Method for manufacturing a fragrance sheet for aerosol generating articles

Abstract

The present invention relates to a method for manufacturing a fragrance sheet for an aerosol-generating article, which includes step S1 of preparing an immersion solution by immersing natural fragrance raw materials in a plasticizer, step S2 of preparing a liquid by mixing a hydrocolloid with the immersion solution, and step S3 of casting and drying the liquid to produce a sheet.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a fragrance sheet for aerosol generating articles. to

Background Art

[0002] In order to meet the preferences of users, aerosol generating articles are perfumed in various ways. As an example of a typical perfuming method, a perfume liquid is directly added (for example, sprayed) to an aerosol generating substance such as shredded tobacco or a filter plug (see Patent Document 1).

[0003] However, since fragrances have volatile properties and the fragrance is lost during the distribution and consumption period of aerosol generating articles, there is a problem that the taste of tobacco continuously deteriorates. On the other hand, naturally derived fragrances are more natural and have excellent flavors compared to fragrances made from combinations of chemical fragrance substances, so users who like scents tend to prefer them more. Naturally derived fragrances are extracted from natural products by methods such as vacuum steam distillation and solvent extraction, and then applied to aerosol generating articles. However, applying them to aerosol generating articles through such methods has a complicated process, and since the extraction method includes a concentration step and the like, the scent can change while going through a separate extraction process.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] ​The present invention aims to provide a method for manufacturing fragrance sheets for aerosol-generating articles that is easy to perform, produces a fragrance close to that of natural materials, and enhances the retention and persistence of the fragrance, in order to solve the above-mentioned problems.

[0006] However, the problems that this invention aims to solve are not limited to those mentioned above, and any further problems not mentioned can be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0007] According to one embodiment of the present invention, step S1 is to prepare an immersion solution by immersing natural fragrance raw materials in a plasticizer, Step S2 involves mixing hydrocolloid into the aforementioned immersion solution to prepare the solution, The present invention provides a method for producing a fragrance sheet for an aerosol generating article, comprising step S3, which involves casting and drying the aforementioned prepared liquid to produce a sheet.

[0008] According to another embodiment of the present invention, a fragrance sheet for an aerosol generating article manufactured by a manufacturing method according to one embodiment of the present invention, Contains naturally derived fragrance ingredients, plasticizers, and hydrocolloids. The aforementioned naturally derived fragrance raw material is in powder form, and the invention provides a fragrance sheet for aerosol generating articles. [Effects of the Invention]

[0009] By utilizing the method for producing fragrance sheets for aerosol-generating articles of the present invention, the process can be simplified by immediately producing the sheets without a separate step for extracting the fragrance, and since expensive raw materials required for fragrance extraction are not used, the fragrance can be produced in a more economical way, and the ease of liquid preparation and production of fragrance sheets can be easily achieved.

[0010] The fragrance sheets for aerosol-generating articles produced by the manufacturing method of the present invention do not involve a concentration process via heating during fragrance extraction, thus achieving a fragrance that closely resembles natural fragrances, and exhibiting excellent fragrance retention and persistence.

[0011] The effects of the present invention should be understood to include all effects that can be inferred from the detailed description or claims of the invention, without being limited to the effects described above. [Brief explanation of the drawing]

[0012] [Figure 1] This is a flowchart of a method for manufacturing a fragrance sheet according to one embodiment of the present invention. [Modes for carrying out the invention]

[0013] The embodiments will be described in detail below with reference to the attached drawings. However, various modifications may be made to the embodiments, and the scope of the patent application will not be limited or restricted by such embodiments. All modifications, equivalents, or substitutes to the embodiments should be understood to be included within the scope of the patent.

[0014] The terms used in the embodiments are for illustrative purposes only and should not be construed as limiting. Singular expressions include plural expressions unless, in context, they have a clearly different meaning. In this specification, terms such as “includes” or “has” indicate the presence of features, figures, steps, actions, components, parts, or combinations thereof described in the specification, and should not be understood as preemptively excluding the possibility of the presence or addition of one or more other features, figures, steps, actions, components, parts, or combinations thereof.

[0015] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as those generally understood by a person of ordinary skill in the art to which this embodiment belongs. Commonly used, predefined terms should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not as ideal or overly formal unless expressly defined herein.

[0016] Furthermore, when explaining with reference to the attached drawings, the same components will be assigned the same reference numerals regardless of the reference numerals used in the drawings, and redundant explanations will be omitted. In the description of embodiments, if a specific explanation of related prior art is deemed to unnecessarily obscure the gist of the embodiment, such detailed explanation will be omitted.

[0017] Furthermore, in describing the components in the embodiments, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are used to distinguish a component from other components, and the terms do not limit the nature, order, or sequence of the component.

[0018] Components that have functions common to components included in any of the embodiments will be described using the same name in the other embodiments. Unless otherwise stated, the description given in one embodiment can be applied to the other embodiments, and specific descriptions will be omitted to the extent that they overlap.

[0019] When any part of the specification "includes" any component, this does not exclude other components, but rather means that other components may be further included. Throughout the specification, "aerosol-generating article" means an item capable of generating an aerosol. The aerosol-generating article may contain an aerosol-generating substance or an aerosol-forming substrate. Further, the aerosol-generating article is a solid substance based on tobacco raw materials such as sheet tobacco, cut tobacco, and reconstituted tobacco, but may contain non-tobacco substances or both of them. The aerosol-generating substance may contain volatile compounds.

[0020] Also, throughout the specification, "upstream" or "upstream direction" means a direction away from the mouth of the user using the aerosol-generating article, and "downstream" or "downstream direction" means a direction approaching the mouth of the user using the aerosol-generating article. [[ID=……]]

[0021] Throughout the specification, "flavor sheet" means a flavor-containing material manufactured in sheet form. According to an embodiment of the present invention, a method for manufacturing a flavor sheet for an aerosol-generating article can be provided. The method for manufacturing a flavor sheet for an aerosol-generating article includes a step S1 of immersing a natural fragrance raw material in a plasticizer to prepare an immersion solution, a step S2 of mixing a hydrocolloid in the immersion solution to prepare a formulated solution, and a step S3 of casting and drying the formulated solution to manufacture a sheet (Figure 1).

[0022] Hereinafter, each step will be specifically described. Step S1 is a step of preparing an immersion solution, and the immersion solution is manufactured by immersing a natural fragrance raw material in a plasticizer. The immersion solution is left at 4 to 40 °C for 12 to 50 hours, preferably for 12 hours.

[0023] When extracting at a temperature higher than the above-described numerical range, the immersion time is shorter, and when extracting at a lower temperature, the immersion time is longer, but the immersion time and temperature can be optimized according to the type and characteristics of the natural product to be extracted. <……>

[0024] The natural fragrance raw material is not limited as long as it is a natural product capable of extracting a natural fragrance. Plasticizers can extract and capture natural fragrances from natural fragrance raw materials. Furthermore, plasticizers are added for the production of sheet-shaped products.

[0025] To perform the roles described above, the content of the plasticizer added in step S1 may be 0.5 to 2 times the content of the natural fragrance raw material. Step S2 is a step of preparing a solution, which can be produced by mixing a hydrocolloid with the immersion solution prepared above and stirring. Specifically, step S2 includes step a1 of preparing a hydrocolloid solution, step a2 of mixing the hydrocolloid solution with the immersion solution to produce a solution, and step a3 of letting the solution stand.

[0026] In step a1, the hydrocolloid is a sheet-forming agent that forms a sheet while also coating and fixing the fragrance. The hydrocolloid is dissolved in a solvent to prepare a hydrocolloid solution. The hydrocolloid solution may further contain a filler, which may be dextrin. Here, the solvent may contain at least one selected from the group consisting of water and alcohol.

[0027] In step a2, the prepared solution can be manufactured by mixing the previously prepared immersion solution and hydrocolloid solution and stirring thoroughly. In step a3, the prepared solution may be left to stand for 20 to 30 hours. During this time, any air bubbles generated during the stirring of the prepared solution are removed.

[0028] The prepared solution may include not only liquids but also a mixture of liquid and solid (for example, a slurry). Here, the content of the immersion solution in the preparation liquid may be 2 to 30% by weight, preferably 10 to 15% by weight. Of this, the content of natural fragrance raw materials may be 1 to 15% by weight, preferably 5 to 10% by weight, relative to the total weight of the preparation liquid. The content of plasticizer may be 1 to 15% by weight, preferably 5 to 10% by weight, relative to the total weight of the preparation liquid. The weight ratio of natural fragrance raw materials to plasticizer may be 2:1 to 1:2.

[0029] On the other hand, the content of the hydrocolloid solution in the prepared solution may be 80 to 97% by weight relative to the total weight of the prepared solution. Of this, the hydrocolloid content may be 5 to 10% by weight relative to the total weight of the prepared solution. By adjusting the content of the immersion solution, the water content is adjusted to 60 to 80% by weight, preferably 65 to 75% by weight, relative to the total weight of the prepared solution. Water is a component for adjusting the viscosity of the prepared solution.

[0030] Step S3 is a step for manufacturing a fragrance sheet. Specifically, step S3 includes step b1 in which the prepared liquid is cast to a certain thickness, and step b2 in which the cast prepared liquid is dried at 60-80°C.

[0031] In step b1, the prepared solution may be cast onto a predetermined substrate, which may be a release film, for example. In step b2, the prepared solution may be dried at 60-70°C, for example.

[0032] According to another embodiment of the present invention, a fragrance sheet for aerosol-generating articles manufactured by the manufacturing method described above can be provided. The manufacturing method for a fragrance sheet for aerosol-generating articles according to one embodiment of the present invention does not include a step of concentrating the fragrance by applying heat during fragrance extraction, so by using the fragrance sheet of the present invention, a fragrance close to that of nature can be achieved.

[0033] Fragrance sheets for aerosol-generating articles may contain natural fragrance ingredients, plasticizers, hydrocolloids, and moisture. Here, the natural fragrance ingredients may be in powder form. If the naturally derived fragrance ingredients are included in powder form, the heating process, which is essential in vacuum distillation and solvent extraction methods, is not performed, thus preserving the unique fragrance of the natural ingredients without alteration. In addition, the powdered fragrance ingredients can be made visible in the final product, providing users with a visually satisfying experience.

[0034] In the fragrance sheet for an aerosol generating article according to one embodiment of the present invention, the natural fragrance raw material is not limited as long as it is a natural product, and may include, for example, at least one selected from the group consisting of menthol, licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, mint oil, caraway, cognac, jasmine, chamomile, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander, and coffee.

[0035] In the fragrance sheet for aerosol-generating articles according to one embodiment of the present invention, the content of the natural fragrance raw material may be 10 to 40% by weight, preferably 13 to 37% by weight, relative to the total weight of the fragrance sheet. If the content of the natural fragrance raw material is less than the above-mentioned numerical range, the intensity of the fragrance will be low and it will be difficult to satisfy the user. On the other hand, if the content of the natural fragrance raw material exceeds the above-mentioned numerical range, the quality of the fragrance sheet for aerosol-generating articles will be reduced because less hydrocolloid and plasticizer will be added.

[0036] In a fragrance sheet for an aerosol-generating article according to one embodiment of the present invention, the plasticizer plays a role in extracting and collecting natural fragrances from natural fragrance raw materials and forming a sheet. The plasticizer may contain at least one selected from the group consisting of medium-chain triglycerides (MCTG), polypropylene glycol (PG), and glycerin. Preferably, it may be a medium-chain triglyceride.

[0037] In a fragrance sheet for an aerosol-generating article according to one embodiment of the present invention, the content of the plasticizer may be 10 to 40% by weight, preferably 13 to 37% by weight, relative to the total weight of the fragrance sheet.

[0038] The plasticizer content may be 0.5 to 2 times the content of the natural fragrance ingredients. If the plasticizer content is below the range mentioned above, the fragrance cannot be adequately captured, resulting in low fragrance intensity after manufacturing the fragrance sheet, a decrease in the manufacturing quality of aerosol-generating products, and reduced flexibility of the sheet, which may cause the fragrance sheet to be easily damaged during the process. On the other hand, if the plasticizer content exceeds the range mentioned above, it becomes difficult to manufacture the product in sheet form.

[0039] In a fragrance sheet for an aerosol generating article according to one embodiment of the present invention, the hydrocolloid may be a substance extracted from a natural substance or a natural polymer substance processed from a substance extracted from a natural substance. For example, the hydrocolloid includes at least one selected from the group consisting of carrageenan, agar, gellan gum, pectin, guar gum, xanthan gum, tamarind gum, psyllium seed gum, xanthan gum, konjac glucomannan, starch, hydroxypropyl methyl cellulose (HPMC), methyl cellulose (MC), ethyl cellulose (EC), and carboxymethyl cellulose (CMC). The starch may include various raw materials and modified starch. Preferably, the hydrocolloid is methyl cellulose.

[0040] In a fragrance sheet for an aerosol generating article according to one embodiment of the present invention, the hydrocolloid content may be 20 to 55% by weight relative to the total weight of the fragrance sheet. If the hydrocolloid content is less than the above range, the sheet will not form properly. On the other hand, if the hydrocolloid content exceeds the above range, the intensity of the fragrance will decrease due to a reduction in the content of natural fragrance raw materials and plasticizers.

[0041] On the other hand, preferably, in order for the fragrance sheet to have appropriate tensile strength, the hydrocolloid content may be 25 to 40% by weight. In a fragrance sheet for an aerosol-generating article according to one embodiment of the present invention, the fragrance sheet for an aerosol-generating article may further contain a filler, the filler may be dextrin as an example.

[0042] In a fragrance sheet for an aerosol generating article according to one embodiment of the present invention, the content of the filler may be 5 to 15% by weight relative to the tungsten weight of the fragrance sheet, preferably 7 to 10% by weight.

[0043] In the fragrance sheet for aerosol-generating articles according to one embodiment of the present invention, "for aerosol-generating articles" means that it is included in at least one selected from the group consisting of a medium part, a filter part, and a wrapper. That is, an aerosol-generating article can be fragranced using the fragrance sheet for aerosol-generating articles according to one embodiment of the present invention. On the other hand, since the method for manufacturing the fragrance sheet includes a step of immersing natural fragrance raw materials in a plasticizer, the retention and persistence of the fragrance are improved compared to when the fragrance liquid is sprayed and used.

[0044] Here, the fragrance sheet for the aerosol generating article can be applied to the aerosol generating article by cutting, folding, or coating. For example, the fragrance sheet may be cut or folded and applied to the medium and / or filter portion of the aerosol generating article. In the case of a wrapper, the fragrance sheet may be manufactured in combination with the wrapping paper, or it may be manufactured via a coating process in which the liquid formulation is cast directly onto the wrapping paper and dried.

[0045] The present invention will be described in more detail below with reference to embodiments, but the present invention is not limited to the embodiments described below. 1. Method for manufacturing fragrance sheets The fragrance sheets of Embodiments 1 to 5 were manufactured by the following method. The components and their contents added when manufacturing the embodiments and comparative examples are shown in Table 1 below. It was not possible to manufacture the sheets without adding a plasticizer.

[0046] (1) Step S1: Preparation of immersion solution 2g of coffee powder was immersed in 2g of medium-chain triglycerides (MCTG), and then left at 25°C for 48 hours to prepare the immersion solution.

[0047] (2) Step S2: Preparation of the solution First, a hydrocolloid solution was prepared by dissolving 8 g of methylcellulose (MC) and 2 g of dextrin in a solvent. The solvent used was a mixture of 70 g of water and 10 g of alcohol.

[0048] The hydrocolloid solution and the immersion solution were mixed and stirred to prepare the solution. The prepared solution was left to stand at 25°C for 24 hours to remove air bubbles. (3) Step S3: Manufacturing of fragrance sheets The aforementioned liquid mixture was cast onto a release film to a certain thickness, and then dried at 60-80°C to produce a fragrance sheet.

[0049] Embodiment 2 The product was manufactured using the same method as in Embodiment 1, except that 5g of coffee powder and 5g of medium-chain triglycerides (MCTG) were added.

[0050] Embodiment 3 The product was manufactured in the same manner as in Embodiment 1, except that 10g of coffee powder, 5g of medium-chain triglycerides (MCTG), and 65g of water were added.

[0051] Embodiment 4 The same method as in Embodiment 1 was used, except that 5g of coffee powder, 10g of medium-chain triglycerides (MCTG), and 65g of water were added.

[0052] Embodiment 5 The product was manufactured in the same manner as in Embodiment 1, except that 10g of coffee powder, 10g of medium-chain triglycerides (MCTG), and 60g of water were added.

[0053] [Table 1]

[0054] 2. Test Example 1: Composition of Fragrance Sheet The components and their contents contained in the fragrance sheets after manufacturing in Embodiments 1 to 5 are shown in Table 2 below.

[0055] [Table 2]

[0056] 3. Test Example 2: Evaluation of Ease of Manufacturing and Sheet Quality During the manufacturing of Embodiments 1 to 5, tests were conducted to comprehensively evaluate the ease of preparing the liquid and the quality of the manufactured fragrance sheets. The evaluation was conducted according to the following three grades, and the results are shown in Table 3.

[0057] ○: Excellent △: Good X: Bad

[0058] [Table 3]

[0059] The fragrance sheets described in the above embodiments and comparative examples all demonstrated excellent ease of preparation for liquid manufacturing. However, in the case of Embodiment 5, the tensile strength of the manufactured fragrance sheet was low, and the quality of the fragrance sheet was evaluated as insufficient.

[0060] 4. Test Example 3: Evaluation of Aroma Retention Sensory evaluation was conducted to confirm the fragrance retention and persistence of Embodiments 1 to 5. The sensory evaluation was performed by assessing the degree to which the user perceived the fragrance during use. Here, the aerosol generating article was manufactured in the form of a non-combustible aerosol generating article in the form of a rolled cigarette by finely cutting a fragrance sheet and heating it with the device. The sensory evaluation was conducted with panelists who had more than 5 years of smoking experience, and involved 12 to 20 evaluation panelists. The evaluation was performed according to the following three grades, and the results are shown in Table 4.

[0061] ○: Excellent △: Good X: Bad

[0062] [Table 4]

[0063] The test results revealed that Embodiment 1 had low fragrance intensity, resulting in reduced fragrance preservation and persistence. The fragrance intensity of Embodiments 2-4, which all excelled in fragrance sheet quality and fragrance retention, was evaluated, and the intensity increased in the order of Embodiment 4 < Embodiment 2 < Embodiment 3. In other words, Embodiment 3, which had the largest amount of coffee powder added, had a slightly higher fragrance intensity compared to Embodiments 2 and 4.

[0064] From the above test examples, it is possible to easily manufacture fragrance sheets in a simple and economical manner by using the manufacturing method of fragrance sheets described in the claims. Furthermore, the fragrance sheets manufactured by this method can achieve a fragrance that is close to that of nature, and have excellent fragrance retention and persistence, thus providing an aerosol generating article that can improve user satisfaction.

[0065] Although embodiments of the present invention have been described in detail above with reference to the drawings, the present invention is not limited to the embodiments described above, and a person with ordinary skill in the art can apply various technical modifications and variations based on the above. For example, the described techniques may be performed in a different order than described, and / or the described systems, structures, devices, circuits, and other components may be combined or assembled in a different manner than described, or substituted or replaced by other components or equivalents, and still achieve appropriate results.

[0066] Therefore, other realizations, other embodiments, and those equivalent to the claims described below also fall within the scope of the claims.

Claims

1. Step S1 involves preparing an immersion solution by immersing natural fragrance raw materials in a plasticizer, Step S2 involves mixing hydrocolloid into the aforementioned immersion solution to prepare the solution, Step S3 involves casting and drying the aforementioned liquid mixture to produce a sheet. Includes, In step S1, the plasticizer extracts and collects natural fragrances from natural fragrance raw materials. The aforementioned plasticizer contains medium-chain fatty acids, and the method for producing a fragrance sheet for aerosol-generating articles.

2. The method for producing a fragrance sheet for an aerosol generating article according to claim 1, wherein in step S1, the immersion solution is left at 4 to 40°C for 12 to 50 hours.

3. Step S2 is the same as step a1, which is to prepare a hydrocolloid solution, Step a2 involves mixing the hydrocolloid solution and the immersion solution to prepare the solution, Step a3 involves letting the prepared solution stand, A method for producing a fragrance sheet for an aerosol generating article according to claim 1, including the method described above.

4. In step S3, the prepared liquid is cast in step b1 to a certain thickness, Step b2 involves drying the cast solution at 60-80°C, A method for producing a fragrance sheet for an aerosol generating article according to claim 1, including the method described above.

5. The method for producing a fragrance sheet for an aerosol generating article according to claim 1, wherein the natural fragrance raw material is in powder form.

6. The method for producing a fragrance sheet for an aerosol generating article according to claim 1, wherein the natural fragrance raw material comprises at least one selected from the group consisting of menthol, licorice, sucrose, fructose syrup, isosweet, cocoa, lavender, cinnamon, cardamom, celery, fenugreek, cascarilla, sandalwood, bergamot, geranium, honey essence, rose oil, vanilla, lemon oil, orange oil, mint oil, caraway, cognac, jasmine, chamomile, cinnamon, ylang-ylang, sage, spearmint, ginger, coriander, and coffee.

7. The method for producing a fragrance sheet for an aerosol generating article according to claim 5, wherein the hydrocolloid is a substance extracted from a natural substance or a natural polymer substance obtained by processing a substance extracted from a natural substance.

8. The method for producing a fragrance sheet for an aerosol generating article according to claim 5, wherein the hydrocolloid comprises at least one selected from the group consisting of carrageenan, agar, gellan gum, pectin, guar gum, xanthan gum, tamarind gum, psyllium seed gum, xanthan gum, konjac glucomannan, starch, hydroxypropyl methylcellulose, methylcellulose, ethylcellulose, and carboxymethylcellulose.

9. The method for producing a fragrance sheet for an aerosol generating article according to claim 5, wherein the content of the natural fragrance raw material is 10 to 40% by weight relative to the total weight of the fragrance sheet.

10. The method for producing a fragrance sheet for an aerosol generating article according to claim 5, wherein the content of the plasticizer is 10 to 40% by weight relative to the total weight of the fragrance sheet.

11. The method for producing a fragrance sheet for an aerosol generating article according to claim 5, wherein the content of the hydrocolloid is 20 to 55% by weight relative to the total weight of the fragrance sheet.

12. The method for producing a fragrance sheet for an aerosol-generating article according to claim 5, wherein "for aerosol-generating articles" means that the fragrance sheet is included in at least one selected from the group consisting of a medium, a filter, and a wrapper.

13. The method for manufacturing a fragrance sheet for an aerosol generating article according to claim 5, wherein the fragrance sheet for an aerosol generating article is applied to the aerosol generating article by cutting, folding, or coating.