Centrally-heated cigarette allowing for easy removal from heating device, and testing method

Abstract

A centrally-heated cigarette allowing for easy removal from a heating device, comprising: a tobacco section and a filter rod section, wherein the tobacco section and the filter rod section are connected by means of tipping paper and are collinearly arranged in the axis direction; the tobacco section is formed by encircling, wrapping and sleeving the outer surface of a tobacco substance portion (1) with a cigarette paper material by means of a wrapping material portion (3); and the inner side surface of the wrapping material portion (3) is further provided with an adhesive portion (2), so as to be adhered to the outer surface of the tobacco substance portion (1). Also provided is a method for testing the adhesive strength between the tobacco substance portion (1) and a heating element, and between the tobacco substance portion (1) and the wrapping material portion (3) after vaping. The adhesive portion (2) is merely added between the tobacco substance portion (1) and the wrapping material portion (3), and an adhesive material is easily obtained, has relatively low cost, and has small sensory impact. The present invention has the advantages that the centrally-heated cigarette provides good satisfaction and little impurity odor and the like, and ensures that the cigarette can be easily removed from the heating device after vaping and the tobacco substance section is not separated from the cigarette paper, thereby improving the vaping experience of consumers.

Description

A center heating cigarette easy to pull out of a heating smoking set and a testing method

[0001] This application claims priority to Chinese Patent Application No. CN202410428189.8, filed on April 10, 2024, the contents of which are incorporated herein in their entirety by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of heating cigarettes, and specifically relates to a center heating cigarette easy to pull out of a heating smoking set and a testing method. BACKGROUND

[0003] A heating cigarette is heated by an external heat source to make the atomization medium, flavor components and additional flavors in the tobacco material produce smoke similar to traditional cigarette combustion, so that consumers get physiological satisfaction. Since the tobacco material in the heating cigarette is only heated but not burned, the harmful components and biological toxicity of the smoke are greatly reduced, and the smoke is also greatly reduced, so it is very popular.

[0004] From the position of the heat source relative to the heating cigarette, the heating cigarette is divided into center heating cigarette and circumferential (peripheral) heating cigarette. Due to circumferential heating, the temperature of the heat source is lower than that of the center heating, the temperature of the periphery of the cigarette is higher, and the temperature of the center is lower, which is slightly worse than the center heating cigarette. The heat source directly contacts and heats the cigarette paper, and the "wooden gas" and other paper burning odors are slightly larger. In terms of sensory quality of the heating cigarette, the center heating cigarette is better than the circumferential heating cigarette.

[0005] However, when the center heating cigarette is smoked, the heat source of the heating device directly contacts and heats the tobacco material, which is carbonized, sintered and coked, and is easily adhered to the heating element. When the cigarette is smoked, it is difficult to pull out the cigarette from the heating smoking set, the tobacco material section is separated from the cigarette paper, and the whole is left in the heating cavity of the heating smoking set, which causes cleaning difficulty and greatly reduces the smoking experience of consumers. SUMMARY

[0006] To solve the technical problem of the center heating cigarette remaining in the heating smoking set after smoking in the prior art, the present application provides a center heating cigarette easy to pull out of a heating smoking set. While maintaining the advantages of good satisfaction and less miscellaneous gas of the center heating cigarette, the cigarette is easy to pull out as a whole, and the tobacco material section is not separated from the cigarette paper when the cigarette is smoked and pulled out of the heating smoking set, which improves the smoking experience of consumers. At the same time, the present technical solution provides a method for testing the adhesion between the tobacco material and the heating element and the adhesion between the tobacco material and the covering material after smoking of the heating cigarette.

[0007] The application provides a center heating cigarette easy to pull out of a heating smoking set, and the specific technical scheme is as follows, comprising: a tobacco section and a filter rod section.

[0008] The tobacco section and the filter rod section are connected through tipping paper and are arranged in line along the axial direction.

[0009] The tobacco section is formed by wrapping the outer surface of the tobacco material part with the wrapping material part.

[0010] The inner side of the wrapping material part is further provided with an adhesive part for adhering to the outer surface of the tobacco material part.

[0011] Preferably, the coating area of the adhesive part on the inner side of the wrapping material part is 10%-60% of the area of the tobacco material part projected onto the inner side of the wrapping material part.

[0012] Preferably, the tobacco material part is one or a mixture of reconstituted tobacco leaf and silk-like tobacco leaf.

[0013] Preferably, the reconstituted tobacco leaf specifically comprises one or a combination of silk-like roller pressing reconstituted tobacco leaf and silk-like thick paste reconstituted tobacco leaf.

[0014] Preferably, the reconstituted tobacco leaf further comprises one or a combination of glycerol and propylene glycol as an atomizing agent.

[0015] Preferably, the coating style of the adhesive part on the inner side of the wrapping material part is one of point, line and surface.

[0016] Preferably, the adhesive part is arranged on the inner side of the wrapping material part along the outer surface of the tobacco material part in a circumferential direction.

[0017] Preferably, the adhesive parts are evenly distributed on the inner side of the wrapping material part.

[0018] Preferably, the adhesive part is one or a combination of water-based glue and hot melt glue for cigarettes.

[0019] A test method for a center heating cigarette easy to pull out of a heating smoking set, and the specific steps are as follows:

[0020] S1, covering a temperature-resistant film on the end surface of the tobacco material part and tightly adhering and fixing the temperature-resistant film on the outer surface of the tobacco section;

[0021] S2, after the tobacco section is smoked, the tobacco section is fixed, and the maximum pulling force N1 of the heating smoking set is measured when the tobacco section is pulled out, and the maximum pulling force N1 can represent the adhesive force between the tobacco section and the heating smoking set.

[0022] S3, tear off the film of the tobacco segment end face, fix the tobacco segment, pull out the tobacco material part, and measure the maximum pulling force N2 of the tobacco material part at this time, which represents the bonding force between the tobacco material part and the coating material part.

[0023] In order to solve the problem in the prior art that when the heated cigarette is pulled out of the heating device after smoking, it is difficult to pull out the cigarette, the tobacco material part is separated from the cigarette paper and remains in the heating cavity of the heating device, and cleaning is difficult, the application increases the bonding part between the tobacco material part and the coating material part, which can be realized by using the existing cigarette production equipment and process without adding new equipment or modifying and increasing the process. The center heated cigarette can maintain good satisfaction and less odor, and when the cigarette is pulled out of the heating device after smoking, the bonding force N1 between the tobacco part and the heating element after smoking is obviously smaller than the bonding force N2 between the tobacco material part and the coating material part. The cigarette can be easily pulled out as a whole, the tobacco material part is not separated from the cigarette paper, and the smoking experience of the consumer is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings needed in the embodiment or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Fig. 1 is a cross-sectional structure schematic diagram of a center heated cigarette of the easy-to-pull-out heating device in a specific embodiment;

[0026] Fig. 2 is an expanded structure schematic diagram of the center heated cigarette of the easy-to-pull-out heating device in Fig. 1;

[0027] Fig. 3 is a cross-sectional structure schematic diagram of a center heated cigarette of the easy-to-pull-out heating device in another specific embodiment;

[0028] Fig. 4 is an expanded structure schematic diagram of the center heated cigarette of the easy-to-pull-out heating device in Fig. 3;

[0029] Fig. 5 is a cross-sectional structure schematic diagram of a center heated cigarette of the easy-to-pull-out heating device in another specific embodiment;

[0030] Fig. 6 is an expanded structure schematic diagram of the center heated cigarette of the easy-to-pull-out heating device in Fig. 5.

[0031] Specific reference signs are as follows: 1, tobacco material part; 2, bonding part; 3, coating material part. DETAILED DESCRIPTION

[0032] In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" or "several" is two or more, unless otherwise explicitly specified.

[0036] It should be understood that the structures, proportions, sizes, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the description, to enable those skilled in the art to understand and read, and do not have technical significance, and any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0037] The center heating cigarette provided by the present application is easy to pull out and heat a heating smoking set. The specific structure of the center heating cigarette includes a tobacco section and a filter rod section.

[0038] The tobacco segment and the filter rod segment are connected by tipping paper and are arranged in line along the central axis direction to form a complete cigarette structure for a consumer to smoke, wherein the tobacco segment is formed by wrapping the outer surface of the tobacco material portion 1 with a wrapping material portion 3, specifically, the wrapping material portion 3 is connected to the tobacco material portion 1 by lamination, and the tobacco segment and the filter rod segment are cylindrical structures with the same diameter, which is convenient for the consumer to take out from the cigarette box.

[0039] The present application also connects the tobacco material portion 1 with the adhesive portion 2 arranged on the inner side of the wrapping material portion 3, so that when the wrapping material and the tobacco material portion are relatively displaced after smoking, the adhesive portion 2 provides a pulling force in addition to the friction force. In addition to using the adhesive portion 2 to provide the pulling force, the size of the area of the adhesive portion 2 is also one of the important improvements of the present technical solution. In the present technical solution, the coating area of the adhesive portion 2 on the inner side of the wrapping material portion 3 is 10%-60% of the area of the tobacco material portion 1 projected onto the inner side of the wrapping material portion 1. For the coating area of the adhesive portion 2, the inventor has concluded through experiments that as long as the coating area of the adhesive portion 2 is within 10%-60%, the adhesive force between the tobacco material portion 1 and the wrapping material portion 3 can be greater than the adhesive force between the tobacco material portion 1 and the heating element, thereby avoiding being adhered to the heating element.

[0040] Compared with the prior art, whether it is a traditional cigarette or a heated cigarette, the wrapping material is only wrapped on the outside of the tobacco material portion, and the wrapping material and the tobacco material portion have a simple mechanical wrapping relationship, without adding and applying any substance, and without being adhered to each other. When the wrapping material and the tobacco material portion are relatively displaced, only friction exists, and the friction is often less than the adhesive force between the tobacco material portion 1 and the heating element.

[0041] It is found that after smoking with a central heating smoking set, the tobacco material portions of the heated cigarette are closely and strongly adhered to each other, and the tobacco segment is in the form of a cylinder as a whole. After the central heating element of the heating smoking set is heated at 300-350℃ for several minutes, the tobacco portion is carbonized, sintered and coked, and is closely adhered to the heating element, and the tobacco material portions in the tobacco portion are also closely and strongly adhered to each other. Moreover, compared with the tobacco material portions, the surface of the central heating element is relatively flat, while the tobacco material portions may be overlapped, staggered, entangled and adhered to each other. Therefore, after smoking the cigarette, the degree of adhesion of the tobacco portion to the heating element is less than the degree of adhesion of the tobacco material portions in the tobacco portion to each other.

[0042] The technical scheme is based on the above findings of the inventor and force analysis of the center heating cigarette during pulling out. Since the tobacco section after being smoked by the center heating smoking set is a closely adhered columnar whole, and the adhesion between the tobacco section and the heating element is less than the adhesion between the tobacco material sections, only the adhesion part 2 between the tobacco material section 1 and the covering material section 3 is needed to be added, and the material with adhesion ability is arranged to better adhere the tobacco material section 1 and the covering material section 3, so that the adhesion between the tobacco material section 1 and the covering material section 3 is greater than the adhesion between the tobacco material section 1 and the heating element. When the cigarette is smoked and pulled out from the heating smoking set, the tobacco material section and the cigarette paper will not be separated, and the whole can be pulled out, which greatly improves the smoking experience of the consumer.

[0043] Preferably, in the technical scheme, through actual production test, it is found that the coating area of the adhesion part 2 on the inner side of the covering material section 3 is in the range of 10%-60% of the area of the tobacco material section 1 projected to the inner side of the covering material section, so as to provide better adhesion between the tobacco material section 1 and the covering material section 3.

[0044] Further, in the technical scheme, in order to provide more smoking experience for consumers, the smoking material in the tobacco material section 1 is one or a combination of reconstituted tobacco leaf and filamentous tobacco leaf, so as to obtain different experiences.

[0045] Further, since the reconstituted tobacco leaf also has various process methods, the reconstituted tobacco leaf in the technical scheme specifically includes: filamentous roller pressing reconstituted tobacco leaf and filamentous thick paste reconstituted tobacco leaf, which are one of them and a combination thereof, and the reconstituted tobacco leaf obtained by using different manufacturing methods can bring more combined smoking experience to consumers for personalized selection.

[0046] Further, when the aerosol generated by heating the reconstituted tobacco leaf in the tobacco material section 1 is incomparable to the filamentous tobacco leaf, the reconstituted tobacco leaf will also add an atomizing agent, and the specific components of the atomizing agent are one or a combination of glycerol and propylene glycol, which provides flavor for simulating the filamentous tobacco leaf during combustion.

[0047] Preferably, as an important part of the adhesion between the tobacco material section 1 and the covering material section 3, the coating pattern of the adhesion part 2 on the inner side of the covering material section 3 also determines the size of the adhesion, and in the technical scheme, the coating pattern of the adhesion part 2 is one of point, line and surface.

[0048] Further, the adhesive part 2 is arranged along the circumferential direction of the outer surface of the tobacco material part 1 on the outer surface of the covering material part 3, and a plurality of connection rings are formed by connecting the adhesive parts 2 at the ends, and a plurality of the connection rings are arranged along the axial direction of the tobacco material part 3 and arranged on the inner side of the covering material part 3.

[0049] Further, in order to provide more stable adhesive force, the adhesive parts 2 are uniformly distributed on the inner side of the covering material part 3.

[0050] Preferably, the adhesive part 2 is made of one of a water-based glue for cigarettes or a hot melt glue and a combination thereof, and specifically, the adhesive part 2 is selected as the water-based glue for cigarettes as the adhesive material for cigarettes, because the adhesive performance of the water-based glue for cigarettes or the hot melt glue for cigarettes is sufficient to meet the performance requirements, and the negative impact of the water-based glue on the sense of taste is smaller than that of the hot melt glue, so the water-based glue is more suitable in the technical solution.

[0051] As a preferred, the technical solution is also directed to a test method for the adhesive force between the tobacco part and the heating element after the heating cigarette is smoked, and the adhesive force between the tobacco material part 1 and the covering material part 3, and the specific steps are as follows:

[0052] S1, a temperature-resistant film connected with a measuring instrument is used to cover the end surface of the tobacco material part 3 and tightly fixed on the outer surface of the tobacco segment;

[0053] S2, the heating smoking set is inserted into the tobacco segment, and simulated combustion smoking is performed, and after the tobacco segment is smoked, the tobacco segment is fixed, the heating smoking set is pulled out, the maximum pulling force N1 at this time is measured, and the maximum pulling force N1 can represent the adhesive force between the tobacco segment and the heating smoking set;

[0054] S3, the film on the end surface of the tobacco segment is torn off, the tobacco segment is fixed, and the tobacco material part 1 is pulled out, and the maximum pulling force N2 of the tobacco material part 1 at this time is measured, and the maximum pulling force N2 can represent the adhesive force between the tobacco material part 1 and the covering material part 3.

[0055] Next, referring to FIGS. 1-6, the central heating cigarette easy to pull out the heating smoking set provided by the present application is described in detail, and three specific embodiments are described in detail.

[0056] First embodiment:

[0057] In the embodiment, the adhesion part 2 is coated on the inner side surface of the wrapping material part 3 in a planar form, and is circumferentially arranged on the inner side surface of the wrapping material part 3. Through the planar coating form, the tobacco material part 1 and the wrapping material part 3 can be better provided with uniform adhesion.

[0058] Further, in the embodiment, as shown in FIG. 1 and FIG. 2, the adhesion part 2 is coated on the inner side surface of the wrapping material part 3 in a planar form, and is circumferentially arranged on the inner side surface of the wrapping material part 3. Through the planar coating form, the tobacco material part 1 and the wrapping material part 3 can be better provided with uniform adhesion.

[0059] Further, in the embodiment, the tobacco material part 1 is in a form of filament tobacco, which is as much as possible to restore the smoking experience of traditional cigarettes, and an atomizing agent is added in the tobacco material part 1. Specifically, the atomizing agent is glycerol, and the mass content of the atomizing agent in the filament tobacco is 12%.

[0060] Meanwhile, the adhesion between the tobacco material part 1 and the heating element after smoking of the heating cigarette, and the adhesion between the tobacco material part 1 and the wrapping material part 3 are tested by the testing method provided by the present application. In the embodiment, the adhesion N1 between the tobacco material part 1 and the heating element after smoking of the heating cigarette is 0.28 kgf (kilogram force), and the adhesion N2 between the tobacco material part 1 and the wrapping material part 3 is 1.48 kgf (kilogram force). It can be seen that N1 is obviously less than N2, and the problem of adhesion between the tobacco material part 1 and the heating element after smoking of the heating cigarette is completely solved.

[0061] Second embodiment:

[0062] In the embodiment, the adhesion part 2 is coated on the inner side surface of the wrapping material part 3 in a planar form, and is circumferentially arranged on the inner side surface of the wrapping material part 3. Through the planar coating form, the tobacco material part 1 and the wrapping material part 3 can be better provided with uniform adhesion.

[0063] Further, in the embodiment, as shown in FIG. 3 and FIG. 4, the adhesion part 2 is coated on the inner side surface of the wrapping material part 3 in a planar form, and is circumferentially arranged on the inner side surface of the wrapping material part 3. Through the planar coating form, the tobacco material part 1 and the wrapping material part 3 can be better provided with uniform adhesion.

[0064] Further, in the present embodiment, the tobacco material 1 is a mixture of the rolled sheet tobacco and the thick slurry sheet tobacco, providing a mixed smoking experience, and the mixed mass ratio is 1:1, and the rolled sheet tobacco and the thick slurry sheet tobacco are both added with the atomizing agent; the atomizing agent is glycerol, and the mass content of the atomizing agent in the rolled sheet tobacco is 15%.

[0065] Meanwhile, in the present embodiment, the adhesion N1 between the tobacco material 1 and the heating element after the cigarette is smoked is 0.39 kgf (kilogram force), and the adhesion N2 between the tobacco material 1 and the coating material 3 is 1.68 kgf (kilogram force), and it can be seen that N1 is obviously smaller than N2, completely solving the problem of sticking between the tobacco material 1 and the heating element after the cigarette is smoked.

[0066] Third embodiment:

[0067] In the present embodiment, the center heating cigarette is easy to pull out, and the coating area of the adhesion part 2 on the inner side of the coating material 3 is 50% of the area of the tobacco material 1 projected to the inner side of the coating material 3, so as to provide adhesion between the tobacco material 1 and the coating material 3 through the adhesion part 2.

[0068] Further, in the present embodiment, as shown in FIGS. 3 and 4, the coating style of the adhesion part 2 on the inner side of the coating material 3 is a dot form, which is uniformly and dispersedly arranged on the inner side of the coating material 3, and through the uniformly and dispersedly arranged form, the adhesion between the tobacco material 1 and the coating material 3 can be better provided, and the tobacco material 1 is uniformly adhered through the multiple layers of parallel linear adhesion parts 2.

[0069] Further, in the present embodiment, the tobacco material 1 is a mixture of the rolled sheet tobacco, the thick slurry sheet tobacco and the sheet tobacco, providing a complex smoking experience of mixed sheet tobacco on the basis of retaining the original tobacco leaves, and the mixed mass ratio is 1:1:1, and the rolled sheet tobacco and the thick slurry sheet tobacco are added with the atomizing agent; the atomizing agent is glycerol and propylene glycol with a mass ratio of 3:2, and the mass content of the atomizing agent in the sheet tobacco is 17%.

[0070] Meanwhile, in the present embodiment, the adhesion N1 between the tobacco material 1 and the heating element after the cigarette is smoked is 0.51 kgf (kilogram force), and the adhesion N2 between the tobacco material 1 and the coating material 3 is 2.16 kgf (kilogram force), and it can be seen that N1 is obviously smaller than N2, completely solving the problem of sticking between the tobacco material 1 and the heating element after the cigarette is smoked.

[0071] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A center-heated cigarette that is easy to pull out of the heating device, characterized in that: include: Tobacco segment, filter rod segment; The tobacco segment and the filter rod segment are connected by tipping paper and arranged collinearly along the axis direction; The tobacco segment is formed by wrapping the cigarette paper material with the covering material portion and sheathing it on the outer surface of the tobacco material portion; The inner side surface of the covering material portion is further provided with an adhesive portion for bonding with the outer surface of the tobacco material portion.

2. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 1, characterized in that: The coating area of ​​the adhesive portion on the inner side of the covering material portion is 10%-60% of the area of ​​the tobacco material portion projected onto the inner side of the covering material portion.

3. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 2, characterized in that: The tobacco material portion is made of one of reconstituted tobacco leaves and filamentous tobacco leaves, or a mixture thereof.

4. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 3, characterized in that: The reconstituted tobacco specifically includes: filamentous roller-pressed reconstituted tobacco and filamentous thick pulp reconstituted tobacco, which are made from one of them or a combination thereof.

5. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 3, characterized in that: An atomizer is also added to the reconstituted tobacco leaves, and the atomizer is made of one of glycerol and propylene glycol, or a combination thereof.

6. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 2, characterized in that: The coating pattern of the adhesive portion on the inner side surface of the covering material portion is one of: point, line, and surface.

7. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 6, characterized in that: The bonding portion is arranged on the inner side surface of the covering material portion along the circumference of the outer surface of the tobacco material portion.

8. The center-heated cigarette of the easy-to-pull-out heating smoking device according to claim 7, characterized in that: The bonding portions are evenly distributed on the inner side surfaces of the covering material portion.

9. The center-heated cigarette of the easy-to-pull-out heating smoking device according to any one of claims 1 to 8, characterized in that: The bonding portion is made of one of water-based adhesive or hot-melt adhesive for cigarettes, or a combination thereof.

10. A method for testing center-heated cigarettes with easy-to-pull-out heating devices, characterized in that: The specific steps are as follows: S1. Cover the end surface of the tobacco material portion with a heat-resistant film and tightly fix it on the outer surface of the tobacco segment; S2. After the tobacco segment is smoked, the tobacco segment is fixed, and the heating device is pulled out to measure the maximum extraction force N1 of the heating device. The maximum extraction force N1 can represent the adhesion strength between the tobacco segment and the heating device. S3. Tear off the film on the end surface of the tobacco segment, fix the tobacco segment, pull out the tobacco material portion, and measure the maximum pull-out force N2 of the tobacco material portion at this time. The maximum pull-out force N2 can represent the adhesion strength between the tobacco material portion and the coating material portion.

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