US3805800A - Ventilated filter tip cigarette - Google Patents

Ventilated filter tip cigarette Download PDF

Info

Publication number
US3805800A
US3805800A US00193124A US19312471A US3805800A US 3805800 A US3805800 A US 3805800A US 00193124 A US00193124 A US 00193124A US 19312471 A US19312471 A US 19312471A US 3805800 A US3805800 A US 3805800A
Authority
US
United States
Prior art keywords
filter
ventilated
wrapper
cigarette
filter tip
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
US00193124A
Other languages
English (en)
Inventor
T Summers
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.)
Brown and Williamson Holdings Inc
Original Assignee
Brown and Williamson Tobacco Corp
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
Priority to BE790146D priority Critical patent/BE790146A/xx
Application filed by Brown and Williamson Tobacco Corp filed Critical Brown and Williamson Tobacco Corp
Priority to US00193124A priority patent/US3805800A/en
Priority to GB3337272A priority patent/GB1349217A/en
Priority to CA149,567A priority patent/CA962908A/en
Priority to BR006635/72A priority patent/BR7206635D0/pt
Priority to FI2714/72A priority patent/FI56106C/fi
Priority to AU47383/72A priority patent/AU453450B2/en
Priority to ZA727138A priority patent/ZA727138B/xx
Priority to DK519972AA priority patent/DK128266B/da
Priority to DE2251903A priority patent/DE2251903C3/de
Priority to CH1550872A priority patent/CH569432A5/xx
Priority to NL7214356.A priority patent/NL160480C/xx
Priority to SE7213869A priority patent/SE382745B/xx
Priority to AR244833A priority patent/AR193904A1/es
Priority to US422930A priority patent/US3924643A/en
Application granted granted Critical
Publication of US3805800A publication Critical patent/US3805800A/en
Priority to DE19742456614 priority patent/DE2456614A1/de
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
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations

Definitions

  • 131/10 A, 131/11, 131 15 formly Porous P g p and pping envelope to pro- 51 rm. Cl. A24d 1/04, A24f 13/06 vide at least one uniformly Porous Ventilated region [58] Field of Search 13 1/10 A l l 15 B 103, having a predetermined area about the filter. The area 13 1H0 R 90 and porosity of the region or regions are correlated so as to provide a relationship which, when the limits [56] References Cited thereof are observed, provides cigarettes with a more UNITED STATES PATENTS constant, reduced delivery of total particulate matter and gas phase constituents than heretofore obtained Q by ventilated filter tip cigarettes. I
  • Ventilation mechanisms may be placed into two major categories, air channeling and perforated wrap; combinations of the two are also often employed.
  • Air channeling has frequently been embodied in cigarettes having corrugated mouthpieces.
  • An example of this type of ventilation is found early in the literature in U.S. Pat. No. 1,718,122, which describes a cigarette having an internally corrugated mouthpiece circumscribing one end of the tobacco column. The outer diameter of the mouthpiece beinglarger than the diameter of the cigarette allowed air to move along the channels provided in the corrugations and enters the smokers mouth without first mixing with the smoke.
  • a later US. Patent, No. 3,490,461 similarly describes a fluted wrap about a filter overwrapped with perforated tipping paper. Air enters through the perforations, but again does not mix with the smoke.
  • the filter perforations usually are patterned in a circumferential line or band about the tipping paper, sometimes positioned over the junction between the tobacco column and filter. Air during puffing enters the perforations and moves into the filter through the junction.
  • US. Pat. No. 3,410,274 describes this feature in detail.
  • the ventilated cigarette of the present invention has a filter plug wrapped with a uniformly porous wrap and overwrapped with uniformly porous tipping envelope.
  • the tipping envelope and plug wrap are adhered together by an adhesive along preselected portions of their contiguous surfaces.
  • the remaining contiguous surfaces are adhesive-free.
  • the adhered regions,due to the impermeability of the adhesive become substantially non-porous in contrast to the adhesive-free regions of the plug wrap and tipping envelope which maintain the uniform porosity.
  • the areas of the adhesive-free regions, ventilation regions, and the total porosity therct'hrough are established to provide a ventilation index" of about 0.5 cm/sec to 20 cm/scc.
  • the ventilation index is defined as the volume of air entering the ventilation regions per second per (Federal Trade Commision) standard puff (hereinafter called the ventilation rate) divided by the total area of the ventilation regions.
  • FIGS. 1(a), 1(b) and 1(a) are schematics which illustrate various prior art ventilation techniques employing either perforations or skinned tipping paper for ventilation;
  • FIG. 2 is a perspective view of a ventilated filter tip cigarette constructed in accordance with the present invention.
  • FIGS. 3(a), 3(b) and 3(0) are schematics illustrating variations of adhesive patterns which may be employed with ventilated filter tip cigarettes of the present invention.
  • a cigarette is comprised ofa tobacco column 11 and filter 12, the dashed line indicating the junction 13 between column 11 and filter l2.
  • Perforations 14 are arranged in a circumferential band in the tipping paper 15 about filter 12.
  • the underlying plug wrap may either be porous or provided with perforations which are in registry with perforations 14. An example of the latter is found in UK. Pat. No. 938,902 assigned to the Imperial Tobacco Company. The coinciding perforations permit ventilation.
  • U.K. Pat. No. 989,479 also assigned to the Imperial Tobacco Company, describes a filter tipped cigarette in which the sleeve encircling the filter stub is made from highly permeable paper which is disposed beneath a perforated encircling band.
  • FIG. 1(b) another prior art variation is illustrated in which the perforations 14 in tipping paper 15 are positioned over junction 13. No adhesive is applied below tipping 15 in this region, thereby permitting air to be drawn through perforations l4 and into filter 12 via underlying junction 13.
  • FIG. 1(c) illustrates still another variation in which the perforations are replaced by shaving or skinning the tipping paper above junction 13 rendering the tipping paper more porous in this region.
  • the skinned region is indicated by the shaded area 16.
  • U.K. Pat. No. 1,039,554 describes the prior art ventilation techniques illustrated in FIGS. 1(b) and 1(0) in detail.
  • FIG. 2 illustrates a filter tipped cigarette having a tobacco column 21 joined to a filter 22 at juncture 23.
  • Filter 22 is enclosed by a uniformly porous plug wrap 26.
  • Tipping envelope 24, also uniformly porous, is disposed about wrapped filter 22 and an appropriate distance over tobacco column 21.
  • the adhesive attaching tipping envelope 24 to plug wrap 26, thereby attaching column 21 to filter 22, is applied to selected areas of the contiguous surfaces in such a manner as to provide a predetermined ventilation as described below.
  • ventilated area adheresive-free contiguous surfaces of tipping envelope and plug wrap
  • total filter pressure drop it is necessary to use material such as paper, for example, having a porosity of about 3 cc/sec to 40 cc/sec.
  • material of the porosity accompanied by a ventilated region or regions'having-a total area of from about 0.5 cm to about 5.0 cm it has been found that reduced particulate matter deliveries may be obtained which, along with pressure drop, have small variations from cigarette to cigarette.
  • the ventilation index the volume of air entering the ventilated region per second per standard puff divided by the ventilated area, necessarily must have a range of 0.5 to 20 cm/sec, and preferably between 2.0 and 6.0 cm/sec.
  • the area of the ventilated regions have upper and lower limitations for practical reasons. When the area becomes too small, the beneficial effects of ventilation become undetectable, thus approaching the results obtained for non-ventilated filter tipped cigarettes. On the other hand, the tipping paper must be securely fastened to the filter and tobacco column. These lower and upper limits have been found to be about 0.5 cm and 5.0 cm respectively.
  • the combined or total porosity of the ventilated regions is also limited by practical considerations. Too great a porosity will not permit sufficient resistance upon puffing and it will be difficult, if not impossible, to smoke the cigarette. With too low a porosity, the results are similar to those obtained for small ventilated regions. Total or combined porosities of about 1 cc/sec to about 10 cc/sec have been found suitable.
  • FIGS. 3(a), 3(b) and 3(0) depict various patterns of ventilated regions 30, 31, 32 formed by selectively applying the adhesive 33.
  • FIGS. 3(a) and 3(b) respectively illustrate longitudinally and circumferentially disposed ventilated regions 30, 31.
  • FIGS. 3(0) is a combination of the patterns of FIGS. 3(a) and 3(b), providing discrete ventilated regions in a checkerboard appearance.
  • FIGS. 3(a), 3(b) and 3(a) visually show the adhered regions, it is understood that this is for purposes of illustration only and that to the eye there is no distinction between ventilated and non-ventilated areas unless otherwise desired. It should also be noted that a single ventilated region may be employed when the critical relationships described above are observed.
  • Example 1 Four different brands of conventional filter tipped cigarettes having perforated tipping paper as a ventilation mechanism were tested in accordance with standard procedures delineated by the Federal Trade Commision. Twenty-four cigarettes in groups of six from each brand were consumed by passing 35 cc of air per puff through the column, each puff being of 2 seconds duration, at 1 minute intervals. The cigarettes were consumed to a 33 millimeter butt. Table 1 below depicts measurements of each brand.
  • the ventilation index was calculated to be 3.0 cm/sec and 3.2 cm/sec, respectively. It should be noted that both average tar RSD and average pressure drop RSD in Table 2 are substantially less than any values shown in Table 1, showing a much more consistent product. It should be noted that the average tar RSD above is equal to or less than the average tar RSD for nonventilated filter tip cigarettes, that value being about 9 percent.
  • the ventilation index of each prior art brand, shown in Example 1 is an order of magnitude greater than those depicted in Table 2.
  • Example 3 Reference is made to Table 3 in which comprisons are made of the yields of selected particulate material and gas phase constituents between a conventional non-ventilated filter tipped cigarette and those constructed in accordance with the present invention. Test procedures identical to those used in Example 1 were employed.
  • the tar, nicotine, and carbon monoxide yields of the control cigarettes were substantially higher than the porous tipped cigarettes of the present invention.
  • porous filter tipped cigarettes provide a means through which reduced and consistent deliveries of total particulate mat ter and gas phase constituents are obtained, thus fulfilling the objective as set forth hereiinbefore.
  • filter material employed is not a limiting factor since the porous tipping as described and claimed herein may be employed with cellulose acetate, activated carbon granules, and other materials equally well. Although the descriptive matter generally describes the filter as being unitary, this is also not to be construed as a limitation since multi-section filters function well in cooperation with porous tipping according to the present invention.
  • cigarette as used throughout the description and claims is meant to include not only cigarettes but any tobacco product smoked in the conventional sense such as, for example, a cigar or a cigarette with a filter tip attached thereto.
  • a ventilated filter tip cigarette comprising:
  • a filter enclosed by a porous air permeable wrapper characterized by substantially uniform porosc.
  • an envelope characterized by substantially uniform porosity enclosing at least a portion of said enclosed filter, said envelope and wrapper being adhered together along at least one but not over the entire area of preselected regions of their contiguous surfaces, the remainder of said contiguous surfaces being adhesive-free, said envelope being air permeable to permit ambient air flow through the remainder area of said envelope and wrapper whereby said filter has a ventilation index of from about 0.5 to 20 cm/sec.
  • An improved ventilated filter tip cigarette comprising:
  • porous, air permeable, tipping paper characterized by substantially uniform porosity, said tipping paper and wrapper being adhered together so as to form at least one region, between said wrapper and tipping paper, which is adhesive-free to permit ambient air flow therethrough wherein the area of the at least one said region is about 0.5 to 5.0 cm and the ventilation index is about 0.5 to 20 cm/sec.

Landscapes

  • Paper (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
US00193124A 1971-10-27 1971-10-27 Ventilated filter tip cigarette Expired - Lifetime US3805800A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
BE790146D BE790146A (fr) 1971-10-27 Cigarette ventilee a bout filtre
US00193124A US3805800A (en) 1971-10-27 1971-10-27 Ventilated filter tip cigarette
GB3337272A GB1349217A (en) 1971-10-27 1972-07-17 Ventilated filter-tip tobacco-smoking article
CA149,567A CA962908A (en) 1971-10-27 1972-08-16 Ventilated filter tip cigarette
BR006635/72A BR7206635D0 (pt) 1971-10-27 1972-09-25 Aperfeicoado cigarro ventilado com ponta filtrante
FI2714/72A FI56106C (fi) 1971-10-27 1972-10-03 Ventilerad filterfoersedd cigarrett
AU47383/72A AU453450B2 (en) 1971-10-27 1972-10-04 Ventilated filter tip cigarette
ZA727138A ZA727138B (en) 1971-10-27 1972-10-05 Ventilated filter tip cigarette
DK519972AA DK128266B (da) 1971-10-27 1972-10-20 Ventileret filtercigaret.
DE2251903A DE2251903C3 (de) 1971-10-27 1972-10-23 Belüftete Filterzigarette
CH1550872A CH569432A5 (enExample) 1971-10-27 1972-10-24
NL7214356.A NL160480C (nl) 1971-10-27 1972-10-24 Filtersigaret of dergelijk tabaksprodukt.
SE7213869A SE382745B (sv) 1971-10-27 1972-10-26 Cigarrett med ventilerat filter
AR244833A AR193904A1 (es) 1971-10-27 1972-10-26 Mejoras en cigarro ventilado con boquilla de filtro
US422930A US3924643A (en) 1971-10-27 1973-12-07 Ventilated filter tip cigarette
DE19742456614 DE2456614A1 (de) 1971-10-27 1974-11-29 Belueftetes, ein filterende aufweisendes tabakerzeugnis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00193124A US3805800A (en) 1971-10-27 1971-10-27 Ventilated filter tip cigarette

Publications (1)

Publication Number Publication Date
US3805800A true US3805800A (en) 1974-04-23

Family

ID=22712356

Family Applications (1)

Application Number Title Priority Date Filing Date
US00193124A Expired - Lifetime US3805800A (en) 1971-10-27 1971-10-27 Ventilated filter tip cigarette

Country Status (14)

Country Link
US (1) US3805800A (enExample)
AR (1) AR193904A1 (enExample)
AU (1) AU453450B2 (enExample)
BE (1) BE790146A (enExample)
BR (1) BR7206635D0 (enExample)
CA (1) CA962908A (enExample)
CH (1) CH569432A5 (enExample)
DE (1) DE2251903C3 (enExample)
DK (1) DK128266B (enExample)
FI (1) FI56106C (enExample)
GB (1) GB1349217A (enExample)
NL (1) NL160480C (enExample)
SE (1) SE382745B (enExample)
ZA (1) ZA727138B (enExample)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924643A (en) * 1971-10-27 1975-12-09 Brown & Williamson Tobacco Corp Ventilated filter tip cigarette
US4035220A (en) * 1973-10-09 1977-07-12 Brown & Williamson Tobacco Corporation Method for making porous filter tip
DE2747775A1 (de) * 1976-10-28 1978-05-03 Olin Corp Aromatisierte zigarette
US4112154A (en) * 1977-09-02 1978-09-05 Olin Corporation Method for obtaining uniform porosity in printed inherently porous cigarette tipping papers
FR2386274A1 (fr) * 1977-04-04 1978-11-03 Burrus & Cie Procede et dispositif de realisation d'une cigarette a filtre et cigarette realisee par le procede
DE2828208A1 (de) * 1977-06-29 1979-01-04 Olin Corp Belueftete filterzigarette
FR2414884A1 (fr) * 1978-01-24 1979-08-17 Seita Perfectionnement aux filtres pour cigarettes
FR2417950A1 (fr) * 1978-02-24 1979-09-21 Seita Perfectionnements aux filtres pour cigarettes
US4281591A (en) * 1977-04-04 1981-08-04 F. J. Burrus & Cie. Production of cigarette filter units
US4294265A (en) * 1980-04-04 1981-10-13 Philip Morris Incorporated Filter cigarette with inlet vent zones
US4295478A (en) * 1979-04-11 1981-10-20 Rjr Archer, Inc. Composite tipping structure for use on an air-ventilated cigarette and method of manufacturing same
US4331165A (en) * 1977-08-05 1982-05-25 Molins, Ltd. Ventilated cigarettes
EP0083197A1 (en) * 1981-12-23 1983-07-06 Imperial Group Plc A tipping assembly for an elongate smoking article
US6718989B1 (en) * 1999-07-29 2004-04-13 Japan Tobacco Inc. Filter for a cigarette and a filter-tipped cigarette
US20090288671A1 (en) * 2006-03-10 2009-11-26 British American Tobacco (Investments) Limited Smoking Article Filter
US20100108081A1 (en) * 2008-10-31 2010-05-06 Leigh Ann Blevins Joyce Filtered cigarette with flavored tipping material
US20100108084A1 (en) * 2008-10-31 2010-05-06 Norman Alan B Filtered cigarette with diffuse tipping material
US20100216220A1 (en) * 2008-08-01 2010-08-26 Bioventures, Inc. Devices and Methods for the Purification, Isolation, Desalting or Buffer/Solvent Exchange of Substances
CN103919280A (zh) * 2014-05-05 2014-07-16 苏州图卡节能科技有限公司 一种香烟过滤嘴
US20210015147A1 (en) * 2018-03-02 2021-01-21 Delfortgroup Ag Aerosol-Generating Article Having Rigid Enveloping Material

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1012025A (en) * 1973-10-09 1977-06-14 James R. Hammersmith Porous filter tip and method for making
DE2531285C2 (de) * 1975-07-12 1982-10-28 Deutsche Benkert Gmbh & Co Kg, 4690 Herne Filterzigarette
GB1585862A (en) * 1976-11-19 1981-03-11 British American Tobacco Co Tobacco-smoke filters
US4090520A (en) * 1976-12-15 1978-05-23 Acumeter Laboratories, Inc. Method of and apparatus for adhering sheet material wrappings and the like
DE2845342A1 (de) * 1978-10-18 1980-04-30 Hauni Werke Koerber & Co Kg Verfahren zum beeinflussen der luftdurchlaessigkeit eines poroesen huellmaterials fuer stabfoermige rauchartikel sowie maschine zum herstellen derartiger rauchartikel
DE2902913C2 (de) * 1979-01-26 1984-10-04 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Verfahren zur Regelung des Ventilationsgrades einer Filtercigarette
ZA804947B (en) * 1979-08-28 1981-06-24 British American Tobacco Co Smoke filtration
DE3005793C2 (de) * 1980-02-15 1985-05-02 Schoeller & Hoesch KG, 7562 Gernsbach Hochporöses Filterpapier und Verfahren zu seiner Herstellung
IT1205612B (it) * 1981-07-06 1989-03-23 Cigarette Components Ltd Assieme di filtrazione per fumo di tabacco

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988088A (en) * 1954-08-10 1961-06-13 Olin Mathieson Cigarette
US3482579A (en) * 1964-02-27 1969-12-09 Imp Tobacco Co Ltd Filter cigarette having a permeable band wrap
US3621851A (en) * 1969-11-26 1971-11-23 Kata Mfg & Filtering Co Filter for smoker's article

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046994A (en) * 1959-07-02 1962-07-31 Olin Mathieson Ventilated cigarette
NL130485C (enExample) * 1964-02-27

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2988088A (en) * 1954-08-10 1961-06-13 Olin Mathieson Cigarette
US3482579A (en) * 1964-02-27 1969-12-09 Imp Tobacco Co Ltd Filter cigarette having a permeable band wrap
US3621851A (en) * 1969-11-26 1971-11-23 Kata Mfg & Filtering Co Filter for smoker's article

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3924643A (en) * 1971-10-27 1975-12-09 Brown & Williamson Tobacco Corp Ventilated filter tip cigarette
US4035220A (en) * 1973-10-09 1977-07-12 Brown & Williamson Tobacco Corporation Method for making porous filter tip
DE2747775A1 (de) * 1976-10-28 1978-05-03 Olin Corp Aromatisierte zigarette
US4281591A (en) * 1977-04-04 1981-08-04 F. J. Burrus & Cie. Production of cigarette filter units
FR2386274A1 (fr) * 1977-04-04 1978-11-03 Burrus & Cie Procede et dispositif de realisation d'une cigarette a filtre et cigarette realisee par le procede
DE2828208A1 (de) * 1977-06-29 1979-01-04 Olin Corp Belueftete filterzigarette
FR2395716A1 (fr) * 1977-06-29 1979-01-26 Olin Corp Filtre d'extremite microperfore pour cigarettes
US4174719A (en) * 1977-06-29 1979-11-20 Olin Corporation Microperforated filter tip cigarette
US4331165A (en) * 1977-08-05 1982-05-25 Molins, Ltd. Ventilated cigarettes
US4112154A (en) * 1977-09-02 1978-09-05 Olin Corporation Method for obtaining uniform porosity in printed inherently porous cigarette tipping papers
FR2414884A1 (fr) * 1978-01-24 1979-08-17 Seita Perfectionnement aux filtres pour cigarettes
US4237908A (en) * 1978-02-24 1980-12-09 Service D'exploitation Industrielle Des Tabacs Et Des Allumettes Method for manufacturing filter-tipped cigarettes
FR2417950A1 (fr) * 1978-02-24 1979-09-21 Seita Perfectionnements aux filtres pour cigarettes
US4295478A (en) * 1979-04-11 1981-10-20 Rjr Archer, Inc. Composite tipping structure for use on an air-ventilated cigarette and method of manufacturing same
US4294265A (en) * 1980-04-04 1981-10-13 Philip Morris Incorporated Filter cigarette with inlet vent zones
EP0083197A1 (en) * 1981-12-23 1983-07-06 Imperial Group Plc A tipping assembly for an elongate smoking article
US4587982A (en) * 1981-12-23 1986-05-13 Imperial Group Plc Tipping assembly for an elongate smoking article
US6718989B1 (en) * 1999-07-29 2004-04-13 Japan Tobacco Inc. Filter for a cigarette and a filter-tipped cigarette
US20090288671A1 (en) * 2006-03-10 2009-11-26 British American Tobacco (Investments) Limited Smoking Article Filter
US8752556B2 (en) * 2006-03-10 2014-06-17 British American Tobacco (Investments) Limited Smoking article filter
US8187476B2 (en) 2008-08-01 2012-05-29 Bioventures, Inc. Devices and methods for the purification, isolation, desalting or buffer/solvent exchange of substances
US20100216220A1 (en) * 2008-08-01 2010-08-26 Bioventures, Inc. Devices and Methods for the Purification, Isolation, Desalting or Buffer/Solvent Exchange of Substances
US8062533B2 (en) 2008-08-01 2011-11-22 Bioventures, Inc. Devices and methods for the purification, isolation, desalting or buffer/solvent exchange of substances
US8562840B2 (en) 2008-08-01 2013-10-22 Bioventures, Inc. Devices and methods for the purification, isolation, desalting or buffer/solvent exchange of substances
US20100108084A1 (en) * 2008-10-31 2010-05-06 Norman Alan B Filtered cigarette with diffuse tipping material
US20100108081A1 (en) * 2008-10-31 2010-05-06 Leigh Ann Blevins Joyce Filtered cigarette with flavored tipping material
CN103919280A (zh) * 2014-05-05 2014-07-16 苏州图卡节能科技有限公司 一种香烟过滤嘴
US20210015147A1 (en) * 2018-03-02 2021-01-21 Delfortgroup Ag Aerosol-Generating Article Having Rigid Enveloping Material
US12161152B2 (en) * 2018-03-02 2024-12-10 Delfortgroup Ag Aerosol-generating article having rigid enveloping material

Also Published As

Publication number Publication date
NL7214356A (enExample) 1973-05-02
SE382745B (sv) 1976-02-16
FI56106B (fi) 1979-08-31
DE2251903C3 (de) 1983-06-16
DE2251903A1 (de) 1973-05-03
BE790146A (fr) 1973-02-15
AU453450B2 (en) 1974-10-03
NL160480C (nl) 1979-11-15
CH569432A5 (enExample) 1975-11-28
CA962908A (en) 1975-02-18
ZA727138B (en) 1973-06-27
AR193904A1 (es) 1973-05-31
FI56106C (fi) 1979-12-10
BR7206635D0 (pt) 1973-07-24
GB1349217A (en) 1974-04-03
AU4738372A (en) 1974-04-11
DE2251903B2 (de) 1977-06-23
DK128266B (da) 1974-04-01

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