EP0400131A1 - Procede et dispositif de gonflement de tabac - Google Patents

Procede et dispositif de gonflement de tabac

Info

Publication number
EP0400131A1
EP0400131A1 EP19900900170 EP90900170A EP0400131A1 EP 0400131 A1 EP0400131 A1 EP 0400131A1 EP 19900900170 EP19900900170 EP 19900900170 EP 90900170 A EP90900170 A EP 90900170A EP 0400131 A1 EP0400131 A1 EP 0400131A1
Authority
EP
European Patent Office
Prior art keywords
tobacco
pressure reduction
pressure
range
impregnated
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.)
Withdrawn
Application number
EP19900900170
Other languages
German (de)
English (en)
Inventor
Laszlo Dr. Egri
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.)
Individual
Original Assignee
Individual
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 claimed from DE19883841915 external-priority patent/DE3841915C1/de
Application filed by Individual filed Critical Individual
Publication of EP0400131A1 publication Critical patent/EP0400131A1/fr
Withdrawn legal-status Critical Current

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 pressure of the carbon dioxide / tobacco system is reduced substantially to atmospheric pressure and the tobacco is then transferred to an expansion zone in, for example, 2 to 5 minutes and then heated to a temperature in the range of approximately 100 to 370 ° C. to add the carbon dioxide remove and expand here through the tobacco.
  • parameters are used in the impregnation of the tobacco (pressure about 18 to 52.6 bar near the saturation temperature temperature of the carbon dioxide, but a temperature not below -23 ° C; Moisture content of the tobacco 8 to 22%), which ensure that all carbon dioxide is in the gaseous phase.
  • a method for improving the filling capacity of cut tobacco leaves or ribs in which treatment with a treatment gas consisting of nitrogen and / or argon at pressures of 50 to 1000 bar in an autoclave , decompressed and then heated, the loading of the reactor with tobacco or the treatment gas and / or the decompression being carried out in such a way that the discharged tobacco and the subsequent heat treatment are supplied with an initial temperature of less than 0 ° C.
  • the treatment gas and the decompression can be cascaded with several autoclaves in such a way that in order to build up the pressure of the treatment gas in one of the autoclaves, a treatment gas under higher pressure is gradually used than in one of the other autoclaves.
  • GB-OS 2 044 596 describes a method and a device for expanding tobacco in which tobacco which contains frozen carbon dioxide is fed to an expansion chamber in which it is expanded by hot gas. The frozen carbon dioxide is sublimed. Gas and expanded tobacco enter a separator from which the tobacco passes through a valve (Rotary valve block arrangement or metering arrangement) is deducted.
  • a valve Rotary valve block arrangement or metering arrangement
  • GB-OS 2 115 677 describes a method for expanding tobacco, in which step tobacco
  • the frozen tobacco is rapidly heated to a temperature in the range of about 150 to 440 ° C (200 to 600 ° F; claim 5). Since the tobacco must therefore be cooled to below the freezing point of its moisture, this process has the disadvantage of considerable energy consumption.
  • EP-OS 0 328 676 describes a process for expanding tobacco, in which tobacco is moistened (column 5 line 22), at a temperature in the range from -40 to +15 ° C (column 7 line 16) of a carbon dioxide gas atmosphere (Column 3 line 20) with an overpressure in the range of about 10 ' to 50 bar (10 to
  • Chambered rotors are proposed as pressure locks. This prior art can also be improved.
  • the object of the invention is to improve the above-described prior art.
  • the object on which the invention is based is now achieved by a process for expanding tobacco by impregnation with gas and subsequent heat treatment, in which tobacco with a moisture content in the range from 20 to 40% by weight (based on the Tobacco dry weight) at a temperature in the range from about -10 to 0 ° C to a carbon dioxide gas atmosphere with an overpressure in the range from 3 to 17 bar and emptied from the overpressure system under controlled pressure reduction into a heat treatment system.
  • the amount of carbon dioxide added to the tobacco can be determined on the order of magnitude from the solubility curve of carbon dioxide in water, whereby it must be taken into account that cell juice - depending on its pH value - dissolves slightly less gaseous carbon dioxide than pure water.
  • the object on which the invention is based is achieved by a method for expanding Ren of tobacco by impregnation with gas and subsequent heat treatment, in which tobacco with a moisture content in the range of 20 to 40 wt .-% (based on the tobacco dry weight) at a temperature in the range of about -10 to +10 ° exposed to a carbon dioxide gas atmosphere with an overpressure in the range of 3 to 17 bar, the pressure reduced in a passage which can be blocked off by the overpressure system, the impregnated tobacco being heated during the pressure reduction, and emptied into a heat treatment system.
  • the object on which the invention is based is achieved by a method for expanding tobacco by impregnation and subsequent heat treatment, in which the tobacco is impregnated with a gaseous impregnation medium such as air under atmospheric pressure, the pressure in one of the pressure -Degradable system breaks down passage, wherein the impregnated tobacco is heated during the pressure reduction, and emptied into a heat treatment system.
  • a gaseous impregnation medium such as air under atmospheric pressure
  • the process of the first and second embodiment can be characterized in that the tobacco is impregnated with up to about 1% by weight, preferably 0.5 to 1% by weight, of carbon dioxide (based on the tobacco dry weight) lets record.
  • the method of the first and second embodiment can be characterized in that tobacco with a moisture content in the range from 20 to 33% by weight and in particular 25 to 33 Ge. -% impregnated.
  • the method of the second embodiment can in particular be characterized in that the tobacco is impregnated at a temperature in the range from -10 to +5 ° C or -7 to +5 ° C.
  • the method of the second embodiment can in particular be characterized in that the tobacco is at a Impregnated temperature in the range of about -10 to 0 ° C and in particular -10 to -5 »° C.
  • the method of the first and second embodiment can in particular be characterized in that the tobacco is impregnated with an excess pressure in the range from 3 to 10 bar.
  • the method of the second and third embodiment can in particular be characterized in that the impregnated tobacco for heat treatment during pressure reduction is exposed to microwaves, an alternating electric field, radiant heat and contact heat.
  • the impregnated tobacco can be exposed to hot gas, such as hot air or hot carbon dioxide, during pressure reduction, which can include steam and preferably has a temperature in the range from 60 to 220 ° C., for example 150 to 220 ° C.
  • the impregnated tobacco can also be exposed to steam during pressure reduction, which preferably has a temperature in the range from 60 to 220 ° C., for example from 150 to 220 ° C.
  • the pressure reduction can be carried out in one step or in several steps, for example in two steps.
  • the pressure can be reduced in one step or in two steps in a time in the range from 0.1 to 5 s. Or you can reduce the pressure in more than one stage and provide a dwell time in the range of 0.1 to 3 s for each stage. For example, you can reduce the pressure in two stages and reduce it to a pressure in the range of 2 to 4 bar in the first stage. Or in a first stage the pressure is reduced from about 10 bar to about 3.5 bar and in a second stage to atmospheric pressure or negative atmospheric pressure. If the pressure reduction is carried out in several stages, heat treatment can be provided for all pressure reduction stages or only for a part thereof.
  • the pressure reduction stage At the respective pressure reduction stage, one can work cyclically in such a way that the pressure is first raised to the value below which the tobacco to be introduced into the pressure reduction stage is located, then tobacco is introduced and the pressure is reduced, the tobacco is removed from the pressure reduction stage and a new cycle begins.
  • the gas escaping from the pressure reduction stage during the pressure reduction in particular impregnation gas and / or hot gas, can be recycled to the pressure reduction stage.
  • the heat treatment after pressure reduction can be carried out at atmospheric pressure or under atmospheric pressure.
  • the heat treatment can be carried out with a hot gas, such as hot air, which can comprise steam, or steam.
  • Hot gas or steam at a temperature in the range from 60 to 300 ° C., preferably from 120 to 300 ° C., in particular 160 to 220 ° C. and, for example, 80 to 220 ° C., can be used for this purpose.
  • shredded leaf tobacco or leaf tobacco can be used as tobacco.
  • the object on which the invention is based is achieved by a device for producing expanded tobacco, in particular for carrying out the three above-mentioned embodiments of the method according to the invention, which comprises a heat-insulated and / or coolable impregnation device and a subsequent arranged heat treatment device exists or comprises these.
  • the device according to the invention can be characterized in that the impregnation device comprises an autoclave or several autoclaves which can be arranged in parallel or in series.
  • the impregnation device comprises an autoclave or several autoclaves which can be arranged in parallel or in series.
  • two autoclaves can be provided, which can be loaded with tobacco to be impregnated or emptied of impregnated tobacco.
  • Each autoclave can be provided with a mixer, for example a paddle mixer, to loosen the tobacco to be impregnated. So every autoclave can be equipped with a bucket provided rotatable drum, the drum and optionally the autoclave can be arranged approximately horizontally or inclined. Alternatively, each autoclave can be designed as a drum and arranged approximately horizontally or inclined.
  • the impregnation device is connected to the heating device via a pressure reduction device. It is advantageous if the heat treatment device connects directly to the pressure reduction device.
  • the pressure reduction device can have approximately the shape of a tube. Furthermore, the pressure reduction device can be arranged approximately vertically.
  • the pressure reduction device can be provided with a pressure lock or a slide at least at its inlet and at its outlet.
  • the pressure reduction device can also have a lock at the inlet, a lock at the outlet and a further lock arranged between the two locks.
  • the pressure reduction device can be provided with a generator for microwaves or for an alternating electric field or with at least one inlet for a heated gaseous medium.
  • the inlets for the heated gaseous medium can be arranged on the periphery of the tubular pressure reduction device.
  • the device according to the invention can be characterized by a circuit system comprising a pump, controller, heat exchanger and, if appropriate, storage, with the aid of which heated gaseous medium supplied to the pressure reduction device can be supplied to the circuit again after exiting the pressure reduction device.
  • the device according to the invention is provided by a pneumatic channel as a heat action device marked.
  • This pneumatic channel can be arranged approximately horizontally.
  • the pneumatic channel can be provided with an inlet for superheated steam.
  • FIG. 1 shows a schematic representation of a complete device
  • Fig. 3 is an axial section through the connecting tube between the pressure treatment device and the pneumatic channel and
  • Fig. 4 shows an axial section through a further connecting tube.
  • a pretreatment device A essentially consists of a pretreatment device A, a pressure treatment device B and a relaxation device C, which are connected in series by pressure-tight locks mi.
  • the pretreatment device A consists of a drum 2 of circular cross-section, in which a rotor 4 provided with blades 3 rotates.
  • the shaft 5 of the rotor 4 is guided at one end through the end wall of the drum 2 and driven from the outside by a motor 6 and an intermediate gear.
  • the jacket of the drum 2 is double-walled and a cooling medium can flow through it.
  • Extending into the drum 2 from above is an inlet for the tobacco material, which is designed in the form of a lock 7, in which rotatable double locking elements are arranged
  • a nozzle tube 8 extends into the drum 2 and is provided with a series of outlet nozzles through which a moistening
  • REPLACEMENT LEAF medium can be introduced into the drum. Furthermore, a gas metering line 9 opens into the drum 2, in which a pressure relief valve 10 is arranged.
  • While the inlet for the tobacco is located at one end of the drum 2 at the top, at the opposite end of the drum 2 an outlet is arranged on the bottom, which outlet is also designed as a pressure-tight lock 7 with a double blocking element.
  • This outlet forms the inlet for the pressure treatment device B, which is designed to be completely comparable to the pretreatment device A, but is additionally provided with a further gas inlet line 13 with a pressure relief valve 12.
  • the outlet of this pressure treatment device is formed by a pressure-tight lock 7a, which is equipped with a double blocking element and which will be explained in detail later.
  • This lock 7a opens into a horizontal pneumatic channel 16, into which steam flows via a line 14.
  • the pneumatic channel 16 is connected at the end of the horizontal section with a vertical section into which steam is introduced from below from a steam supply pipe 14 '.
  • the outlet of the vertical pipe section is provided with a separating lock 15 which serves to separate the tobacco from the gases flowing in the pneumatic channel 16. The tobacco T is released downwards at 17.
  • Fig. 3 shows the outlet from the pressure treatment device B, which is connected to the pneumatic channel 16, in axial section.
  • the outlet 7 comprises a tube 21, in which an upper rotary valve 22a and at a distance from it a lower rotary valve 22b are arranged.
  • These cellular wheel locks are of a known type and therefore do not need to be explained in detail. It is only
  • the tube 21 is provided with a feed device 23 which concentrically surrounds the tube 21 and through which Ga or steam can be blown into the tube 21, which in the tube 21st In the countercurrent a violent turbulence and a pressure e produce.
  • a relief tube leads to the outside, in which a relief valve 24 is located. In cooperation with the gas or steam from the inlet 23, this produces a fluidized bed in the tube 21.
  • the pipe 21 is provided with a pressure sensor P which controls the steam or gas supply and the pressure relief in the pipe 2 as a function of the position of the cell wheels of the cell wheel locks 22a and 22b by means of a control device 25 in the following way:
  • the cellular wheel sluice 22a is open and tobacco is introduced into the tube 21.
  • the pressure in the tube 21 of the medium consisting of CO 2 and steam is controlled to about 9 ba by means of valves 26 at the gas inlet 23.
  • the relief valve 24 opens; when the first cell wheel 22a is closed, the pressure in the tube 21 drops from about 9 bar to about 3 bar in a period of about 1 to 3 seconds.
  • the lower cellular wheel lock 22b opens and the tobacco falls into the horizontal pneumatic channel 16. After the lower cellular wheel lock 22b has been closed again and the upper cellular wheel lock 22a has been opened, the cycle repeats.
  • REPLACEMENT LEAF Heat treatment transport system 103 take place in cycles through the vertical connection expansion pipe 102, which is connected to the impregnation pressure chamber (A) through the upper lock (101) and to the drying part 103 through the lower lock 104.
  • the upper lock 101 only opens when the gas pressure in the connection expansion pipe 102 is approximately 10 bar, or approximately the same pressure as that prevailing in the overpressure device.
  • the lower lock 104 is then closed.
  • the opening conditions for the lower lock are: 1 bar gas pressure and the upper lock closed.
  • the impregnated tobacco is transported through the upper lock into the connection expansion pipe 102 and falls through the lower lock 104 into the drying area 103.
  • connection expansion pipe 102 When the connection expansion pipe 102 is empty, both locks are closed and by opening the inlet valve 110, the connection expansion pipe 102 is connected to the reservoir 113 via the inlet opening 105. This results in an increase in pressure in the pipe 102 up to about 10 bar. Then the inlet valve 110 is closed and the tobacco falls into the pipe by briefly opening the upper lock 101. After closing the upper lock 101, the outlet valve 108 is opened and the gas can flow through the outlet openings 106 to the pump 11. The pump increases the gas pressure and fills the accumulator 113. The pressure decrease in the connection expansion pipe 102 is carried out continuously by controlling the outlet valve 108.
  • the injection phases are controlled by the injection valve 109 and are only very short-term.
  • the CO2 gas to be blown in is removed from the stores 113 and heated to the corresponding temperature in a heater 114.
  • connection expansion pipe 102 When the gas pressure in the connection expansion pipe 102 has dropped to 1 bar, the lower lock 104 is opened and the tobacco is removed from the connection expansion pipe.
  • the time between the last injection of hot gas and the opening of the lower lock is chosen so that the tobacco has fallen into the lock chamber.
  • connection expansion pipe between the outlet lock and the horizontal heat treatment transport system can be supplemented with a tobacco storage zone (in not shown in the drawing).
  • the tobacco can be continuously fed, transported and dried in the heat treatment transport system by the steam flowing into it with the help of a venturi nozzle
  • This system gives the cooled tobacco elasticity and, thanks to the controlled pressure relief and optimized simultaneous heat transfer, it can achieve an increased expansion effect without any particular breakage.
  • the tobacco was passed through the second blocking member of the intermediate space into the horizontal pneumatic tube, in which the tobacco was first transported horizontally in tube 16 by means of steam supply at 140 ° C. from tube 14 and then vertically by means of steam supply from tube 14 ′ and thus twice was accelerated and freed of steam and gas by the steam separator 15 and discharged through the line 17 in an expanded and dry state.
  • a mixture of sliced burley tobacco was evenly moistened to 35% moisture with ice water.
  • a Dop ⁇ pelmantel provided fixed drum of the pre-treatment unit A, which is provided in its interior with rotating blades, has been arranged on the bottom side inlet openings with chilled on '-15 * C gaseous carbon dioxide at a ge rings flow rate of 2 m / s filled until there is no air from the tap located in the upper part of the device
  • the double jacket was filled with a cooling solution (brine) which cooled the jacket water in contact with the tobacco to -7 ° C. by recirculation.
  • a cooling solution (brine) which cooled the jacket water in contact with the tobacco to -7 ° C. by recirculation.
  • the tobacco was dosed into the pressure treatment device B during the rotation of the guide vanes.
  • the supply of cooled gaseous carbon dioxide increased the overpressure to 10 bar.
  • the pressure treatment device B was automatically brought into an inclined position by means of a hydraulic lifting unit.
  • the impregnated tobacco was metered continuously into the horizontal pneumatic channel 16, where it was exposed to the expansion by repeated speed acceleration using a steam of 140 'C within less than 1 s.
  • Superheated steam was supplied through the vertically connected drying pipeline 14 'at a higher flow rate than when the tobacco was transported horizontally, and the tobacco left the device via the steam separator 15 with a moisture content of 13%.
  • the treated tobacco showed an increase in filling capacity, measured with a Borgwaldt densimeter, of 30% with the same moisture content (13%).
  • Sliced virginia tobacco was brought to a moisture content of 30% with ice water in pretreatment device A.
  • the tobacco was kept at +6 'C by a cooling sole.
  • an excess pressure of 3 bar was maintained for 5 minutes by supplying carbon dioxide.
  • the tobacco was then emptied suddenly from the pressure treatment device B into the horizontal thermal pneumatic transport channel 16, from which the tobacco was guided with steam at 140 ° C. into a vertical transport channel. In this channel, the tobacco was transported with a mixture of hot air and steam for drying in a tower provided with a double jacket, and it then left this tower with a moisture content of 12%.
  • the filling value measured with a Borgwaldt densimeter at 13% tobacco moisture showed an improvement of 8% compared to the untreated tobacco.
  • Example 2 The procedure was as described in Example 1 with the only difference that in the thermal treatment phase the tobacco was treated with a mixture of steam and carbon dioxide gas of 200 ° C.
  • the filling capacity value measured with a Berwaldt densimeter at 13% tobacco moisture showed an improvement of 55% compared to the untreated tobacco.
  • Virginia tobacco was moistened to ice cold water to 25% moisture content. Tobacco was in a pressure device from below at a flow rate of about 2 / sec. cold carbon dioxide gas is passed through an outlet valve arranged on the upper part of the device, but only air
  • REPLACEMENT LEAF Carbon dioxide began to flow out.
  • the device which is provided with an arranged at its upper part tobacco inlet and lower part of the outlet points with each supply and discharge channels, was kept under a relatively constant positive pressure in that the further supply of CO2 gas was carried out with practically closed locking organs .
  • the overpressure was set at 9 bar.
  • the tobacco temperature was cooled to -6 ° C. by pre-cooling and by the double jacket enveloping the pressure device, in which a cooling solution (brine) was recirculated.
  • the tobacco was continuously moved forward in the printing device by a mixing and transport device.
  • the tobacco left the pressure device through the discharge locking and metering elements in such a way that the pressure drop in the vertical discharge channel through a valve in the space to 4 bar for 3 seconds and then from this area in one with the vertical connecting duct, an airtight, directly connected horizontal heat treatment duct fell, where it was entrained by steam flow at a temperature of 140 ° C.
  • the solubility curve of the CO2 gas in water about 0.7 to 0.8 percent by weight CO2 gas was added to the tobacco under the above impregnation conditions.
  • the tobacco was pneumatically transported in a horizontal tube which ended in a vertical tube, where it was dried by hot gas at a temperature of 160 ° C. to 15% moisture content.
  • the filling capacity measurement of the treated and untreated tobacco was carried out at 13% moisture content in a Borgwaldt densimeter.
  • the improvement in filling capacity showed 41% compared to the control.
  • a mixture of Burley and Virginia tobacco was moistened to 32% moisture.
  • the tobacco was flowed through in the double-walled pressure device with cooled CO 2 gas (-l ⁇ 'C) until the pressure rose to 9.5 bar.
  • a cooling sole was located in the double wall, so that the tobacco had a temperature of -9 ° C. for 4 minutes with constant mixing.
  • the tobacco had a CO2 after the solubility curve of CO 2 gas in the water.
  • the cold tobacco was then metered in within 2 seconds through a vertical connecting pipe in an overpressure range of 3 bar, which was then subjected directly to a steam and hot gas treatment by excluding the outside atmosphere the expansion and Trock ⁇ voltage in the pneumatic heat treatment system at a Tem ⁇ temperature of 200 * C had the tobacco, a moisture of 10%.
  • the filling capacity of the Borgwaldt Densi eter was determined. against ⁇ Above the untreated tobacco with the same moisture content, a full capacity improvement of 59% was measured.
  • a mixture of Burley and Virginia sliced tobacco was moistened to 23% moisture.
  • the procedure was as in Example 6, with the difference that the overpressure used for the impregnation was only 7 bar instead of 9.5 bar.
  • the Ta ⁇ baktemperatur showed after cooling - ⁇ * C.
  • the Trocknungstempe- temperature was 170 * C and was the final moisture content of the tobacco 13%.
  • Example 7 The same tobacco was treated in the same way as in Example 7.
  • the tobacco moisture was 25%, the impregnation pressure 7 bar, the tobacco temperature during the impregnation + 5'C.
  • the drying temperature 160 * C the final moisture of the tobacco 13%.
  • the improvement in fullness at 13% moisture showed 30% compared to the control at the same moisture.

Landscapes

  • Manufacture Of Tobacco Products (AREA)

Abstract

Procédé et dispositif de gonflement de tabac par imprégnation.
EP19900900170 1988-12-13 1989-12-13 Procede et dispositif de gonflement de tabac Withdrawn EP0400131A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19883841915 DE3841915C1 (en) 1988-12-13 1988-12-13 Tobacco heat treatment plant - incorporates drums with wetting jets and revolving blades
DE3841915 1988-12-13
CH316589 1989-09-01
CH3165/89 1989-09-01

Publications (1)

Publication Number Publication Date
EP0400131A1 true EP0400131A1 (fr) 1990-12-05

Family

ID=25692355

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900900170 Withdrawn EP0400131A1 (fr) 1988-12-13 1989-12-13 Procede et dispositif de gonflement de tabac

Country Status (4)

Country Link
EP (1) EP0400131A1 (fr)
AU (1) AU4803090A (fr)
CA (1) CA2005332A1 (fr)
WO (1) WO1990006695A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0394665A (ja) * 1989-06-19 1991-04-19 R J Reynolds Tobacco Co タバコ材処理方法及び装置
JP3140039B2 (ja) * 1990-11-07 2001-03-05 日本たばこ産業株式会社 たばこ原料の気流乾燥方法およびその装置
US5251649A (en) * 1991-06-18 1993-10-12 Philip Morris Incorporated Process for impregnation and expansion of tobacco
US5259403A (en) * 1992-03-18 1993-11-09 R. J. Reynolds Tobacco Company Process and apparatus for expanding tobacco cut filler
SK139993A3 (en) * 1992-12-17 1994-09-07 Philip Morris Prod Method of impregnation and expanding of tobacco and device for its performing
DE10038114A1 (de) * 2000-08-04 2002-02-21 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Konditionierung von zerkleinerten Tabakmaterialien
DE10046124C1 (de) * 2000-09-15 2002-07-04 Reemtsma H F & Ph Verfahren zur Verbesserung der Füllfähigkeit von Tabak
DE10304629B4 (de) * 2003-02-05 2008-10-30 British American Tobacco (Germany) Gmbh Druckkonditionierungsverfahren

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU525910B2 (en) * 1978-03-29 1982-12-09 Philip Morris Products Inc. Puffing tobacco leaves
US4561453A (en) * 1981-12-16 1985-12-31 Rothchild Ronald D Treatment of tobacco under pressure in a continuous process
GB2115677A (en) * 1982-01-08 1983-09-14 Ronald D Rothchild A method for expanding tobacco
CA1328064C (fr) * 1987-07-27 1994-03-29 Masao Kobari Appareil servant a gonfler de matieres de consommation

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9006695A1 *

Also Published As

Publication number Publication date
CA2005332A1 (fr) 1990-06-13
AU4803090A (en) 1990-07-10
WO1990006695A1 (fr) 1990-06-28

Similar Documents

Publication Publication Date Title
DE3725309C2 (de) Verfahren und Vorrichtung zum Expandieren von Tabak
DE2841874A1 (de) Verfahren zum herabsetzen des feuchtigkeitsgehalts ausgedehnten tabaks
EP1177730B1 (fr) Procédé et dispositif pour le conditionnement de produits de tabac découpés
DE2011527B2 (de) Verfahren zur Erhöhung der Füllkapazität von Tabak
DE19535587C2 (de) Verfahren und Vorrichtung zum Abreichern von Nitrat aus Tabakrippen
DE2503636A1 (de) Verfahren und vorrichtung zum ausdehnen von organischen substanzen
DE1567852A1 (de) Vorrichtung und Verfahren zur Herstellung von Aktivkohle
EP1317191B1 (fr) Procede pour ameliorer le pouvoir de remplissage du tabac
EP0400131A1 (fr) Procede et dispositif de gonflement de tabac
EP0123116B1 (fr) Procédé pour améliorer l'aptitude à charge du tabac
DE19909318C2 (de) Verfahren und Vorrichtung zur Expansion von Tabakmaterial
DE3414625C2 (fr)
EP0455976B1 (fr) Procédé pour sécher des produits biologiques en morceaux
DE3908937A1 (de) Verfahren zum herstellen von schnittabak
DE2606368A1 (de) Verfahren zur herstellung aktiver kohlen und einrichtungn zur durchfuehrung des verfahrens
EP0515877A2 (fr) Procédé de séchage pour augmenter la capacité de remplissage de matériau de tabac
DE2731932C2 (fr)
DE2731931C2 (fr)
WO2007134879A1 (fr) Séchoir électrique pour sécher un produit de tabac fibreux
DE4010892C2 (fr)
DE3841915C1 (en) Tobacco heat treatment plant - incorporates drums with wetting jets and revolving blades
DE2834501A1 (de) Verfahren zum expandieren von tabak
EP0660059A1 (fr) Dispositif pour sécher du matériau en vrac
DE3935774C2 (de) Verfahren zur Verbesserung des Temperaturverlaufs bei der Blähung von Tabak
DE3634177A1 (de) Verfahren und vorrichtung zum expandieren von vegetabilischem partikelmaterial

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19901224

17Q First examination report despatched

Effective date: 19920220

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19931113