CN111184247A - Polyvinyl alcohol-based fragrance slow-release material, composite sheet, preparation method of composite sheet and application of composite sheet in heating non-combustible tobacco products - Google Patents
Polyvinyl alcohol-based fragrance slow-release material, composite sheet, preparation method of composite sheet and application of composite sheet in heating non-combustible tobacco products Download PDFInfo
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- CN111184247A CN111184247A CN201811256032.2A CN201811256032A CN111184247A CN 111184247 A CN111184247 A CN 111184247A CN 201811256032 A CN201811256032 A CN 201811256032A CN 111184247 A CN111184247 A CN 111184247A
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/12—Steaming, curing, or flavouring tobacco
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
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Abstract
The invention belongs to the technical field of heating non-combustion cigarettes, and particularly discloses a polyvinyl alcohol-based flavor slow-release material for heating non-combustion tobacco products. The invention also provides a composite sheet compounded with the slow release material. In addition, the invention also provides a preparation method of the slow-release material and the composite sheet and an application method of the slow-release material and the composite sheet in heating non-combustible cigarettes. The invention innovatively discovers that the material is applied to a heating non-combustible tobacco product, and can overcome the technical problems that the fragrance of the first chewing tobacco product is too strong, the fragrance of the second chewing tobacco product is basically volatilized, the specific quality and style characteristics of the product are difficult to endow and the like caused by the fact that the fragrance is quickly released in the perfuming technology of the heating non-combustible tobacco product. The invention can obviously improve the fragrance slow-release effect of the product, improve the sensory quality of smoking and endow the product with stable quality and style characteristics.
Description
Technical Field
The invention relates to a method for slowly releasing the fragrance of a heating non-combustible tobacco product and application thereof, belonging to the technical field of novel slow release of the fragrance of the tobacco product.
Background
The heating non-combustion tobacco product (low-temperature tobacco) is a novel tobacco product with the flavor characteristics closest to the traditional cigarette, has lower harmful chemical components and biological toxicity in the smoke, and is the development focus of the tobacco industry of various countries in the world at present.
However, since the tobacco heating part is always in a heating state in the smoking process of the tobacco product which is not heated and is not combusted, the release of the flavor substances is caused, especially the release of the additional flavor substances with strong volatility is not uniform, the additional flavor substances are usually volatilized completely at the first mouth and the second mouth, the smoking taste is difficult to keep uniform before and after, and the quality stability and the product taste style are difficult to ensure. Thus, flavor delivery technology remains one of the short boards that have limited the development of products that do not burn tobacco when heated.
At present, some researches are carried out in the aspect of flavor slow-release control technology at home and abroad, and the main methods comprise: (1) adding fragrance precursor, and heating at high temperature or burning for cracking to generate fragrance substance. (2) The microcapsules are added. The coating of the essence is realized by coating and other technical means, and the essence are released by the rupture or degradation of the capsule wall. (3) Adding an adsorbent, and adsorbing the essence and the spice by utilizing the porous structure of the adsorbent.
However, the above-described flavor-release method is not suitable for heating a non-combustible tobacco product. The heating temperature is generally below 350 ℃, which is far lower than the combustion temperature of the traditional cigarette, so that some aroma precursors cannot be cracked to generate aroma substances, or the aroma substances wrapped in the microcapsule wall materials cannot be released because the cracking temperature of the microcapsule wall materials cannot be reached, or the aroma substances cannot be slowly and uniformly released only depending on the adsorption capacity of the adsorbent.
Chinese patent publication No. CN 102821628A provides a supramolecular complex perfume immobilization and controlled release technology, which utilizes non-covalent bond interaction between supramolecular compounds and flavors to realize controlled release of flavors and fragrances. The patent mainly relates to simple perfume raw materials such as menthol and lemon oil, and does not describe the perfume slow-release effect of essence or perfume base with complex components.
Disclosure of Invention
In order to solve the defects that the aroma of the heating non-combustible tobacco product is not uniformly released and stable product quality and style characteristics are difficult to endow, the invention innovatively provides a polyvinyl alcohol-based aroma slow-release material (also called aroma slow-release material) for heating non-combustible tobacco products, and aims to remarkably improve the aroma slow-release effect of the products, improve the smoking sensory quality and endow the products with stable quality and style characteristics.
The second purpose of the invention is to provide a preparation method of the polyvinyl alcohol-based flavor slow-release material.
The third object of the present invention is to provide a polyvinyl alcohol-based flavor-releasing composite sheet (also referred to as a composite sheet for short) comprising the polyvinyl alcohol-based flavor-releasing material.
The fourth purpose of the invention is to provide a preparation method of the composite sheet.
The fifth purpose of the invention is to provide an application method of the polyvinyl alcohol-based flavor slow-release material and/or the composite sheet added to the heating end of a heating non-combustible tobacco product.
A sixth object of the present invention is to provide a tobacco rod having a flavor-releasing function for heating a nonflammable tobacco product.
The seventh object of the present invention is to provide a tobacco product which does not burn upon heating and which is compounded with the tobacco rod having a flavor-releasing function.
A polyvinyl alcohol base fragrance slow-release material for heating non-combustible tobacco products comprises a polyvinyl alcohol base material and a tobacco fragrance material compounded in the polyvinyl alcohol base material.
The invention innovatively discovers that the polyvinyl alcohol is used as a base material (carrier) and the cigarette flavor materials are embedded, dispersed and inlaid in the base material, and the composite material is applied to the tobacco product which is not burnt during heating, so that the technical problems of quick flavor release, insufficient flavor of the last few mouths during smoking and the like in the flavoring technology of the tobacco product which is not burnt during heating can be solved, the cigarette flavor materials are slowly and uniformly released in the heating range of 100-250 ℃, the sensory quality of the tobacco which is not burnt during heating is improved, and the style characteristics of the tobacco are endowed.
Preferably, the polymerization degree of the polyvinyl alcohol is in the range of 200-2600, and the alcoholysis degree is less than 88%.
The preferred type is 1788, and the preferred polyvinyl alcohol is easily dissolved in water at normal temperature.
In the polyvinyl alcohol-based flavor slow-release composite material, the mass percentage of polyvinyl alcohol is 20-70%.
Preferably, the flavor material for the cigarette is at least one of monomer synthetic flavor, natural flavor raw material, essence base or essence.
The technical method is particularly suitable for volatile or semi-volatile additional fragrant substances, especially strong volatile fragrant substances. For example, it is particularly suitable for low-grade ester flavoring substances with volatilization temperature below 200 ℃. In addition, the method is also particularly suitable for cigarette flavor materials with complex components, such as cigarette surface flavor essence.
Preferably, the tobacco flavor material can be a characteristic flavor which is added into a non-combustion tobacco product by heating and is separately emphasized or highlighted, such as furanone, menthol, ethyl maltol and the like; further preferably, the tobacco flavoring essence and the surface essence containing the characteristic fragrance note can be used.
Preferably, the mass percentage content of the flavor material for the cigarette is less than or equal to 40 percent, and the further preferred proportion is less than or equal to 35 percent (based on the mass of the polyvinyl alcohol-based flavor slow-release material).
Preferably, the polyvinyl alcohol-based flavor slow-release material is also compounded with an adsorbent and/or a filling material. In the polyvinyl alcohol base fragrance slow-release material, the adsorbent and/or the filling material are embedded, dispersed or embedded in the polyvinyl alcohol base material. Researches show that the adsorbent and/or the filling material can adsorb, disperse and load the flavor materials for cigarettes, modify the polyvinyl alcohol-based flavor slow-release material and adjust the properties of the polyvinyl alcohol-based flavor slow-release material such as hardness, density, strength and the like.
According to the invention, the adsorbent and/or the filling material are/is added into the polyvinyl alcohol base material, and the flavor slow-release effect of the flavor material in the heating non-combustion tobacco product can be unexpectedly improved by utilizing the embedding effect of the polyvinyl alcohol.
Preferably, the cigarette flavor material is adsorbed in the adsorbent and/or the filling material.
Preferably, the adsorbent is one or more of activated carbon, diatomite, molecular sieve and cyclodextrin.
Preferably, the mass percentage of the adsorbent in the polyvinyl alcohol-based flavor slow-release material is not higher than 40 wt.%.
Preferably, the filling material is one or more of tobacco powder, starch and vegetable gum.
Preferably, the vegetable gum is at least one of guar gum, carrageenan and fenugreek gum.
Preferably, the filling material accounts for not more than 40 wt% of the polyvinyl alcohol-based flavor slow-release material.
Preferably, the polyvinyl alcohol-based flavor release material has a layered structure.
The invention also innovatively provides a preparation method of the polyvinyl alcohol-based flavor slow-release composite material, wherein the polyvinyl alcohol and the flavor materials for cigarettes are dissolved by using a solvent to obtain a raw material solution, and then the solvent is removed to obtain the polyvinyl alcohol-based flavor slow-release material.
Preferably, the raw material solution further comprises an adsorbent and/or a filler.
Preferably, the polyvinyl alcohol and the flavor materials for cigarettes are dissolved by a solvent to obtain a viscous liquid or dough-like substance, and the viscous liquid or dough-like substance is uniformly stirred and coated into a sheet shape or made into a noodle shape to obtain the polyvinyl alcohol-based flavor slow-release material.
The preferred preparation method comprises the following steps: dissolving polyvinyl alcohol by using a solvent, adding an essence perfume (a cigarette flavor material), selectively adding an adsorbent and/or a filling material, fully stirring to uniformly disperse the essence perfume to form a viscous polyvinyl alcohol solution or a dough-like material, then preparing into a sheet or a noodle by using a coating method, removing the solvent, cutting into threads, sheets or granules, and mixing the threads, sheets or granules with a tobacco material end (a heating end) of a tobacco product which is not combusted by heating, so that the essence perfume is slowly and uniformly released in a heating range of 100 ℃ and 250 ℃.
In the present invention, the solvent is a solvent capable of dissolving polyvinyl alcohol, and water is preferred.
In the invention, the polyvinyl alcohol solution (raw material solution) can be subjected to standing, ultrasonic vibration or defoaming agent adding to remove bubbles.
In the invention, the method for removing the solvent can be room temperature volatilization, hot air drying at 30-50 ℃, low-temperature evaporation or freeze drying.
The invention also provides a polyvinyl alcohol-based flavor slow-release composite sheet for heating a non-combustible tobacco product, which comprises the polyvinyl alcohol-based flavor slow-release material layer and a polyvinyl alcohol layer compounded on the surface of the polyvinyl alcohol-based flavor slow-release material layer.
The invention innovatively discovers that compared with the polyvinyl alcohol-based flavor slow-release material, the composite sheet formed by compounding the polyvinyl alcohol-based flavor slow-release material and polyvinyl alcohol has better flavor slow-release effect and more uniform flavor release.
Preferably, the polyvinyl alcohol-based flavor slow-release composite sheet is a double-layer composite sheet formed by compounding a polyvinyl alcohol layer and a polyvinyl alcohol-based flavor slow-release material layer. Namely, the polyvinyl alcohol layer is compounded on one plane of the polyvinyl alcohol-based fragrance slow-release material layer.
Preferably, the polyvinyl alcohol-based fragrance slow-release composite sheet is a three-layer sandwich composite sheet which sequentially comprises a polyvinyl alcohol layer, a polyvinyl alcohol-based fragrance slow-release material layer and a polyvinyl alcohol layer. Namely, the polyvinyl alcohol layer is compounded on the upper plane and the lower plane of the polyvinyl alcohol-based fragrance slow-release material layer.
Preferably, the polyvinyl alcohol-based flavor slow-release composite sheet is a multilayer composite sheet with four or more layers, wherein the polyvinyl alcohol layer and the polyvinyl alcohol-based flavor slow-release material layer are sequentially compounded.
To be suitable for use, the polyvinyl alcohol-based flavor-extending material may be cut into various shapes for application to heated non-combustible smoking articles, including but not limited to strands, tablets, granules.
The invention also provides a preparation method of the polyvinyl alcohol-based fragrance slow-release composite sheet, which comprises the steps of preparing a raw material solution and a polyvinyl alcohol solution, sequentially coating the solutions according to the structure of the composite sheet, and removing the solvent to obtain the polyvinyl alcohol-based fragrance slow-release composite sheet.
For example, polyvinyl alcohol is dissolved by a solvent, the solvent is removed to form a polyvinyl alcohol layer, then a raw material solution is prepared according to the preparation method of the fragrance sustained-release material, the raw material solution is compounded on the polyvinyl alcohol layer, and the solvent is removed to obtain the polyvinyl alcohol-based fragrance sustained-release composite sheet. And repeating the steps according to the composite sheet structure to obtain the required composite sheet.
The invention also provides an application of the polyvinyl alcohol-based flavor slow-release material and/or the polyvinyl alcohol-based flavor slow-release composite sheet, which is used for preparing a tobacco rod of a heating non-combustible tobacco product.
The tobacco rod is the portion that heats the heated end of the nonflammable tobacco product and produces the tobacco aroma. According to the application, the polyvinyl alcohol-based flavor slow-release material and/or the composite sheet are/is added to a tobacco rod (a tobacco material end, namely a heating end) of the heating non-combustible tobacco product, so that the flavor of the heating non-combustible tobacco product is slowly released. The flavor slow-release method for the tobacco products which are not burnt by heating and use polyvinyl alcohol as the base material to fix the flavors and fragrances is applied to the tobacco products which are not burnt by heating, and has good effects of improving the flavor quality of the products and endowing style characteristics.
Preferably, the application is to mix at least one of the polyvinyl alcohol-based flavor slow-release material and the polyvinyl alcohol-based flavor slow-release composite sheet with tobacco materials (such as cut tobacco) to prepare a unit tobacco rod.
The application of the invention directly contacts and compounds the flavor slow-release material, the flavor slow-release composite sheet and the tobacco material, thus further improving the flavor slow-release effect.
In the application process, the flavor slow-release material and the flavor slow-release composite sheet can be cut into any shape and then compounded with tobacco materials to form the tobacco rod.
Preferably, at least one of the polyvinyl alcohol-based flavor-releasing material and the polyvinyl alcohol-based flavor-releasing composite sheet is made into a thread shape, and is mixed with a tobacco material (such as cut tobacco) and rolled into a cigarette-shaped heating non-combustion tobacco product.
The invention also provides a tobacco rod of a heating non-combustion tobacco product with a fragrance slow-release function, which comprises tobacco materials and at least one of the polyvinyl alcohol fragrance slow-release material and the polyvinyl alcohol fragrance slow-release composite sheet.
The tobacco rod is a unit rod or a binary and multi-element composite rod.
The tobacco rod is characterized in that the addition percentage of at least one of the polyvinyl alcohol-based flavor slow-release material and the polyvinyl alcohol-based flavor slow-release composite sheet is 1-10%.
The invention also provides a heating non-combustible tobacco product with a fragrance slow-release function, which comprises a filter stick and the tobacco stick which are connected in a tipping mode.
Has the advantages that:
1. the preparation method of the fragrance slow-release sheet is simple, and the application forms of the fragrance slow-release sheet in heating ends of heating non-combustible tobacco products are various. The polyvinyl alcohol is used as a nontoxic biodegradable covering material, can prevent the essence and the spice from naturally volatilizing at normal temperature, and is convenient to store and transport; the suction process can be gradually softened along with the rise of the temperature, and the released water vapor can gradually dissolve the essence so as to slowly and uniformly release the essence and the spice.
2. The invention is not only suitable for simple fragrant raw materials, but also has the most outstanding advantages that the invention can be suitable for essence and fragrant base with complex components, can well improve the richness of the fragrance of the smoke of the heating non-combustible tobacco product, improve the quality stability of the heating non-combustible tobacco product and lay the technical foundation of endowing the product with style characteristics by using the essence and the spice.
Drawings
Fig. 1 is a TG curve of fragrance a of example 1.
FIG. 2 is a TG curve of the polyvinyl alcohol sheet of example 1.
FIG. 3 is a TG curve of the polyvinyl alcohol fragrance-releasing sheet of example 1.
FIG. 4 is a TG curve of the polyvinyl alcohol fragrance-sustained release sheet of example 1 at a constant temperature of 200 ℃.
The specific implementation scheme is as follows:
the invention is further described with reference to specific examples. The following examples are intended to illustrate the invention without further limiting it.
The invention is further described with reference to specific examples. The following examples are intended to illustrate the invention without further limiting it.
Example 1
The essence A is a common conventional cigarette essence, and is applied to a heating non-combustible tobacco product, wherein the contained fragrance components mainly comprise ethyl acetate, ethyl butyrate, 2-methyl ethyl butyrate, ethyl isovalerate, furfural, hexyl hexanoate, 3-methyl-pyrazine, 2-ethyl-3-methyl pyrazine, benzaldehyde, acetophenone, megastigmatrienone, geranyl acetone, β -damascenone, menthol, methyl phenylacetate, a tobacco extract, a fig extract, an apple extract, a jujube extract, a vanilla bean tincture, benzoin cream, a liquorice fluid extract and the like.
In order to promote the essence A to be slowly and uniformly released in the heating stage, the scheme takes polyvinyl alcohol as a slow release carrier to fix the essence A and applies the polyvinyl alcohol to the heating end of a heating non-combustible tobacco product. The specific implementation method comprises the following steps: weighing 2g of polyvinyl alcohol (pharmaceutical grade, 1788 type), and adding about 20ml of water to completely dissolve the polyvinyl alcohol; adding 2g of essence A, and fully stirring to uniformly disperse the essence A in the solution; standing for 15min, coating the liquid on a flat plate after bubbles are eliminated, removing solvent by room temperature volatilization method, making into 0.5mm thick sheet, cutting into filaments with length of about 20mm, and blending into tobacco material of thin cigarette-shaped heating non-burning tobacco product at a ratio of 2%.
Fig. 2 is a thermogravimetric curve of the polyvinyl alcohol sheet, and analysis shows that the polyvinyl alcohol sheet has stable quality below 250 ℃, only a small amount of solvent is volatilized, and the weight loss is rapid from 280 ℃. FIG. 3 is a thermogravimetric curve of a polyvinyl alcohol fragrance sustained-release sheet loaded with essence A, wherein the sheet can achieve a good sustained-release effect at a programmed temperature of 100-250 ℃, the weight loss rate can reach more than 35%, and the main temperature range of essence volatilization is between 100-250 ℃; FIG. 4 is a constant temperature thermogravimetric curve of the polyvinyl alcohol fragrance sustained-release sheet at 200 ℃, the temperature rises to 200 ℃ and starts to be in a constant temperature state at 1.5min, the sheet has a slow and uniform weight loss tendency, the weight loss rate is about 18%, and the time for releasing fragrance by continuous weight loss reaches more than 20 min.
The smoking test result of the tobacco product which is not burnt by heating shows that after the sheet is added into the tobacco product which is not burnt by heating, the fragrance is better in uniformity of releasing by mouth, and can be released uniformly by seven or more than eight mouths continuously, which is consistent with the simulation test result of an instrument. Meanwhile, researches show that the higher the content of the fragrant materials, the more the fragrance materials are dissociated, the more the loss in the processing process is, and the lower the utilization efficiency is. The aroma characteristics are prominent when the addition amount of the aroma materials is large. The specific addition ratio depends on the application, and when the other fragrances are modified, the ratio may be less than 1% or even lower.
In conclusion, the invention is suitable for the formula of the essence and the spice with complex fragrance components, compared with the direct injection perfuming, the polyvinyl alcohol fragrance slow-release sheet added can achieve the effect of slow and uniform weight loss at the temperature of 100-250 ℃, and meets the requirement of heating slow release of a non-combustible tobacco product.
Example 2
In another optimized embodiment, the flavor slow-release sheet is prepared by adding polyvinyl alcohol solution after the flavor and the fragrance are adsorbed by the adsorbent and is applied to the heating end of a non-burning tobacco product, and the specific steps are as follows: sieving the activated diatomite with a 40-mesh sieve, drying in an oven at 500 ℃ for 12h, and cooling at room temperature for later use; mixing the essence A and 40-mesh diatomite according to a ratio of 1: 1, uniformly stirring, and then placing in a room temperature environment for balancing for 0.5 h; dissolving equivalent polyvinyl alcohol (pharmaceutical grade, 1788 type) with 10 times of water, adding into the above system, and stirring thoroughly until the absorbing material and essence are uniformly dispersed in polyvinyl alcohol liquid; uniformly coating the liquid on a flat plate, and removing the solvent by adopting a hot air drying method at 30 ℃ to prepare a slow-release sheet; it is cut into filaments of about 20mm in length and incorporated at a rate of 2% into tobacco material of a fine-cut cigarette-shaped heated non-combustible tobacco product.
The smoke panel test result and the thermogravimetric analysis result show that the polyvinyl alcohol slow-release sheet containing the adsorbent can achieve the effect of slow and uniform weight loss at the temperature of 100-250 ℃, the mouth-to-mouth release uniformity of the essence and the spice is better, the sustained release time reaches more than 25min, the weight loss rate is 13% within 15min, and the requirement of heating slow release of the non-combustible tobacco product is met.
Example 3
According to the method of the embodiment 2, the adsorbent is replaced by an H β -molecular sieve, the essence B is used as a slow-release essence, and the essence B mainly comprises ethyl acetate, ethyl propionate, ethyl butyrate, ethyl isovalerate, ethyl caproate, furfural, 3-methylpyrazine, amyl valerate, benzyl alcohol, ethyl caprylate, benzyl acetate, ethyl caprate, megastigmatrienone, β -damascenone, geranylacetone, clary sage oil, lemon oil, a tobacco extract, a cocoa extract, vanilla bean tincture, iris extractum, liquorice fluid extract and the like.
Example 4
According to the method of the embodiment 3, the adsorbent is replaced by cyclodextrin, and the prepared flavor slow-release sheet is shredded and then blended into the tobacco material of the heating non-combustible tobacco product, so that the flavor slow-release sheet has good slow-release effect, the flavor and the fragrance can be slowly and uniformly released at the temperature of 100-250 ℃, the sustained release time reaches more than 25min, and the weight loss rate within 15min is 12%.
Example 5
In another optimized scheme, the slow-release sheet has a double-layer structure, the first layer is a polyvinyl alcohol sheet, the second layer is a slow-release sheet added with activated carbon, and the specific implementation steps are as follows:
1. weighing polyvinyl alcohol (pharmaceutical grade, 2088 type), dissolving in water to obtain polyvinyl alcohol solution, removing bubbles by ultrasonic vibration, coating on a flat plate, and removing solvent by hot air drying at 40 deg.C to obtain polyvinyl alcohol sheet;
2. uniformly mixing 1g of essence B and 1g of 150-mesh active carbon, then placing the mixture in a room temperature environment for balancing for 0.5h, then adding 1g of polyvinyl alcohol solution, fully stirring to uniformly disperse the mixture, then coating the mixture on the polyvinyl alcohol sheet formed in the step 1, and removing the solvent by adopting a hot air drying method at 40 ℃ in the same way to form the slow-release sheet with the double-layer structure.
3. The double-layer structure slow-release agent is cut into pieces with the width of about 2mm, and the pieces are blended into tobacco materials of a tobacco product which is not burnt when being heated in a proportion of 3%.
The test result shows that the polyvinyl alcohol slow release sheet with the double-layer structure can obviously improve the mouth-to-mouth release uniformity of the essence and the spice in the heating non-combustible tobacco product, the release uniformity is further improved on the basis of the example 2, the essence and the spice are slowly and uniformly released at the temperature of 100-250 ℃, the weight loss rate within 15min is 10%, and the sustained release time in the heating non-combustible tobacco product can reach more than nine mouths.
Example 6
On the surface of the sustained-release composite material with the double-layer structure formed in example 5, the method of example 5 is adopted, and then the composite material with the double-layer structure is compounded, that is, the sustained-release composite material with the four-layer structure in which the polyvinyl alcohol and the composite material are alternately distributed (sequentially compounded) is formed. The result shows that the slow release effect of the structural composite material is further improved on the basis of the embodiment 5, the weight loss rate is about 8% within 15min, and the sustained release time can reach more than nine mouths.
Example 7
In another embodiment, the tobacco powder is added as a filling material, and the specific implementation method is as follows: weighing 4g of polyvinyl alcohol (pharmaceutical grade, 2088 type), and adding water to prepare a 10% polyvinyl alcohol solution; adding 2g of essence B and 1g of tobacco powder, fully stirring to uniformly disperse the essence B and the tobacco powder, removing the solvent by adopting a room-temperature volatilization method, drying, and blending the mixture into tobacco materials of tobacco products which are not burnt by heating according to the proportion of 3 percent after shredding.
The test result shows that the tobacco powder is added to enhance the tobacco fragrance of the heating non-combustible tobacco product, and the characteristics of tensile strength, hardness and the like of the slow-release sheet can be adjusted, so that the tobacco product can be conveniently rolled, the essence and the spice at the heating end can slowly and uniformly lose weight at the temperature of 100-250 ℃, the sustained release time reaches more than 25min, the weight loss rate is 11% within 15min, and the requirement of heating the heating non-combustible tobacco product for slow release is met.
Example 8
According to the method of the embodiment 7, the filling material is replaced by the porous starch, the prepared flavor slow-release sheet is applied to the heating end of the non-burning tobacco product, the slow-release effect is good, the flavor and the fragrance at the heating end can be slowly and uniformly released at the temperature of 100 ℃ and 250 ℃, the sustained release time is more than 25min, and the weight loss rate is 10% within 15 min.
Example 9
Following the procedure of example 7, the filler material was replaced with guar gum and the resulting flavor-releasing sheet was applied to the heated end of a heated non-combustible smoking article. The test result shows that the addition of the guar gum is beneficial to increasing the viscosity of the solution, and the characteristics of the slow-release material such as tensile strength, hardness and the like can be adjusted, the prepared slow-release sheet also has good slow-release effect, the essence and the spice at the heating end can be slowly and uniformly released at the temperature of 100 ℃ and 250 ℃, the sustained release time reaches more than 25min, and the weight loss rate within 15min is 10%.
Example 10
According to the method of the embodiment 2, the concentrated tea aroma essence, the adsorbent diatomite and the polyvinyl alcohol are compounded according to the proportion of 1: 1, the mixture is made into a flaky slow-release composite material and then is shredded, the flaky slow-release composite material is mixed with tobacco materials according to the proportion of 10% to be made into cigarettes, and sensory evaluation tests are carried out, so that the product shows very thick and outstanding tea aroma characteristics, and can continuously and uniformly release more than ten mouthpieces; when the adding proportion of the composite material is reduced to 1 percent, the light tea fragrance is shown, and seven or eight mouths can be released continuously and uniformly. Therefore, the adding proportion of the composite material is determined according to the actual application condition, and when the fragrance of certain characteristic essence is weak or important points need to be highlighted, the adding proportion of the composite material can be increased; when the aroma characteristics of certain essences are obvious or the emphasis on the aroma characteristics is not required to be obvious, the adding proportion of the composite material can be properly reduced.
Through comparison between the example 1 and the examples 2-5, the adsorbent with the porous structure is added, so that the adsorption and fixation effects on the essence and the spice can be enhanced, and the essence release time is prolonged; compared with the examples 5-6, the composite material with the multilayer structure has better slow release effect and more uniform fragrance release compared with a single layer; compared with the examples 7-9, the filler material, especially the tobacco powder, added in the example 2 is found to enhance the tobacco fragrance of the product, and is also helpful to adjust the characteristics of the composite material, such as tensile strength, hardness and the like, so that the composite material can be more easily and uniformly mixed with the tobacco material and rolled into cigarettes.
Claims (26)
1. A polyvinyl alcohol-based flavor slow-release material for heating non-combustible tobacco products is characterized by comprising a polyvinyl alcohol base material and a tobacco flavor material compounded in the polyvinyl alcohol base material.
2. The polyvinyl alcohol-based flavor release material as claimed in claim 1, wherein the polyvinyl alcohol has a degree of polymerization in the range of 200-2600% and a degree of alcoholysis less than 88%.
3. The polyvinyl alcohol-based flavor sustained-release material according to claim 2, wherein the polyvinyl alcohol is 20 to 70% by mass.
4. The polyvinyl alcohol-based flavor slow-release material as claimed in claim 1, wherein the flavor material for tobacco is at least one of monomer synthetic flavor, natural flavor raw material, flavor base or essence.
5. The polyvinyl alcohol-based flavor sustained-release material as claimed in claim 4, wherein the mass percentage of the flavor material for cigarettes is less than or equal to 40%.
6. The polyvinyl alcohol-based flavor release material according to claim 1, wherein an adsorbent and/or a filler is further compounded in the polyvinyl alcohol-based flavor release material.
7. The polyvinyl alcohol-based flavor slow-release material as claimed in claim 6, wherein the adsorbent is one or more of activated carbon, diatomite, molecular sieve and cyclodextrin.
8. The polyvinyl alcohol-based flavor release material according to claim 6, wherein the adsorbent accounts for not more than 40 wt.% of the polyvinyl alcohol-based flavor release material.
9. The polyvinyl alcohol based flavor release material according to claim 6, wherein the filling material is one or more of tobacco powder, starch and vegetable gum.
10. The polyvinyl alcohol-based flavor release material according to claim 9, wherein the vegetable gum is at least one of guar gum, carrageenan and fenugreek gum.
11. The polyvinyl alcohol-based flavor release material according to claim 6, wherein the filling material accounts for not more than 40 wt.% of the polyvinyl alcohol-based flavor release material.
12. A preparation method of the polyvinyl alcohol-based flavor slow-release material as claimed in claims 1 to 11, characterized by dissolving polyvinyl alcohol and flavor materials for cigarettes with a solvent to obtain a raw material solution, and then removing the solvent to obtain the polyvinyl alcohol-based flavor slow-release composite material.
13. The method according to claim 12, wherein the raw material solution further contains an adsorbent and/or a filler.
14. The method of any one of claims 12-13, wherein the solvent is water.
15. A polyvinyl alcohol-based flavor-sustained release composite sheet for a tobacco product which does not burn when heated, comprising the polyvinyl alcohol-based flavor-sustained release material layer according to any one of claims 1 to 11 and a polyvinyl alcohol layer compounded on the surface thereof.
16. The polyvinyl alcohol-based flavor release composite sheet according to claim 15, which is a double-layer composite sheet in which a polyvinyl alcohol layer and a polyvinyl alcohol-based flavor release material layer are compounded.
17. The polyvinyl alcohol-based flavor sustained-release composite sheet according to claim 15, which is a three-layer sandwich composite sheet comprising a polyvinyl alcohol layer, a polyvinyl alcohol-based flavor sustained-release material layer and a polyvinyl alcohol layer in this order.
18. The polyvinyl alcohol-based flavor sustained-release composite sheet according to claim 15, which is a multilayer composite sheet comprising four or more layers of a polyvinyl alcohol layer and a polyvinyl alcohol-based flavor sustained-release material layer which are sequentially laminated.
19. The method for preparing a polyvinyl alcohol-based flavor slow-release composite sheet according to any one of claims 15 to 18, wherein a raw material solution and a polyvinyl alcohol solution are prepared, and the polyvinyl alcohol-based flavor slow-release composite sheet is obtained by sequentially coating the solution and removing the solvent according to the structure of the composite sheet.
20. Use of a polyvinyl alcohol-based flavor-releasing material according to any one of claims 1 to 11 and/or a polyvinyl alcohol-based flavor-releasing composite sheet according to any one of claims 15 to 18 for producing a tobacco rod for a tobacco product that does not burn when heated.
21. The use of claim 20, wherein at least one of the polyvinyl alcohol based flavour release material and the polyvinyl alcohol based flavour release composite sheet is mixed with tobacco material to produce a unitary tobacco rod.
22. The use of claim 21, wherein at least one of the polyvinyl alcohol-based flavor-releasing material, the polyvinyl alcohol-based flavor-releasing composite sheet is formed into a thread form, and is mixed with tobacco shreds and rolled into a heated non-combustible tobacco product in the form of a cigarette.
23. A tobacco rod of a heating non-combustion tobacco product with a flavor slow-release function, which is characterized by comprising a tobacco material and at least one of the polyvinyl alcohol flavor slow-release material according to any one of claims 1 to 11 and the polyvinyl alcohol-based flavor slow-release composite sheet according to any one of claims 15 to 18.
24. A tobacco rod for a non-combustible smoking article having a flavor-releasing function, according to claim 23, wherein said tobacco rod is a unit rod or a composite rod of two or more units.
25. A tobacco rod according to any one of claims 23 or 24 wherein at least one of the polyvinyl alcohol based flavour release material and the polyvinyl alcohol based flavour release composite sheet is added in an amount of 1-10% by weight.
26. A heated non-combustible smoking article having a flavour release function, comprising a tipping filter rod and a tobacco rod according to any one of claims 23 to 25.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811256032.2A CN111184247B (en) | 2018-10-25 | 2018-10-25 | Polyvinyl alcohol-based fragrance slow-release material, composite sheet, preparation method of composite sheet and application of composite sheet in heating non-combustible tobacco products |
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| CN201811256032.2A CN111184247B (en) | 2018-10-25 | 2018-10-25 | Polyvinyl alcohol-based fragrance slow-release material, composite sheet, preparation method of composite sheet and application of composite sheet in heating non-combustible tobacco products |
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| CN111184247A true CN111184247A (en) | 2020-05-22 |
| CN111184247B CN111184247B (en) | 2022-08-16 |
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| CN201811256032.2A Active CN111184247B (en) | 2018-10-25 | 2018-10-25 | Polyvinyl alcohol-based fragrance slow-release material, composite sheet, preparation method of composite sheet and application of composite sheet in heating non-combustible tobacco products |
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| CN111184247B (en) | 2022-08-16 |
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