AU644690B2 - Smoking article - Google Patents
Smoking article Download PDFInfo
- Publication number
- AU644690B2 AU644690B2 AU85547/91A AU8554791A AU644690B2 AU 644690 B2 AU644690 B2 AU 644690B2 AU 85547/91 A AU85547/91 A AU 85547/91A AU 8554791 A AU8554791 A AU 8554791A AU 644690 B2 AU644690 B2 AU 644690B2
- Authority
- AU
- Australia
- Prior art keywords
- smoking
- smoking article
- smoke
- article
- 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.)
- Ceased
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
- A24D1/00—Cigars; Cigarettes
-
- 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
Landscapes
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Saccharide Compounds (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Description
AUSTRALIA
Patents Act 1990 ROTHMANS INTERNATIONAL TOBACCO LIMITED
ORIGINAL
COMPLETE SPECTFICATION STANDARD PATv"T
S.
S
S..
b955 0 5 S 0
S.
S S 555 6 S 55 S S 55 Invention Title: SMOKING ARTICLE The following statement is a full description of this invention including the best method of performing it known to us:-
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S.
S See
C*
C. SMOKING ARTICLE This invention relates to a smoking article in which the smoking material can be tobacco or any other suitable material.
The composition of the cigarette smoke aerosol is complex, containing many compounds in the particulate and vapour phases. It is possible to classify the compounds contained within the particulate phase into two fractions, these are the involatile and semivolatile fractions.
The semivolatile fraction can be defined as consisting of all of those compounds which evaporate from a chemically inert substrate heated to a temperature of 200 0
C.
Many of the compounds which have been identified as contributors to the taste and flavour of cigarette smoke are contained within the semivolatile fraction. Also it is found experimentally that approximately 50% of the total particulate matter of cigarette smoke is semivolatile.
It is an object of the present invention to deliver to the smoker an enhanced concentration of semivolatile compounds in the smoke and a reduced concentration of involatiles, thus maintaining taste and flavour at lower S total particulate matter yields.
According to the present invention a smoking article comprises a rod of smoking material and a filter portion, said filter portion including means for collecting ZO particulate matter in the smoke from the rod of smoking material in a collection zone, and means for heating said collection zone to release the semivolatile compounds whilst allowing the involatiles to be retained in the filter.
Preferably the rod of. smokingmaterial includes a longitudinally extending passage to feed hot gases from the tip of the article when lit to the said collection zone. In one preferred embodiment the collection zone is provided by an impervious transversely extending member on which the particulate matter is deposited by the smoke from the smoking material.
The transversely extending member can be provided by a disc the centre portion of which provides said collection zone and which is surrounded by an exit opening or openings.
4..,Preferably the disc is provided in a chamber into c° which smoke from the smoking material is delivered and into ep*. L' which the longitudinally extending passage feeds hot gases to the collection zone.
4 If desired means may be included for accelerating the hot gases from the passage into the collection zone.
In another embodiment the collection zone can be S0 provided in a high retention filter element.
0004 see With this arrangement the high retention filter ~5 element can be spaced away from the end of the smoking e* material rod to form a chamber adjacent the collection zone and into which smoke from the smoking material is delivered 06 and into which the longitudinally extending passage feeds hot gases to the collection zone.
O
A secondary filter element can be provided which is located at the mouth piece end of the article.
Preferably the passage in the rod of smoking material is formed by a low porosity/permeability tube.
-3- The invention can be performed in various ways but two embodiments will now be described by way of example and with reference to the accompanying drawings in which Figure 1 is a cross-sectional side elevation of a smoking article according to the present invention; Figure 2 is a cross-sectional view on the line II-II in Figure 1; Figure 3 is a cross-sectional view on the line III- III of Figure 1; Figure 4 is a cross-sectional view on the line IV-IV of Figure 1; and, Figure 5 is a cross-sectional side elevation of another construction according to the invention.
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oO As shown in Figures 1 to 4 the smoking article according to the invention comprises a rod 1 of smoking material, for example tobacco, carried in a paper outer Ce wrapper 2. The rod is provided with a longitudinally 5 ,extending passage 3 formed by a tube of low porosity/permeabilit" inaterial 4 which may be made from paper or reconsL- .ed tobacco sheet. The tube may have a ma diameter typically in the range of 0.5 to 5 mm. Also located within the paper wrapper 2 is a filter 5 at the mouth piece end and an impervious transversely extending 2 >0 member in the form of an impaction disc made of material which is temperature stable. Examples of the materials from which the disc may be constructed include metals, for example aluminium, ceramics or plastics such as nylon, polyethylene, polypropylene or cellulose acetate.
Preferably the disc has a low thermal heat capacity and it -4may al~o have a low thermal conductivity, for example when constructed from a ceramic or from Nylon 66. This disc 6 has a central impaction surface 7 which is surrounded by circumferential holes 8 typically of 1 mm diameter.
Between the inner end 9 of the tobacco rod 1 and the surface of the disc 6 a chamber 10 is formed in which is located a second disc 11 which can also be made from a material selected from the examples given for the disc 6, and this may be the same as, or different from, that used in the construction of the disc 6 in a particular construction.
One or more (three are shown) small diameter holes 12 are provided in the disc 11 and these may typically be of 0.1 1 mm diameter and preferably 0.4 1 mm diameter. These [S holes act as acceleration nozzles in the manner to be described.
S.
5
S..
0 0655 a.
0 0 @0
S
6 S OS S Se When the article is smoked and the end 13 is lit smoke passes into the chamber 10 and through the nozzles 12, ao the action of passing through the nozzles 12 increases the velocity of the smoke and assists in the impaction of the smoke against the impaction surface 7 on the disc 6. This causes particulate matter to be deposited in the area 7 and to act as a collection zone.
oo o o• S Hot gases from the burning tip pass down the passage 3, are accelerated through the holes 12 and impact on the surface 7 thus heating the collection zone and deposited particulate matter sufficiently to cause the release of the 'o semivolatile compounds which pass radially outwardly with the smoke and through the openings 8 into the filter 5 and to the smoker. Some of the semivolatile compounds may be released as they enter the collection zone before impaction due to the heat in the collection zone.
00
S
*0 0e 0 0000 00 .0 9 The impaction surface provided by the surface 7 is located typically 2 mm from the nozzles 12. In the embodiment shown the passage 3 is located coaxially with the smoking material rod 1 but it could be displaced to one side S if desired.
In the second embodiment as shown in Figure 5 the same reference numerals are used to indicate similar parts as in Figures 1 to 4. In this construction the means for (0 collection particulate matter in the smoke from the rod of smoking material is provided by a high retention filter element 15. The element 15 is spaced away from the end 9 of the smoking material rod and the filter 15 is located in a chamber 10 in place of the disc 11ii. The disc 6 is also IS dispensed with. In this arrangement smoke from the rod 1 impinges on the front surface 16 of the filter 15 and the filter retains a fraction of the total particulate matter over the first few (ten) mm of filter material. This is indicated by reference numeral 17. This retained total 0O particulate matter is again heated by hot air or smoke drawn down the passage 3 as in the previous embodiment. The second filter element 5 can be spaced away from the filter element 15 as shown or it may abut it. Once again the action of the hot air or smoke heats the deposited cl particulate matter and releases the semivolatile fractions which are then drawn through the filter The second filter element 5 may have an inclusion of activated carbon to reduce the concentration of some of the Svapour components in the smoke aerosol.
If desired ventilation air may be introduced through the wrapper 5 into the filter 17 through openings 18 to confine the aerosol and the hot air/smoke stream to the Scentral part of the filter.
SoS0 S S 0 6 S. S 0 5 05 Similarly in the construction-shown in Figure 1 ventilation air may be introduced through the wrapper through openings 19 to aerodynamically focus the aerosol onto the disc 6 to improve the efficiency of the filter.
If desired ventilation air may also be used to cool the evaporated semivolatiles to facilitate recondensation before delivery to the smoker, for example through openings e* **o **e 66 o* 6 9 6 @6
Claims (8)
- 2. A smoking a.ticle as claimed in claim 1 in which said means for heating said collection zone includes a longitudinally extending passage in the rod of smoking material which feeds hot gases from the rod end of the article when lit to heat the said collection zone to raise the temperature thereof.
- 3. A smoking article as claimed in claim 2 in which said transversely extending surface is provided by an impervious transversely extending member on which the particulate matter is deposited by the smoke from the .0 smoking material. i.i.4. A smoking article as claimed in claim 3 in which said 0 transversely extending member is provided by an impaction disc the centre portion of which provides said 'e00transversely extending surface and which is surrounded by an exit opening or openings. A smoking article as claimed in claim 4 in which said disc is located in a chamber into which smoke from the smoking material is delivered and into which the longitudinally extending passage feeds hot gases.
- 6. A smoking article as claimed in any one of claims 2 to 5 including means for accelerating the hot gases from -8- the passage into the collection zone.
- 7. A smoking article as claimed in claim 6 including means for accelerating the smoke from the smoking material and the hot gases from the passage into the collection zone.
- 8. A smoking article as claimed in claim 6 or claim 7 in which the means for accelerating the hot gases or hot gases and smoke includes a disc of impervious material having one or more holes within the range of 0.1 to 1.0 mm diameter.
- 9. A smoking article as claimed in claim 2 in which said transversely extending surface is provided by the front surface of a high retention filter element. A smoking article as claimed in claim 9 in which said high retention filter element is spaced away from an end of the smoking material rod to form a chamber into which smoke from the smoking material is delivered and into which the longitudinally extending passage feeds hot gases. °11. A smoking article as claimed in any one of claims 2 to 10 in which said passage in the rod of smoking material is formed by a low porosity/permeability tube.
- 12. A smoking article as claimed in any one of claims 1 to 11 in which a secondary filter element is located at the mouth piece end of the article.
- 13. A smoking article substant.ally as described herein with reference to and as shown in the accompanying :drawings. DATED this 6 day of October 1993 **ROTHMANS INTERNATIONAL TOBACCO LIMITED Patent Attorneys for the Applicant: F.B. RICE CO. ABSTRACT A smoking article comprising a rod of smoking material and a filter portion, said filter portion including means for collecting particulate matter in the smoke from the rod of smoking material in a collection zone, and means for heating said collection zone to release the semivolatile compounds whilst allowing the involatiles to be retained in the filter. 0000 see** .a 0 41 e S 4
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9023368 | 1990-10-26 | ||
GB909023368A GB9023368D0 (en) | 1990-10-26 | 1990-10-26 | Smoking article |
SG15695A SG15695G (en) | 1990-10-26 | 1995-01-30 | Smoking article |
Publications (2)
Publication Number | Publication Date |
---|---|
AU8554791A AU8554791A (en) | 1992-05-14 |
AU644690B2 true AU644690B2 (en) | 1993-12-16 |
Family
ID=26297856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU85547/91A Ceased AU644690B2 (en) | 1990-10-26 | 1991-10-02 | Smoking article |
Country Status (29)
Country | Link |
---|---|
EP (1) | EP0482872B1 (en) |
JP (1) | JPH04262773A (en) |
CN (1) | CN1061331A (en) |
AP (1) | AP247A (en) |
AT (1) | ATE115368T1 (en) |
AU (1) | AU644690B2 (en) |
BG (1) | BG60511B1 (en) |
BR (1) | BR9104585A (en) |
CS (1) | CS317291A3 (en) |
CU (1) | CU22191A3 (en) |
CY (1) | CY1832A (en) |
DE (1) | DE69105914T2 (en) |
DK (1) | DK0482872T3 (en) |
ES (1) | ES2068522T3 (en) |
FI (1) | FI915054A (en) |
GB (1) | GB9023368D0 (en) |
GR (1) | GR3015084T3 (en) |
HU (1) | HUT66931A (en) |
IE (1) | IE65380B1 (en) |
IS (1) | IS3766A7 (en) |
MA (1) | MA22324A1 (en) |
MX (1) | MX9101730A (en) |
NO (1) | NO176862C (en) |
NZ (1) | NZ240084A (en) |
PL (1) | PL167771B1 (en) |
PT (1) | PT8860U (en) |
RU (1) | RU2001591C1 (en) |
SG (1) | SG15695G (en) |
ZA (1) | ZA918002B (en) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU3202895A (en) * | 1994-07-28 | 1996-02-22 | Lorillard Tobacco Company | Hollow smokable article |
GB2296853A (en) * | 1995-01-12 | 1996-07-17 | Chiu Christopher Chi Wah | Safety cigarette |
GB9724872D0 (en) * | 1997-11-26 | 1998-01-21 | British American Tobacco Co | Smoking articles |
KR100641725B1 (en) * | 2002-09-04 | 2006-11-10 | 니뽄 다바코 산교 가부시키가이샤 | Filter for smoking |
US8240315B2 (en) * | 2005-12-29 | 2012-08-14 | Philip Morris Usa Inc. | Smoking article with improved delivery profile |
US7987856B2 (en) | 2005-12-29 | 2011-08-02 | Philip Morris Usa Inc. | Smoking article with bypass channel |
BRPI0709264B1 (en) | 2006-03-28 | 2018-09-18 | Philip Morris Products Sa | smoking article with a restrictor |
WO2007116751A1 (en) | 2006-03-30 | 2007-10-18 | Japan Tobacco Inc. | Method of treating tobacco mainstream smoke and smoking tool |
US8353298B2 (en) | 2006-07-12 | 2013-01-15 | 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 |
US8424539B2 (en) | 2006-08-08 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with single piece restrictor and chamber |
BRPI0603954B1 (en) * | 2006-09-25 | 2014-05-20 | Souza Cruz Sa | SMOKING ARTICLE AND METHOD FOR MANUFACTURING A SMOKING ARTICLE |
US8235056B2 (en) | 2006-12-29 | 2012-08-07 | 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 |
RU2400110C1 (en) * | 2007-02-02 | 2010-09-27 | Джапан Тобакко Инк. | Smoking device |
JP2010094025A (en) * | 2007-02-02 | 2010-04-30 | Japan Tobacco Inc | Smoking filter |
TW200911141A (en) * | 2007-03-09 | 2009-03-16 | Philip Morris Prod | Super recessed filter cigarette restrictor |
TW200911138A (en) * | 2007-03-09 | 2009-03-16 | Philip Morris Prod | Smoking articles with restrictor and aerosol former |
JP5068817B2 (en) * | 2007-05-28 | 2012-11-07 | 日本たばこ産業株式会社 | cigarette |
AR080556A1 (en) | 2009-10-09 | 2012-04-18 | Philip Morris Prod | FILTER DESIGN TO IMPROVE THE SENSORY PROFILE OF ARTICLES FOR SMOKING WITH CARBON FILTER NOZZLE |
US8424540B2 (en) | 2009-10-09 | 2013-04-23 | Philip Morris Usa Inc. | Smoking article with valved restrictor |
US8905037B2 (en) | 2009-10-15 | 2014-12-09 | Philip Morris Inc. | Enhanced subjective activated carbon cigarette |
US9138016B2 (en) | 2010-03-26 | 2015-09-22 | Philip Morris Usa Inc. | Smoking articles with significantly reduced gas vapor phase smoking constituents |
GB201104788D0 (en) * | 2011-03-22 | 2011-05-04 | British American Tobacco Co | Smoking article |
GB2491358A (en) * | 2011-05-31 | 2012-12-05 | British American Tobacco Co | Smoking device for generating an aerosol |
US9854839B2 (en) * | 2012-01-31 | 2018-01-02 | Altria Client Services Llc | Electronic vaping device and method |
US20170360086A1 (en) * | 2014-12-08 | 2017-12-21 | British American Tobacco (Investments) Limited | A smoking article, a smoking article filter section and a method of manufacturing a smoking article |
ES2717550B2 (en) * | 2017-12-21 | 2020-02-28 | Univ Alicante | COMBINED FILTER FOR THE ELIMINATION OF TARS AND TOXIC COMPOUNDS OF TOBACCO SMOKE |
IT201800010060A1 (en) * | 2018-11-06 | 2020-05-06 | Gd Spa | Cigarette |
CN113163855A (en) * | 2018-12-07 | 2021-07-23 | 日本烟草产业株式会社 | Non-combustion heating type smoking article, electric heating type smoking system and method for manufacturing non-combustion heating type smoking article |
CN110720665B (en) * | 2019-10-15 | 2021-11-05 | 南通醋酸纤维有限公司 | Aerosol generating structure, preparation method and application |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU450226B2 (en) * | 1970-11-30 | 1974-07-04 | British-American Tobacco Company Limited | An improved filter for a cigarette |
AU590714B2 (en) * | 1983-11-04 | 1989-11-16 | British-American Tobacco Company Limited | Improvements relating to smoking articles |
AU633502B2 (en) * | 1988-08-12 | 1993-02-04 | British-American Tobacco Company Limited | Improvements relating to smoking articles |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1892093U (en) * | 1964-01-17 | 1964-04-30 | Werner Baehr | FILTER FOR CIGARETTES OD. DGL. WITH THROTTLE POINTS, CONDENSATION CAVITIES AND IMPACT AREAS |
CH424587A (en) * | 1965-07-28 | 1966-11-15 | Heusser Eduard | Filter to remove tar from the smoke of tobacco products |
US3496945A (en) * | 1967-03-31 | 1970-02-24 | Abraham Emil Tomkin | Air-admixed cigarette utilizing restrictive-flow orifice |
FR2004232A1 (en) * | 1968-03-19 | 1969-11-21 | Grauvogel Kurt | |
US3527235A (en) * | 1968-05-24 | 1970-09-08 | Matra Corp | Tobacco smoke filter device |
GB1256117A (en) * | 1968-06-03 | 1971-12-08 | Universal American Corp | Refrigeration system |
JPS4938800B1 (en) * | 1970-05-08 | 1974-10-21 | ||
CA913486A (en) * | 1970-05-25 | 1972-10-31 | Plourde Jacques | Selective air dosing means for cigarettes |
JPS4836477U (en) * | 1971-09-03 | 1973-05-01 | ||
US3756249A (en) * | 1971-09-23 | 1973-09-04 | Kimberly Clark Co | Smokable article having internal air passageway |
BE790395A (en) * | 1971-10-21 | 1973-02-15 | British American Tobacco Co | SMOKING ARTICLES IMPROVEMENTS |
US3773053A (en) * | 1972-01-24 | 1973-11-20 | Philip Morris Inc | Cigarette with controlled smoking profile |
JPS5119006Y2 (en) * | 1972-04-11 | 1976-05-19 | ||
SE361840B (en) * | 1972-04-13 | 1973-11-19 | Defibrator Ab | |
DE3115004A1 (en) * | 1981-04-14 | 1982-11-11 | Schöller, Wolfgang, 8000 München | Filter for cigarettes or other tobacco products |
JPS60156375A (en) * | 1984-01-27 | 1985-08-16 | 樋口 清治 | Re-combustion prevented tobacco of noxious factor |
DK499289A (en) * | 1988-10-12 | 1990-04-13 | Rothmans Int Tobacco | CANDLE ELEMENTS FOR CIGARET FILTERS AND CIGARETTE EQUIPPED WITH SUCH CUSTOM ELEMENTS |
-
1990
- 1990-10-26 GB GB909023368A patent/GB9023368D0/en active Pending
-
1991
- 1991-10-02 AU AU85547/91A patent/AU644690B2/en not_active Ceased
- 1991-10-03 NZ NZ240084A patent/NZ240084A/en unknown
- 1991-10-07 ZA ZA918002A patent/ZA918002B/en unknown
- 1991-10-10 IS IS3766A patent/IS3766A7/en unknown
- 1991-10-14 AP APAP/P/1991/000331A patent/AP247A/en active
- 1991-10-16 HU HU913264A patent/HUT66931A/en unknown
- 1991-10-17 NO NO914076A patent/NO176862C/en unknown
- 1991-10-18 JP JP3298013A patent/JPH04262773A/en active Pending
- 1991-10-18 CN CN91109837A patent/CN1061331A/en active Pending
- 1991-10-21 CS CS913172A patent/CS317291A3/en unknown
- 1991-10-21 RU SU915001762A patent/RU2001591C1/en active
- 1991-10-21 MA MA22606A patent/MA22324A1/en unknown
- 1991-10-22 ES ES91309726T patent/ES2068522T3/en not_active Expired - Lifetime
- 1991-10-22 DK DK91309726.7T patent/DK0482872T3/en active
- 1991-10-22 EP EP91309726A patent/EP0482872B1/en not_active Expired - Lifetime
- 1991-10-22 DE DE69105914T patent/DE69105914T2/en not_active Expired - Fee Related
- 1991-10-22 AT AT91309726T patent/ATE115368T1/en not_active IP Right Cessation
- 1991-10-23 BR BR919104585A patent/BR9104585A/en unknown
- 1991-10-23 IE IE371791A patent/IE65380B1/en not_active IP Right Cessation
- 1991-10-24 BG BG95363A patent/BG60511B1/en unknown
- 1991-10-24 MX MX9101730A patent/MX9101730A/en not_active Application Discontinuation
- 1991-10-24 CU CU91166A patent/CU22191A3/en unknown
- 1991-10-25 PL PL91292172A patent/PL167771B1/en unknown
- 1991-10-25 FI FI915054A patent/FI915054A/en not_active Application Discontinuation
-
1993
- 1993-08-06 PT PT8860U patent/PT8860U/en not_active IP Right Cessation
-
1995
- 1995-01-30 SG SG15695A patent/SG15695G/en unknown
- 1995-02-16 GR GR950400302T patent/GR3015084T3/en unknown
- 1995-12-01 CY CY183295A patent/CY1832A/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU450226B2 (en) * | 1970-11-30 | 1974-07-04 | British-American Tobacco Company Limited | An improved filter for a cigarette |
AU590714B2 (en) * | 1983-11-04 | 1989-11-16 | British-American Tobacco Company Limited | Improvements relating to smoking articles |
AU633502B2 (en) * | 1988-08-12 | 1993-02-04 | British-American Tobacco Company Limited | Improvements relating to smoking articles |
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