US3865120A - Process for producing tobacco foils - Google Patents

Process for producing tobacco foils Download PDF

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Publication number
US3865120A
US3865120A US195585A US19558571A US3865120A US 3865120 A US3865120 A US 3865120A US 195585 A US195585 A US 195585A US 19558571 A US19558571 A US 19558571A US 3865120 A US3865120 A US 3865120A
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Prior art keywords
tobacco
particles
cellulose
foil
process according
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Expired - Lifetime
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US195585A
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English (en)
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Ernst-Rolf Detert
Willi Buchholz
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Edward Gerlach GmbH
Gerlach E GmbH
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Gerlach E GmbH
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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
    • 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
    • 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
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances

Definitions

  • FIGQZ T IN VEN TORS EMEFR /F 0525M AM 60% 1 PROCESS FOR PRODUCING TOBACCO FOILS BACKGROUND OF THE INVENTION The invention relates to a process for producing tobacco foils using tobacco, binders in the form of cellulose derivatives and solvents. The invention also relates to an apparatus for performing the process.
  • tobacco foils which are to be used as a covering or wrapping foil in place of a natural tobacco leaf by processing to a pulp, tobacco dust with cellulose derivatives e.g. acetyl cellulose soluble in organic solvents in the presence of a solvent such as acetone, ether and alcohol which is brought to the desired foil form.
  • cellulose derivatives e.g. acetyl cellulose soluble in organic solvents in the presence of a solvent such as acetone, ether and alcohol which is brought to the desired foil form.
  • water-soluble cellulose derivatives including methyl cellulose is also known.
  • the solvent which can be water or an organic solvent, after producing the tobacco foil must be expelled again using a large amount of energy in the form of heat so that the tobacco foil dries.
  • Another disadvantage of the tobacco foils produced from a viscous suspension is that the starting material used is tobacco dust requiring a long grinding process requiring a high energy consumption and complicated machinery.
  • a process for producing tobacco foils is now produced which substantially or completely eliminates the disadvantages of the known tobacco foil production processes leading to products which are very similar to the natural tobacco leaf, contain only a very small amount of binder and require only a small amount of solvent in their production.
  • tobacco particles in the size range to mm are dusted with a solvent-soluble, finely ground cellulose derivative and then moistened with an organic solvent, whereafter the tobacco particles obtained are converted into a granulate which is pressed mechanically into a foil.
  • the tobacco particles processed can be the natural tobacco debris of the tobacco industry which can comprise tobacco leaf and vein particles.
  • the organic anhydrous solvents are e.g., readily volatile alcohols, chlorinated hydrocarbons, ketones, ethers, esters and mixtures thereof.
  • the preferred readily volatile alcohols are methanol, ethanol or isopropanol;
  • the preferred chlorinated hydrocarbons are methylene chloride and chloroform;
  • the preferred ketones are acetone and methylethyl ketone;
  • the preferred esters are acetic ester, methyl and ethyl acetate;
  • the preferred ethers are diethyl ether and dimethyl ether.
  • the tobacco starting material can be preclassified.
  • a tobacco and vein starting material is preferably used with. a particle size of 50 to mu; for a. wrapping foil, a material with a parti cle size of 0.1 to 1 mm; but for a filler foil, a starting material with a particle size of about 1 to 10 mm diameter.
  • the tobacco substantially retains its own color and structure.
  • a covering or wrapping foil can be produced having the desired appearance of the covering or wrapper for the finished article for smoking. 7
  • the solvent-soluble cellulose derivative e.g. methyl cellulose, methylpropyl cellulose, acetyl cellulose or ethyl cellulose used as the binder is, according to the invention, very finely ground (particle size 0-0.2mm) and powdered onto the tobacco particles serving as the starting material and, namely, in the dry state.
  • the powdering of the tobacco particles gives the otherwise brown tobacco particles a grey-brown appearance which means that the cellulose derivative particles are distributed more loosely on the tobacco particles and do not completely cover the surface of the foil of tobacco particles.
  • This cellulose derivative is powdered onto the tobacco particles in a mixer wherein, together with the mixing action, a kneading effect is achieved and onto which are introduced the tobacco particles and the necessary amount of ground cellulose derivative.
  • the solvent is added to the mixer. It is also, however, possible to transfer the powdered tobacco particles to another mixer to which is added the sol vent.
  • the tobacco material treated in the mixer forms, after adding the solvent, a granulate which is subsequently supplied to an apparatus which presses the granules into a foiHike form. It has been found that this mechanical pressing process is advantageously performed with a roller mill with two contra-rotating rollers with polished surfaces or hardened steel.
  • the granules of solvent-moistened tobacco particles powdered with cellulose derivative are supplied to the roller inlet, whereby advantageously a uniform distribution of the granules is brought about which are pressed into a foil by means of counter-rotating rollers.
  • the tobacco starting material is e.g., a relatively coarse starting material with a high vein content and a particle size of 1 to 10 mm
  • a foil is also produced which does not have a completely closed structure but, instead, is porous or it may even be in the form of a structure comprising individual tobacco foil sheets interconnected via individual strands.
  • this material can not be used as a foil but it can be employed as an enclosure for a product for smoking.
  • a closed product is required from such a material, then the product obtained after the first pressing on two-roller mill can be supplied to a further roller mill with three rollers and subjected to a further pressing.
  • the thrid roller serves to remove the closed foil formed and convey the foil to an apparatus for removing the solvent.
  • a covering foil is based on a tobacco and vein dust of particle size 50 to 100 m, i.e. a relatively fine-particle starting material
  • the tobacco particle granulate dusted with cellulose derivative and moistened witha solvent can be supplied directly to the three-roller mill which then transfers it to the foil drying apparatus because after only a single passage through a roller mill a good foil is obtained.
  • coarser tobacco starting material if the desired use of such a material permits.
  • the threeroller mill can be directly used, whereafter the finished foil is supplied to the further processing apparatus.
  • FIG. 1 is an apparatus for performing the process.
  • FIG. 2 is a tobacco particle after dusting with ground dry cellulose derivative.
  • FIG. 3 is a schematic representation of a powdered tobacco particle after producing the granulate with the added solvent.
  • I is a mixer wherein the tobacco particles are mixed with the finely ground cellulose derivative.
  • the finely ground cellulose derivative is preferably a fraction having particles in the range to 0.2mm and whereof, preferably at least 50% are below 0.1 mm.
  • the particle size of the cellulose derivative is also de termined by the tobacco particle size.
  • the solvent is added, followed by a further mixing process.
  • the solvent addition can take place in the same mixer as that in which the tobacco particles have been mixed with the cellulose derivative. It is also, however, possible to place the product of the mixture, tobacco particles and cellulose derivative in a second mixture and only then add the solvent.
  • the subsequent mixing process is continued until a maximum uniform saturation of the powdered tobacco particles takes place.
  • the tobacco particles can be mixed with the finely ground cellulose derivative and solvent in any suitable mixer e.g. in an Eirich mixer wherein counterflow movement takes place between a mixing trough and mixing blades or in a suitable drum mixer which, in addition to mixing simultaneously exerts a kneading action.
  • FIG. 2 shows schematically a tobacco particle T whereon the dusting operation is demonstrated. It can be seen how the cellulose derivative particles, represented as specks, are only loosely deposited on the tobacco particles T.
  • FIG. 3 shows the action of moistening the dusted tobacco particles with the solvent.
  • the solvent must not make the tobacco particle mass wet and convert it into a pulp, as in the conventional processes, but instead, the cellulose derivative particles located on the tobacco particles are only made to swell.
  • the solvent is, indeed, absorbed by the tobacco particles, however, at the contact point between the cellulose derivative particle Z and the tobacco particle. The solvent passes over into the former and converts the latter into ajellylike state.
  • the cellulose derivative e.g. together with the tobacco particles can be placed in the mixer at 2 in the measured and necessary quantities, whereafter following the requisite mixing time of about minutes, solvents and softeners are intorduced into the mixer via pipe 3.
  • the end product of this two-stage mixing process is then, depending on which tobacco particle starting material is used and/or on which end product is to be produced, supplied to a roller mill 4 with two rollers, or to a roller mill 5 with three rollers, or to roller mill 4 followed by roller mill 5.
  • the mixing product is first supplied to roller mill 4 and then to roller mill 5.
  • the suction installation 8 and recovery apparatus can be considerably simplified and only a limited vacuum is required in the suction installation. without additional heat, to remove the solvent from the tobacco foil.
  • a longitudinal and transverse cutting device 9 for producing sheets or foil conveying and cutting device 10 for producing :reels.
  • roller mills 4 and 5 to which end the roller mills are placed in housings ll.
  • The-process of the invention not only provides an improved product more closely resembling the natural tobacco leaf but also has numerous other advantages. Firstly, it is no longer necessary, as in the known processes, to pulverise the tobacco starting material into tobacco dust in a dry grinding process.
  • a further advantage is that the inventive process permits the production of a foil from a granulate whereof the solid content can be increased up to three times, compared with the conventional process. This results in considerable economies on solvents, so that energy is saved when drying the tobacco foil and recovering the solvent.
  • the drying temperature can, in practice, be room temperature and the drying apparatus and suction installation can be much smaller and simplier.
  • a further important advantage is that the binder content i.e. the cellulose derivative content can be reduced by up to SOpercent leading to a better flavor on smoking of the foil according to the invention, greatly impaired in the known foils by the high cellulose content.
  • the color and aroma are not lost.
  • the filler foil produced by the process of the invention has a particularly good bulk and filling capacity.
  • a process for the production of tobacco foils from tobacco, binders and solvents which comprises the steps of:
  • step (a) is a predetermined size fraction provided by classifying a natural tobacco debris into predetermined fractions, each fraction determinative of the utilization of the tobacco foil provided by step (c).
  • a process according to claim 1 characterized in that a softener is added to the moistening step (b).
  • glycol is selected from the group consisting of methylene glycol, diethylene glycol and l,3-butylene glycol.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Tobacco Products (AREA)
US195585A 1970-11-12 1971-11-04 Process for producing tobacco foils Expired - Lifetime US3865120A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2055672A DE2055672C3 (de) 1970-11-12 1970-11-12 Verfahren zur Herstellung einer Tabakfolie

Publications (1)

Publication Number Publication Date
US3865120A true US3865120A (en) 1975-02-11

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ID=5787903

Family Applications (1)

Application Number Title Priority Date Filing Date
US195585A Expired - Lifetime US3865120A (en) 1970-11-12 1971-11-04 Process for producing tobacco foils

Country Status (9)

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US (1) US3865120A (Direct)
BE (1) BE775220A (Direct)
CA (1) CA950786A (Direct)
CH (1) CH530174A (Direct)
DE (1) DE2055672C3 (Direct)
FR (1) FR2114398A5 (Direct)
GB (1) GB1356476A (Direct)
NL (1) NL153073B (Direct)
SE (1) SE366637B (Direct)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983884A (en) * 1974-05-04 1976-10-05 Eduard Gerlach Gmbh Method for manufacturing tobacco foil
US4625737A (en) * 1982-12-30 1986-12-02 Philip Morris Incorporated Foamed, extruded, tobacco-containing smoking article and method of making the same
US4632131A (en) * 1984-07-03 1986-12-30 Philip Morris Incorporated Foamed, extruded, coherent multistrand smoking articles
US4646764A (en) * 1985-12-16 1987-03-03 R. J. Reynolds Tobacco Company Process for providing roll reconstituted tobacco material
US4724850A (en) * 1986-02-05 1988-02-16 R. J. Reynolds Tobacco Company Process for providing tobacco extender material
US4787402A (en) * 1986-02-03 1988-11-29 R. J. Reynolds Tobacco Company Process and apparatus for providing roll reconstituted tobacco material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4341228A (en) * 1981-01-07 1982-07-27 Philip Morris Incorporated Method for employing tobacco dust in a paper-making type preparation of reconstituted tobacco and the smoking material produced thereby
AU550267B2 (en) * 1984-05-21 1986-03-13 Brown & Williamson Tobacco Corporation Reconstituted tobacco sheet
DE3808103A1 (de) * 1988-03-11 1989-09-21 Gerlach Eduard Chem Fab Verfahren zur herstellung einer tabakfolie
DE3819534C1 (Direct) * 1988-06-08 1989-12-07 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De
DE4005656C2 (de) * 1990-02-22 1994-05-26 Bat Cigarettenfab Gmbh Verfahren und Vorrichtung zur Herstellung einer Tabak-Folie

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2769734A (en) * 1955-07-14 1956-11-06 Int Cigar Mach Co Tobacco sheet material and method of forming
US3009836A (en) * 1959-11-05 1961-11-21 Liggett & Myers Tobacco Co Novel reconstituted tobacco compositions
US3012562A (en) * 1957-06-12 1961-12-12 American Mach & Foundry Manufacture of tobacco sheet
US3053259A (en) * 1958-04-22 1962-09-11 Lorillard Co P Processing tobacco
US3062688A (en) * 1960-08-18 1962-11-06 Detert Ernst-Rolf Tobacco foils and methods of making the same
US3125098A (en) * 1964-03-17 osborne
US3322130A (en) * 1964-03-03 1967-05-30 American Mach & Foundry Tobacco composition

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE563147A (Direct) *
BE545180A (Direct) *
DE464202C (de) * 1926-12-21 1928-08-10 Alfred Schaarschmidt Dr Verfahren zur Herstellung von Tabakhuellen und Tabakmassen
US2656841A (en) * 1946-09-10 1953-10-27 American Mach & Foundry Process for making tobacco sheet material
FR1026418A (fr) * 1949-10-28 1953-04-28 American Mach & Foundry Matière à base de tabac en feuille et son procédé de fabrication
DE1033119B (de) * 1957-02-01 1958-06-26 Gerlach Gmbh E Verfahren zur Herstellung von Tabakfolien, insbesondere eines tabakhaltigen Umblattes
DE1044695B (de) * 1957-11-16 1958-11-20 Gerlach Gmbh E Verfahren zur Herstellung von Tabakfolien
NL134994C (Direct) * 1960-08-18
DE1215567B (de) * 1963-12-06 1966-04-28 Heinr Borgwaldt Fa Verfahren zur Herstellung von folien- oder blattartigen Gebilden (Flakes) aus zerkleinertem Tabak, Tabakmischungen oder anderen Pflanzenteilen
DE1256133B (de) * 1964-12-29 1967-12-07 Gerlach Gmbh E Verfahren zur Herstellung einer speichelfesten Tabakfolie

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125098A (en) * 1964-03-17 osborne
US2769734A (en) * 1955-07-14 1956-11-06 Int Cigar Mach Co Tobacco sheet material and method of forming
US3012562A (en) * 1957-06-12 1961-12-12 American Mach & Foundry Manufacture of tobacco sheet
US3053259A (en) * 1958-04-22 1962-09-11 Lorillard Co P Processing tobacco
US3009836A (en) * 1959-11-05 1961-11-21 Liggett & Myers Tobacco Co Novel reconstituted tobacco compositions
US3062688A (en) * 1960-08-18 1962-11-06 Detert Ernst-Rolf Tobacco foils and methods of making the same
US3322130A (en) * 1964-03-03 1967-05-30 American Mach & Foundry Tobacco composition

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983884A (en) * 1974-05-04 1976-10-05 Eduard Gerlach Gmbh Method for manufacturing tobacco foil
US4625737A (en) * 1982-12-30 1986-12-02 Philip Morris Incorporated Foamed, extruded, tobacco-containing smoking article and method of making the same
US4632131A (en) * 1984-07-03 1986-12-30 Philip Morris Incorporated Foamed, extruded, coherent multistrand smoking articles
US4646764A (en) * 1985-12-16 1987-03-03 R. J. Reynolds Tobacco Company Process for providing roll reconstituted tobacco material
EP0227422A3 (en) * 1985-12-16 1989-01-11 R.J. Reynolds Tobacco Company Process for reclaiming tobacco
US4787402A (en) * 1986-02-03 1988-11-29 R. J. Reynolds Tobacco Company Process and apparatus for providing roll reconstituted tobacco material
EP0233046A3 (en) * 1986-02-03 1989-01-25 R.J. Reynolds Tobacco Company Process for reclaiming tobacco
US4724850A (en) * 1986-02-05 1988-02-16 R. J. Reynolds Tobacco Company Process for providing tobacco extender material

Also Published As

Publication number Publication date
DE2055672B2 (de) 1976-05-13
BE775220A (fr) 1972-03-01
GB1356476A (en) 1974-06-12
DE2055672A1 (de) 1972-05-18
SE366637B (Direct) 1974-05-06
DE2055672C3 (de) 1983-06-01
NL153073B (nl) 1977-05-16
CA950786A (en) 1974-07-09
CH530174A (de) 1972-11-15
FR2114398A5 (Direct) 1972-06-30
NL7115545A (Direct) 1972-05-16

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