoke filter
US5203354A (en) * 1991-06-28 1993-04-20 Philip Morris Incorporated Restructured tobacco dryer
US5392793A (en) * 1981-10-25 1995-02-28 Rothmans International Services Limited Smoking article with means to raise temperature of smoke
US5392792A (en) * 1993-04-13 1995-02-28 R. J. Reynolds Tobacco Company Reduced gas phase cigarette
US5435326A (en) * 1993-07-27 1995-07-25 R. J. Reynolds Tobacco Company Controlled delivery smoking article and method
US5439011A (en) * 1993-06-24 1995-08-08 B.A.T. Cigarettenfabriken Gmbh Coaxial filter cigarette
US5524647A (en) * 1991-08-08 1996-06-11 Rothmans, Benson & Hedges, Inc. Control of cigarette smoke chemistry
US5533530A (en) * 1994-09-01 1996-07-09 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5666976A (en) * 1992-09-11 1997-09-16 Philip Morris Incorporated Cigarette and method of manufacturing cigarette for electrical smoking system
US5709227A (en) * 1995-12-05 1998-01-20 R. J. Reynolds Tobacco Company Degradable smoking article
US5724998A (en) * 1992-04-09 1998-03-10 Philip Morris Incorporated Reconstituted tobacco sheets and methods for producing and using the same
US5727571A (en) * 1992-03-25 1998-03-17 R.J. Reynolds Tobacco Co. Components for smoking articles and process for making same
US5743251A (en) * 1996-05-15 1998-04-28 Philip Morris Incorporated Aerosol and a method and apparatus for generating an aerosol
US5746230A (en) * 1990-08-24 1998-05-05 Philip Morris Incorporated Concentric smoking filter having discrete tow and web filter media
US5954061A (en) * 1997-12-11 1999-09-21 Cardarelli; Venanzio Cigarette aeration and filtration device
US6089238A (en) * 1997-05-30 2000-07-18 Brown & Williamson Tobacco Corporation Ultralight coaxial cigarette including a multipart filter
US6216706B1 (en) * 1999-05-27 2001-04-17 Philip Morris Incorporated Method and apparatus for producing reconstituted tobacco sheets
US6257242B1 (en) * 1999-10-18 2001-07-10 Ioannis C. Stavridis Filter element
US20040025890A1 (en) * 2002-08-08 2004-02-12 Ping-Hung Yen Cigarette filter
US6718989B1 (en) * 1999-07-29 2004-04-13 Japan Tobacco Inc. Filter for a cigarette and a filter-tipped cigarette
US6761174B2 (en) * 2001-02-22 2004-07-13 Philip Morris Incorporated Cigarette and filter with downstream flavor addition
US20040159327A1 (en) * 2003-02-14 2004-08-19 Dante Henry M. Cigarette having porous heat transfer tube
US6779529B2 (en) * 2001-08-01 2004-08-24 Brown & Williamson Tobacco Corporation Cigarette filter
US20050066981A1 (en) * 2003-09-30 2005-03-31 Crooks Evon Llewellyn Filtered cigarette incorporating an adsorbent material
US6883516B2 (en) * 2000-04-27 2005-04-26 Chrysalis Technologies Incorporated Method for generating an aerosol with a predetermined and/or substantially monodispersed particle size distribution
US20060201524A1 (en) * 2005-01-14 2006-09-14 Philip Morris Usa Inc. Cigarettes and cigarette filters including activated carbon for removing nitric oxide
US20070181140A1 (en) * 2005-12-21 2007-08-09 Philip Morris Usa Inc Smoking article having flavorant materials retained in hollow heat conductive tubes
US20070186945A1 (en) * 2005-12-29 2007-08-16 Philip Morris Usa Inc. Smoking article with improved delivery profile
US20080017204A1 (en) * 2006-07-12 2008-01-24 Philip Morris Usa Inc. Smoking article with impaction filter segment
US20080047571A1 (en) * 2006-07-12 2008-02-28 Philip Morris Usa Inc. Smoking article with plate impactor
US20080163877A1 (en) * 2006-12-29 2008-07-10 Philip Morris Usa Inc. Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system
US20080216848A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking article filter with annular restrictor and downstream ventilation
US20080216851A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20110048436A1 (en) * 2008-01-07 2011-03-03 Richard Fiebelkorn Smoking Article

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1397936A (en) * 1971-06-29 1975-06-18 Marmarocopos T Filters for cigarettes or the like
GB1436636A (en) * 1973-05-07 1976-05-19 Berkowitz S Tobacco smoking structures
BRPI0709264B1 (pt) * 2006-03-28 2018-09-18 Philip Morris Products Sa artigo para fumar com um restritor
EP2091362A2 (fr) * 2006-11-13 2009-08-26 Philip Morris Products S.A. Article pour fumeur comprenant un limiteur de flux

Patent Citations (99)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592554A (en) * 1946-08-24 1952-04-15 Gen Cigar Co Resilient tobacco product and method of making the same
US2598680A (en) * 1947-06-13 1952-06-03 Gen Cigar Co Tobacco product and method of manufacture
US2592553A (en) * 1950-01-30 1952-04-15 Gen Cigar Co Tobacco products and processes therefor
US2954772A (en) * 1957-05-28 1960-10-04 Mac Farland Aveyard & Company Removal of tar and other deleterious substances from tobacco smoke
US2954783A (en) * 1958-06-12 1960-10-04 Mac Farland Aveyard & Company Filter type tobacco smoking structure for removal of tar
US3098492A (en) * 1960-11-25 1963-07-23 Nat Starch Chem Corp Method of making tobacco product
US3236244A (en) * 1961-09-19 1966-02-22 American Tobacco Co Tobacco smoke filter element
US3255760A (en) * 1962-08-03 1966-06-14 Kimberly Clark Co Tobacco product which produces less tars
US3395713A (en) * 1964-03-10 1968-08-06 Hans Ent Keller Filtering arrangement for smoking articles
US3318312A (en) * 1964-07-27 1967-05-09 Jr Joseph A Curtis Cigarette assembly
US3496945A (en) * 1967-03-31 1970-02-24 Abraham Emil Tomkin Air-admixed cigarette utilizing restrictive-flow orifice
US3457927A (en) * 1968-02-20 1969-07-29 Frank Siragusa Filter
US3581748A (en) * 1969-07-02 1971-06-01 Int Automated Electronics Corp Cigarette filter
US3759270A (en) * 1970-01-21 1973-09-18 M Wright Multi piece filter for smoking device
US3648712A (en) * 1970-01-29 1972-03-14 Celanese Corp Cigarette filter construction
US3637447A (en) * 1970-06-10 1972-01-25 American Filtrona Corp Method of making filter means by crimping and overwrapping a tubular element
US3738375A (en) * 1971-07-08 1973-06-12 G Doumas Adjustable tobacco smoke filter device
US3685522A (en) * 1971-07-16 1972-08-22 Herbert F Kleinhans Cigarette holder
US4016887A (en) * 1973-06-21 1977-04-12 Miroslav Uroshevich Two-stage tobacco smoke filter
US3860011A (en) * 1973-08-27 1975-01-14 Liggett & Myers Inc Hollow filter
US3931824A (en) * 1973-09-10 1976-01-13 Celanese Corporation Smoking materials
US4197863A (en) * 1974-05-02 1980-04-15 Benjamin Clayton Tobacco smoke filter
US3968804A (en) * 1974-05-20 1976-07-13 Amf Incorporated Extruded tobacco sheet
US4022222A (en) * 1975-11-06 1977-05-10 American Filtrona Corporation Tobacco smoke filter
US4135523A (en) * 1976-03-17 1979-01-23 British-American Tobacco Company Limited Tobacco-smoke filters
US4186756A (en) * 1976-06-15 1980-02-05 The Japan Tobacco & Salt Public Corporation Method of processing smoking composition
US4091821A (en) * 1976-11-02 1978-05-30 Scorzo Samuel P Smoking article having an ignition suppression disk
US4273141A (en) * 1977-03-14 1981-06-16 Jan Van Tilburg Smoke filters
US4182349A (en) * 1977-11-04 1980-01-08 Kimberly-Clark Corporation Method of making reconstituted tobacco
US4256126A (en) * 1978-08-02 1981-03-17 Philip Morris Incorporated Smokable material and its method of preparation
US4256122A (en) * 1979-04-11 1981-03-17 Brown & Williamson Tobacco Corporation Cigarette filter
US4340072A (en) * 1979-11-16 1982-07-20 Imperial Group Limited Smokeable device
US4380241A (en) * 1980-05-01 1983-04-19 British-American Tobacco Company Limited Smoking articles
US4508525A (en) * 1980-05-27 1985-04-02 American Filtrona Corporation Method and apparatus for producing tobacco smoke filter having improved tar/carbon monoxide ratio
US4460001A (en) * 1980-09-08 1984-07-17 Celanese Corporation Process for preparing compound filter
US4469112A (en) * 1980-09-08 1984-09-04 Celanese Corporation Compound filter
US4460112A (en) * 1980-11-03 1984-07-17 Norda Tubazioni S.P.A. Folding clothes stand structure
US4341228A (en) * 1981-01-07 1982-07-27 Philip Morris Incorporated Method for employing tobacco dust in a paper-making type preparation of reconstituted tobacco and the smoking material produced thereby
US4637409A (en) * 1981-05-07 1987-01-20 American Filtrona Corporation Tobacco smoke filter and method and apparatus for making same
US4386618A (en) * 1981-06-29 1983-06-07 Brown & Williamson Tobacco Corporation Cigarette filter
US4984588A (en) * 1981-09-14 1991-01-15 Philip Morris Incorporated Low delivery cigarette
US5392793A (en) * 1981-10-25 1995-02-28 Rothmans International Services Limited Smoking article with means to raise temperature of smoke
US4564030A (en) * 1982-07-16 1986-01-14 Loew's Theatres, Inc. Cigarette filter assembly
US4649944A (en) * 1982-09-30 1987-03-17 Philip Morris Incorporated Filter cigarette
US4574820A (en) * 1983-04-07 1986-03-11 Gallaher Limited Buccal end device for a smoking rod
US4515170A (en) * 1983-05-09 1985-05-07 Brown & Williamson Tobacco Corporation Ventilated mouthpiece for a smoking article
US4542755A (en) * 1984-05-25 1985-09-24 Kimberly-Clark Corporation Dry-forming of reconstituted tobacco and resulting product
US4585015A (en) * 1984-11-16 1986-04-29 Brown & Williamson Tobacco Corporation Cigarette filter
US4660579A (en) * 1984-11-17 1987-04-28 British-American Tobacco Company Limited Tobacco smoke filters
US4754766A (en) * 1985-07-20 1988-07-05 British-American Tobacco Company Limited Tobacco smoke filters
US4677992A (en) * 1986-02-10 1987-07-07 Bliznak Bedrich V Smoking apparatus having convoluted filtering/heat-reduction passageway
US4687008A (en) * 1986-04-17 1987-08-18 Philip Morris Incorporated Filter cigarette
US4732168A (en) * 1986-05-15 1988-03-22 R. J. Reynolds Tobacco Company Smoking article employing heat conductive fingers
US5046514A (en) * 1987-03-23 1991-09-10 Imperial Tobacco Limited Smoking material and process for making same
US4942887A (en) * 1987-06-15 1990-07-24 Fabriques De Tabac Reunies, S.A. Filter mouthpiece for a smoking article
US4896682A (en) * 1987-09-17 1990-01-30 Rothmans International Tobacco (Uk) Limited Cigarette filter rods and cigarettes incorporating such filter rods
US4867182A (en) * 1988-03-16 1989-09-19 R. J. Reynolds Tobacco Company Temperature/humidity controlled valve for a smoking article
US5050621A (en) * 1988-08-12 1991-09-24 British-American Tobacco Company Limited Smoking articles
US4924886A (en) * 1988-11-21 1990-05-15 Brown & Williamson Tobacco Corporation Smoking article
US5099864A (en) * 1990-01-05 1992-03-31 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5190061A (en) * 1990-04-20 1993-03-02 Rothmans, Benson & Hedges Inc. Cigarette smoke filter
US5101839A (en) * 1990-08-15 1992-04-07 R. J. Reynolds Tobacco Company Cigarette and smokable filler material therefor
US5129408A (en) * 1990-08-15 1992-07-14 R. J. Reynolds Tobacco Company Cigarette and smokable filler material therefor
US5598868A (en) * 1990-08-15 1997-02-04 R. J. Reynolds Tobacco Company Cigarette and smokable filler material therefor material for use in smoking articles
US5746230A (en) * 1990-08-24 1998-05-05 Philip Morris Incorporated Concentric smoking filter having discrete tow and web filter media
US5178166A (en) * 1990-09-20 1993-01-12 Philip Morris Incorporated Filter cigarette
US5105838A (en) * 1990-10-23 1992-04-21 R.J. Reynolds Tobacco Company Cigarette
US5203354A (en) * 1991-06-28 1993-04-20 Philip Morris Incorporated Restructured tobacco dryer
US5524647A (en) * 1991-08-08 1996-06-11 Rothmans, Benson & Hedges, Inc. Control of cigarette smoke chemistry
US5727571A (en) * 1992-03-25 1998-03-17 R.J. Reynolds Tobacco Co. Components for smoking articles and process for making same
US5724998A (en) * 1992-04-09 1998-03-10 Philip Morris Incorporated Reconstituted tobacco sheets and methods for producing and using the same
US5666976A (en) * 1992-09-11 1997-09-16 Philip Morris Incorporated Cigarette and method of manufacturing cigarette for electrical smoking system
US5392792A (en) * 1993-04-13 1995-02-28 R. J. Reynolds Tobacco Company Reduced gas phase cigarette
US5439011A (en) * 1993-06-24 1995-08-08 B.A.T. Cigarettenfabriken Gmbh Coaxial filter cigarette
US5435326A (en) * 1993-07-27 1995-07-25 R. J. Reynolds Tobacco Company Controlled delivery smoking article and method
US5715844A (en) * 1994-09-01 1998-02-10 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5533530A (en) * 1994-09-01 1996-07-09 R. J. Reynolds Tobacco Company Tobacco reconstitution process
US5709227A (en) * 1995-12-05 1998-01-20 R. J. Reynolds Tobacco Company Degradable smoking article
US5743251A (en) * 1996-05-15 1998-04-28 Philip Morris Incorporated Aerosol and a method and apparatus for generating an aerosol
US6089238A (en) * 1997-05-30 2000-07-18 Brown & Williamson Tobacco Corporation Ultralight coaxial cigarette including a multipart filter
US5954061A (en) * 1997-12-11 1999-09-21 Cardarelli; Venanzio Cigarette aeration and filtration device
US6216706B1 (en) * 1999-05-27 2001-04-17 Philip Morris Incorporated Method and apparatus for producing reconstituted tobacco sheets
US6718989B1 (en) * 1999-07-29 2004-04-13 Japan Tobacco Inc. Filter for a cigarette and a filter-tipped cigarette
US6257242B1 (en) * 1999-10-18 2001-07-10 Ioannis C. Stavridis Filter element
US6883516B2 (en) * 2000-04-27 2005-04-26 Chrysalis Technologies Incorporated Method for generating an aerosol with a predetermined and/or substantially monodispersed particle size distribution
US6761174B2 (en) * 2001-02-22 2004-07-13 Philip Morris Incorporated Cigarette and filter with downstream flavor addition
US6779529B2 (en) * 2001-08-01 2004-08-24 Brown & Williamson Tobacco Corporation Cigarette filter
US20040025890A1 (en) * 2002-08-08 2004-02-12 Ping-Hung Yen Cigarette filter
US20040159327A1 (en) * 2003-02-14 2004-08-19 Dante Henry M. Cigarette having porous heat transfer tube
US20050066981A1 (en) * 2003-09-30 2005-03-31 Crooks Evon Llewellyn Filtered cigarette incorporating an adsorbent material
US20060201524A1 (en) * 2005-01-14 2006-09-14 Philip Morris Usa Inc. Cigarettes and cigarette filters including activated carbon for removing nitric oxide
US20070181140A1 (en) * 2005-12-21 2007-08-09 Philip Morris Usa Inc Smoking article having flavorant materials retained in hollow heat conductive tubes
US20070186945A1 (en) * 2005-12-29 2007-08-16 Philip Morris Usa Inc. Smoking article with improved delivery profile
US20080017204A1 (en) * 2006-07-12 2008-01-24 Philip Morris Usa Inc. Smoking article with impaction filter segment
US20080047571A1 (en) * 2006-07-12 2008-02-28 Philip Morris Usa Inc. Smoking article with plate impactor
US20080163877A1 (en) * 2006-12-29 2008-07-10 Philip Morris Usa Inc. Smoking article with concentric hollow core in tobacco rod and capsule containing flavorant and aerosol forming agents in the filter system
US20080216848A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking article filter with annular restrictor and downstream ventilation
US20080216851A1 (en) * 2007-03-09 2008-09-11 Philip Morris Usa Inc. Smoking articles with restrictor and aerosol former
US20110048436A1 (en) * 2008-01-07 2011-03-03 Richard Fiebelkorn Smoking Article

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178333A4 (fr) * 2014-08-07 2018-02-14 Japan Tobacco, Inc. Cigarette à filtre
EP3446573A1 (fr) 2017-08-24 2019-02-27 JT International S.A. Papier d'emballage pour article à fumer
WO2019038133A1 (fr) 2017-08-24 2019-02-28 Jt International S.A. Papier d'enveloppe pour un article à fumer
CN107568788A (zh) * 2017-09-11 2018-01-12 云南中烟工业有限责任公司 一种含气流隧道的三段式卷烟滤嘴
US11937645B2 (en) 2018-12-17 2024-03-26 Philip Morris Products S.A. Aerosol generating article for use with an aerosol generating device
CN111588079A (zh) * 2020-05-19 2020-08-28 云南中烟工业有限责任公司 一种可控吸阻的密闭加热式烟支
CN111838758A (zh) * 2020-07-23 2020-10-30 内蒙古昆明卷烟有限责任公司 一种烟嘴及应用其的烟具组件

Also Published As

Publication number Publication date
WO2011042175A1 (fr) 2011-04-14

Similar Documents

Publication Publication Date Title
US20110083687A1 (en) Cigarette filter to reduce smoke deliveries in later puffs
US8235057B2 (en) Smoking article with open ended filter and restrictor
US20080216850A1 (en) Restrictor attachment for unfiltered smoking article
US8353298B2 (en) Smoking article with impaction filter segment
AU2007216341B2 (en) Improvements relating to smoking articles and filter therefor
US9138016B2 (en) Smoking articles with significantly reduced gas vapor phase smoking constituents
US8424540B2 (en) Smoking article with valved restrictor
US20080047571A1 (en) Smoking article with plate impactor
AU2007320875A1 (en) Smoking article with a flow restrictor
CN101442917A (zh) 具有限流件的发烟制品
US8434499B2 (en) Filter design for improving sensory profile of carbon filter-tipped smoking articles
HK1178754A (en) Smoking article with open ended filter and restrictor

Legal Events

Date Code Title Description
AS Assignment

Owner name: PHILIP MORRIS USA INC., VIRGINIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:OLEGARIO, RAQUEL;LI, SAN;BRAUNSHTEYN, MIKE;AND OTHERS;SIGNING DATES FROM 20100114 TO 20100526;REEL/FRAME:024462/0944

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION