DE2251339A1 - NEW TOBACCO COMPOSITION AND PROCESS FOR ITS MANUFACTURING - Google Patents

Description

Patent attorneys

AMF Incorporated Dip .. Ing. F. Wöiokniann, · '"

777 Westchester Avenue Dipl. Ing.H.Weickmsnn, Dipl.Pnys. Dr.K.Fncke

White Plains, N.T. 10604 Dipl.Ing.F.A.Weicknisnn, Dip! .C! I3 «^. Hüi ^ e24

V. St.A. 8 Munich 27, f.iöhlsir. 22 2251339

New tobacco composition and process for its production

The present invention relates to a new composition of tobacco and an adhesive and tobacco leaf materials made therefrom, the adhesive being made from a substituted galacto-male of resin.

In the broadest sense, the invention relates to a composition made from tobacco and substituted galacto-mannan resin. Of simplicity however, for the sake of illustrative purposes, the invention is explained in more detail with regard to its use in the form of sheet materials, in which the beneficial properties are best expressed. .

In the production of tobacco leaf materials, finely ground tobacco is usually mixed with aqueous resin solutions " so that a paste-like mass is produced, which is then processed into a continuous sheet by conventional measures. Preferably are naturally occurring as adhesives for tobacco leaves Used polysaccharides, such as black locust bean and guar resin. These naturally occurring glacto-mannan resins are opposed to Methyl cellulose resins are preferred. For example, for a number of reasons, they are lightly crosslinked so that the tobacco leaf becomes moisture resistant. As a result, the tobacco leaf can be provided with a moisture resistance of a considerable size will. This moisture resistance is of particular importance for tobacco leaves which are used as wrappers for cigars should be so that the end of the cigar does not disintegrate in the mouth of the rough man, but has the required chewability.

Another benefit of the galacto-mannan class polysaccharides over other water-soluble resins derived from cellulose is its inherently high viscosity and consequently the great strength of the films made from such resins, especially when the films are made from either locust bean resin, Guar resin or combinations thereof are made.

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In addition, it is due to the fact that these are galacto-mannans are additives approved for food and as such are widely used in food production, their use as adhesives for tobacco leaf manufacture still more desirable, because the tobacco products are intended for human consumption. This aesthetic value is therefore another Plus point for the preference for locust bean and guar resin in tobacco leaf production.

However, in spite of their merits, these resins have certain properties which make their use in technology restrict. For example, aqueous adhesive preparations made therefrom have a limited shelf life. aside from that it was found in practice that aqueous suspensions of guar and locust bean resins lose their viscosity and, accordingly, their ability to form strong films, in which large amounts of finely divided tobacco can be incorporated. This viscosity loss is caused by the effect naturally occurring enzymes which are integral components

? The seeds of plants that the resins are made of. Although Aaa can regulate the degree of enzymatic action of these naturally occurring resins to a certain extent by the grinding process used, the cleavage of the molecular chains and the resulting reduction in viscosity of the aqueous resin suspensions due to inherent enzymatic action cannot be completely eliminated. In addition, the inactivation of these native resin enzymes by chemical means is very undesirable, since this introduces substances into the tobacco leaf material which are undesirable for aesthetic and / or health reasons.

The loss of viscosity and, accordingly, the loss the film-forming properties as a result of enzymatic reactions limit the useful shelf life under production conditions on 5-20 hours. Occasionally the usable shelf life is further drastically reduced by microbial Contamination so that there is considerable loss of material; also the continuous tobacco leaf production has to be interrupted frequently which is very costly.

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A comparison of the viscosity profile of locust bean ears; for food purposes with that of a good technical Robinia Bean-JEfarzes shows the connections between purity of the resin and sol stability. Aqueous resin suspensions with 2 # Solid content are produced in the laboratory. One holds these solutions at room temperature and determine the viscosity at time intervals with a Brookfield viscometer, model RVF (Sphdel-Hr. 4) at 21-24 ° C and 20 rpm. The following are obtained Results:

Viscosity profile of locust bean solutions

O Aging time / hours - 48 5 20 24 28 Resin type 3800
1200 Brookfield visc. GPS 340
0 LBG 1/11 (for
Food)
Techn. LBG 5400 5200 2750
I5OO I3OO 650 2400
520

The data show that the food grade Resin supplies a sol of greater viscosity, which is therefore less amenable to enzymatic degradation than the resin, which made from a good technical black locust bean resin.

The sol degradation by reaction of the native resin enzymes is not limited to locust bean resin alone. Similar circumstances * also apply to guar resin. True, the speed is with which the enzymatic reactions take place in guar resin solutions, slower; Nevertheless, there is a decrease in viscosity, as can be seen from the following data.

The test method is the same as for locust bean resin; one also works with a sol with a solids content of 2%.

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Viscosity profile of guar resin solutions

0 Aging time / hours 24 48 72 5 20 -CPS Resin type 24000
2700 Visc. 34000
31400 17500
16000 8200
7000 Guar D / F (for
Food)
Guar 1005 (for
Food) 35000
37000 32000

The susceptibility of galacto-mannan resins to cleavage is further increased when the adhesive preparations made from it come into intimate contact with tobacco, which is enzymatic is active and can therefore degrade aqueous polysaccharide suspensions. The extent to which the viscosity of resin solutions is affected by the enzymatic activity of tobacco can be shown by the following studies.

A laboratory method for determining the enzymatic Effect of tobacco on the viscosity of aqueous resin suspensions consists of the following procedure.

100 g of tobacco are soaked in tap water for 1 hour. The mother liquor is decanted off and filtered through a pad of nettle cloth. 100 g of this tobacco extract is then added to an aliquot of a resin suspension made from either locust bean resin or guar resin. 100 g tap water is added to a control portion of the resin solution in order to maintain the identical resin concentration of the samples. To set the test solutions in a water bath at 35-37 ⁰ C. and the viscosity was determined at certain time intervals as described above by.

Breakdown of black locust bean solutions by tobacco enzymes

Brookfield Viscosity / CPS test Time / min. control 3200 0 3480 1520 30th 3650 860 60 3230 580 90 2850 410 120 309817/0864

In this series of experiments, LBG 1/11 is used as the resin (for food ^ as tobacco Broadleaf Lot # C213-

The breakdown of galacto-mannan resins by tobacco enzymes worries the tobacco leaf manufacturers * - well-known methods of overcoming this problem is the pasteurization of aqueous tobacco suspensions before they come into contact with the adhesive preparations, or the elimination of the enzymatic activity by heating of the tobacco in a formalin atmosphere in order to reduce the tobacco enzymes inactivate..These tobacco treatment methods have obvious ones Disadvantages, including loss of most of the desirable smoking properties of the tobacco so treated, capital expenditure for the tobacco processing devices and consequently economical Disadvantages due to increased laboratory and processing costs.

There is therefore a need to address the above disadvantages when using galacto-mannan resins in tobacco compositions overcome.

The present invention avoids the disadvantages mentioned by using chemically substituted galacto-mannan resins, which are more resistant to enzymatic degradation and are excellent Form adhesives which are useful for the manufacture of tobacco compositions.

The invention relates to a tobacco composition which contains at least one resin which is composed of a film-forming, in polar solvents soluble, ether, ester or mixed ether-ester substituted galacto-mannan resin. The inventive The method of making the new composition is to stir the tobacco and resin in Mixing in the presence of a polar solvent, followed by pouring or removing the obtained homogeneous mixture of the solvent can convert into a film or sheet at elevated temperature.

You can use derivatives of all for the composition according to the invention Use galacto-mannan resins. However, the derivatives are natural occurring galacto-mannans preferred, in particular

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Locust bean resin and guar resin.

As already mentioned, are those in the invention Composition used Galacto-Marman resins substituted, being the substituents are derived from ethers and esters; she may be the same or different in the galacto-mannan material There are substituents, e.g .:

1) One or more of the available and replaceable hydroxyl groups of the sugar moiety are functional by the same Ither group such as methyl galacto mannan etc .;

2) More than one available and replaceable hydroxyl group of the sugar moiety is through different functional ether groups replaced, such as Methjl-hydroxypropyl-Galaatc-Mannan, Ethyl-hydroxypropyl-Galacto-Mannan etc .;

3) As in 1) and 2), but ester groups have been introduced; and

4-) More than one available and replaceable hydroxyl group the sugar half is replaced by various functional ether and ester groups, such as methyl-acetyl-galacto-mannan Etc.

So there are a large number of different ether and ester derivatives of the galacto-mannans. Connections of this kind are known, some of which are commercially available; they are obtained by methods similar to those used for the production of the analogous ones Cellulose derivatives can be used.

In general, the lower alkyl types are in accordance with the invention of these compounds are preferred, i.e. those having 1-3 carbon atoms. These materials generally form the hydroxyalkyl and alkyl hydroxyalkyl substituted galacto-mannan resins with lower alkyl groups, i.e. derivatives of black locust bean resin and guar resin having 1-3 carbon atoms in the alkyl groups of the substituents are particularly preferred in the present invention. Specific examples of such substituted resins are hydroxypropyl guar resin, methyl hydroxyethyl robinia botmen resin, Methyl-hydroxyethyl-guar resin, propyl-hydroxymethyl-black locust bean resin, Propyl-hydroxyäthyl-Giiar resin and the like

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substituted galacto-mannan resins, which are film-forming and in are soluble in polar solvents.

In the compositions according to the invention, the amount of tobacco and resin can vary within wide ranges as they are compatible with one another in all proportions. The end ' for practical reasons, however, enough tobacco should be used so that the composition has an effective tobacco content. Accordingly the tobacco is generally used in a range of about 20-90 wt .- ^ (based on the total weight of the composition), preferably about 65-75% by weight.

As mentioned above, a "polar" solvent is used to obtain the suspensions and / or slurries used to make the sheet material. A wide variety of polar solvents can be used, such as water, lower alcohols and esters. Examples of lower alcohols are methyl alcohol, Ethyl alcohol, i ^ opyl alcohol, etc., and also the lower esters such as methyl acetate, ethyl acetate, propyl acetate, etc. The total amount of tobacco and resin in the polar solvent can also vary widely, since they are compatible with one another in all proportions; however, at least so In practice, the slurries and / or suspensions will contain about 8-20% by weight of tobacco and resin (based on the total weight of the mixture, ie, tobacco plus resin plus solvent), the preferred Solid content is in the range of about 10-15 %

It is generally desirable, if not absolutely "^ necessary to use a crosslinking agent when water is a component of the system of the composition according to the invention; the crosslinking agent is generally used in amounts of less than 0.5 wt .- ^ a ^ around the moisture resistance of the to improve sheet material made therefrom. All known crosslinking agents can be used, e.g. glyoxal.

The compositions according to the invention are prepared by the tobacco in finely divided form with the substituted. Resin mixed in the presence of the solvent and the mixture

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stir until homogeneous. Charging can be carried out over a wide range of temperatures from the freezing point to the boiling point of the mixture. In practice, the mixture is stirred, generally at a temperature of about 21-24 ⁰ C ₁ till homogeneity is reached. On the other hand, any conventional sheet-forming method can be used to form a sheet material. Preferably, the composition is cast in the form of a film onto a heated metal belt which is passed through drying ovens at a temperature sufficient to evaporate the solvent (about 65-77 ° C) at a belt speed of about 15-200 feet per minute; thus a sheet material containing tobacco and the resin as an adhesive is obtained. . "

Preferably for the production of the invention Composition the resin dissolved in part of the solvent and the tobacco in finely divided form then in the remaining solvent suspended. Then combine the two mixtures, so that the final slurry is formed. But you can too mix the tobacco and solvent, then add the resin to make the final composition.

These methods are recommended if the composition is to be kept for a long period of time before the sheet material is removed from it manufactures, since thereby every possible breakdown by the tobacco enzymes is avoided.

The sheet obtained in this way can be chipped or otherwise crushed; it is used as a cigar or Cigarette filler or you can use it to form pieces for pipe tobacco. The leaves are also suitable as a cigar wrapping because they are a have excellent moisture resistance.

The substituted resins explained in more detail above are not only excellent adhesives, which against the enzymatic They are more resistant to degradation, but they also have a greater viscosity in aqueous suspensions.

The comparison of the viscosity data of 2 # aqueous Resin solutions clearly show this fact, as does the

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improved sol stability of the modified resins in comparison to the unsubstituted resins.

The tests are carried out as described above, one obtains the following viscosity data:

Comparative viscosity measurements
2 % resin solutions

Aging time / hours

Resin type

Control LBG 1/11 LBG Tea HEH # 1 HEM # 2 HPG # 492

Control Guar D / F

24

28

44

48 1? .O

3800 5400 5200 2750 24üO 1840 340

1200 I5üö 1300 650 520 332 0

10000 21000 25200 21400 255υΟ 25200 23100

1580Ü 24ü0ü 28uüü 285uü 242üO 23400 240U0

22Ö0Ü 31400 33200 3500U 342υΰ 31600 29600

24600 35000

34000

175OU * 82üü (72Hr)

Legend: LBG 1/11 LBG tea.

HEM # 1 HEM f £

HPG # 492

Locust bean resin (for food) Locust bean resin, technical Hydroxyethyl locust bean hara Hydroxyethyl guar resin Hydroxypropyl guar resin

The data show a nearly 5-fold viscosity with the substituted black locust bean resin compared to the natural black locust bean resin at the maximum hydration after 20 hours. Indeed, this is surprising; this property is further improved by the stability of the brine over a period of
at least 120 hours.

The improved viscosity of the chemically substituted

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Resins and their resistance to degradation by the resins' native enzymes is of great value in manufacturing of tobacco leaves, because of the greater film thickness and the longer shelf life of the adhesive preparations; it however, it has been found that these desirable properties still exist can be supplemented by a further property, namely the greater resistance of the sols made of substituted resins Tobacco enzymes. The results of the laboratory tests show the full extent of this new chemical substitution effect. To determine the resistance to enzymatic degradation, the enzymatically highly active Broadleaf tobacco Lot # 0213 used.

Make resin suspensions at 2 % solids. 300 ecm of this brine are mixed with 25 g of 80 Me ^ h Broadleaf tobacco Lot fC2l3. These ingredients are mixed in a Wering mixer. The test samples are kept in a water bath at 36-37 ° 0, after which the viscosity is determined at certain intervals in the manner described above. The following results are obtained.

Time / minutes LBG-
control LBG +
Tobacco C213 Substituted
LBG + tobacco
0213 0 3480 CPS 2630 CPS 37000 CPS 30th 3650 CPS 530 CP8 29800 GPS 60 $ 230 CPS 220 CPS 23600 CPS $ 0 2850 CPS 140 CPS 21000 CPS 120 2580 CPS 100 CPS 17400 GPS

The stability of the substituted galacto-mannan resins against degradation by the tobacco enzymes, which can be seen from these data, is Of course, of great value in the technology of tobacco leaves, as this prevents the adhesive preparations from spoiling prematurely which can be caused, among other things, by contamination with airborne tobacco dust particles.

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The present invention offers a number of advantages. For example, the film-forming strength and the ability of the resin film to bind large amounts of tobacco in a useful tobacco sheet are related to the viscosity grade of the resins used in the manufacture of the tobacco leaves. Experience has shown that films from higher viscosity Harzen.mit were prepared, a greater strength than similar films _have,%, the lower viscosity of resins were prepared. The improved film strength is shifted further in favor of the higher viscosity grades, since the resin films must be loaded with relatively large amounts of tobacco in the manufacture of tobacco leaves. The considerable increase in viscosity of chemically modified locust bean resin and the consequently greatly improved film strength and charge capacity are of great value for the manufacture of tobacco leaf products, since this increases the tobacco content in the leaf while maintaining the strength required for industrial use of tobacco leaves remain.

The increased viscosity and greater loading capacity lead to another beneficial effect: tobacco leaves, which are made from improved Resins made show greater expansion and the compressive load curves of tobacco leaves are similar more that of the natural leaf. This improvement in physical properties leads to better machine quality Machinability of the tobacco leaf and better wrapping of complicated cigar shapes.

Another improvement in tobacco leaf technology through the use of chemically modified resins, which is related to the greater film strength, is the fact that the amount of cellulose fibers can be reduced by up to 40% without the leaf strength suffering any loss. Gelulose material in a strongly fibrous form is an essential part of the tobacco leaf composition; it mainly acts as a stiffening agent for the tobacco-laden resin films. »Since the amount of oil-cellulose fibers in a cigar wrapping sheet can proportionally influence the elongation and flexibility properties of the wrapping sheet, the reduction in the fiber content is particularly important

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valuable. The workability of the tobacco leaf can therefore be greatly improved, and so can the reduced cellulose content of the tobacco leaf leads to an improved taste and breath pleasure.

The invention is explained in more detail in the following examples. Unless otherwise stated, all parts refer to and Percentages on weight.

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Example. 1

In a pilot plant, adhesives are produced by preparing aqueous solutions of unsubstituted black locust bean resin and hydroxyethyl black locust bean resin, in each case from two parts of resin per solution. The unsubstituted resin solution serves as a control. The control solution also contains 0.8 parts of highly purified cellulose, the test solution 0.6 parts; both solutions also contain 0.05 parts glyoxal and 6.8 parts finely divided tobacco. Tobacco, resin and water are mixed in a tank at room temperature (about 21-24 ⁰ O), so that a homogeneous composition is formed which contains 71-72 % tobacco on a knoeh. Dry basis.

The compositions obtained in this way are then put on as films cast a stainless steel belt moving at a speed of 60 feet per minute. The belt runs through Drying ovens and is made by the action of 'steam on the bottom of the tape is heated so that a «temperature of 90 ° C arises, thereby removing the water and forming the tobacco leaf. These leaves are suitable as cigar wrappers and have the properties listed in the following table.

The breaking strength and the wet breaking strength are determined with a Scott tester.

Legend for experiment 16, experiment 225

Control Cigars' Test Cigar Serving Serving

Resin type unsubstituted LBG hydroxyethyl LBG

Sheet weight 2.99-3.08 g / ft ² 3.00-5.06 g / ft ² Moisture 32.4-32.7 % 32.5-33.0 #

Breaking strength,

lengthways 240-250 g / in. 430-450 g / in. Breaking strength,

Transv. 120-125 g / in. 250-260 g / in. Wet fracture strength,

lengthways 110-120 g / in. 215-220 g / in. Wet fracture strength,

Transv. 80-85 g / in. .175-185 g / in.

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A comparison of the breaking strength shows the weakness of the tobacco wrapping sheets made from natural locust bean resin This structural weakness does not permit satisfactory cigar manufacture. The bundle is difficult to roll, that The hem end of the Perfectο-shaped cigars tears, so this one Wrapping sheet is unusable. In comparison, the cigar wrapping, which is made of hydroxyethyl locust bean resin was made, processed well on the cigar machine, there are no torn hems, the bundle is easier to handle roll without wrinkles on the sauu and body of the well-shaped Cigar occur. The overall look is determined by professionals found to be superior to the cigar.

Those made with hydroxyethyl locust bean resin Cigars are given to arbitration by experts in smoking; these report an improved smoke quality of the test cigars and comment favorably on the noticeable reduction in the cellulose burning aroma.

Example 2

Example 1 is repeated, except that hydroxyethyl guar resin is used as the adhesive in the production of the wrapping sheet. The adhesive preparation again contains 0.6 parts (based on the total resin content) of highly purified cellulose pulp, the tobacco content is 70 % (on a bone-dry basis).

The wrapping sheet is made as described in Example 1. The end product in the form of a cigar tobacco wrapping sheet is subjected to the normal physical examination, the results are summarized in the table below.

Example?

An adhesive for the production of wrapping sheets is prepared as described in Example 1. As resin is Hydroxypropyl guar resin used. The content of highly purified cellulose pulp in the adhesive preparation is 0.6 parts,

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based on the total resin content, the tobacco content is 70 # (on a bone dry basis). ,

The wrapping sheet is made as described in Example 1. The end product in the form of a cigar tobacco wrapping sheet is subjected to the normal physical examination, the results are summarized in the table below

Example 4-

One makes an adhesive composition for the production of one Wrap hats as described in Example 1. As resin is unsubstituted, normally used 'guar resin (for Food). The content of cellulose fibers is adjusted so that in this case one part to one part of the Total resin content comes; the tobacco salary- is $ 70 (on bone dry base). The resin / fiber ratio largely corresponds to a standard wrapping sheet and therefore serves as a Control for the substituted guar resins used according to Examples 2 and 3.

A tobacco leaf is produced as in Example 1 and subject to physical examination, the results are compiled in the following table: -

Legend

Example 2 Experiment number 227

Example 3
Experiment number 221

Example A Control Experiment 104-

Hydroxyethyl guar resin

Resin type

Resin content

(total): 1.0 part

Pulp content 0.6 parts Sheet weight 2.90-3.00 g / ft 'Moisture 32.4-32.9 %

Transv. Wet breaking strength 155-160 g / in.

Hydroxypropyl guar resin

1.0 part

0.6 parts
2.90-3.00 g / ft ²
32.8-33.9 %

128-140 g / in.

Guar resin D / i ¹

1.0 part 1.00 part 2.90r-3.00 g / f 31.9-32.6 %

135-155 g / i ".

17 / σ86 "4

The data show that the various tobacco wrapping sheets have comparable strength properties. The reduction of the porridge content from one part to 0.6 parts, which is normal lead to a decrease in the wet starch values and the tobacco wrapping sheet would make it unusable, is due to the greater film thickness and loading capacity of the substituted galacto-mannan resins totally outweighed.

The cigar wrapping sheets are also used in terms of their ability to wrap a complex cigar in Examines the perfecto shape. In a side-by-side comparison of the wrappings on a cigar machine, the wrapping according to Examples 2 and 3 shows up compared to the control according to FIG Example 4 · superior. The advantages are:

a) smoother, wrinkle-free rolling of the body,

b) Good seam formation, free of pockets,

c) Good head formation, free from shoulder wrinkles

The overall look of the test cigars compared to the Control cigars generally show improved processing.

In analogy to Example 1, an arbitration panel made up of smoking experts examined the smoking quality of the cigars. In spring case the reduction of the cellulose stinging aroma was mentioned as a significant improvement, as well as the less wrinkle-free appearance of the Cigars made from the substituted galacto-mannan resins became.

The tobacco products according to the invention can be cigar wrappers, cigar binders, and cigar or cigarette fillers be; they generally contain more than 2/3 the weight of tobacco and can contain 4-5 or more ^ abac.

For the production one combines tobacco with an adhesive preparation, the composition of the latter to a considerable extent determining the use of the end product. Whether it is cigar wrappers, cigar binders, cigar fillers or cigarette fillers, the binding agent is in each case

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the basis for the sheet formation concept. The improvements shown in the viscosity properties, in the sol stability and in the resistance to enzymatic degradation therefore relates to all tobacco products and is not to any in the form shown in the examples.

The term "film-forming" used in this application refers to a natural or synthetic material that forms a system with a polar solvent and can be loaded with another substance, whereby it binds this substance in a continuous film, if you do that potted system formed with the solvent.

The term "tobacco" means tobacco ^; in all forms, ie from the field as well as tobacco substitutes, either natural or synthetic which are nicotine-free materials that can be used in place of tobacco, e.g. naturally occurring nicotine-free plant derivatives such as "corn silk", peat and other naturally occurring materials as well partially oxidized cellulose materials, which can be almost completely oxidized when incinerated. Such partially oxidized cellulose materials are, for example, cellulose and substituted cellulose in a partially oxidized state.

Whether a natural tobacco or a tobacco substitute is used in the composition according to the invention, it will in any case Crushed or finely divided before the leaves form. Furthermore, you can, if desired, the composition according to the invention with humectant, Add flavors and other additives, such as foaming agents, etc.

From the above it can be seen that the * according to the invention Composition has many advantages. Numerous variations can also be made without departing from the spirit of the invention; this should therefore not be restricted to the advantageous embodiments described.

changed according to input efr: n -:! * cngon am .kk: ....- —ä

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Claims (1)

Claims . fly New tobacco composition, which contains at least one resin, which is substituted by ether, ester or mixed ether-esters from a film-forming, soluble in polar solvents
Galacto-Mannan resin is made. 2. Composition according to claim 1, characterized in that the resin is a hydroxyalkyl-substituted galacto-mannan resin used. 3- composition according to claim 1, characterized in that an alkylhydroxyalkyl-substituted galacto-mannan resin is used as the resin. 4. Composition according to claim 1, characterized in that the resin is derived from locust bean resin. 5. Composition according to claim 4, characterized in that the resin used is hydroxymethyl bean bean resin. 6. Composition according to claim 4, characterized in that the resin used is hydroxyethyl locust bean resin. 7- composition according to claim 4-, characterized in that the resin used is hydroxypropyl locust bean resin. 8. Composition according to claim 4, characterized in that the resin used is ethylhydroxyethyl-robinia bean resin. 9. Composition according to claim 4, characterized in that the resin used is methylhydroxyethyl black locust bean resin. 10, composition according to claim 4, characterized in that the resin used is propylhydroxymethyl black locust bean resin. 11. Composition according to claim 1, characterized in that the resin is derived from the guar resin. 309817/0864 12. Composition according to claim 11, characterized in that the resin used is flydroxymethyl guar resin. 15. Composition according to claim 11, characterized in that the resin used is hydroxyethyl guar resin. 14. Composition according to claim 11, characterized in that ■ is used as Hars hydroxypropyl guar resin. · 15 ·· Composition according to claim 1, characterized in that the tobacco is finely divided. 16. A process for the preparation of a new tobacco composition, characterized in that tobacco is a polar solvent and at least one film-forming, in polar solvents soluble, ether, ester, or mixed ether-ester substituted galacto-mannan resin at one temperature mixed between the freezing point and the boiling point of the mixture and until a homogeneous composition is formed stirs. 1 ". The method according to claim 16, characterized in that the homogeneous composition is then cast into a film, the temperature having to be at least high enough that the polar solvent is removed and a sheet is obtained which contains the tobacco and the substituted galacto-mannan resin contains. Ί8. Method according to claim 16, characterized in that the solvent used is water. 19. The method according to claim 16, characterized in that the solvent used is alcohol. 20 .. The method according to claim 16 »'characterized in that the resin is derived from the black locust bean resin. 21. The method according to claim 16, characterized in that ' the resin is derived from guar resin. ^ - .3 09817/0864