EP2111127B1 - Hochdruckformgebung für tabakmaterial - Google Patents

Hochdruckformgebung für tabakmaterial Download PDF

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Publication number
EP2111127B1
EP2111127B1 EP07856380A EP07856380A EP2111127B1 EP 2111127 B1 EP2111127 B1 EP 2111127B1 EP 07856380 A EP07856380 A EP 07856380A EP 07856380 A EP07856380 A EP 07856380A EP 2111127 B1 EP2111127 B1 EP 2111127B1
Authority
EP
European Patent Office
Prior art keywords
tobacco material
tobacco
pressure
heated
shaping tool
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.)
Active
Application number
EP07856380A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2111127A1 (de
Inventor
Dietmar Franke
Gerald Schmekel
Uwe Werner Ehling
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.)
British American Tobacco Germany GmbH
Original Assignee
British American Tobacco Germany GmbH
BAT Cigarettenfabriken GmbH
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 British American Tobacco Germany GmbH, BAT Cigarettenfabriken GmbH filed Critical British American Tobacco Germany GmbH
Publication of EP2111127A1 publication Critical patent/EP2111127A1/de
Application granted granted Critical
Publication of EP2111127B1 publication Critical patent/EP2111127B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products

Definitions

  • the present invention relates to the high pressure molding of tobacco material. Specifically, it relates to the production of shredded tobacco material or fibrous tobacco material which can be used as a product for the manufacture of smoking articles.
  • Rib processing processes in which the ribs are processed into tobacco foil, for example, from DE 40 05 656 C2 and the DE 43 25 497 A1 known. Such tobacco sheet processes produce products with moderate to poor fillability and sensorics. From the DE 100 65 132 A1 For example, a process for producing agglomerates is known in which larger particle complexes are prepared from the smallest tobacco particles. In this case, binders must be used, and for the processing of coarser tobacco material (such as ribs or winnowings), such a process is not suitable.
  • the DE 10 2004 059 388 A1 describes the defibration of tobacco material, in particular rib or winnowing material.
  • the tobacco raw material is heated and brought to an elevated pressure, with a screw conveyor, at the outlet of which there is a shearing gap.
  • a screw conveyor at the outlet of which there is a shearing gap.
  • a tobacco material quality is to be provided which readily complies with the mechanical production of cigarettes and in particular even meets the requirements for a tobacco material for the self-production of cigarettes.
  • the wear on devices of the prior art should be minimized.
  • the tobacco raw material may principally comprise a coarse tobacco material, in particular having a particle size of more than 2 mm. It can be a tobacco rib material or a winnowing material, in particular with a rib size of more than 2 mm. It should be noted that tobacco materials such as pipe fins, winnowings, short stems or stem fibers but also scraps (small leaf tobacco particles), other small tobacco particles, tobacco dust or a mixture of the components mentioned can be used.
  • the pumping of the tobacco material to the second elevated pressure is carried out according to an embodiment of the invention without substantially increasing the temperature of the material.
  • a pumping operation allows such an approach.
  • the tobacco starting material is heated to a temperature of 60 to 180 ° C, in particular 100 to 140 ° C and brought to a pressure of 10 to 200 bar, in particular 1 to 100 bar, especially 1 to 50 bar in the first stage ,
  • a pressure of 100 to 700 bar can then be achieved according to the present invention, in particular 200 to 700 bar and especially more than 200 bar to 700 bar.
  • the relaxation of the tobacco material takes place when passing through the forming tool to atmospheric pressure and it is done in particular by a controlled flash evaporation.
  • the tobacco material as it passes through the forming tool, is fiber-shaped, in particular defibered, and the forming tool may be, for example, an outlet gap, a shear gap, a die or a die. Due to the process conditions that can be achieved by pumping to the second elevated pressure, the risk of blockage can be avoided, and the choice of tools becomes more free great advantage is, of course, because the tobacco material form to be set can also be chosen more freely.
  • the tobacco material may be used immediately after further processing as a smoking article material, especially if the tobacco source material is a winnowing material. However, it can also be subjected to a classification, especially if the starting material is a coarse rib material. In this case, the rejected materials would be subjected to the process according to the invention again and the non-segregated residue can be fed directly to further processing as a smoking material.
  • the mechanical pump may be a hydrostatic positive displacement pump, in particular a gear pump.
  • the forming tool is a tool which fibrously shapes, in particular shreds, the tobacco material and may specifically comprise an outlet gap, a shear gap, a die or a die.
  • the pressure chamber or the pressure chamber forms a heatable screw conveyor, in particular a plug screw, which serves as a conveyor for conveying the tobacco material from the inlet to the outlet.
  • the device according to the invention has a piebald conveyor, which is identified by the reference numeral 1.
  • the screw conveyor has a screw conveyor 5, which is mounted on a shaft 3 and accommodated in a housing 2 (pressure chamber).
  • tobacco ribs are fed into the screw conveyor 1 and conveyed by the screw 5, namely to the left to the outlet 6 of the screw conveyor 1 out.
  • the conditioned fin material is pre-shredded and mechanically brought to an elevated pressure at the outlet, which can be up to 200 bar.
  • the gear pump 7 connects, which stands here as an example of a hydrostatic positive displacement pump.
  • the fin material initially enters the pump 7 via the inlet 8 provided in the housing 9, and it is then further conveyed and compressed by the two pump gears 11 and 13.
  • the compression that is, the pressure increase takes place by the reduction of the receiving spaces between the gears, and so reaches highly compressed or under very high pressure (second increased pressure) standing tobacco material pump output 10.
  • the pressures at the pump outlet 10 and the pump input 8 are respectively measured and checked by the pressure measuring sensors 17 and 15. By adjusting the operation of the pump can be influenced on these pressures and optionally carried out a correction.
  • the tobacco material enters the forming tool, which in FIG. 1 has been provided with the reference numeral 23. It consists of an inner cone 19, which is statically arranged and an outer cone 21, which may be mounted statically but also axially displaceable.
  • the inner cone 19 and the outer cone 21 of the tool form a gap 25 through which the tobacco material under high pressure can escape from the device, wherein it is relaxed by flash evaporation and wherein the desired fiber structure of the material is established.
  • the present invention thus relates - as it is carried out in the illustrated device - the defibration (shredding) and reshaping of tobacco materials to apply tobacco particles fibrous.
  • the process is characterized by a particularly low-wear mode of operation and increased process flexibility. Tobacco coarse particles are crushed, optionally formed together with existing or added in the starting material or added small or very small parts as needed in the tool and applied as fibers. It is particularly advantageous to regard the robustness of such an apparatus in relation to the wear-resistant properties of the material to be processed, in particular because restrictions with regard to the choice of formulation can be eliminated.
  • the tobacco material produced by a method or apparatus of the present invention can be used directly for the manufacture of smoking articles; it does not differ in shape and color from cut tobacco.
  • the invention opens up the production of smoking article products for the self-production of cigarettes (also called roll-your-own products (RYO) or make-your-own products (MYO)) with small cutting width, since the choice of tools flexible and especially tools with very small channels can be used, which are usable at very high pressures.
  • the invention is based inter alia on the following considerations:
  • Such pressure can basically not be applied by a screw conveyor (extruder).
  • backflow sum of pressure flow and leakage flow
  • drag flow is dominant and thus would tear off the promotion.
  • backflow is structurally unavoidable.
  • the ratio of product backflow to product delivery is significantly influenced by the necessary pressure at the chamber outlet, the wear pattern of the device (screw) to flow through the shear channel and by the existing material properties of the tobacco material (viscosity).
  • Gear pumps are hydrostatic positive displacement pumps and operate on the principle of volumetrically completed pumping. By this principle, very high pressures can be generated in the promotion of viscous masses with moderate increases in temperature.
  • the material should be fed to the pump (lightly) with a degree of pressure to achieve a 100% filling level, and a screw conveyor is very well suited for the production of this form.
  • Liquid-like materials such as pastes, paps, doughs can be characterized by viscosities similar to liquids.
  • Tobacco materials are now solids which, after water mixing, temperature elevation and shearing, are usually also given pseudoplastic flow properties and thus can be conveyed in a positive-displacement pump. These basic flow properties are produced in the screw conveyor.
  • a typical flow curve of a plasticized tobacco material is the FIG. 5
  • the invention utilizes this pseudo-viscosity to promote and pressurize the tobacco material, although in fact it does not produce a homogeneous slurry, such as in tobacco sheet manufacture.
  • tool 23 has in the axis direction to each other or movable away gap walls, which form a shear gap.
  • the two tool parts (inner cone 19 and outer cone 21) are biased towards each other, and the indicated in the drawing profiling is the basis for the shaping and influencing the circumferentially-forming tobacco fibers.
  • a rotation of the two tool parts against each other can be carried out (as in the prior art according to the DE 10 2004 059 388 A1 ), but surprisingly it is not necessary. From this realization, it is clear that for the first time it is possible to use matrices, static nozzles and the like as a tool, since a feared blockage and associated pressure increases (reduction of the free cross sections) become manageable.
  • the combination of screw conveyor and pump, in particular positive displacement pump, can also help to compensate for unavoidable wear.
  • the conveying behavior of the screw conveyor depends on the state of wear, the final pressure and the material properties. It is possible by the present inventive design to distribute the necessary pressure to flow through the tool differently between screw conveyor and positive displacement pump. With a deterioration of the wear pattern, for example, the final pressure of the screw conveyor can be reduced, in which case the positive displacement pump automatically introduces the necessary pressure increase to the flow of the tool. Such behavior is in the operating curve of FIG. 6 shown. For this purpose, the measurements with the sensors 15, 17 in FIG. 1 performed.
  • a recipe consisting of 70% Winnowings + 30% tobacco dust is used in the apparatus according to FIG. 1 treated with the following parameters: process measurand comparison Trial 2 inlet humidity [%] 22 22 humidity at outlet [%] 15 15 Final pressure screw conveyor [bar] 50 50 Final pressure gear pump [bar] 120 200 Temperature screw conveyor outlet [° C] 140 140 Temperature outlet gear pump [° C] 150 150 mass flow [kg / h] 150 250 product Fillability corrected * (starting material) [ml / g] 2.5 2.5 Fillability corrected * (finished material) [ml / g] 4.5 4.5 * Correction of tobacco moisture during the measurement
  • the mass flow could be increased by about 60% due to the additional pressure input by the gear pump with the device according to the invention and thereby an increase in efficiency can be achieved.

Landscapes

  • Manufacture Of Tobacco Products (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
EP07856380A 2007-01-18 2007-12-05 Hochdruckformgebung für tabakmaterial Active EP2111127B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007002687A DE102007002687B4 (de) 2007-01-18 2007-01-18 Hochdruckformgebung für Tabakmaterial
PCT/EP2007/010552 WO2008086843A1 (de) 2007-01-18 2007-12-05 Hochdruckformgebung für tabakmaterial

Publications (2)

Publication Number Publication Date
EP2111127A1 EP2111127A1 (de) 2009-10-28
EP2111127B1 true EP2111127B1 (de) 2012-02-29

Family

ID=39232938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07856380A Active EP2111127B1 (de) 2007-01-18 2007-12-05 Hochdruckformgebung für tabakmaterial

Country Status (15)

Country Link
US (1) US8418697B2 (pt)
EP (1) EP2111127B1 (pt)
CN (1) CN101583289B (pt)
AR (1) AR064931A1 (pt)
AT (1) ATE547014T1 (pt)
AU (1) AU2007344498B2 (pt)
BR (1) BRPI0718033B1 (pt)
CA (1) CA2669929C (pt)
CL (1) CL2008000002A1 (pt)
DE (1) DE102007002687B4 (pt)
ES (1) ES2378836T3 (pt)
MY (1) MY151775A (pt)
NZ (1) NZ576074A (pt)
RU (1) RU2422057C2 (pt)
WO (1) WO2008086843A1 (pt)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063613A1 (de) * 2008-12-18 2010-07-01 British American Tobacco (Germany) Gmbh Form- und Größengebung bei cellulosehaltigen Pflanzenmaterialien
CN103222672B (zh) * 2013-04-19 2015-01-21 江苏华正环保科技有限公司 一种烟草加工废弃物回收工艺及装置
DE102021123238A1 (de) * 2020-09-14 2022-03-17 British American Tobacco Exports Limited Verfahren zum Verarbeiten von Tabakfeinstoffen zu einem nicht-kontinuierlichen Tabakmaterial

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1315661A (en) * 1969-06-18 1973-05-02 British Insulated Callenders Plastics extrusion process and apparatus
US3792010A (en) * 1972-03-27 1974-02-12 Ethicon Inc Plasticized polyester sutures
US3968804A (en) * 1974-05-20 1976-07-13 Amf Incorporated Extruded tobacco sheet
US4880018A (en) * 1986-02-05 1989-11-14 R. J. Reynolds Tobacco Company Extruded tobacco materials
DE4005656C2 (de) 1990-02-22 1994-05-26 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Herstellung einer Tabak-Folie
CN1097116A (zh) * 1993-07-06 1995-01-11 赵学义 一次挤压成型再生烟丝生产工艺及其螺旋挤压成型机
DE4325497A1 (de) 1993-07-29 1995-02-02 Friedrich Priehs Verfahren zur Herstellung eines rauchbaren Tabakproduktes
EP0894594A3 (en) * 1997-07-24 1999-03-10 Mitsubishi Chemical MKV Company Process for producing granulated material or molded product of vinyl chloride-based resin
DE10065132A1 (de) 2000-12-29 2002-07-04 Hauni Maschinenbau Ag Verfahren zur Herstellung von Agglomeraten und entsprechendes Agglomerat
DE10304629B4 (de) * 2003-02-05 2008-10-30 British American Tobacco (Germany) Gmbh Druckkonditionierungsverfahren
DE102004059388B4 (de) 2004-12-09 2006-11-30 British American Tobacco (Germany) Gmbh Zerfaserung von Tabakmaterial
DE102005006117B4 (de) * 2005-02-10 2007-01-11 British American Tobacco (Germany) Gmbh Verarbeitung von Tabakmaterialien mit hohem Anteil an Tabakkleinteilen
CN2852722Y (zh) * 2005-12-01 2007-01-03 将军烟草集团有限公司 烟草压块机进料机构

Also Published As

Publication number Publication date
DE102007002687A1 (de) 2008-07-31
BRPI0718033A2 (pt) 2013-11-12
RU2009122818A (ru) 2011-02-27
ATE547014T1 (de) 2012-03-15
CA2669929C (en) 2011-11-15
CN101583289B (zh) 2013-04-03
EP2111127A1 (de) 2009-10-28
CL2008000002A1 (es) 2008-07-25
US20100139675A1 (en) 2010-06-10
ES2378836T3 (es) 2012-04-18
AU2007344498A1 (en) 2008-07-24
CN101583289A (zh) 2009-11-18
NZ576074A (en) 2011-08-26
AU2007344498B2 (en) 2010-12-16
DE102007002687B4 (de) 2008-10-30
BRPI0718033B1 (pt) 2018-07-17
US8418697B2 (en) 2013-04-16
CA2669929A1 (en) 2008-07-24
AR064931A1 (es) 2009-05-06
MY151775A (en) 2014-07-14
WO2008086843A1 (de) 2008-07-24
RU2422057C2 (ru) 2011-06-27

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