Fragrance sheet for aerosol-generating articles and method for manufacturing the same

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 scented sheet for an aerosol-generating article and a method for producing the same. [Background technology]

[0002] To satisfy user preferences, aerosol-generating articles are scented in various ways, including adding (e.g., spraying) liquid aroma directly to an aerosol-generating substance such as tobacco or a filter plug (see Patent Document 1).

[0003] However, since flavorings have volatile properties, the flavorings are lost during the distribution and consumption of the aerosol-generating product, which causes a persistent deterioration in the taste of the tobacco. Meanwhile, naturally derived fragrances tend to be more popular among fragrance lovers because they have a more natural and excellent flavor than fragrances made from a combination of chemical fragrance substances. Naturally derived fragrances are extracted from natural materials using methods such as reduced pressure steam distillation and solvent extraction, and then applied to aerosol-generating products. However, applying them to aerosol-generating products using these methods is a complicated process, and because the extraction method includes a concentration step, the fragrance may change as a result of a separate extraction process. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Korean Patent Publication No. 2010-0116791 Summary of the Invention [Problem to be solved by the invention]

[0005] In order to solve the above problems, the present invention aims to provide a method for manufacturing a scented sheet for an aerosol-generating product that is easy to process, can realize a scent close to natural, and can improve the retention and durability of the scent.

[0006] However, the problems that the present invention aims to solve are not limited to those mentioned above, and further problems not mentioned will 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, the method includes the steps of: immersing natural fragrance raw materials in a plasticizer to prepare an immersion solution; Step S2: preparing a solution by mixing a hydrocolloid into the immersion solution; and step S3 of casting and drying the prepared liquid to produce a sheet.

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

[0009] By using the method for manufacturing a fragrance sheet for an aerosol-generating article of the present invention, the process can be simplified by immediately manufacturing the sheet without a separate step for extracting the fragrance, and since expensive raw materials required for fragrance extraction are not used, fragrance can be manufactured in a more economical manner.The ease of preparation of the liquid makes it possible to easily manufacture fragrance sheets.

[0010] The fragrance sheet for aerosol-generating articles produced by the method of the present invention does not undergo a process of concentration through heating during fragrance extraction, so it can achieve a fragrance that is close to natural and has excellent fragrance retention and long-lasting properties.

[0011] The effects of the present invention are not limited to the effects described above, but should be understood to include all effects that can be inferred from the configuration of the invention described in the detailed description of the present invention or the claims. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a flowchart showing a method for producing a scented sheet according to one embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, various modifications may be made to the embodiments, and the scope of the patent application is not limited or restricted by such embodiments. It should be understood that all modifications, equivalents, or alternatives to the embodiments are included in the scope of the patent application.

[0014] The terms used in the embodiments are merely used for the purpose of explanation and are not to be construed as being limiting. A singular expression includes a plural expression unless the context clearly indicates otherwise. In this specification, the terms "comprise" or "have" indicate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

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

[0016] In addition, in the description with reference to the accompanying drawings, the same components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. In the description of the embodiments, if a detailed description of related known technology is determined to unnecessarily obscure the gist of the embodiments, the detailed description thereof will be omitted.

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

[0018] Components having a common function with components included in one embodiment will be described using the same names in other embodiments. Unless otherwise specified, the description of one embodiment can be applied to other embodiments, and detailed description will be omitted to the extent that it overlaps.

[0019] Throughout the specification, when any part "comprises" any component, this does not exclude other components, but means that it may further include other components. Throughout the specification, the term "aerosol-generating article" refers to anything capable of generating an aerosol. An aerosol-generating article may include an aerosol-generating substance or an aerosol-forming substrate. An aerosol-generating article may also be a solid substance based on tobacco, such as sheet tobacco, cut tobacco, or reconstituted tobacco, or may include non-tobacco materials or all two. An aerosol-generating substance may include a volatile compound.

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

[0021] Throughout the specification, "perfume sheet" means a perfume-containing material manufactured in sheet form. According to one embodiment of the present invention, there is provided a method for manufacturing a scented sheet for an aerosol-generating article, which includes step S1 of preparing a soaking solution by soaking natural scent ingredients in a plasticizer, step S2 of preparing a liquid by mixing a hydrocolloid into the soaking solution, and step S3 of casting and drying the liquid to produce a sheet (FIG. 1).

[0022] Each step will be explained in detail below. Step S1 is a step of preparing a soaking solution, which is prepared by soaking natural fragrance raw materials in a plasticizer, and is left at 4 to 40°C for 12 to 50 hours, preferably 12 hours.

[0023] The steeping time is shorter when the extraction temperature is higher than the above-mentioned range, and longer when the extraction temperature is lower, but the steeping time and temperature can be optimized depending on 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 from which a natural fragrance can be extracted. The plasticizer can extract and capture natural fragrances from natural fragrance raw materials, and is added for the production of sheet forms.

[0025] To perform the above function, 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 liquid preparation, which can be prepared by mixing a hydrocolloid with the soaking 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 soaking solution to prepare a liquid preparation, and step a3 of leaving the liquid preparation.

[0026] In step a1, the hydrocolloid is a sheet-forming agent that coats and fixes the flavoring agent. 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 include at least one selected from the group consisting of water and alcohol.

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

[0028] The prepared liquid may be in a liquid state or may be in a mixed state of liquid and solid (for example, a slurry state). The content of the soaking solution in the prepared solution may be 2 to 30% by weight, preferably 10 to 15% by weight. The content of the natural fragrance raw material may be 1 to 15% by weight, preferably 5 to 10% by weight, based on the total weight of the prepared solution. The content of the plasticizer may be 1 to 15% by weight, preferably 5 to 10% by weight, based on the total weight of the prepared solution. The weight ratio of the natural fragrance raw material to the plasticizer may be 2:1 to 1:2.

[0029] Meanwhile, the content of the hydrocolloid solution in the prepared solution may be 80 to 97% by weight based on the total weight of the prepared solution. Among these, the content of the hydrocolloid may be 5 to 10% by weight based on the total weight of the prepared solution. By adjusting the content of the immersion solution, the content of water is adjusted to 60 to 80% by weight, preferably 65 to 75% by weight based on 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 producing a fragrance sheet, specifically including step b1 of casting the prepared liquid to a certain thickness and step b2 of drying the cast prepared liquid at 60 to 80°C.

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

[0032] According to another embodiment of the present invention, there is provided a scented sheet for an aerosol-generating article manufactured by the manufacturing method described above. The manufacturing method of the scented sheet for an aerosol-generating article according to one embodiment of the present invention does not include a step of concentrating the scent by applying heat during the extraction, so that the scented sheet of the present invention can achieve a scent close to that of nature.

[0033] The perfume sheet for an aerosol-generating article may include a natural perfume ingredient, a plasticizer, a hydrocolloid, and water. Here, the natural fragrance raw material may be in powder form. If the natural fragrance raw material is included in powder form, the inherent fragrance of the natural raw material can be preserved without being altered because the heating process required in vacuum distillation and solvent extraction methods is not performed. Furthermore, the powdered fragrance raw material can be made visible in the final product, providing visual satisfaction to the user.

[0034] In the scented sheet for an aerosol-generating article according to one embodiment of the present invention, the natural scent raw material is not limited as long as it is a natural product, and examples thereof include 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, salvia, spearmint, ginger, coriander, and coffee.

[0035] In the scented sheet for aerosol-generating articles according to one embodiment of the present invention, the content of the natural scent material may be 10 to 40 wt %, preferably 13 to 37 wt %, based on the total weight of the scented sheet. If the content of the natural scent material is below the above-mentioned range, the scent intensity is low, making it difficult to provide a sense of satisfaction to the user. On the other hand, if the content of the natural scent material exceeds the above-mentioned range, the amount of hydrocolloid and plasticizer added will be low, degrading the quality of the scented sheet for aerosol-generating articles.

[0036] In the scented sheet for an aerosol-generating article according to one embodiment of the present invention, the plasticizer serves to extract and capture the natural fragrance from the natural fragrance raw material and form the sheet. The plasticizer may include at least one selected from the group consisting of medium-chain triglyceride (MCTG), propylene glycol (PG), and glycerin. Preferably, the plasticizer is a medium-chain fatty acid.

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

[0038] The content of the plasticizer may be 0.5 to 2 times the content of the natural fragrance raw material. If the plasticizer content is below the above range, the scent cannot be sufficiently captured, the scent intensity after production of the scented sheet is low, which reduces the production quality of the aerosol-generating product, and the flexibility of the sheet is low, which may make the scented sheet easily damaged during processing.On the other hand, if the plasticizer content exceeds the above range, it is difficult to produce the scented sheet in sheet form.

[0039] In the scented 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 polymeric substance obtained by processing a substance extracted from a natural substance. For example, the hydrocolloid may include 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, hydroxypropylmethyl cellulose (HPMC), methyl cellulose (MC), ethyl cellulose (EC), and carboxymethyl cellulose (CMC). The starch may include various raw and modified starches. Preferably, the hydrocolloid may be methylcellulose.

[0040] In the scented sheet for an aerosol-generating article according to one embodiment of the present invention, the content of the hydrocolloid may be 20 to 55 wt % based on the total weight of the scented sheet. If the content of the hydrocolloid is below the above range, the sheet will not be formed smoothly. On the other hand, if the content of the hydrocolloid exceeds the above range, the content of the natural scent material and plasticizer will decrease, resulting in a weaker scent.

[0041] On the other hand, preferably, the content of the hydrocolloid may be 25 to 40% by weight so that the scented sheet has an appropriate tensile strength. In the scented sheet for an aerosol-generating article according to one embodiment of the present invention, the scented sheet for an aerosol-generating article may further include a filler, and the filler may be, for example, dextrin.

[0042] In the scented sheet for an aerosol-generating article according to one embodiment of the present invention, the content of the filler may be 5 to 15 wt %, preferably 7 to 10 wt %, based on the total weight of the scented sheet.

[0043] In the fragrance sheet for an aerosol-generating article according to one embodiment of the present invention, "for an aerosol-generating article" means that the fragrance sheet is included in at least one selected from the group consisting of a medium, a filter, and a wrapper. That is, the aerosol-generating article can be scented using the fragrance sheet for an aerosol-generating article according to one embodiment of the present invention. Meanwhile, the method for manufacturing the fragrance sheet includes a step of immersing natural fragrance ingredients in a plasticizer, which improves the retention and durability of the fragrance compared to spraying liquid fragrance.

[0044] Here, the fragrance sheet for an aerosol-generating article can be applied to the aerosol-generating article by cutting, folding, or coating. For example, the fragrance sheet may be applied to the medium portion and / or filter portion of the aerosol-generating article by cutting or folding. In the case of a wrapper, the fragrance sheet may be manufactured to match the wrapping paper, or may be manufactured through a coating process in which a prepared liquid is directly cast on 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 following embodiments. 1. Manufacturing method of fragrance sheets The scented sheets of Examples 1 to 5 were manufactured in the following manner. The components and contents added when manufacturing the Examples and Comparative Examples are shown in Table 1 below. The sheets could not be manufactured without adding a plasticizer.

[0046] (1) Step S1: Preparation of immersion solution A soaking solution was prepared by soaking 2 g of coffee powder in 2 g of medium-chain fatty acid (MCTG) and then leaving it at 25°C for 48 hours.

[0047] (2) S2 step: Preparation of solution First, a hydrocolloid solution was prepared by dissolving 8 g of methylcellulose (MC) and 2 g of dextrin in a solvent, which 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 a solution. The preparation was left at 25°C for 24 hours to remove air bubbles. (3) S3 Step: Manufacturing of scented sheets The prepared solution was cast onto a release film at a certain thickness and then dried at 60 to 80° C. to produce a fragrance sheet.

[0049] Embodiment 2 The product was produced in the same manner as in Example 1, except that 5 g of coffee powder and 5 g of medium-chain fatty acid (MCTG) were added.

[0050] Embodiment 3 The same method as in Example 1 was used to produce the product, except that 10 g of coffee powder, 5 g of medium-chain fatty acid (MCTG), and 65 g of water were added.

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

[0052] Embodiment 5 The same method as in Example 1 was used to produce the product, except that 10 g of coffee powder, 10 g of medium-chain fatty acid (MCTG), and 60 g of water were added.

[0053] [Table 1]

[0054] 2. Test Example 1: Composition of Fragrance Sheet The components and contents contained in the scented sheets after production of the first to fifth embodiments are shown in Table 2 below.

[0055] [Table 2]

[0056] 3. Test Example 2: Evaluation of ease of manufacturing and sheet quality During the production of embodiments 1 to 5, a test was conducted to comprehensively evaluate the ease of preparation of the liquid formulation and the quality of the produced fragrance sheets, and they were evaluated according to the following three grades. The results are shown in Table 3.

[0057] ○: Excellent △: Good X: Bad

[0058] [Table 3]

[0059] The fragrance sheets according to the above-described embodiments and comparative examples all exhibited excellent ease of preparation of the liquid. However, in the case of embodiment 5, the tensile strength of the produced scented sheet was low, and the quality of the scented sheet was evaluated as insufficient.

[0060] 4. Test Example 3: Evaluation of fragrance retention A sensory evaluation was conducted to confirm the retention and persistence of the scent of the first to fifth embodiments. The sensory evaluation was conducted by evaluating the degree of scent release perceived by the user during use. Here, the aerosol-generating article was manufactured by cutting a flavored sheet into small pieces into cigarettes for a non-combustion aerosol-generating article, and then heated in a device. The sensory evaluation was conducted on panelists with five or more years of smoking experience, with 12 to 20 panelists. Evaluation was conducted 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 a low fragrance intensity, and the fragrance preservation and durability were reduced. The fragrance intensity of the fragrance sheets of Examples 2 to 4, which are excellent in both quality and fragrance retention, was evaluated, and the results showed that the order of increasing intensity was: Example 4 < Example 2 < Example 3. That is, the fragrance intensity of Example 3, which contained the most coffee powder, was slightly higher than that of Examples 2 and 4.

[0064] From the above test examples, it can be seen that by using the method for manufacturing a fragrance sheet described in the claims, not only can fragrance sheets be easily manufactured in a simple and economical manner, but fragrance sheets manufactured by this method can achieve a fragrance close to that of nature and have excellent fragrance retention and long-lasting properties, making it possible to provide an aerosol-generating article that can improve user satisfaction.

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

[0066] Accordingly, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

Claims

1. Step S1: preparing a soaking solution by soaking natural fragrance raw materials in a plasticizer; Step S2: preparing a solution by mixing a hydrocolloid into the immersion solution; Step S3: Casting and drying the prepared liquid to produce a sheet; A method for producing a scented sheet for an aerosol-generating article, comprising:

2. 2. The method for producing a scented sheet for an aerosol-generating article according to claim 1, wherein in step S1, the plasticizer extracts and captures the natural fragrance from the natural fragrance raw material.

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

4. The step S2 includes a step a1 of preparing a hydrocolloid solution; Step a2 of mixing the hydrocolloid solution and the immersion solution to prepare a liquid preparation; Step a3 of leaving the prepared solution; A method for producing the scented sheet for an aerosol-generating article according to claim 1, comprising:

5. In step S3, the prepared solution is cast to a constant thickness in step b1; Step b2: drying the cast liquid at 60 to 80°C; A method for producing the scented sheet for an aerosol-generating article according to claim 1, comprising:

6. A scented sheet for an aerosol-generating article, produced by the production method of claim 1, Contains naturally derived fragrance ingredients, plasticizers, and hydrocolloids. The fragrance sheet for an aerosol-generating article, wherein the naturally derived fragrance raw material is in powder form.

7. 7. The scented sheet for an aerosol-generating article according to claim 6, 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, salvia, spearmint, ginger, coriander, and coffee.

8. 7. The scented sheet for an aerosol-generating article according to claim 6, wherein the plasticizer comprises at least one selected from the group consisting of medium-chain fatty acids, propylene glycol, and glycerin.

9. 7. The scented sheet for an aerosol-generating article according to claim 6, wherein the hydrocolloid is a substance extracted from a natural substance or a natural polymeric substance obtained by processing a substance extracted from a natural substance.

10. 7. The scented sheet for an aerosol-generating article according to claim 6, 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.

11. 7. The scented sheet for an aerosol-generating article according to claim 6, wherein the content of the natural scent raw material is 10 to 40% by weight based on the total weight of the scented sheet.

12. 7. The scented sheet for an aerosol-generating article according to claim 6, wherein the content of the plasticizer is 10 to 40 wt % based on the total weight of the scented sheet.

13. 7. The scented sheet for an aerosol-generating article according to claim 6, wherein the content of the hydrocolloid is 20 to 55% by weight based on the total weight of the scented sheet.

14. The perfumed sheet for an aerosol-generating article according to claim 6, wherein the perfumed sheet is contained in at least one selected from the group consisting of a medium portion, a filter portion, and a wrapper.

15. The perfumed sheet for an aerosol-generating article according to claim 6, which is applied to the aerosol-generating article by cutting, folding, or coating.

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