EP2427069B1 - Aerosol-forming material for a hookah - Google Patents

Description

The invention relates to an aerosol-forming material for a water pipe comprising a first substance and at least one second substance held by the first substance which is at least partially released after activation of the aerosol-forming material, a use of the aerosol-forming material and the first substance.

The purpose of a hookah is to consume flavors from an aerosol forming material in a reservoir. The aerosol forming material is typically water pipe tobacco and / or a vegetable based tobacco substitute carrier for flavored fluids. A fuel, especially coal, is placed over it, the aerosol-forming material being separated from the fuel by a perforated aluminum foil or a smoke screen. During consumption, a flow is created which directs hot air from the coal to the aerosol forming material. The proximity of the fuel to the aerosol forming material preheats the same, and the supply of hot air to the aerosol forming material releases solids to the hot air, so that now an air stream containing aerosol forming material components in the form of an aerosol, is passed from the aerosol forming material in the remaining part of the hookah.

The problem, however, is that the aerosol-forming material can easily burn, which deteriorates the taste of the hookah. Moreover, the aerosol forming material is consumed after use and can not be reused.

Out DE 198 54 009 C2 For example, a system for providing an inhalable aerosol comprising an aerosol forming material is known. This material may be a carrier material treated with flavoring substances. As inorganic Support materials are called alumina, silica gel, activated carbon, cellulose fibers, lignin granules, zeolites, clays, meerschaum and combinations thereof. A use of the aerosol forming material in hookahs is not provided.

WO 2009/010176 A2 relates to a tobacco substitute comprising a carrier material and a flavoring agent. The support material may be a porous bulk material, with examples of such a porous bulk material montmorillonite, dolomite, diatomaceous earth are specified.

DE 10 2007 043 776 A1 discloses microcapsules to be used in a molded article whose shape resembles a hookah. The microcapsules contain an ingredient that may be associated with a carrier. The carrier may be porous species of dolomite, clays such as montmorillonite and silicic acids and silicates such as diatomaceous earth.

The object of the invention is to eliminate the disadvantages of the prior art. In particular, an aerosol-forming material is to be specified which can be used in water pipes and has improved properties. Furthermore, uses of the aerosol forming material shall be indicated.

This object is solved by the features of the independent claims. Advantageous embodiments of the invention will become apparent from the features of the dependent claims.

According to the invention, an aerosol-forming material for a hookah is provided which comprises a first substance and at least one second substance held by the first substance which is at least partially released after activation of the aerosol-forming material, the first substance having pores for receiving the second substance and the second substance is a fluid, wherein clinoptilolite is used for the first substance.

Surprisingly, it has been found in extensive experiments by the inventor that the aerosol-forming material according to the invention, due to the use of clinoptilolite as the first substance, comprises improved properties in the maintenance of the second substance and its release after activation. Clinoptilolite has a high adsorptivity, which can be between 40 and 50 wt .-% of its own weight. Thus, in contrast to the prior art in a full loading of the first substance with the second substance, based on an identical space unit, a higher amount of second substance in the hookah be provided. Surprisingly, the release of the second substance after activation, ie during the intended use of the hookah, takes place uniformly in a steady stream. A change of the second substance with respect to its structure does not occur during the posture in the first substance. In addition, clinoptilolite is not harmful to health, especially not carcinogenic. Finally, clinoptilolite is not altered in its structure by the activation, so that it can be loaded again with second substances after the release of the second substances. For this reason, a reuse of the first substance is possible. The first substance also has the advantage that it is not flammable.

The term "aerosol forming material" in the present invention refers to a material that can release the second substance in the form of an aerosol. The first substance itself does not form an aerosol. The second substance is held by the first substance before activation. The aerosol forming material can be obtained by loading the first substance with the second substance. In this case, the first substance serves as a carrier material for the second substance. During loading, the second substance is adsorbed on the surface of the first substance. Due to the porosity of the clinoptilolite, the surface area of the first substance is comparatively high, resulting in the above-described high adsorptivity of the first substance. The second substance is held by the first substance after loading until activation takes place. The structural properties of the first and second substances do not change during loading and posture or activation.

A hookah often consists of a closed water tank, through the top of which a substantially vertical smoke column is guided, one end of which projects into the water located in the water tank and the other end terminates in a head portion located outside the water tank , The head part has an air inlet opening. Laterally from the passage opening of the smoke column, a hose is typically provided, which is guided through the top of the water tank, but without touching the water surface in the water tank. Through the distal end of the hose, a user can create an airflow that creates a vacuum in the water tank. This negative pressure in turn generates an air flow, which draws by air from the headboard through the smoke column and the water in the water tank in the water tank. In the head part, the air flow passes through a section, the reservoir, in which a filling material, which is an aerosol-forming material, is located. In most cases, the headboard has an outer surface on which a fuel, such as coal, is located. The surface is usually located above the air inlet opening, through which air enters the head part, so that the air flow does not pass the fuel. The heat produced by burning the fuel heats the aerosol forming material, thereby activating it. If coal is used as fuel, it heats up to temperatures of approx. 600 to approx. 1000 ° C. The fuel and aerosol forming material are spaced apart, for example, by being separated by one or more perforated aluminum foils or a smoke screen. For this reason, the aerosol forming material does not heat to the same extent as the fuel so that the activation temperature, i. H. the temperature at which the first substance releases the second substance is lower than the temperature of the burning fuel. The air flow entering the combustion head through the air inlet now passes through the activated aerosol forming material, taking up the second substance released in the form of an aerosol and transporting it through the combustion tube, the water in the water tank and the hose to the user of the hookah.

The aerosol forming material of the present invention can be used as the aerosol forming material in such a water pipe.

The activation of the aerosol-forming material according to the invention is preferably carried out by the action of heat. Preferably, the activation takes place at a temperature of 120 to 350 ° C, more preferably at a temperature of 150 to 300 ° C. The first substance is stable at these temperatures, especially at 250 ° C and can not burn.

Below the activation temperature, the release of the second substance should be as low as possible, in the best case, especially at room temperature, no second substance should be released from the first substance. An advantage of the clinoptilolith used according to the invention is that below the activation temperature and in particular at room temperature, no noticeable release of the second substance takes place.

The first substance comprises at least 65 wt% clinoptilolite, preferably at least 80 wt% clinoptilolite, more preferably at least 90 wt% clinoptilolite, even more preferably at least 95 wt% clinoptilolite, most preferably at least 99 wt% Clinoptilolite, each based on the first substance. Particularly preferably, the first substance consists exclusively or almost exclusively of clinoptilolite, d. H. the proportion of clinoptilolite in the first substance should be as high as possible. In this way, the advantageous properties of the aerosol-forming material according to the invention can be realized particularly well. The missing to 100 wt .-% missing part consists of other minerals, preferably from natural minerals. The other natural minerals are preferably selected from the group consisting of bentonite, dolomite, illite, kaolinite, montmorillonite, muscovite, feldspar, cristobalite and mixtures thereof.

The clinoptilolite provided according to the invention is a natural mineral which belongs to the group of aluminosilicates. Depending on the geographical origin of the mineral, the chemical composition can be described with different empirical formulas. Common empirical formulas of clinoptilolite are (Ca, K ₂ , Na ₂ , Mg) ₄ Al ₈ Si ₄₀ O ₉₆ .24H ₂ O, (Na, K) ₆ [Al ₆ Si ₃₀ O ₇₂ ]. 20H ₂ O or (Na , K, Ca) ₆ [(Si, Al) ₃₆ O ₇₂ ] · 20H ₂ O.

The first substance is preferably a compact body or granules. If the first substance is a compact body, the dimensions of the body should be at least in one dimension, preferably in each dimension, between 10 mm and 100 mm. The massive body can be inserted into the reservoir.

wobei d die Korngröße darstellt und a, b und c die Kantlängen des Quaders darstellen.More preferably, the first substance is a granule. The granules can adapt to the shape of the reservoir. Preferably, the granules have an extent of at least 0.1 mm and at most 10 mm in each dimension. The grain size of the granules can be between 0.1 mm and 10 mm. The granule size is preferably between 2.5 and 9 mm. In one embodiment, the grain size is between 2.5 mm and 5 mm. In a second embodiment, the grain size is between 5 mm and 9 mm. The indication of the particle size refers in each case to the granules without filling with the second substance. The grain size is equal to the third root of the multiplication of the three different edge lengths of a cuboid, which can just include the grain in its dimension: $$\dot{a}=\sqrt[3]{a*b*c}$$

where d represents the grain size and a, b and c represent the edge lengths of the box.

The first substance is preferably an open-pored material. The pores of the first substance may receive and store the second substance, thereby obtaining the aerosol forming material of the present invention. During activation, for example when the aerosol-forming material is heated by a fuel, the second substance is released again from the pores of the first substance. The first substance is therefore suitable as a carrier for the second substance, d. H. in particular for flavored and / or smoke-emitting fluids. After using the aerosol forming material in a hookah, the first substance can be reused and further serve as a carrier for a second substance.

The second substance is a fluid, preferably an aromatized and / or smoke-emitting fluid. The second substance may be more aromatized and / or smoke-emitting fluids. At least one of the fluids may be a fog fluid. The second substance released after activation of the aerosol forming material forms an aerosol. By an aerosol is meant a colloidal system of a gas and small solid or liquid particles of the second substance dispersed therein. The diameter of the second substance particles in the gas should be between 10 ^-7 to 10 ^-3 cm. If the particles of the second substance distributed in the gas are solid, they may be a smoke-emitting fluid; if they are liquid, the second substance may be a mist-emitting fluid, for example an aromatized fluid. The gas is preferably air, for example the air of the air stream generated in the hookah.

The second substance is preferably selected from the group comprising polyols, flavors, agents, water and mixtures thereof. The prerequisite is that the second substance forms an aerosol upon activation of the aerosol-forming material according to the invention. Exemplary polyols are glycerol, propylene glycol and mixtures thereof. Exemplary flavorings are extracts of fruits, herbs, fruit products, plant products and mixtures thereof. The flavoring agents are preferably present as esters, ethers, oils, monohydric alcohols and mixtures thereof. Preferred flavors are apple flavors, banana flavors, blueberry flavors, Caipirinhaaromen, Cappuchinoaromen, chocolate flavors, cherry flavors, coconut flavors, dragon fruit flavors, grape flavors, guava flavors, honey melon flavors, watermelon flavors, lemon flavors, lime flavors, mango flavors, mint flavors, orange flavors, passion fruit flavors, peach flavors, raspberry flavors, rose flavors, strawberry flavors, tangerine flavors , Woodruff aromas, menthol flavors, whiskey flavors, fig flavors, tobacco flavors and mixtures thereof. Exemplary agents are psychoactive substances such as caffeine, nicotine and mixtures thereof. The flavorings may contain a proportion of water which should be at most 1% by weight, preferably at most 0.5% by weight, in each case based on the flavoring agent. The weight fraction of the second substance indicated for the flavoring agent comprises this water content.

In a preferred embodiment, the second substance is a substance mixture. A preferred mixture of substances is a mixture consisting of at least one polyol and at least one flavoring agent. The proportion of the polyol, based on the second substance, should be at least 90% by weight, preferably at least 95% by weight, in each case based on the second substance. A preferred mixture of substances consists of 95 wt .-% glycerol and 5 wt .-% flavoring, each based on the second substance. The polyol may contain a proportion of water which should be at most 1% by weight, preferably at most 0.5% by weight, in each case based on the polyol. The weight fraction of the second substance given for the polyol comprises the water content.

In one embodiment, the aerosol forming material of the invention is the rock clinoptilolite granules having a grain size between 2.5 mm and 5 mm without a filling of flavored and / or smoke emitting fluids in the pores as a carrier for flavored and / or smoke releasing fluids for use in hookahs ,

The aerosol forming material according to the invention may be formulated, i. H. the first substance is filled with the second substance. Alternatively, the aerosol forming material of the present invention may be offered as a kit providing the first substance separately from the second substance.

According to the invention, the use of clinoptilolite is also provided as a carrier material of an aerosol-forming material for a hookah.

In one embodiment, the rock clinoptilolite is used as granules with a grain size between 2.5 mm and 5 mm without a filling of flavored and / or smoke-emitting fluids in the pores as a carrier for flavored and / or smoke-emitting fluids for use in water pipes.

According to the invention, the use of the aerosol-forming material according to the invention is further provided as a filler for a hookah.

The invention will be explained in more detail below with reference to an embodiment, which is not intended to limit the invention.

Examples example 1 (a) First substance

The first substance used had the following composition, based on the first substance, with the proviso that the sum of the constituents gives 100% by weight: Klinoptilolith 88 to 95% by weight feldspar 3 to 5% by weight montmorillonite 2 to 5% by weight cristobalite 0 to 2% by weight muscovite: 0 to 3% by weight (Total: 100% by weight)

The ingredient clinoptilolite has the following empirical formula: (Ca, K ₂ , Na ₂ , Mg) ₄ Al ₈ Si ₄₀ O ₉₆ .24H ₂ O. The ingredient clinoptilolite has the following chemical composition, based on the ingredient clinoptilolite, with the proviso that the sum of the ingredients is 100% by weight. SiO ₂ 65 to 72% by weight Al ₂ O ₃ 10 to 12% by weight CaO 2.5 to 3.7% by weight K ₂ O 2.3 to 3.5% by weight Fe ₂ O ₃ 0.8 to 1.9% by weight MgO 0.9 to 1.2% by weight Na ₂ O 0.3 to 0.65% by weight TiO ₂ 0 to 0.1% by weight MnO 0 to 0.08% by weight Loss on ignition: 9 to 12% by weight

The first substance had a porosity of 45 to 50% and an average pore diameter of 4 angstroms.

The first substance was a granulate with a particle size of 5 to 9 mm. The grain size was determined by means of a sieve analysis.

The first substance in the aerosol forming material forms the carrier for the second substance, i. H. the flavored and / or smoke-emitting fluids.

(b) Second substance

The second substance used had the following composition, based on the second substance, with the proviso that the sum of ingredients gives 100 wt .-%: Glycerol ¹ : 95% by weight Flavoring: 5% by weight ¹ glycerol 99.5% pure

The aroma was an apple flavor.

The second substance forms in the aerosol-forming material the flavored and / or smoke-emitting fluids which are taken up by the first substance and stored there. With the heating of the aerosol forming material, the fluids are released again.

(c) aerosol forming substance

Using the first and second substances, an aerosol forming substance of the present invention was prepared. For this purpose, 70 g of the first substance were loaded with 30 g of second substance by mixing both substances.

Upon heating the aerosol-forming substance thus obtained to 200 ° C in a water pipe, the second substance was uniformly discharged to form an aerosol.

Example 2

An aerosol-forming material with the following composition was prepared:

(a) First substance

The first substance was the rock clinoptilolite granules with a particle size between 2.5 mm and 5 mm. The clinoptilolite had the chemical composition given in Example 1. This first substance was the carrier for flavored and / or smoke-emitting fluids for use in hookahs.

(b) Second substance

The second substance was flavored and / or smoke-emitting fluids.

(c) Aerosol forming material

The pores of the first substance were filled with the second substance to obtain the aerosol forming material.

Claims (13)

1. Waterpipe aerosol-forming material, comprising a first substance and at least one second substance which is held by the first substance and which, following activation of the aerosol-forming material, is at least partly released, the first substance having pores for accommodating the second substance, and the second substance being a fluid, characterized in that clinoptilolite is used for the first substance.
2. Waterpipe aerosol-forming material according to Claim 1, characterized in that the first substance is in the form of granules.
3. Waterpipe aerosol-forming material according to Claim 2, characterized in that the particle size of the first substance is between 2.5 and 9.0 mm.
4. Waterpipe aerosol-forming material according to Claim 3, characterized in that the particle size of the first substance is between 5.0 and 9.0 mm.
5. Waterpipe aerosol-forming material according to Claim 1, characterized in that the first substance is a compact body.
6. Waterpipe aerosol-forming material according to any of the preceding claims, characterized in that the fluid is selected from the group consisting of polyols, flavouring agents, active ingredients, water and mixtures thereof.
7. Use of an open-pore material as waterpipe aerosol-forming material, characterized in that the open-pore material is clinoptilolite and is formed as a carrier for fluids and the fluid is given off again from the pores after heating by a fuel.
8. Use according to Claim 7, characterized in that the open-pore material is in the form of granules.
9. Use according to Claim 7 or Claim 8, characterized in that the open-pore material has a particle size of 2.5 to 9.0 mm.
10. Use according to any of Claims 8 to 9, characterized in that the clinoptilolite has a particle size of 5.0 to 9.0 mm.
11. Use according to any of Claims 8 to 10, characterized in that the open-pore material is a compact body.
12. Use according to any of Claims 8 to 11, characterized in that the open-pore material, based on its weight, comprises at least 65% by weight of clinoptilolite.
13. Use of the aerosol-forming material according to any of Claims 1 to 7 as waterpipe filling material.