WO1995001108A1 - Improvements in or relating to processing of smoking material - Google Patents
Improvements in or relating to processing of smoking material Download PDFInfo
- Publication number
- WO1995001108A1 WO1995001108A1 PCT/GB1994/001359 GB9401359W WO9501108A1 WO 1995001108 A1 WO1995001108 A1 WO 1995001108A1 GB 9401359 W GB9401359 W GB 9401359W WO 9501108 A1 WO9501108 A1 WO 9501108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- smoking material
- tobacco
- pressure
- heated
- moisture content
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
- A24B3/182—Puffing
Definitions
- the present invention relates to processing of smoking materials, particularly tobacco and tobacco substitutes .
- organic solvents are used to impregnate the tobacco.
- the tobacco is then quickly subjected to temperatures at least 30°C above the solvent's boiling point. Again, this quick 5 evaporation causes the cell walls of the tobacco to expand.
- a further known expansion method involves the impregnation of tobacco with nitrogen under a high pressure which is generally over 10 MPa (100 bar). 0 The tobacco is then decompressed and passed through a steam tunnel in which the temperature rises rapidly to about 90°C thereby causing the tobacco to expand.
- GB 675292 describes a process for expanding tobacco in which the tobacco is first freed from air 5 and the air replaced by steam or water vapour. The treated tobacco is heated with steam and the pressure is then reduced to expand the tobacco. Pretreatment to remove air from the tobacco appears to be essential to the process.
- the present invention involves a process for expanding smoking material which does not require a pretreatment step to remove air. It has been found that the presence of air during the process leads to no deleterious effects and, therefore, that no pretreatment to remove air is necessary.
- a process for treating smoking material comprising heating smoking material having a moisture content of from 5 to 75% by weight at a temperature of from 70 to 220°C at about or above atmospheric pressure in the presence of air and reducing the pressure on the heated smoking material at a rate sufficient to expand the smoking material.
- the pressure on the smoking material is preferably reduced to from 0.1 to 50 kPa (1 to 500 mbar). This has been found to give good expansion of the smoking material.
- the term "in the presence of air”, as used herein, means that at least 2% air is present.
- the atmosphere in which the smoking material is heated may be 100% air or mixtures of from 2 - 100% air with other gases such as steam, carbon dioxide and nitrogen.
- the smoking material can be heated by direct application of steam, either saturated or superheated.
- the smoking material is heated to a temperature in the range of from 70 to 220°C under a pressure of from 0.1 to 2 MPa (1 to 20 bar gauge), preferably in the range from 102 to 160°C under a pressure of from 0.11 to 0.5 MPa (1.1 to 5 bar).
- the smoking material may be heated by exposure to other relatively hot gases or radiant heat such as microwave radiation.
- the pressure reduction to vacuum conditions is rapid and, typically, takes place in about 0.04 seconds.
- the process is well suited to expansion of tobacco and the bulk expansion may be in the range 20 to 100%.
- the smoking material has an initial moisture content of from 20 to 75% (more preferably 30 to 75% by weight) by weight and returns to near or below its original moisture content during the process, such as to a moisture content of up to 15% by weight.
- the expanded smoking material retains its expanded state without requiring further treatment such as by freeze-drying.
- the process of the invention is carried out as follows.
- Smoking material having a water content between 5 and 75% water on a wet weight basis is placed in a heating vessel.
- the smoking material may require moistening by methods well-known in the art. It may be desirable to include some additives in the water used to wet the smoking material in order to improve performance in terms of improved expansion levels, resilience or the inherent smoking properties of the smoking material; Heat is applied until the desired temperature and pressure are achieved.
- the smoking material is then subjected to rapid depressurisation to vacuum conditions, either by rapidly reducing the pressure in the vessel or by transferring the smoking material directly to a second vessel under vacuum conditions.
- the rapid pressure reduction combined with the heat in the smoking material causes rapid evaporation of the water contained within the cell structure of the smoking material and results in its expansion.
- the smoking material may be subjected to one or more such stages of heating followed by rapid pressure reduction to partial vacuum pressures.
- Indirect heat may be applied to the smoking material during and/or after the vacuum stage (preferably during the vacuum stage) to accelerate the water evaporation.
- This can be achieved in a number of ways such as by radiant heat (e.g., microwave or infra-red radiation).
- radiant heat e.g., microwave or infra-red radiation
- This aspect of the invention may conveniently be carried out by heating the smoking material using microwave radiation before pressure reduction and continuing the heating in the same vessel after pressure reduction.
- the resulting dried expanded product has a more stable structure.
- the expanded tobacco can therefore, when heated in air, be produced without using substances which are expensive and require recovery systems which increase process costs.
- the expanded tobacco is resilient and is not prone to degradation. In addition water does not tend to leach out constituents of the tobacco.
- FPI Filling Power Improvement
- the present expanded tobacco compares very favourably with the known expanded tobaccos in performance whilst at the same time being formed by a process having the distinct advantages described above.
- FIGS 1 and 2 show, by way of example, schematic diagrams of apparatus which may be used for carrying out the process of the present invention.
- smoking material enters pressure chamber 10 through a first seal 12 where it is treated with pressurised steam supplied through inlet 14.
- the treated smoking material then passes through a second seal 16, with air locks as appropriate, into vacuum chamber 18 connected to a vacuum by outlet 20.
- Heat source 22 provides radiant heat to maintain the temperature of the smoking material at a given value whilst the vacuum is applied.
- the resulting product, expanded tobacco is removed from chamber 18 via a third seal 24 with appropriate air locks.
- smoking material 30 is supported in glass bell jar 32 by sample support 34.
- Smoking material 30 is heated by exposure to microwave radiation from microwave generator 36 via wave guide 38 and mode stirrer 40. With vacuum pump 42 on, valve 46 is opened to reduce the pressure in bell jar 32 via connecting line 44 to expand the smoking material. Heating may be continued to lower the moisture content of the expanded tobacco even further.
- Cigar filler tobacco was heated in saturated steam at a pressure of 200 kPa (2 bar) for the times shown in Table 1 below. The temperature of tobacco will have reached or nearly reached 133°C, the temperature of the steam. After the steam supply was shut off, the tobacco was depressurised by opening a valve to an attached vacuum source at a pressure of 0.8 kPa (8 mbar) and the temperature allowed to drop only to a given cut off temperature. The results are shown in Table 1.
- Tests were carried out using a 6 kW microwave oven equipped with a vacuum pump capable of achieving a pressure of about 2.5 kPa (25 mbar).
- the apparatus used for the tests is the same as that shown schematically in Figure 2.
Abstract
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL94312227A PL174384B1 (en) | 1993-06-30 | 1994-06-23 | Improvements related to treatment of smoking material |
AU69786/94A AU677343B2 (en) | 1993-06-30 | 1994-06-23 | Improvements in or relating to processing of smoking material |
US08/564,235 US5740817A (en) | 1993-06-30 | 1994-06-23 | Processing of smoking material |
BR9406869A BR9406869A (en) | 1993-06-30 | 1994-06-23 | Smoking material treatment process |
CA002166410A CA2166410A1 (en) | 1993-06-30 | 1994-06-23 | Improvements in or relating to processing of smoking material |
DE69402316T DE69402316T2 (en) | 1993-06-30 | 1994-06-23 | TREATMENT OF SMOKING MATERIAL |
EP94918479A EP0706331B1 (en) | 1993-06-30 | 1994-06-23 | Improvements in or relating to processing of smoking material |
RO95-02309A RO114218B1 (en) | 1993-06-30 | 1994-06-23 | Smoking material expanding process |
JP7503340A JPH08511947A (en) | 1993-06-30 | 1994-06-23 | Improvement of smoking material processing method |
BG100235A BG100235A (en) | 1993-06-30 | 1995-12-20 | Improvement of method for smoking material treatment |
GR970400479T GR3022950T3 (en) | 1993-06-30 | 1997-03-27 | Improvements in or relating to processing of smoking material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB939313431A GB9313431D0 (en) | 1993-06-30 | 1993-06-30 | Improvements in or relating to processing of smoking material |
GB9313431.0 | 1993-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995001108A1 true WO1995001108A1 (en) | 1995-01-12 |
Family
ID=10738000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1994/001359 WO1995001108A1 (en) | 1993-06-30 | 1994-06-23 | Improvements in or relating to processing of smoking material |
Country Status (20)
Country | Link |
---|---|
US (1) | US5740817A (en) |
EP (1) | EP0706331B1 (en) |
JP (1) | JPH08511947A (en) |
CN (1) | CN1041892C (en) |
AT (1) | ATE150625T1 (en) |
AU (1) | AU677343B2 (en) |
BG (1) | BG100235A (en) |
BR (1) | BR9406869A (en) |
CA (1) | CA2166410A1 (en) |
CZ (1) | CZ396A3 (en) |
DE (1) | DE69402316T2 (en) |
DK (1) | DK0706331T3 (en) |
ES (1) | ES2101541T3 (en) |
GB (1) | GB9313431D0 (en) |
GR (1) | GR3022950T3 (en) |
HU (1) | HU214448B (en) |
PL (1) | PL174384B1 (en) |
RO (1) | RO114218B1 (en) |
RU (1) | RU2114537C1 (en) |
WO (1) | WO1995001108A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0895721A1 (en) * | 1997-08-08 | 1999-02-10 | Hauni Maschinenbau Aktiengesellschaft | Method and apparatus for applying a conditioning agent to tobacco material |
DE10038114A1 (en) * | 2000-08-04 | 2002-02-21 | Bat Cigarettenfab Gmbh | Method and device for conditioning shredded tobacco materials |
US9833021B2 (en) | 2014-10-02 | 2017-12-05 | Digirettes, Inc. | Disposable tank electronic cigarette, method of manufacture and method of use |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9922746D0 (en) * | 1999-09-24 | 1999-11-24 | Rothmans International Ltd | Tobacco processing |
DE10304629B4 (en) * | 2003-02-05 | 2008-10-30 | British American Tobacco (Germany) Gmbh | Pressure conditioning process |
JP2005087212A (en) * | 2003-09-16 | 2005-04-07 | Hauni Maschinenbau Ag | Apparatus and method for simultaneously producing many cigarette rods |
BR112015021211A2 (en) * | 2013-03-14 | 2017-07-18 | Celanese Acetate Llc | associated apparatus, systems and methods for forming organic porous masses for flavored smoking filters |
WO2017091624A1 (en) | 2015-11-24 | 2017-06-01 | Insulet Corporation | Wearable automated medication delivery system |
CN108244690B (en) * | 2017-12-30 | 2020-09-08 | 广州昊然微波设备有限公司 | Tobacco puffing production process |
GB202002796D0 (en) * | 2020-02-27 | 2020-04-15 | British American Tobacco Investments Ltd | Methods of treating tobacco and treated tobacco |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1789435A (en) * | 1929-01-28 | 1931-01-20 | American Mach & Foundry | Expanding tobacco |
GB675292A (en) * | 1948-06-23 | 1952-07-09 | Guardite Corp | Improvements in or relating to puffing of cellular products |
US3823722A (en) * | 1970-10-07 | 1974-07-16 | Smitherm Industries | Method for expanding tobacco |
GB1381203A (en) * | 1971-12-17 | 1975-01-22 | Bat Cigarettenfab Gmbh | Process for improving the filling capacity of tobacco |
US4211243A (en) * | 1977-02-22 | 1980-07-08 | Kikkoman Shoyu Co., Ltd. | Process for producing expanded tobacco stems |
GB2193076A (en) * | 1986-08-01 | 1988-02-03 | American Tobacco Co | Expansion of tobacco |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2903300C2 (en) * | 1979-01-29 | 1982-06-09 | H.F. & Ph.F. Reemtsma Gmbh & Co, 2000 Hamburg | Process for improving the filling capacity of tobacco |
GB8315987D0 (en) * | 1983-06-10 | 1983-07-13 | British American Tobacco Co | Expansion of tobacco |
-
1993
- 1993-06-30 GB GB939313431A patent/GB9313431D0/en active Pending
-
1994
- 1994-06-23 JP JP7503340A patent/JPH08511947A/en active Pending
- 1994-06-23 US US08/564,235 patent/US5740817A/en not_active Expired - Fee Related
- 1994-06-23 DE DE69402316T patent/DE69402316T2/en not_active Expired - Fee Related
- 1994-06-23 RU RU96101168A patent/RU2114537C1/en active
- 1994-06-23 CN CN94192887A patent/CN1041892C/en not_active Expired - Fee Related
- 1994-06-23 AU AU69786/94A patent/AU677343B2/en not_active Ceased
- 1994-06-23 PL PL94312227A patent/PL174384B1/en unknown
- 1994-06-23 AT AT94918479T patent/ATE150625T1/en not_active IP Right Cessation
- 1994-06-23 HU HU9503970A patent/HU214448B/en not_active IP Right Cessation
- 1994-06-23 RO RO95-02309A patent/RO114218B1/en unknown
- 1994-06-23 EP EP94918479A patent/EP0706331B1/en not_active Expired - Lifetime
- 1994-06-23 DK DK94918479.0T patent/DK0706331T3/en active
- 1994-06-23 CZ CZ963A patent/CZ396A3/en unknown
- 1994-06-23 BR BR9406869A patent/BR9406869A/en not_active Application Discontinuation
- 1994-06-23 CA CA002166410A patent/CA2166410A1/en not_active Abandoned
- 1994-06-23 ES ES94918479T patent/ES2101541T3/en not_active Expired - Lifetime
- 1994-06-23 WO PCT/GB1994/001359 patent/WO1995001108A1/en not_active Application Discontinuation
-
1995
- 1995-12-20 BG BG100235A patent/BG100235A/en unknown
-
1997
- 1997-03-27 GR GR970400479T patent/GR3022950T3/en unknown
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1789435A (en) * | 1929-01-28 | 1931-01-20 | American Mach & Foundry | Expanding tobacco |
GB675292A (en) * | 1948-06-23 | 1952-07-09 | Guardite Corp | Improvements in or relating to puffing of cellular products |
US3823722A (en) * | 1970-10-07 | 1974-07-16 | Smitherm Industries | Method for expanding tobacco |
GB1381203A (en) * | 1971-12-17 | 1975-01-22 | Bat Cigarettenfab Gmbh | Process for improving the filling capacity of tobacco |
US4211243A (en) * | 1977-02-22 | 1980-07-08 | Kikkoman Shoyu Co., Ltd. | Process for producing expanded tobacco stems |
GB2193076A (en) * | 1986-08-01 | 1988-02-03 | American Tobacco Co | Expansion of tobacco |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0895721A1 (en) * | 1997-08-08 | 1999-02-10 | Hauni Maschinenbau Aktiengesellschaft | Method and apparatus for applying a conditioning agent to tobacco material |
US6158441A (en) * | 1997-08-08 | 2000-12-12 | Hauni Maschinenbau Ag | Method of and apparatus for applying a conditioning agent to tobacco |
US6581608B1 (en) | 1997-08-08 | 2003-06-24 | Hauni Maschinenbau Ag | Apparatus for applying conditioning agent to tobacco |
US6591840B1 (en) | 1997-08-08 | 2003-07-15 | Hauni Maschinenbau Ag | Apparatus for applying a conditioning agent to tobacco |
DE10038114A1 (en) * | 2000-08-04 | 2002-02-21 | Bat Cigarettenfab Gmbh | Method and device for conditioning shredded tobacco materials |
US6779527B2 (en) | 2000-08-04 | 2004-08-24 | British American Tobacco (Germany) Gmbh | Device for conditioning comminuted tobacco material |
US9833021B2 (en) | 2014-10-02 | 2017-12-05 | Digirettes, Inc. | Disposable tank electronic cigarette, method of manufacture and method of use |
USD805687S1 (en) | 2014-10-02 | 2017-12-19 | Digirettes, Inc. | Vaping device tank |
USD805686S1 (en) | 2014-10-02 | 2017-12-19 | Digirettes, Inc. | Vaping device |
US10278428B2 (en) | 2014-10-02 | 2019-05-07 | Digirettes, Inc. | Disposable tank electronic cigarette, method of manufacture and method of use |
US10299513B2 (en) | 2014-10-02 | 2019-05-28 | Digirettes, Inc. | Disposable tank electronic cigarette, method of manufacture and method of use |
USD857985S1 (en) | 2014-10-02 | 2019-08-27 | Digirettes, Inc. | Vaping device |
USD863676S1 (en) | 2014-10-02 | 2019-10-15 | Digirettes, Inc. | Vaping device tank |
Also Published As
Publication number | Publication date |
---|---|
HU9503970D0 (en) | 1996-03-28 |
US5740817A (en) | 1998-04-21 |
JPH08511947A (en) | 1996-12-17 |
HU214448B (en) | 1998-03-30 |
HUT73339A (en) | 1996-07-29 |
ATE150625T1 (en) | 1997-04-15 |
BG100235A (en) | 1996-07-31 |
GR3022950T3 (en) | 1997-06-30 |
CN1041892C (en) | 1999-02-03 |
PL174384B1 (en) | 1998-07-31 |
EP0706331A1 (en) | 1996-04-17 |
DK0706331T3 (en) | 1997-04-28 |
RU2114537C1 (en) | 1998-07-10 |
PL312227A1 (en) | 1996-04-01 |
AU6978694A (en) | 1995-01-24 |
BR9406869A (en) | 1996-03-26 |
DE69402316T2 (en) | 1997-07-03 |
CN1127464A (en) | 1996-07-24 |
ES2101541T3 (en) | 1997-07-01 |
CZ396A3 (en) | 1996-10-16 |
EP0706331B1 (en) | 1997-03-26 |
AU677343B2 (en) | 1997-04-17 |
DE69402316D1 (en) | 1997-04-30 |
CA2166410A1 (en) | 1995-01-12 |
RO114218B1 (en) | 1999-02-26 |
GB9313431D0 (en) | 1993-08-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4258729A (en) | Novel tobacco product and improved process for the expansion of tobacco | |
US4235250A (en) | Process for the expansion of tobacco | |
US4336814A (en) | Process for expanding tobacco | |
US4340073A (en) | Expanding tobacco | |
US3683937A (en) | Tobacco expansion process | |
EP0107932B1 (en) | Process for increasing filling capacity of tobacco | |
US3524451A (en) | Process for increasing the filling capacity of tobacco | |
US3575178A (en) | A process for increasing the filling capacity of tobacco | |
SU1120917A3 (en) | Method of increasing tobacco volume | |
US4250898A (en) | Carbon dioxide impregnation of tobacco by super cooling | |
US5740817A (en) | Processing of smoking material | |
BG61635B1 (en) | Method for tobacco expansion | |
US4333483A (en) | Tobacco product | |
EP0100590B1 (en) | Method for expanding tobacco | |
CA1115163A (en) | Tobacco product and improved process for the expansion of tobacco | |
US5095923A (en) | Tobacco expansion process using 1,1,1,2-tetrafluoroethane | |
USRE32013E (en) | Expanding tobacco | |
CA1098795A (en) | Process for expanding tobacco | |
US5031644A (en) | Tobacco expansion process and product | |
USRE32014E (en) | Process for expanding tobacco | |
USRE30693E (en) | Process for increasing the filling capacity of tobacco | |
CA1115165A (en) | Tobacco product and improved process for the expansion of tobacco | |
EP0404473A2 (en) | Tobacco expansion process | |
KR820001867B1 (en) | Improved process for expanding tobacco | |
CA1113335A (en) | Process for expanding tobacco |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AT AU BB BG BR BY CA CH CN CZ DE DK ES FI GB GE HU JP KG KP KR KZ LK LU LV MD MG MN MW NL NO NZ PL PT RO RU SD SE SI SK TJ TT UA US UZ VN |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1994918479 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 95-02309 Country of ref document: RO |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2166410 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: PV1996-3 Country of ref document: CZ |
|
WWE | Wipo information: entry into national phase |
Ref document number: 08564235 Country of ref document: US |
|
WWP | Wipo information: published in national office |
Ref document number: 1994918479 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: PV1996-3 Country of ref document: CZ |
|
WWG | Wipo information: grant in national office |
Ref document number: 1994918479 Country of ref document: EP |
|
WWR | Wipo information: refused in national office |
Ref document number: PV1996-3 Country of ref document: CZ |