US3704715A - Apparatus for the production of a sheet of tobacco - Google Patents

Apparatus for the production of a sheet of tobacco Download PDF

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Publication number
US3704715A
US3704715A US74989A US3704715DA US3704715A US 3704715 A US3704715 A US 3704715A US 74989 A US74989 A US 74989A US 3704715D A US3704715D A US 3704715DA US 3704715 A US3704715 A US 3704715A
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United States
Prior art keywords
steam
sheet
tobacco
nozzle
additive
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Expired - Lifetime
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US74989A
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English (en)
Inventor
Paul Buchmann
Monique Beringer
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Tamag Basel AG
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Tamag Basel AG
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Publication date
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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A24B15/12—Chemical features of tobacco products or tobacco substitutes of reconstituted tobacco

Definitions

  • ABSTRACT Apparatus for the production of sheet tobacco which comprises a conveyor, means for spray- [30] Foreign Application Priority Data I ing a mixture of powdered tobacco, water and bond- Nov. 10, 1969 Germany ..l.; ..P 19 56 402.4 g agent on the conveyor and means f removing the [52] U 8 Cl 131/140 C 131/144 sheet after formation from the conveyor.
  • the spraying [51 rn'tfc1.1111111111111111111111111111111111111111111111111111111 ..A2 4b 03/14 means is constituted of a Steam Source conduit and nozzle with an injection means for introducing an additive into the steam conduit. Cooling means are provided in the apparatus on the opposite side of the con- [58].
  • the invention relates to an apparatus for producing a sheet of tobacco.
  • a layer of water, followed by a layer of tobacco powder, a layer of bonding agent and then a second layer .of tobacco powder are applied to a backing sheet.
  • a pulpy layer is produced on the backing sheet.
  • a pulp is produced from the same substances and then applied to the backing sheet as a prepared coating. In both casesthe damp pulp is dried on the sheet by the action of heat, which causes it to solidify and to adhere to the backing sheet. To enable the solidified sheet to be detached therefrom, it is dampened again, by blowing water vapor thereagainst.
  • plasticizer substances such as glycerine, which reduce the brittleness of the completed sheet.
  • the plasticizer is added to this tobacco pulp prior to the spreading thereof on the backing sheet.
  • spray the plasticizer on the tobacco sheet while it is still located on the backing sheet and moreover, after it has been set by drying.
  • the plasticizer may itself be subject to structural changes. In processes not based on a pulp, such as in the prior-art systems described above, this known method of addition is eliminated.
  • a system for the production of a sheet of admixing may be carried out in such a manner that the water to be evaporated on the sheet has glycerine mixed therewith or alternatively, the glycerine is introduced into the vapor phase of the water.
  • the invention moreover uses the property that the additives, when admixed with the water vapor, are spread uniformly and proportionally.
  • plasticizer Preferably, 30 grams plasticizer are admixed with the steam per kilogram of tobacco to be treated. Such relatively small quantities will suffice, due to the method of introducing the plasticizer to the steam.
  • the additive is injected into the stream of steam.
  • the additives absorb heat from the steam.
  • the quantity of additive utilized is relatively small, such heat losses through condensation are almost insignificant.
  • the additives themselves maybe introduced into the steam in any desired physical state. They may be cold, pre-heated or vaporized. They may also be concentrated or dissolved, for example, in alcohol or water.
  • the additive is injected into the stream of steam by a venturi effect.
  • the venturi effect occurs when the steam flow is allowed to pass through a constriction in a pipe and a second pipe enters at the constriction. Due to the reduction of pressure at the constriction a suction effect is caused in the second duct. The additive is therefore induced to flow into the main flow.
  • the backing sheet is preferably cooled by spraying at with condensed steam. This accelerates the condensation of the steam and the additives onto the tobacco.
  • the invention provides an apparatus for the production of a sheet of tobacco comprising a conveyor means, means for spreading a layer of powdered tobacco, water and a bonding agent thereon, means for drying the layer arranged in series with the spreading means in the direction of travel of the conveyor, means for spraying steam against the dried layer, andmeans for removing the layer from the conveyor means wherein the spraying means comprises a steam source, a conduit and steam jet nozzles.
  • the spraying means comprises a steam source, a conduit and steam jet nozzles.
  • the present invention is preferably utilized for the addition of plasticizers. Glycerine and sorbitol are the preferred plasticizers employed.
  • FIG. 1 is a perspective view of an apparatus for producing a sheet of tobacco in accordance with the present invention
  • FIG. 2 is a perspective view, partially in section, of a plasticizer apportioner forming part of apparatus shown in FIG. 1 and FIG. 3 is a steam nozzle suitable for use in a modified embodiment in which the plasticizer is admixed in the steam nozzle.
  • an endless, rotatably driven, steel belt 1 is passed in the direction of arrow 4 over rollers 2 and 3.
  • Various sections of the apparatus are generally indicated by numerals 5,6,7,8 and 9.
  • a spreader is denoted by 5, a hot air drier 6, an evaporator 7, a cooling device 8, and a scraper 9.
  • a sheet takeup drum is rotatably driven in the direction of arrow 11.
  • the spreader 5 substantially consistsof an elongated funnel 12, the mouth thereof extending over substantially the whole width of the steel belt 1.
  • the funnel 12 is charged'with a pulp 14 formed of tobacco, water and a bonding agent.
  • the pulp is spread in a layer 15 over the upper-surface of the steel belt 1 and passes therealong into the hot air drier 6.
  • the hot air drier 6 has four chambers 16, 17,18 and 19 which chambers have a front wall a. In FIG. 1, this front wall 20a has been removed so as to show the chambers. These chambers are interconnected in pairs. As shown in FIG. I, chambers 16 and 17 are interconnected as are chambers I8 and 19. The chambers 16,17,18 and 19 are open at their lower ends and extend substantially over the whole width of belt 1.
  • Each pair ofchambers are provided with an inlet and an outlet pipe, the inlet pipe being-disposed on one chamber and the outletpipe being disposedon the other chamber of the pair.
  • chamber 17 is provided with an inlet pipe 21 whilst chamber 16 is provided with an outlet pipe 22.
  • chamber 19 is provided with an inlet pipe 20 whilst chamber 18 is provided with an outlet pipe 23.
  • Inlet pipes 20 and 21 are connected to the output of a hot air blower (not shown) while outlet pipes 22 and 23 open into the atmosphere.
  • hot air flows, in the vicinity of the layer 15, in a direction substantially opposite to the direction of travel of the layer.
  • the layer 15 is dried and set thereby.
  • the set layer or sheet then passes to the evaporator7 and the cooling device 8.
  • the cooling device 8 consists of a plate 25 mounted beneath the underside of the belt I.
  • This plate 25 extends over substantially the whole width of the'steel belt and is fed via a pipe 26 from a unit, not shown, with a coolant, which coolant is removed therefrom via pipe 27.
  • a hood 28 is arranged above the belt 1 substantially opposite plate 25, which hood extends substantially over the whole width of the belt, and is open at the bottom.
  • a steam supply conduit 29 extends into the center of the hood and is provided with a steam jet 30 such that the spray 31 therefrom is uniformly distributed over substantially the entire width of the layer 15.
  • the steam supply conduit 29 is connected to a steam source 32,
  • the sheet 50 is thus moistened again, and is removed I from the steel belt 1 bymeans of thescraper 9 and is then wound on to the bobbin 10.
  • FIG. 2 shows, on a scale enlarged relative to FIG. 1, the section of the apparatus, generally indicated at 40, wherein the glycerine is mixed with the steam.
  • the riser pipe 35 is provided with a spraying nozzle 41, which nozzle extends in the direction of flow of the steam as indicated by the arrow 42, andwhich is located within conduit 29.
  • the glycerine flow isinduced by the constriction 34 and enters the steam flow in an atomized state, which promotes intermixing.
  • FIG.'.3 shows, in cross-section, a modified embodiment on a greatly enlarged scale relative to FIG. 1, a nozzle 45 corresponding in action with nozzle 30.
  • the constriction 34- is not utilized.
  • the riser pipe for the glycerine enters a passage 46 in the body of the nozzle 45. Passage 46 flows into steam passage 48, at a constricted region 47 thereof. The glycerine is therefore not drawn into the steam flow by the venturi effect until shortly before atomization.
  • SPECIFIC EXAMPLE I Sodium carbonate (100 g) is dissolved in water (400 l). Tobacco (100 kg), ground to an average granule size of 100 is then mixed into the solution. The mixture is stirred and ground whilst still wet into a pulp. Sodium carboxymethyl cellulose (1 kg) is mixed into the pulp as a bonding agent as are asbestos fibers (1 kg). A layer of this pulp is then applied to the upper surface of a steel belt, which also acts as a backing sheet to a depth of 3 mm. The belt is advanced at the rate of 0.3 m/sec.
  • the layer of pulp applied thereto then passes through a drying chamber where hot air at a temperature of 60 C is blown at the surface thereof and is dried until the pulp has a moisture content of 10 percent by weight expressed as free water.
  • the steel belt and the substantially dried layer passes beneath a steam hood.
  • a cooling device Located substantially opposite the hood, i.e., below the steel belt, is a cooling device.
  • the lOO kg of tobacco is sprayed with a total of 100 kg steam containing a total of 4 kg of glycerine added thereto as a plasticizer, the spraying being uniformly effected over the whole width of the layer.
  • the cooling device simultaneously receives the heat of evaporation of kg steam.
  • the remaining heat is lost either by condensation of the steam on the hood or leakage thereof at the edge of the hood.
  • the sheet thereby becomes thoroughly moistened and is permeated uniformly therethrough with glycerine.
  • the sheet is then removed from the belt by means of a scraper. It is then cut into sections and may then be further processed.
  • cooling device need not be located in the position shown in the drawings. It may instead by located over the steel belt instead of beneath it.
  • the arrangement shown is however, particularly favorable.
  • An apparatus for the production of a sheet of tobacco comprising a conveyor means, means for applying a mixture of powdered tobacco, water and a bonding agent to said conveyor means, means for setting said mixture, means for spraying said mixture and means for removing said mixture from said conveyor means wherein said means for spraying said mixture comprises a steam source, a steam conduit communicating with said source, a steam nozzle terminating said conduit, injection means for injecting an additive into said steam conduit, and cooling means, said cooling means being located opposite said spraying means, said cooling means and said spraying means being disposed on opposed sides of said conveyor means.
  • said steam conduit is provided with a constriction region and said injection means for said additive comprises a tank containing said additive, a riser pipe disposed below the surface of said additive contained in said tank and a nozzle terminating said riser pipe, said nozzle being located in said constriction region of said steam conduit.
  • said steam nozzle is provided with a constriction region and said injection means for said additive comprises a tank containing said additive, a riser pipe disposed below the surface of said additive contained in said tank and a nozzle terminating said riser pipe, said nozzle being located in said constriction region of said steam nozzle.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
US74989A 1969-11-10 1970-09-24 Apparatus for the production of a sheet of tobacco Expired - Lifetime US3704715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691956402 DE1956402A1 (de) 1969-11-10 1969-11-10 Verfahren zur Herstellung einer Tabakfolie und Vorrichtung zur Ausuebung dieses Verfahrens

Publications (1)

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US3704715A true US3704715A (en) 1972-12-05

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US74989A Expired - Lifetime US3704715A (en) 1969-11-10 1970-09-24 Apparatus for the production of a sheet of tobacco

Country Status (6)

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US (1) US3704715A (enrdf_load_stackoverflow)
JP (1) JPS499759B1 (enrdf_load_stackoverflow)
CH (1) CH516914A (enrdf_load_stackoverflow)
DE (1) DE1956402A1 (enrdf_load_stackoverflow)
GB (1) GB1257768A (enrdf_load_stackoverflow)
ZA (1) ZA706445B (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050178398A1 (en) * 2003-12-22 2005-08-18 U.S. Smokeless Tobacco Company Conditioning process for tobacco and/or snuff compositions

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10314328B2 (en) * 2014-12-16 2019-06-11 Philip Morris Products S.A. Apparatus for the production of a cast web of homogenized tobacco material
CN108135247B (zh) * 2015-11-27 2021-08-31 菲利普莫里斯生产公司 均质化烟草材料生产线及线上生产均质化烟草材料的方法
RU2714782C2 (ru) * 2015-11-27 2020-02-19 Филип Моррис Продактс С.А. Линия производства гомогенизированного табачного материала и способ поточного производства гомогенизированного табачного материала
CN113892671B (zh) * 2021-10-19 2023-01-31 湖北中烟工业有限责任公司 一种基于干法薄片技术制备茄衣和茄套的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386750A (en) * 1943-09-08 1945-10-16 Standard Telephones Cables Ltd Selenium cell
US3194245A (en) * 1962-10-04 1965-07-13 Philip Morris Inc Method of forming a tobacco product of increased wet strength
US3548838A (en) * 1968-11-25 1970-12-22 Liggett & Myers Inc Applying menthol to tobacco in a pneumatic system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2386750A (en) * 1943-09-08 1945-10-16 Standard Telephones Cables Ltd Selenium cell
US3194245A (en) * 1962-10-04 1965-07-13 Philip Morris Inc Method of forming a tobacco product of increased wet strength
US3548838A (en) * 1968-11-25 1970-12-22 Liggett & Myers Inc Applying menthol to tobacco in a pneumatic system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050178398A1 (en) * 2003-12-22 2005-08-18 U.S. Smokeless Tobacco Company Conditioning process for tobacco and/or snuff compositions
US7694686B2 (en) * 2003-12-22 2010-04-13 U.S. Smokeless Tobacco Company Conditioning process for tobacco and/or snuff compositions
US8807141B2 (en) 2003-12-22 2014-08-19 U.S. Smokeless Tobacco Company Llc Conditioning process for tobacco and/or snuff compositions

Also Published As

Publication number Publication date
JPS499759B1 (enrdf_load_stackoverflow) 1974-03-06
GB1257768A (enrdf_load_stackoverflow) 1971-12-22
DE1956402A1 (de) 1971-06-24
ZA706445B (en) 1971-05-27
CH516914A (de) 1971-12-31

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