Heat-not-burn cigarette capable of two-way smoking and smoking method thereof

Abstract

The present invention belongs to the technical field of heat-not-burn cigarettes, and particularly relates to a heat-not-burn cigarette capable of two-way smoking and a smoking method thereof. The cigarette comprises: a solid smoking segment (1), a first filter segment (21) and a second filter segment (22) respectively abutting against the two ends of the solid smoking segment (1). The smoking segment used in the present invention is a hollow rod-shaped structure, with each end abutting against a filter segment. When smoking, the front half of the smoking segment and the back half of the smoking segment can be a cavity segment and a cooling segment to each other. When the front half of the smoking segment is heated, the back half of the smoking segment is used as a cooling segment. The advantage is that while the smoke is cooled by the back half of the smoking segment, the water vapor content in the smoke is greatly reduced due to the water absorption of the smoking substrate in the back half of the smoking segment, thereby avoiding the phenomenon of burning the mouth; and when the back half of the smoking segment is heated again, the moisture content of the entire smoking segment has been greatly reduced due to the previous heating process, and the phenomenon of burning the mouth will not occur.

Description

Technical Field

[0001] The invention belongs to the technical field of heat-not-burn cigarettes, and particularly relates to a heat-not-burn cigarette capable of being smoked in two directions and a smoking method thereof. Background Art

[0002] With the improvement of living standards, people pay more and more attention to their own health problems. In recent years, the health issues of smoking have attracted much attention. In order to meet the changing consumer demand, major domestic and foreign companies have developed various completely hollow tobacco products to replace traditional cigarettes. Among these growing completely hollow tobacco products, electronic cigarettes and heat-not-burn cigarettes are the best.

[0003] As an expanded application of electronic products in the tobacco industry, the advantage of e-cigarettes is that the taste of the smoke is highly variable and can be arbitrarily controlled by adjusting the composition of the smoke oil. However, since the smoke is mainly produced by electronic atomizers, its taste, especially the heat sensation, is still different from that of traditional cigarettes that produce smoke by heating, and old smokers have poor acceptance.

[0004] Heat-not-burn cigarettes are cigarettes that produce smoke from the smoking section of heated cigarettes. The smoke produced by them has a good taste acceptance. Currently, the heat-not-burn cigarettes on the market mainly include a smoking core material section, a hollow support section, a cooling section and a filter section. The smoking core material section is a reconstituted tobacco leaf sheet filled in an orderly or disorderly manner. When the reconstituted tobacco leaf sheet is heated, the flavors and smoke-generating agents loaded thereon are evaporated to produce smoke. However, there are some problems with existing heat-not-burn cigarettes, such as the cooling section is prone to deformation and the smoke temperature is overheated. In response to this, we designed "a rod-shaped smoking section, a preparation method thereof, and a cigarette containing it" (patent application number: 201920751936.6). In the subsequent research and development process, we found that the smoking segment also has the effect of cooling, so we designed "a rod-shaped cigarette and its preparation method" (patent application number: 201910507012.6); but these two designs of cigarettes still have a defect, that is, the utilization rate of smoke agents and flavors is not high. This phenomenon exists not only in cigarettes with this kind of rod-shaped smoking segment, but also in conventional heat-not-burn cigarettes (such as iQOS and GLO). After testing, the residual rate of smoke agents in the iQOS cigarettes after smoking is still 50%-60% of the original amount, and the residual in GLO is slightly lower, but there is also a residual amount of about 45%-50%. The residual rate in the cigarettes described in the above patent is about 50%-65%. This defect not only increases the difficulty of ensuring the amount of smoke, but also causes serious waste of smoke agents and flavors, and increases the cost of product production.

[0005] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0006] The present invention is proposed to solve at least one of the above problems.

[0007] The first aspect of the present invention provides a heat-not-burn cigarette capable of two-way smoking, the cigarette comprising:

[0008] A solid smoking segment 1, and a first filter segment 2121 and a second filter segment 22 respectively abutting against two ends of the solid smoking segment 1.

[0009] Preferably, the solid smoking segment 1 is wrapped with cigarette paper 3, wherein the outer layer of the cigarette paper 3 is a paper layer and the inner layer is a metal foil layer.

[0010] Preferably, the metal foil layer is selected from aluminum foil, tin foil, or an aluminum-plated layer or a tin-plated layer.

[0011] Preferably, the first filter segment 21 and the second filter segment 22 are selected from polylactic acid tow segments, propionate fiber tow segments or acetate fiber tow segments with low suction resistance, and have a length of 10-25 mm.

[0012] Preferably, the solid smoke-generating segment 1 is a hollow rod-shaped structure with a length of 6-12 cm. If it is too short, the cooling effect will be poor, and if it is too long, the smoke will be intercepted too much and the smoke volume will be reduced.

[0013] Preferably, the hollow rod-shaped structure of the solid smoking segment 1 comprises a tube cavity 11 and a tube wall 12 ; the tube wall 12 comprises an axially extending groove 121 , and the opening of the groove 121 faces away from the tube cavity 11 .

[0014] Preferably, the cigarette consists of three sections: a solid smoking section 1 , a first filter section 21 and a second filter section 22 respectively abutting against two ends of the solid smoking section 1 .

[0015] Preferably, the first filter segment 21 and the second filter segment 22 are respectively wrapped with a plugging paper 4 , and the outermost layer of the cigarette is wrapped with a tipping paper 5 .

[0016] Preferably, an identification ring is provided on the cigarette tipping paper where the first filter segment 21 and the solid smoking segment 1 are abutted, and an identification ring is also provided on the cigarette tipping paper where the second filter segment 22 and the solid smoking segment 1 are abutted, and the identification ring is used to mark the insertion position of the cigarette in the smoking device.

[0017] Preferably, the solid smoking segment 1 contains a smoking agent and a flavoring agent.

[0018] Preferably, the solid smoking segment 1 comprises a front half section 13 of the smoking segment abutting against the first filter segment 21 and a rear half section 14 of the smoking segment abutting against the second filter segment 22 .

[0019] The front half 13 and the rear half 14 of the smoking section can be either integral or split.

[0020] Preferably, the first filter segment 21 and the second filter segment 22 are both 10-25 mm in length.

[0021] The second aspect of the present invention provides a smoking method for the heat-not-burn cigarette capable of two-way smoking as described in the first aspect, comprising the following steps: a two-stage heating method is required when smoking the heat-not-burn cigarette, when the front half section 13 of the smoking section is heated, the rear half section 14 of the smoking section is used as a cavity for storing smoke and a cooling section; the air flow 7 enters from the first filter section 21; the smoke enters the oral cavity from the second filter section 22;

[0022] When the inhalation of the first half 13 of the smoking segment is completed, the heating of this segment is stopped, and then the second half 14 of the smoking segment is heated. At this time, the air flow 7 enters from the second filter segment 22, and the first half 13 of the smoking segment can be used as a cavity for storing smoke and a cooling segment; the smoke enters the oral cavity from the first filter segment 21.

[0023] The shaping paper 4 and the tipping paper 5 can be made of conventional paper grades.

[0024] A method for preparing a smoking segment of the present invention comprises the following steps:

[0025] (1. Crush the smoke-generating substrate into powder to obtain a powdered smoke-generating substrate;

[0026] (2) Mix the powdered smoke-generating base material obtained in step (1) with the filler, add the smoke-generating agent and flavors and fragrances, stir and mix, and obtain a smoke-generating segment mixture;

[0027] (3) The smoke-generating segment mixture obtained in step (2) is molded by injection molding, and cut into segments according to actual needs, and dried to obtain smoke-generating segments.

[0028] In step (1), the smoking substrate is tobacco stems; in step (2), the filler is calcium carbonate, and the smoking agent is glycerol; in step (3), drying is performed by air drying, and the drying time is 4 hours.

[0029] Based on mass percentage, the smoking substrate accounts for 40% of the smoking segment, the filler accounts for 30% of the smoking segment, the smoking agent accounts for 25% of the smoking segment, and the flavors and fragrances account for 5% of the smoking segment.

[0030] The above technical solutions can be freely combined under the premise of no contradiction.

[0031] The present invention has the following beneficial effects:

[0032] 1. Conventional heat-not-burn cigarettes are composed of four sections: a smoking section, a hollow support section, a cooling section, and a filter section. The applicant found that the main reason why the smoke temperature of conventional cigarettes is high, that is, the smoke burns the mouth, is that the water vapor content in the smoke is very high. The reason is that the specific heat capacity of water vapor is large, and it is easy to carry a large amount of heat energy to migrate. When this heat energy is released in the consumer's mouth, the mouth burns. The present invention is the first to design a heat-not-burn cigarette that can be smoked in two directions. The smoking section used is a hollow rod-shaped structure, and each of the two ends abuts a filter section. When smoking, the front half of the smoking section and the back half of the smoking section can be a cavity section and a cooling section to each other. When the front half of the smoking section is heated, the back half of the smoking section is used as a cooling section. The advantage is that while the smoke is cooled by the back half of the smoking section, due to the water absorption effect of the smoking substrate, the smoking agent, etc. in the back half of the smoking section, part of the water vapor in the smoke is condensed and adsorbed, and the water vapor content in the smoke is greatly reduced, thereby avoiding the mouth burn phenomenon.

[0033] When the second half of the smoking section is heated again, the moisture content of the entire smoking section has been greatly reduced due to the previous heating process. In addition, the first half still has a certain moisture retention effect. Therefore, the moisture content in the smoke drawn again is naturally lower, and the mouth will not be burned.

[0034] 2. After conventional heat-not-burn cigarettes are smoked, the residual amount of smoke agent and flavors is basically about 50%, which results in a large amount of waste. The heat-not-burn cigarette capable of two-way smoking of the present invention heats and smokes the smoke agent in two sections. After the entire smoking process of the two smoking sections is completed, it is tested that the residual rate of smoke agent in the cigarette is less than 10%, which effectively reduces the waste of smoke agent and flavors. The amount of smoke during smoking is more sufficient and the aroma substances are richer. The reason is that each smoking section undergoes two different heating processes. For example, the first half of the smoking section undergoes two heating processes, namely, direct heating by the heating wire and heating by smoke steam. Therefore, the smoke agent and flavors are volatilized more completely.

[0035] 3. The cigarettes described in the present invention are in the form of the previous step of the normal final product on the cigarette rolling machine, so one link is reduced in the production process, reducing production energy consumption and costs. The present invention saves the cost of the hollow cavity section and the cooling section in the conventional heat-not-burn cigarette, reduces the length of the cigarette, increases the amount of smoke-generating substances contained in the cigarette of the same length, and greatly improves the amount of smoke.

[0036] 4. The heat-not-burn cigarette capable of two-way smoking of the present invention is used in conjunction with a two-stage circumferentially heated smoking device. After smoking one stage, the second stage can be smoked from the other end, thereby making full use of the smoke-generating agent and flavors in the cigarette and reducing waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1It is a schematic diagram of the structure of the heat-not-burn cigarette that can be smoked in both forward and backward directions as described in Example 1.

[0038] Figure 2 It is a schematic diagram of the structure of the smoking section in the cigarette described in Example 1.

[0039] Figure 3 It is a schematic diagram of airflow during inhalation at the first half 13 of the heating and smoking stage of the cigarette of Example 1.

[0040] Reference numerals:

[0041] 1-smoking section, 11-tube cavity, 12-tube wall, 121-groove, 13-front half of the smoking section, 14-rear half of the smoking section, 21-first filter section, 22-second filter section, 3-cigarette paper, 4-molding paper, 5-tipping paper, 6-heating element, 7-air flow, 8-smoke flow. DETAILED DESCRIPTION

[0042] The content of the present invention is further explained below through specific implementation examples.

[0043] Example 1

[0044] A heat-not-burn cigarette that can be smoked in two directions, the cigarette is divided into three sections, the middle of the cigarette is a solid smoking section 1 with a length of 6 cm, and the outside is wrapped with aluminum foil cigarette paper 3. The outer layer of the cigarette paper 3 is a paper layer, and the inner layer is an aluminum foil layer. The two ends of the cigarette are a first filter section 21 and a second filter section 22 made of polylactic acid tow sections, both of which are 10 mm long. The first filter section 21 and the second filter section 22 are wrapped with a forming paper 4, and the three sections are connected and fixed with a tipping paper 5.

[0045] The cigarette sample in this embodiment is referred to as cigarette sample 1. Figure 1 It is a schematic diagram of the structure of the heat-not-burn cigarette that can be smoked in both forward and backward directions as described in Example 1. Figure 2 It is a schematic diagram of the structure of the smoking section in the cigarette described in Example 1. Figure 3 It is a schematic diagram of airflow when the cigarette is inhaled during the first half 13 of the heating smoking section of Example 1.

[0046] Example 2

[0047] A heat-not-burn cigarette that can be smoked in two directions, the cigarette is divided into three sections, the middle is a solid smoking section 1 with a length of 12 cm, and the outside is wrapped with tin foil cigarette paper 3. The outer layer of the cigarette paper 3 is a paper layer, and the inner layer is a tin foil layer. The two ends of the cigarette are a first filter section 21 and a second filter section 22 made of propionate fiber tow, both of which are 25 mm long. The first filter section 21 and the second filter section 22 are wrapped with a forming paper 4, and the three sections are connected and fixed with a tipping paper 5.

[0048] The cigarette sample in this embodiment is called cigarette sample 2.

[0049] Example 3

[0050] A heat-not-burn cigarette that can be smoked in two directions, the cigarette is divided into three sections, the middle is a solid smoking section 1 with a length of 8 cm, and the outside is wrapped with aluminized cigarette paper 3. The cigarette paper 3 is a paper layer with an aluminum-plated inner surface. The two ends of the cigarette are a first filter section 21 and a second filter section 22 made of low-resistance acetate fiber tow, both of which are 15 mm long. The first filter section 21 and the second filter section 22 are wrapped with a forming paper 4, and the three sections are connected and fixed with a tipping paper 5.

[0051] The cigarette sample of this embodiment is called cigarette sample 3.

[0052] Example 4

[0053] A heat-not-burn cigarette that can be smoked in two directions, the cigarette is divided into three sections, the middle is a solid smoking section 1 with a length of 10 cm, and the outside is wrapped with tin-coated cigarette paper 3. The cigarette paper 3 is a paper layer with a tin-coated inner surface. The two ends of the cigarette are a first filter section 21 and a second filter section 22 made of polylactic acid filter tow, each with a length of 20 mm. The first filter section 21 and the second filter section 22 are wrapped with a forming paper 4, and the three sections are connected and fixed with a tipping paper 5.

[0054] The cigarette sample of this embodiment is called cigarette sample 4.

[0055] Ordinary heat-not-burn cigarettes with 1 / 2 the mass of the smoking segment of cigarette sample 1, cigarette sample 2, cigarette sample 3, and cigarette sample 4 were selected as cigarette comparison sample 1, and heat-not-burn cigarettes with the same mass of the smoking segment prepared according to “A rod-shaped smoking segment, preparation method thereof, and cigarette containing the same” (patent application number: 201920751936.6) were selected as cigarette comparison sample 2.

[0056] The cigarette comparison sample 1, cigarette comparison sample 2, cigarette sample 1, cigarette sample 2, cigarette sample 3, and cigarette sample 4 were inserted into a heat-not-burn cigarette smoking device with a circumferential heating method of matching size and smoked. A number of sensory evaluation personnel conducted a sensory evaluation of the cigarettes in accordance with the national standard "Technical Requirements for Sensory Sensory" (GB5606.4-2005), mainly examining the smoke volume of the cigarettes per puff, and detecting the amount of smoke-generating agent residue in the cigarettes after all the puffs were completed according to conventional methods. The comparison is shown in Table 1. The scoring value of the evaluation index smoke volume is: 0-10 points, where the higher the score, the stronger the feeling of smoke volume during the puffing process.

[0057] The sensory evaluation scores of 4 different cigarette samples are shown in Table 1.

[0058] Table 1 Comparison of smoke volume and smoke agent residue of different cigarette samples

[0059]

[0060] As can be seen from Table 1, compared with the heat-not-burn cigarettes in the prior art, the smoke volume of the cigarettes of the present invention is improved and the smoke-generating agent residue is significantly reduced.

[0061] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A heat-not-burn cigarette capable of two-way smoking, characterized in that: Cigarettes include: A solid smoking segment (1), a first filter segment (21) (21) and a second filter segment (22) respectively abutting against two ends of the solid smoking segment (1); The solid smoke-generating segment (1) is a hollow rod-shaped structure; The hollow rod-shaped structure of the solid smoking segment (1) comprises a tube cavity (11) and a tube wall (12); the tube wall (12) comprises an axially extending groove (121), and the opening of the groove (121) faces away from the tube cavity (11); The cigarette consists of three sections: a solid smoking section (1), a first filter section (21) and a second filter section (22) respectively abutting against two ends of the solid smoking section (1); The solid smoking segment (1) comprises a front half section (13) of the smoking segment abutting against the first filter segment (21) and a rear half section (14) of the smoking segment abutting against the second filter segment (22).

2. The heat-not-burn cigarette according to claim 1, characterized in that: The solid smoking segment (1) is wrapped with cigarette paper (3) on the outside, wherein the outer layer of the cigarette paper (3) is a paper layer and the inner layer is a metal foil layer.

3. The heat-not-burn cigarette according to claim 1, characterized in that: The first filter segment (21) and the second filter segment (22) are respectively wrapped with forming paper (4), and the outermost layer of the cigarette is wrapped with tipping paper (5).

4. The heat-not-burn cigarette according to claim 1, characterized in that: The solid smoking segment (1) contains a smoking agent and a flavoring agent.

5. The heat-not-burn cigarette capable of two-way smoking according to claim 1, characterized in that: The length of the solid smoking segment (1) is 6-12 cm.

6. The heat-not-burn cigarette capable of two-way smoking according to claim 1, characterized in that: The lengths of the first filter segment (21) and the second filter segment (22) are both 10-25 mm.

7. The smoking method of the heat-not-burn cigarette capable of two-way smoking according to claim 1, characterized in that: The method comprises the following steps: a two-stage heating method is required when smoking the heat-not-burn cigarette, when the front half of the smoking section (13) is heated, the rear half of the smoking section (14) serves as a cavity for storing smoke and a cooling section; air flow (7) enters from the first filter section (21); smoke enters the oral cavity from the second filter section (22); When the inhalation of the first half (13) of the smoking section is completed, the heating of the section is stopped, and the second half (14) of the smoking section is heated. At this time, the air flow (7) enters from the second filter section (22), and the first half (13) of the smoking section can be used as a cavity for storing smoke and a cooling section; the smoke enters the oral cavity from the first filter section (21).

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