CN115191644A - Preparation method of tobacco original aroma sol generation matrix rod - Google Patents

Abstract

The invention discloses a preparation method of a tobacco local aroma sol generation matrix rod. The aerosol-generating substrate rod has a porosity of greater than 70%; an aerosol-generating substrate rod comprising a foamed substrate body having a pore structure with a smoking substance, a flavouring substance and a first tobacco substance therein; the surface of the foam-like substrate body is provided with a smoking substance, a flavoring substance and a second tobacco substance. According to the aerosol generating substrate rod, the foam substrate main body is prepared, then the foam substrate main body is vacuumized and used as a carrier to adsorb smoke substances, aroma-enhancing substances and first tobacco substances, and then the surface of the foam substrate main body is coated with the second tobacco substances after being inflated.

Description

A kind of preparation method of tobacco-based aroma sol generating matrix rod

technical field

The invention belongs to the technical field of heat-not-burn cigarettes, and in particular relates to a preparation method of a tobacco-based aroma sol to generate a matrix rod.

Background technique

With the improvement of living standards, people pay more and more attention to their own health problems. In recent years, there has been a lot of attention to the health problems of smoking. In order to meet the changing consumer demands, major domestic and foreign companies have developed various completely hollow tobacco products to replace traditional cigarettes. E-cigarettes and heat-not-burn cigarettes are at the forefront of these growing fully hollow tobacco products.

As an expanded application of electronic products in the tobacco industry, the advantage of electronic cigarettes is that the taste of smoke is highly variable, and the taste of smoke can be adjusted arbitrarily by adjusting the components of the smoke oil. The taste, especially the heat sensation, is still different from the traditional cigarettes that are heated to generate smoke, and the acceptance of old smokers is poor.

Heat-not-burn cigarettes generate smoke by heating the smoking section of the cigarette, and the taste of the smoke produced is well accepted. At present, the smoking section of the heat-not-burn cigarettes in the market is disorderly filled reconstituted tobacco sheet or cigarette smoke. Bulk smoking particles, in which the former smoking segments in the form of reconstituted tobacco leaf flakes filled in disorder, have a certain problem of insufficient smoke volume during the smoking process. The insufficient amount of smoke is mainly due to: (1) the reconstituted tobacco leaf sheet used as the smoking section requires a certain processing strength during the filling process, which also results in a small amount of flavors and smoking agents added to it; (2) The reconstituted tobacco sheet after adding flavor and smoking agent also needs to go through several high-temperature treatment procedures, resulting in serious volatilization of the added flavor and smoking agent; (3) Since the reconstituted tobacco sheet is closely arranged in the smoking section, away from The smoke generated at the front end of the smoking section of the filter section will be largely trapped at the rear end. Compared with the former, the smoking section in the form of bulk fuming particles has a certain improvement in the amount of smoke, but there is a new problem: because the bulk fuming particles cannot be fixed, they must be filled into the outer shell by filling. In the pipe, and the two sides of the smoking particle section need to be fixed by means of sealing paper and blocking parts, the production efficiency is low and the defective rate is high.

In addition, the existing aerosol-generating matrix rods usually add tobacco extract or tobacco extract, which can supplement the tobacco aroma to a certain extent, but still has a certain gap with the real tobacco aroma.

Therefore, it is desirable to provide a smoking unit with a large amount of smoke, a rich aroma, and an aroma closer to that of tobacco, with a simple preparation method and no need for sealing paper and blocking members.

In order to solve the above problems, the present invention has been proposed.

SUMMARY OF THE INVENTION

In the present invention, the foamed matrix body is first prepared, and after vacuuming the foamed matrix body, it is used as a carrier to adsorb smoking substances and aroma-enhancing substances, and then the surface of the foam-shaped base body on which the smoking substances and aroma-enhancing substances are adsorbed is adsorbed. Coating tobacco material, the aerosol generation matrix rod obtained by the preparation method has high porosity, and the smoking material and aromatizing material are uniformly distributed in the pore structure, and the aerosol generation product has a large amount of smoke and a comfortable feeling of smoke. It has the advantages of high temperature, suitable flue gas temperature and closer to the original aroma of tobacco.

A first aspect of the present invention provides a method for preparing a tobacco-based aroma sol-generating matrix rod, wherein the porosity of the aerosol-generating matrix rod is greater than 70%; the aerosol-generating matrix rod comprises a foam-like matrix body with a pore structure, The pore structure has a smoking substance, an aromatizing substance and a first tobacco substance; the surface of the foam-like matrix body has a smoking substance, an aromatizing substance and a second tobacco substance;

The preparation method includes the following steps:

(1) Preparation of a foamed matrix body with a porosity greater than 70%;

(2) vacuuming the foamed matrix body to remove the air in the pore structure of the foamed matrix body;

(3) preparing a first mixed solution containing a smoking substance, an aromatizing substance and a first tobacco substance, and a second mixed solution containing a smoking substance, a binder and an aromatizing substance, and then evacuating the vacuumed The foam-like matrix body is soaked in the first mixed liquid, and the second tobacco substance is soaked in the second mixed liquid;

(4) Take out the foam-like matrix body impregnated with the first mixed liquid and the second tobacco substance adsorbed with the second mixed liquid, let stand, and then apply coating on the surface of the foam-like matrix main body impregnated with the first mixed liquid The second tobacco substance adsorbed with the second mixed solution is covered and dried to obtain the aerosol-generating matrix rod.

Preferably, the outer side of the foam-like matrix body is provided with an impermeable layer.

Preferably, the anti-seepage layer is an anti-seepage/heat-conducting layer with anti-seepage or heat-conducting function, and the anti-seepage/heat-conducting layer includes a waterproof layer and/or an oil-proof layer and/or a heat-conducting layer;

The waterproof layer is made of alkyl ketene dimer AKD, cationic rosin gum or mixed with iron-free aluminum sulfate and paraffin material; the oil-proof layer is made of fluorocarbon organics, modified starch, AKD and paraffin mixture, AKD and modified starch mixture The thermally conductive layer is selected from, but not limited to, an aluminum foil layer, which is added to the outside of the foam-like matrix body by pasting; the aluminum foil layer can play a role of waterproof and/or oil-proof, and at the same time, the aluminum foil layer also has thermal conductivity and thermal insulation function, so that the smoking material on the inner wall of the cigarette is heated evenly.

Preferably, the water-repellent layer and/or the oil-repellent layer is coated on the outside of the foam-like matrix body by spraying.

During the storage process of cigarettes, the moisture in the smoking material seeps into the outside of the cigarette paper tube, resulting in macula. The waterproof layer is made of alkyl ketene dimer AKD, cationic rosin gum or mixed with iron-free aluminum sulfate, and paraffin material, which can prevent the moisture in the smoking material from penetrating to the outside of the cigarette paper tube.

Similarly, smoking agents, flavors and fragrances will be added to the smoking material. During the long-term storage process, the smoking agent in the smoking material will carry flavors and fragrances and penetrate to the outside of the paper tube, resulting in macula and affecting the appearance of the paper tube. Since the fuming agent is oily. The oil-proof layer is made of fluorocarbon organic matter, modified starch, AKD and paraffin mixture, AKD and modified starch mixture material, which can prevent the smoking agent in the smoking material from infiltrating the outer wall of the paper tube with the flavors and fragrances, and prevent the generation of macula.

Preferably, there are multiple pore structures.

Preferably, the flavoring substance includes flavors and fragrances such as menthol, ionone, ethyl maltol, vanillin or rose absolute; the smoking substance includes glycerin or propylene glycol smoking agent; the first tobacco substance Including a tobacco water extract, the second tobacco material includes tobacco powder.

Tobacco powder here can be called tobacco dry material, which is cigarette industry wastes such as tobacco stems, tobacco stalks and tobacco powders, which are pulverized into 8-50 mesh tobacco powder.

Preferably, in step (1), the preparation method of the foamed matrix body is:

11) Mix the polysaccharide substance powder, foaming agent, dispersing agent and coagulant evenly and dissolve it into an alcohol solution with a volume concentration of 0-15% v/v to prepare a foaming slurry;

12) the foaming slurry obtained in the previous step is uniformly dispersed and loaded into a mold, and placed under high temperature conditions for foaming for 10-30 minutes to obtain the foamed composition;

13) The foamed composition obtained in the previous step is placed in a freezer at about -20°C and frozen for 12-48 hours, taken out, dehydrated, naturally dried or dried to obtain the foamy matrix body;

Preferably, in step (11), the polysaccharide substance powder is selected from one or more powders of konjac, starch, modified starch cellulose or glucomannan; the foaming agent is selected from foaming agent AC , one or more of foaming agent H, foaming agent OBSH, foaming agent TSH; described dispersant is selected from one or more of OP-10, Span80, sucrose ester; described coagulant is selected from Sodium carbonate.

Preferably, in step (12), the foaming condition is foaming in an oven, drying room or oil bath at a temperature of 160-240°C.

Preferably, in step (2), the vacuuming condition is to directly put the foamed matrix body into a vacuum bag for vacuuming, and then inject the mixed solution into the vacuum bag containing the foamed matrix body through the pressure relief port.

Preferably, in step (3), the aromatizing substances include menthol, ionone, ethyl maltol, vanillin, rose absolute and other flavors and fragrances; the smoking substances include glycerin or propylene glycol smoking agents; The first tobacco material includes tobacco water extract, and the second tobacco material includes tobacco powder;

The mass ratio of each substance in the first mixed solution is: the content of flavor and fragrance is 10%-25%, the content of smoking agent is 10%-25%, and the content of tobacco water extract is 50%-80%;

The mass ratio of each substance in the second mixed solution is as follows: the content of binder is 1-10%, the content of flavor and fragrance is 20%-40%, and the content of smoking agent is 50%-80%; The mass ratio of tobacco substances is 1:1-3:1;

The soaking time is 10-20 minutes.

In particular, for volatile flavors and fragrances, such as menthol, blueberry flavor, orange flavor, etc., activated carbon can be used to adsorb the volatile flavors and fragrances, and then the tobacco powder, the activated carbon powder for adsorbing flavors and fragrances are soaked in the binder and In the smoking agent mixture, after soaking and swelling, tobacco powder and activated carbon powder are then coated on the main body of the foam matrix. Based on the total mass of tobacco powder and activated carbon powder, the mass ratio of activated carbon powder is 0-20. %.

Preferably, in step (4), let stand for 10 minutes, the thickness of the second tobacco substance layer is 0.1-2.0mm, and the size of the tobacco powder is 8-50 mesh; the tobacco powder here can be called tobacco dried Material, which is cigarette industry wastes such as tobacco stems, tobacco stalks and tobacco powders, which are pulverized into 8-50 mesh cigarette powder. The binder is selected from chitosan, hydroxyethylated compound modified ethyl cellulose, guar gum, carboxymethyl cellulose, starch, modified starch, plant cellulose, microcrystalline fiber Vegetarian, Hydroxyethyl Cellulose, Hydroxyethyl Methyl Cellulose.

The drying method is low temperature drying or microwave drying, and the low temperature drying conditions are: the drying temperature is 60-70 ℃, and the drying time is 0.5-1 hour; the microwave drying conditions are: the microwave power is 100-120W, and the microwave time is 10 -30min; dry until the moisture content of the aerosol-generating matrix rod is 10%-20%.

In the present invention, the preferred method for preparing the foamed matrix body is as described above. Of course, other methods in the prior art that can prepare a foamed matrix body with a porosity greater than 70% can also be applied to the present invention.

The second aspect of the present invention provides an aerosol-generating matrix rod prepared by the preparation method described in the first aspect of the present invention.

A third aspect of the present invention provides an aerosol-generating product, comprising the aerosol-generating matrix rod 1 described in the second aspect of the present invention, an air-permeable hollow tube 2 and a filter rod 3; The ventilation hole 21 radially penetrates the wall of the air-permeable hollow tube 2; the aerosol generation matrix rod 1, the air-permeable hollow tube 2 and the filter rod 3 are wrapped by forming paper, and then wrap the tipping paper to obtain the gas. Sol-generating products.

In the actual preparation process, only one aerosol can be wrapped with forming paper to generate matrix rod 1, breathable hollow tube 2 and filter rod 3, or a plurality of aerosols can be wrapped in sequence to generate matrix rod 1, breathable hollow tube 2 and filter rod 3. After the rod 3 obtains a plurality of aerosol-generating articles wrapped with tipping paper, it is slit and then wrapped with tipping paper. That is, the matrix rod 1, the air-permeable hollow tube 2, the filter rod 3, the filter rod 3, the air-permeable hollow tube 2 and the aerosol generation matrix rod 1 can be wrapped successively with forming paper, and then the filter rod 3 is divided into Two sections, and then wrap the tipping paper. In addition, it can also be cut at the connected aerosol-generating matrix rod 1.

Because the aerosol-generating matrix rod 1 of the present invention is integrated, it can be combined with the air-permeable hollow tube 2 and the filter rod 3, etc., and in the case of improving the suction quality, compared with the prior art through the filling process alone The efficiency of each filling unit is greatly improved.

Preferably, a grooved corrugated member 4 is further provided between the aerosol-generating matrix rod 1 and the air-permeable hollow tube 2 . For the structure of the grooved corrugated part 4, reference can be made to the patent application filed by the applicant on 2022-03-15, the application number is 2022102553475, and the title is a patent application for a particle-type aerosol generation product with a grooved corrugated part. References in the application to grooved corrugated components are incorporated into this application.

In the present invention, the air-permeable hollow tube 2 can be a paper tube or an acetate hollow tube. Preferably, the ventilation hole 21 is axially close to the filter rod 3, and the axial distance from the upstream end of the filter rod 3 is the axial length of the filter rod 3. 1/2-1/3 of . The upstream and downstream in the present invention are determined by the flow direction of the aerosol.

The filter rod 3 in the present invention can be any form of filter element in the prior art, such as a commonly used acetate fiber filter cotton.

The aerosol-generating article of the present invention may also include other structures, as long as it includes the aerosol-generating matrix rod described in the first aspect of the present invention, it is within the scope of the present application.

Compared with the prior art, the beneficial effects of the present invention:

1. The present invention uses the porous foam material made of polysaccharide substance powder as the main body of the aerosol-generating matrix rod for the first time. Foaming mainly includes three processes: gelation, heating foaming and freeze forming. The polysaccharide powder first forms a three-dimensional network structure under the action of a coagulant, that is, a gel is formed; then it is heated and foamed, and the foaming agent in the gel is decomposed to generate bubbles, forming a porous structure; finally, the porous coagulation is carried out. The gel is frozen, the water in the gel forms ice crystals and precipitates out, the solid concentration increases accordingly, and the plant molecules are more tightly combined due to the extrusion of the ice crystals, so that the foam-like matrix main body with a pore structure of the present invention is obtained by fixing and molding, with a large number of pores. The structure ensures that the aerosol-generating matrix rod can adsorb and carry more smoking substances and aroma-enhancing substances. Further, the pore structure of the foam-like matrix body itself is also conducive to the release of smoke, avoiding the smoke generated upstream of the aerosol-generating matrix rod. The problem of being intercepted by the downstream improves the smoke volume and smoke aroma quality from two aspects.

2. The present invention first prepares the foamed matrix main body, and then uses it as a carrier to absorb the smoky substances and flavoring substances, and does not directly combine the smoking substances, flavoring substances, polysaccharide substance powders, foaming agents, etc. together. The reasons for foaming are as follows: First, the addition of fuming substances and aroma-enhancing substances during the foaming process will greatly affect the foaming effect, and it is difficult to obtain a foamed matrix body with high porosity. Second, due to the high temperature during the foaming process, usually between 160-240 °C, such a high temperature causes most of the fuming substances and aroma-enhancing substances to be volatilized during the foaming process. There are few smoky substances and aroma-enhancing substances in the foam-like matrix, which leads to the problem that the amount of smoke in the aerosol-generating matrix rod is small during the smoking process, and the sensory evaluation of aroma is poor.

3. The present invention prepares the foamed matrix main body, first soaks and absorbs the mixed solution containing smoking material, flavoring material and tobacco water extract, and simultaneously soaks the tobacco powder in the mixture containing smoking material, binding agent and flavoring material. Imbibition is carried out in the mixed liquid of the cigarette, and then the surface of the main body of the foam-like matrix adsorbed with the smoking substance and the aromatizing substance is coated with a binder, and then the imbibed tobacco powder is coated. Compared with tobacco extract or tobacco extract, tobacco powder is beneficial to provide an aerosol closer to the original aroma of tobacco, but the physical properties of tobacco powder prevent it from being added to the foam matrix body by soaking and adsorption. In addition, If the tobacco powder is directly added during the preparation of the foamed matrix body, the foaming process will be affected, and the porosity of the foamed matrix body will be greatly reduced. Therefore, the present invention firstly prepares a foam-like matrix body, then soaks and adsorbs the mixed solution containing the smoking material, the flavoring material and the tobacco water extract, and finally absorbs the foamed material with the smoking material, the flavoring material and the tobacco water extract. The surface of the substrate main body is coated with imbibed tobacco powder, and on the basis of ensuring the porosity, the tobacco original flavor is better provided. However, if the dry tobacco powder is directly coated on the surface of the foamed matrix main body, the tobacco powder will absorb the mixed liquid of the foamed matrix main body, thereby causing the tobacco powder to swell, and the tobacco powder will fall off and the appearance will be poor. In the invention, when the foamed matrix body is soaked in the adsorption mixture, the tobacco powder is soaked into the mixture and swelled at the same time, so as to prevent the tobacco powder on the foamy matrix body from adsorbing the mixture again, and further, the introduction of the binder further prevents the tobacco powder. fall off.

4. The present invention encounters a new problem in the process of soaking and adsorbing the mixed solution containing the fuming substance and the aromatizing substance. The present invention notices that during the foaming process, the bubbles inside the foam matrix body merge during the release process, resulting in smaller pores along the radial direction of the aerosol-generating matrix rod and close to the central axis, while the closer the outer pores are, the smaller the pores are. If the obtained porous foam matrix body is directly immersed in the mixture containing smoky substances and flavoring substances by the infiltration method, or the mixture is directly coated on the outer surface of the foam matrix body by the spray method, due to the peripheral The larger the pores, the stronger the adsorption capacity, the smaller the pores in the inner layer, the weaker the adsorption capacity, so the way of applying supplements from the periphery and then diffusing to the inner layer has a large diffusion resistance, which will cause a large number of supplements to be absorbed by the outer layer. It is difficult and rarely diffused to the inner layer, and even the mixed liquid cannot be contacted at the central axis at all. In order to avoid this problem, the only way to avoid this problem is to further increase the amount of mixed liquid or prolong the soaking time until the inner layer has pores. All structures can absorb supplements, but this will lead to excessive amount of mixed liquid and excess mixed liquid in the outer layer, which is prone to macular exudation, and the temperature of the flue gas will be too hot. Therefore, in the method of applying the mixed solution from the periphery, there is a problem that the amount of the mixed solution is large or the distribution of the mixed solution is not uniform. In order to further solve this problem, in the present invention, the foamed matrix body is first evacuated, the air in the pore structure of the foamed matrix body is evacuated, and then the evacuated foamed matrix body is immersed in a mixed In this way, under a certain external pressure, the mixed liquid can quickly enter the pore structure, and also enter the pore structure of the inner layer more smoothly. On the premise, it is ensured that the mixed solution enters the pore structure of the inner layer of the foam-like matrix main body, so that the mixed solution is uniformly distributed in the pore structure. The aerosol-generating matrix rod obtained by the preparation method has high porosity, and the smoky substances and aroma-enhancing substances are uniformly distributed in the pore structure. suitable advantage.

5. The aerosol of the present invention generates a matrix rod that contains both the tobacco water extract and the tobacco powder. If only the tobacco powder is used to provide the tobacco original incense, when the tobacco powder coating is too thick, the tobacco powder wrapped in the outer layer will Overall reduction in smoke production. When the tobacco powder coating is too thin, the aroma and strength of the tobacco are obviously insufficient. The aerosol-generating matrix rod of the present invention includes both the tobacco water extract and the tobacco powder, and under the premise of ensuring the amount of smoke, the original tobacco flavor is better provided.

6. The production process of the aerosol generation matrix rod is simple, the production efficiency of the aerosol generation product is high, and the cost is controllable.

7. The aerosol generation matrix rod 1 of the present invention is integrated, so it can be combined with the air-permeable hollow tube 2 and the filter rod 3, etc., and when the suction quality is improved again, compared with the prior art, through the filling process The efficiency of filling each unit one by one is greatly improved.

Description of drawings

Fig. 1 is the structural representation of the aerosol generation product of Example 1;

FIG. 2 is a schematic diagram of the structure of the aerosol-generating product in Example 2. FIG.

Designations of reference numerals in the description of the drawings: 1-aerosol-generating matrix rod, 2-breathable hollow tube, 3-filter rod, 4-grooved corrugated part, 21-ventilation hole.

Detailed ways

The present invention will be further described in detail below in conjunction with the embodiments.

Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be construed as limiting the scope of the present invention. If no specific technology or condition is indicated in the examples, the technology or condition described in the literature in the field or the product specification is used. If the materials or equipment used are not marked with the manufacturer, they are all conventional products that can be obtained through purchase.

It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of stated features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components and/or groups thereof. It will be understood that when we refer to an element as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Also, "connection" as used herein may include wireless connections.

In the description of the present invention, unless otherwise specified, "plurality" means two or more. The orientation or state relationship indicated by the terms "inside", "upper", "lower", etc. is based on the orientation or state relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the indicated A device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "provided with" should be understood in a broad sense, for example, it may be a fixed connection or a Removal connection, or integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention will be understood according to specific situations.

It will be understood by those skilled in the art that, unless otherwise defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as herein, are not to be taken in an idealized or overly formal sense. explain.

Example 1

As shown in Figure 1, the aerosol-generating product has a ternary structure, which includes an aerosol-generating matrix rod 1, a ventilating hollow tube 2 and a filter rod 3; the ventilating hollow tube 2 has a radially extending through the ventilating hollow tube The ventilation holes 21 in the tube wall of the tube 2; the aerosol-generating matrix rod 1, the air-permeable hollow tube 2 and the filter rod 3 are wrapped by forming paper, and then wrapping the tipping paper to obtain the aerosol-generating product. The ventilation hole 21 is axially close to the filter rod 3 , and its axial distance to the upstream end of the filter rod 3 is 1/2 of the axial length of the filter rod 3 .

The porosity of the aerosol-generating matrix rod is 80%; the aerosol-generating matrix rod comprises a foam-like matrix body having a pore structure, and the pore structure has a smoking substance, an aromatizing substance and a first tobacco substance; The surface of the foam-like matrix body has a smoking substance, an aromatizing substance and a second tobacco substance. The outer side of the foam-like matrix body is provided with an impermeable layer. The flavoring substance comprises menthol; the smoking substance comprises propylene glycol; the first tobacco substance comprises tobacco water extract, and the second tobacco substance comprises tobacco powder.

The preparation method of aerosol generation matrix rod, comprises the following steps:

(1) Preparation of a foam-like matrix body with a porosity of 80%;

(2) vacuuming the foamed matrix body to remove the air in the pore structure of the foamed matrix body;

(3) preparing a first mixed solution containing a smoking substance, an aromatizing substance and a first tobacco substance, and a second mixed solution containing a smoking substance, a binder and an aromatizing substance, and then evacuating the vacuumed The foam-like matrix body is soaked in the first mixed liquid, and the second tobacco substance is soaked in the second mixed liquid;

(4) Take out the foam-like matrix body impregnated with the first mixed liquid and the second tobacco substance adsorbed with the second mixed liquid, let stand, and then apply coating on the surface of the foam-like matrix main body impregnated with the first mixed liquid The second tobacco substance adsorbed with the second mixed solution is covered and dried to obtain the aerosol-generating matrix rod.

In step (1), the preparation method of the foamed matrix body is:

11) The polysaccharide substance powder, foaming agent, dispersing agent and coagulant are mixed uniformly and dissolved in an alcohol solution with a volume concentration of 10% v/v to prepare a foaming slurry;

12) the foaming slurry obtained in the previous step is uniformly dispersed and then loaded into the mold, and placed under high temperature conditions for foaming for 20 minutes to obtain the foamed composition;

13) The foamed composition obtained in the previous step is placed in a freezer at about -20°C and frozen for 36 hours, taken out, dehydrated, naturally dried or dried to obtain the foamed matrix body;

In step (11), the polysaccharide substance powder is selected from konjac flour; the foaming agent is selected from foaming agent AC; the dispersant is selected from Span80; the coagulation agent is selected from sodium carbonate. In step (12), the foaming condition is foaming in an oven at a temperature of 200°C.

In step (2), the vacuuming condition is to directly put the foamed matrix body into a vacuum bag for vacuuming, and then inject the mixed solution into the vacuum bag equipped with the foamed matrix body through the pressure relief port. In step (3), the flavoring material includes menthol; the smoking material includes propylene glycol; the first tobacco material includes tobacco water extract, and the second tobacco material includes tobacco powder. The mass ratio of each substance in the first mixed solution is: 25% of flavors and fragrances, 20% of smoking agent, and 55% of tobacco water extract; the mass ratio of each substance in the second mixed solution is: the binder content is 5%, The content of flavor and fragrance is 25%, and the content of smoking agent is 70%; the mass ratio of the second mixed solution and the second tobacco substance is 2:1. The soaking time is 15 minutes. In step (4), let stand for 10 minutes, the size of the tobacco powder is 8-50 mesh, and the thickness of the coating second tobacco substance layer is 1.0 mm. The binder is selected from carboxymethyl cellulose. The drying method is low-temperature drying, and the low-temperature drying conditions are: the drying temperature is 65° C., the drying time is 0.5 hour, and the moisture content of the aerosol-generated matrix rod is 12%.

The resulting aerosol-generating article is referred to as Sample 1.

Example 2

The difference from Example 1 is that the fuming substance, the aromatizing substance, the polysaccharide substance powder, the foaming agent, etc. are directly foamed together, and the specific steps are as follows:

11) Dissolve polysaccharide substance powder, foaming agent, dispersant, coagulant, flavoring substance menthol, fuming substance propylene glycol and tobacco powder into the alcohol solution whose volume concentration is 10% v/v after mixing uniformly, and prepare into foaming slurry;

12) the foaming slurry obtained in the previous step is uniformly dispersed and then loaded into the mold, and placed under high temperature conditions for foaming for 20 minutes to obtain the foamed composition;

13) The foamed composition obtained in the previous step is placed in a freezer at about -20°C and frozen for 36 hours, taken out, dehydrated, naturally dried or dried to obtain the foamed matrix body;

Tobacco powder here can be called tobacco dry material, which is cigarette industry wastes such as tobacco stems, tobacco stalks and tobacco powders, which are pulverized into 8-50 mesh tobacco powder.

Other steps are the same as in Example 1.

The resulting aerosol-generating article, referred to as Sample 2, had a porosity of only 35% for the aerosol-generating matrix rod.

Example 3

The difference with Example 1 is that the vacuuming process of step (2) is omitted, and the prepared foamy matrix body is directly immersed in the mixed solution containing smoking material, flavoring material and tobacco material, which is the same as the step. Same as Example 1. The resulting aerosol-generating article is referred to as Sample 3.

Example 4

The difference from Example 1 is that there is a grooved corrugated part 4 between the aerosol-generating matrix rod 1 and the air-permeable hollow tube 2 , and the prepared aerosol-generating product is called sample 4.

Example 5

The difference with Example 1 is that in step (3) in the preparation process of the aerosol generation matrix rod, a mixed solution containing smoking material, aromatizing material and tobacco water extract is directly configured, and then the foamed foam after vacuuming is used. The matrix body is immersed in the mixed solution, and in step (4), there is no need to coat the surface of the foamed matrix body with tobacco material.

Example 6

The aerosol-generating product samples 1-5 were respectively smoked with the matching heat-not-burn cigarette set under the same conditions. During the smoking process, the temperature of the aerosol-generating product aerosol-generating matrix rod 1 was about 200°C. The sensory evaluation of the aerosol-generated products is carried out by a number of sensory evaluation personnel, mainly examining six indicators of smoke volume, aroma, energy, coordination, irritation, and taste; the scoring values of the six quality inspection indicators are: Smoke volume 0-10 points, aroma 0-30 points, energy 0-10 points, coordination 0-10 points, irritation 0-15 points, taste 0-25 points, the total score of 6 evaluation indicators is 100 The higher the scores of the five evaluation indicators of smoke volume, aroma, energy, coordination and taste, the stronger the feeling of the evaluation index during the smoking process, and the higher the irritation evaluation index score, the higher the evaluation index during the smoking process. The less obvious the feeling is, and the higher the total score of the 6 evaluation indicators, the better the suction feeling of the aerosol-generating article. Among them, the sensory evaluation scores of the aerosol-generating product samples 1-4 are shown in Table 1.

Mainly according to Q/YNZY.J07.022.

Table 1 Sensory evaluation scores of different aerosol-generating product samples during suction

According to the data in Table 1, comparing the sample 1 of the aerosol-generating product with the sample 2 of the aerosol-generating product, it can be seen that directly foaming the fuming substance and the aromatizing substance, the polysaccharide substance powder, the foaming agent, etc. together, the prepared aerosol is obtained. The resulting matrix rod has a porosity of only 35%, which directly results in significantly lower scores for sample 2 for smoke volume and aroma aroma than for sample 1.

Comparing the aerosol-generating product sample 1 and the aerosol-generating product sample 3, it can be seen that even if the same foam-like matrix body is used, before it soaks and adsorbs the smoking substances and aroma-enhancing substances, whether it is evacuated or not, the sensory evaluation of its smoking is also satisfactory. important. The vacuuming process is omitted, and the prepared foamy matrix main body is directly immersed in the mixed solution containing the fuming substance, the aromatizing substance and the tobacco substance. Directly results in significantly lower scores for sample 2 for smoke volume and coordination than for sample 1.

In addition, the smoke temperature of the aerosol-generating article sample 1 entering the mouth of the smoker was 39.2°C, while the temperature of the smoke entering the mouth of the smoker of the aerosol-generating article sample 4 was 38.9°C, which is because the fluted corrugated part has a cavity , The ventilating hollow section also has a cavity, and the introduced air can better contact and mix with the flue gas, further reducing the flue gas temperature.

Comparing the aerosol-generating product sample 1 and the aerosol-generating product sample 5, it can be seen that, compared with the sample 5 obtained by directly soaking and adsorbing the mixture containing the tobacco water extract, the surface of the foam-like matrix main body adsorbed with the smoking substances and flavoring substances was coated. During the smoking process of Sample 1 obtained by coating the tobacco powder, the aerosol smoked by the sensory analyst is closer to the original aroma of tobacco.

Claims (10)

1. A method of preparing a tobacco-based aroma sol-generating substrate rod, wherein the porosity of the aerosol-generating substrate rod is greater than 70%; the aerosol-generating substrate rod comprises a foamed substrate body having a pore structure with a smoking substance, a flavouring substance and a first tobacco substance therein; the surface of the foam-shaped substrate main body is provided with a smoking substance, a flavoring substance and a second tobacco substance;

the preparation method comprises the following steps:

(1) Preparing a foamed matrix body having a porosity of greater than 70%;

(2) Evacuating the foam-like substrate body to remove air from the pore structure of the foam-like substrate body;

(3) Preparing a first mixed solution containing a smoke substance, a flavoring substance and a first tobacco substance and a second mixed solution containing the smoke substance, a binder and the flavoring substance, then soaking the vacuumized foam-shaped substrate main body in the first mixed solution, and soaking the second tobacco substance in the second mixed solution;

(4) And taking out the foamed substrate body impregnated with the first mixed solution and the second tobacco material adsorbed with the second mixed solution, standing, coating the surface of the foamed substrate body impregnated with the first mixed solution with the second tobacco material adsorbed with the second mixed solution, and drying to obtain the aerosol-generating substrate rod.

2. The method of manufacturing according to claim 1, wherein the foamed substrate body has a barrier layer on the outside;

the pore structure is a plurality of pores.

3. The process according to claim 1, characterized in that said fragrancing substance comprises menthol, ionone, ethyl maltol, vanillin or rose absolute flavor; the smoking material comprises a glycerin or propylene glycol smoke generator; the first tobacco material comprises a tobacco water extract and the second tobacco material comprises tobacco powder.

4. The method according to claim 1, wherein in the step (1), the method for preparing the foamed substrate body comprises:

11 Mixing the polysaccharide powder, the foaming agent, the dispersing agent and the coagulating agent, and dissolving the mixture into an alcohol solution with a volume concentration of 0-15% v/v to prepare foaming slurry;

12 Loading the foaming slurry obtained in the previous step into a mold, and foaming for 10-30 minutes at a high temperature to obtain a foamed composition;

13 Placing the foamed composition obtained in the previous step into a freezer at about-20 ℃ for freezing for 12-48 hours, taking out, dehydrating, and naturally drying or baking to obtain the foam matrix main body.

5. The method according to claim 4, wherein in the step (11), the polysaccharide powder is one or more selected from konjac, starch, modified starch cellulose and glucomannan; the foaming agent is selected from one or more of foaming agent AC, foaming agent H, foaming agent OBSH and foaming agent TSH; the dispersing agent is selected from one or more of OP-10, span80 and sucrose ester; the coagulant is selected from sodium carbonate;

in the step (12), the foaming condition is foaming in an oven, a drying room or an oil bath at the temperature of 160-240 ℃.

6. The process according to claim 1, characterized in that, in step (3), said flavouring substances comprise menthol, ionone, ethyl maltol, vanillin or rose absolute flavour; the smoking material comprises a glycerin or propylene glycol smoke generator; the first tobacco material comprises a tobacco water extract and the second tobacco material comprises tobacco powder;

the mass ratio of each substance in the first mixed solution is as follows: 10-25% of essence and spice, 10-25% of smoke agent and 50-80% of tobacco water extract;

the mass ratio of each substance in the second mixed solution is as follows: 1-10% of adhesive, 20-40% of essence and spice and 50-80% of smoke agent; the mass ratio of the second mixed solution to the second tobacco substance is 1;

the soaking time is 10-20 minutes.

7. The method according to claim 1, wherein in the step (4), the second tobacco material layer is left standing for 10 minutes to have a thickness of 0.1 to 2.0mm, and the tobacco powder has a size of 8 to 50 mesh; the binder is selected from chitosan, hydroxyethylated complex modified ethyl cellulose, guar gum, carboxymethyl cellulose, starches, modified starches, plant celluloses, microcrystalline cellulose, hydroxyethyl cellulose and hydroxyethyl methyl cellulose.

The drying mode is low-temperature drying or microwave drying, and the low-temperature drying condition is as follows: the drying temperature is 60-70 ℃, and the drying time is 0.5-1 hour; the microwave drying conditions were: the microwave power is 100-120W, and the microwave time is 10-30min; drying to a moisture content of 10% to 20% of the aerosol-generating substrate rod.

8. An aerosol-generating substrate rod produced by the method of manufacture of any one of claims 1 to 7.

9. An aerosol-generating article characterized in that it comprises an aerosol-generating substrate rod (1) according to claim 8, a gas-permeable hollow tube (2) and a filter rod (3); the air-permeable hollow pipe (2) is provided with an air vent (21) which radially penetrates through the pipe wall of the air-permeable hollow pipe (2);

the aerosol-generating substrate rod (1), air-permeable hollow tube (2) and filter rod (3) are wrapped with a paper former and then with a tipping paper to give the aerosol-generating article.

10. An aerosol-generating article according to claim 9, characterized in that there is further a fluted corrugated substance (4) between the aerosol-generating substrate rod (1) and the air-permeable hollow tube (2).

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