GB2131671A - Tobacco leaf processing - Google Patents
Tobacco leaf processing Download PDFInfo
- Publication number
- GB2131671A GB2131671A GB08328686A GB8328686A GB2131671A GB 2131671 A GB2131671 A GB 2131671A GB 08328686 A GB08328686 A GB 08328686A GB 8328686 A GB8328686 A GB 8328686A GB 2131671 A GB2131671 A GB 2131671A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tobacco
- lamina
- strips
- fraction
- stem
- 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.)
- Granted
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
- A24B7/00—Cutting tobacco
-
- 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
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B5/00—Stripping tobacco; Treatment of stems or ribs
Landscapes
- Manufacture Of Tobacco Products (AREA)
Abstract
Tobacco leaf is processed into a form suitable for use in the manufacture of cigarettes by first cutting the leaf into strips, air classifying the strips into a lamina fraction and a stem fraction, threshing the stem fraction to separate lamina associated with the stem, and cutting the lamina strips and the separated lamina into shreds. The stem also may be processed for blending with the lamina shreds. Preferably the tobacco leaf is orientated so that the first cutting step is effected longitudinally of the leaf. <IMAGE>
Description
SPECIFICATION
Tobacco leaf processing
The present invention relates to tobacco leaf processing and more particularly to the formation of cigarettes from leaf tobacco.
In prior U.S. Patent No. 4,233,996, assigned to the applicant herein, there is described a tobacco leaf processing operation wherein the tobacco leaf is simultaneously subjected to cuts perpendicular to one another to form tobacco particles of cigarette rod-forming dimensions, the tobacco particles resulting from the cutting operations are air classified to remove the heavier particles having stem associated therewith from the lighter lamina particles, the heavier particles usually are threshed to separate the stem from lamina particles connected thereto, and the lamina particles resulting from the threshing usually are mixed with the lighter lamina particles resulting from the classification to provide tobacco particles which are suitable for direct formation of cigarettes therefrom without the necessity for further shredding or shred shortening operations.
The mass of tobacco shreds which results from the cutting step must be disentangled prior to air classification. The disentangling operation can lead to shortening of some of the tobacco shreds as a result of the pressures applied to the shreds as they are drawn apart. Shortening of the tobacco shreds decreases the filling power of the tobacco, and this is undesirable. Further, the threshing operation requires multiple threshing and separation to effect complete separation of the lamina material from stem, and these steps create much dust and many particles which are not suitable for subsequent cutting and use in finished cigarettes.
In accordance with the present invention, there is provided a method of processing leaf tobacco, which comprises cutting the tobacco leaf into a plurality of tobacco strips; classifying the plurality of strips into a heavier fraction and a lighter fraction; threshing the heavier fraction strips to separate stem material from lamina material; and cutting the lighter fraction strips and the lamina material to form lamina shreds.
The prior art problem discussed above is overcome, in this invention, by first cutting the tobacco leaf into strips, preferably of a width corresponding to the length of shreds ultimately required for cigarette formation, usually about 1.3 to about 1.9 cm. The tobacco leaves preferably are oriented with respect to the cutting knives so that the leaves are cut longitudinally, so that the central stem is associated with a single tobacco strip. Any convenient cutting equipment may be used to effect the cutting of the tobacco leaf into strips.
The relatively small number of tobacco pieces, in the form of strips, which results from the strip cutting operation, and the association of the heavier stem material with one of the strips enables the tobacco strips to be readily and rapidly classified into lamina strips and the heavier central stem strip, without the necessity for the disentangling operation of the prior art. The tobacco degradation and loss of filler power resulting therefrom are eliminated.
The lamina material then is cut to form shreds suitable for feed to a cigarette making machine.
The cutting may be randomly oriented. The cuts are effected to establish the width of the shreds, and usually is about 0.05 to about 0.13 cm.
The tobacco strip containing the stems is threshed to remove the lamina material associated therewith. The separated lamina is forwarded to the lamina cutting step. The relatively uniform size of the strip which is threshed enables complete lamina and associated stem to be separated in a decreased number of threshing and separating steps when compared with the prior art.
The stem material which results from the threshing step may be subjected to processing for use in cigarette making by known procedures. As set forth in U.S. Patent No.4,386,617, assigned to the applicant herein, the stem material may be fiberized using closely-spaced counter-rotating disks to form fibrous shredded stem material, which is suitable for combining with shredded lamina to form a cigarette maker feed.
The shredded stem material may be forwarded to storage, if desired, for blending with the lamina shreds, or a blend of lamina shreds, after conditioning, if desired, at a later date when it is desired to use the lamina shreds in cigarette making. Any convenient mixing procedure may be used to blend the lamina shreds and shredded stem, such as that described in published U.K.
patent application No. 8304899 filed February 22, 1983, in the name of the applicant herein.
The precedure of the present invention, therefore, constitutes an improvement over that described in prior U.S. Patent No. 4,233,996, in that the procedures are simplified and filling power degradation is avoided. The procedure of the invention may be used to process individual leaves sequentially or a plurality of leaves simultaneously.
The invention is described further, by way of illustration, with reference to the accompanying drawing, wherein the single Figure is a schematic flow sheet of the preferred embodiment of the invention.
Referring to the drawing, tobacco leaves, usually conditioned using conventional moistening procedures, are fed by line 10 to a cutter 12 wherein the tobacco leaves, after orienting so that at least a substantial majority of the leaves is oriented longitudinal of the cutters. In the cutter 12, the tobacco leaves are cut into elongate tobacco strips, which leave the cutter by line 14.
The tobacco strips then are classified in an air classifier 1 6 to separate a lighter fraction comprising lamina strips in line 18 and a heavier.
fraction comprising stem strips having lamina attached thereto.
The lamina strips are passed to a second cutter 22 wherein the strips are cut to form tobacco shreds in line 24 of dimensions suitable for cigarette making, without the necessity for any further cutting or shortening procedures.
The heavy fraction in line 20 is forwarded to a threshing and separation operation 26, wherein the stem particles are threshed to separate the lamina material attached thereto. The threshed material is forwarded by line 28 to an air classifier 30 for classification into a lighter lamina fraction and into a heavier stem fraction. Multiple threshing and air classification operations usually are effected.
The lamina fraction is forwarded by line 32 to the lamina cutter 22, while the stem fraction is forwarded by line 34 to a stem shredder 36 comprising closely-spaced fiberizing plates. In the stem shredder 36 the stems are processed to form shredded stem material, which is forwarded by'line 38 to a mixer 40 wherein it is mixed with lamina shreds in line 24 to form a blend in line 42 for feed to a cigarette-making machine 44, wherein cigarettes in line 46 are formed from the blend.
The illustrated procedure is schematic. It will be understood that in practice shredded lamina and shredded stem may be stored for considerable periods of time prior to cutting or to mixing and that shredded lamina of many grades of tobacco usually are combined to form the final blend from which the cigarettes are formed.
In summary of this disclosure, the present invention relates to a tobacco leaf processing procedure for forming cigarette maker feed which is an improvement over the procedure of U.S.
Patent No. 4,233,996. Modifications are possible within the scope of this invention.
Claims (10)
1. A method of processing leaf tobacco, which comprises cutting the tobacco leaf into a plurality of tobacco strips; classifying the plurality of strips into a heavier fraction and a lighter fraction, threshing the heavier fraction strips to separate stem material from laminate material; and cutting the lighter fraction strips and the lamina material to form lamina shreds.
2. A method as claimed in claim 1, in which the tobacco leaf is oriented so that the first-mentioned cutting step is effected longitudinally of the leaf.
3. A method as claimed in claim 1 or 2, in which a plurality of tobacco leaves is simultaneously processed and the plurality of leaves is manipulated so that at least a substantial majority of the leaves is cut longitudinally of the leaf in the first-mentioned cutting step.
4. A method as claimed in any one of claims 1 to 3, in which the plurality of tobacco strips has a lateral dimension of 1.3 to 1.9 cm.
5. A method as claimed in any one of claims 1 to 4, in which the light fraction strips and lamina material are cut to form shreds having a thickness of 0.05 to 0.13 cm.
6. A method as claimed in any one of claims 1 to 5 including shredding the stem material from the threshing step to form shredded stem material and mixing the shredded stem material with the lamina shreds.
7. A method as claimed in claim 6, in which the shredding of stem material is effected by counterrotating fiberizing surfaces.
8. A method as claimed in any one of claims 1 to 7, in which the tobacco strips are air classified into the lighter and heavier fractions.
9. A method as claimed in any one of claims 1 to 8, in which the threshed material is air classified to separate the ligher lamina fraction from the heavier stem fraction.
10. A method of processing leaf tobacco substantially as hereinbefore described with reference to, and as illustrated in the accompanying drawing.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08328686A GB2131671B (en) | 1982-10-28 | 1983-10-27 | Tobacco leaf processing |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8230812 | 1982-10-28 | ||
GB08328686A GB2131671B (en) | 1982-10-28 | 1983-10-27 | Tobacco leaf processing |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8328686D0 GB8328686D0 (en) | 1983-11-30 |
GB2131671A true GB2131671A (en) | 1984-06-27 |
GB2131671B GB2131671B (en) | 1986-04-16 |
Family
ID=26284241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08328686A Expired GB2131671B (en) | 1982-10-28 | 1983-10-27 | Tobacco leaf processing |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2131671B (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5148820A (en) * | 1989-09-18 | 1992-09-22 | British-American Tobacco Company Limited | Processing of tobacco leaves |
US5722431A (en) * | 1995-11-20 | 1998-03-03 | British-American Tobacco | Method and plant for treating tobacco leaves for the production of cut tobacco |
US5813413A (en) * | 1995-11-20 | 1998-09-29 | Brown & Williamson Tobacco Corporation | Method and plant for treating tobacco leaves for the production of cut tobacco |
US5826590A (en) * | 1996-09-26 | 1998-10-27 | Brown & Williamson Tobacco Corp. | Method and plant for treating tobacco stems for the production of cut tobacco |
DE102008023251A1 (en) * | 2008-05-13 | 2009-11-19 | Hauni Maschinenbau Ag | Production of cut tobacco |
CN104097810A (en) * | 2014-07-10 | 2014-10-15 | 中国烟草总公司郑州烟草研究院 | Threshing, redrying, prepressing and packaging control method based on tobacco leaf adhesion force difference |
CN104983051A (en) * | 2015-06-05 | 2015-10-21 | 湖北中烟工业有限责任公司 | Redrying processing method of single-level primarily-dried tobacco |
WO2016193147A1 (en) * | 2015-05-29 | 2016-12-08 | Philip Morris Products S.A. | Method of making tobacco cut filler |
CN113281115A (en) * | 2021-04-09 | 2021-08-20 | 河南中烟工业有限责任公司 | Control method for intelligent shearing of tobacco leaves |
CN115669979A (en) * | 2022-11-11 | 2023-02-03 | 云南省烟草农业科学研究院 | Classification formula threshing and redrying method of cinnabar smoke |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2026298A (en) * | 1978-05-23 | 1980-02-06 | Rothmans Of Pall Mall | Cutting whole leaf tobacco |
GB2078085A (en) * | 1980-03-24 | 1982-01-06 | Rothmans Of Pall Mall | Shredded tobacco stem |
-
1983
- 1983-10-27 GB GB08328686A patent/GB2131671B/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2026298A (en) * | 1978-05-23 | 1980-02-06 | Rothmans Of Pall Mall | Cutting whole leaf tobacco |
GB2078085A (en) * | 1980-03-24 | 1982-01-06 | Rothmans Of Pall Mall | Shredded tobacco stem |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5165426A (en) * | 1989-08-18 | 1992-11-24 | British-American Tobacco Company Limited | Processing of tobacco leaves |
US5148820A (en) * | 1989-09-18 | 1992-09-22 | British-American Tobacco Company Limited | Processing of tobacco leaves |
US5722431A (en) * | 1995-11-20 | 1998-03-03 | British-American Tobacco | Method and plant for treating tobacco leaves for the production of cut tobacco |
US5813413A (en) * | 1995-11-20 | 1998-09-29 | Brown & Williamson Tobacco Corporation | Method and plant for treating tobacco leaves for the production of cut tobacco |
US5826590A (en) * | 1996-09-26 | 1998-10-27 | Brown & Williamson Tobacco Corp. | Method and plant for treating tobacco stems for the production of cut tobacco |
DE102008023251A1 (en) * | 2008-05-13 | 2009-11-19 | Hauni Maschinenbau Ag | Production of cut tobacco |
CN104097810A (en) * | 2014-07-10 | 2014-10-15 | 中国烟草总公司郑州烟草研究院 | Threshing, redrying, prepressing and packaging control method based on tobacco leaf adhesion force difference |
WO2016193147A1 (en) * | 2015-05-29 | 2016-12-08 | Philip Morris Products S.A. | Method of making tobacco cut filler |
JP2018516075A (en) * | 2015-05-29 | 2018-06-21 | フィリップ・モーリス・プロダクツ・ソシエテ・アノニム | How to make tobacco cut filler |
RU2704375C2 (en) * | 2015-05-29 | 2019-10-28 | Филип Моррис Продактс С.А. | Method for production of cut tobacco filler |
US11044936B2 (en) | 2015-05-29 | 2021-06-29 | Philip Morris Products S.A. | Method of making tobacco cut filler |
US12102111B2 (en) | 2015-05-29 | 2024-10-01 | Philip Morris Products S.A. | Method of making tobacco cut filler |
CN104983051A (en) * | 2015-06-05 | 2015-10-21 | 湖北中烟工业有限责任公司 | Redrying processing method of single-level primarily-dried tobacco |
CN113281115A (en) * | 2021-04-09 | 2021-08-20 | 河南中烟工业有限责任公司 | Control method for intelligent shearing of tobacco leaves |
CN113281115B (en) * | 2021-04-09 | 2023-09-15 | 河南中烟工业有限责任公司 | Control method for intelligent tobacco leaf shearing |
CN115669979A (en) * | 2022-11-11 | 2023-02-03 | 云南省烟草农业科学研究院 | Classification formula threshing and redrying method of cinnabar smoke |
CN115669979B (en) * | 2022-11-11 | 2024-06-11 | 云南省烟草农业科学研究院 | Classification formula threshing and redrying method for cinnabar cigarettes |
Also Published As
Publication number | Publication date |
---|---|
GB2131671B (en) | 1986-04-16 |
GB8328686D0 (en) | 1983-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4566470A (en) | Tobacco leaf processing | |
US4672982A (en) | Process for the production of a smoking material from cigarette maker winnowings and apparatus | |
US4233996A (en) | Cutting leaf tobacco | |
US3219042A (en) | Method of treating tobacco for producing a tobacco article | |
US4880018A (en) | Extruded tobacco materials | |
US4646764A (en) | Process for providing roll reconstituted tobacco material | |
US6595216B1 (en) | Method of cutting sheets of reconstituted tobacco | |
HU212507B (en) | A method of processing tobacco leaf, smoking material and smoking articles containing it | |
US2613673A (en) | Tobacco sheet material and method of producing the same | |
EP0233046A2 (en) | Process for reclaiming tobacco | |
GB2131671A (en) | Tobacco leaf processing | |
US3204641A (en) | Methods of processing tobacco leaf stem material | |
KR20180013865A (en) | How to make cigarette orchards | |
US5564444A (en) | Processing tobacco leaf stem | |
JPH09163966A (en) | Tobacco | |
US4449540A (en) | Separation of lamina from stems in baled tobacco | |
US4195646A (en) | Process for shredding tobacco stems | |
US4074722A (en) | Smokable tobacco products and manufacturing methods therefor | |
US4754767A (en) | Tobacco material processing | |
SE9203465D0 (en) | CIGARETT AND PROCEDURES FOR PREPARING THEREOF | |
US3556112A (en) | Method of making sliced puffed stems for a cigarette filler | |
EP0774212B1 (en) | Method and device for the processing of tobacco leaves for the manufacturing of tobacco cut filler | |
US6877516B2 (en) | Apparatus and method for processing winnowers at a cigarette maker | |
CA2289809A1 (en) | Tobacco cutting process and apparatus | |
CA1108503A (en) | Process for shredding tobacco stems |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20001027 |