A sealed heated cigarette with a plug

Abstract

The present invention belongs to the field of heat-not-burn cigarettes, and particularly relates to a hermetically heated cigarette with a plug. The cigarette includes, from upstream to downstream, a plug (5), a tobacco section (1), a low draw resistance section (2), and a functional filter section (3) that are coaxially abutted in sequence, and an outer wrapper (4) is wrapped around the cigarette; wherein, the low draw resistance section (2) is a tube body having an axial central cavity (2-1) and circumferential side wall through holes (2-2), and the number of the side wall through holes (2-2) is at least one. The present invention designs for the first time a hermetically sealed cigarette with a plug. Since the formed fresh smoke has a displacement effect on the internal atmosphere of the cigarette, the oxygen content in the cigarette will decrease during the heating process, and even if the temperature is increased, combustion will not occur. Therefore, the heating temperature can be increased to fully release the tobacco aroma components and increase the amount of smoke. The design of the plug can reduce the difficulty of cigarette production and manufacturing.

Description

Technical Field

[0001] The present invention belongs to the field of heat-not-burn cigarettes, and particularly relates to a hermetically heated cigarette with a plug. Background Art

[0002] Traditional tobacco has a history of hundreds of years and has been integrated into the lives of most smokers. In recent years, with the improvement of people's living standards, issues such as smoking and health, and the harm of second-hand smoke have been increasingly emphasized by people, and the harmfulness brought by traditional tobacco products has become increasingly prominent. At the same time, with the implementation of the WHO Framework Convention on Tobacco Control, especially the gradual expansion of the scope of smoking bans in public places around the world, the development environment of tobacco products has undergone major and profound changes, and the tobacco product structure is accelerating its adjustment towards diversification and smokelessness. New tobacco products have gradually become a realistic choice for major multinational tobacco companies to cope with the increasingly declining sales of traditional tobacco products.

[0003] At present, the vast majority of heat-not-burn cigarettes use air as the carrier of the smoke. In order to ensure that the tobacco does not burn, the heating temperature applied is usually relatively low, generally not exceeding 300°C. Compared with traditional cigarettes, the tobacco flavor components of new heat-not-burn cigarettes are difficult to be completely released, and the amount of smoke is insufficient. Therefore, such cigarettes are relatively difficult to be accepted by traditional smokers. In addition, in order to ensure air circulation, the tobacco ends of the vast majority of heat-not-burn cigarettes are of an open structure, that is, the cut tobacco or reconstituted tobacco sheet is directly exposed, or is connected to the outside atmosphere through a certain air flow channel. During the process of pulling out the cartridge after smoking, tobacco residues will fall off, which is likely to pollute the smoking device. Therefore, this type of tobacco needs to spend time cleaning the smoking device after being used for a period of time.

[0004] In order to solve the above problems, the present invention is proposed. Summary of the Invention

[0005] The present invention provides a hermetically heated cigarette with a plug. The cigarette includes a plug 5, a tobacco section 1, a low draw resistance section 2, and a functional filter section 3 that are coaxially abutted in sequence from upstream to downstream. The cigarette is wrapped with an outer wrapper 4;

[0006] Wherein, the low draw resistance section 2 is a tube body having an axial central cavity 2-1 and circumferential side wall through holes 2-2, and the number of the side wall through holes 2-2 is at least one.

[0007] Both the plug 5 and the outer wrapper 4 are made of airtight or controllable air permeability materials, such as aluminum foil.

[0008] Preferably, the plug 5 is cylindrical in shape, has good thermal stability, and will not deform due to temperature rise.

[0009] Preferably, the plug 5 has a certain thermal stability and will not undergo significant deformation below 400 degrees Celsius.

[0010] Preferably, a coaxial through-hole 4-1 is provided at a position corresponding to the side-wall through-hole 2-2 on the outer wrapping member 4, and the aperture of the coaxial through-hole 4-1 is not less than that of the side-wall through-hole 3-2.

[0011] Preferably, the low suction resistance section 2 can be an empty tube.

[0012] Preferably, the functional filter section 3 includes a temperature reduction section 3-1 and a filtering section 3-2.

[0013] Preferably, the tobacco section 1 includes cut tobacco, tobacco flakes, tobacco granules, tobacco formed bodies or tobacco-containing gels.

[0014] The above technical solutions can be freely combined on the premise of no contradiction.

[0015] The present invention has the following beneficial effects:

[0016] 1. The present invention designs a closed cigarette with a plug for the first time, which is used in combination with a heating type smoking device. Due to the presence of the plug and the low suction resistance section, air does not flow through the tobacco section during suction, and the fresh smoke formed by the tobacco matrix has a displacement effect on the internal atmosphere of the cigarette. The oxygen content in the cigarette will decrease during the heating process. At this time, even if the heating temperature is increased, combustion will not occur. Therefore, the heating temperature can be increased to fully release the tobacco aroma components and increase the amount of smoke.

[0017] 2. One end of the tobacco section of the closed cigarette in contact with the cigarette receiving cavity is sealed by a plug, and the situation that tobacco residues fall off and contaminate the smoking device will not occur.

[0018] 3. The closed cigarette of the present invention is designed with a low suction resistance section having an axial central cavity and circumferential side-wall through-holes. During suction, external air enters from the side-wall through-holes, mixes with the smoke generated by heating the tobacco section in the cavity to form the mainstream smoke for people to inhale. At the same time, during suction, external air enters from the side-wall through-holes, the air flow rate in the low suction resistance section is relatively high, and the pressure is relatively low, which has an extraction effect on the smoke of the tobacco section. In addition, the external air has a temperature reduction effect on the smoke.

[0019] 4. The cigarette of the present invention uses a plug to seal the tobacco section. During the cigarette production process, the plug can be co-wound with the tobacco section, which is convenient for industrial production. If components such as a sealing film are used to separately seal the tobacco section, the cigarette production process needs to be changed, which greatly modifies the existing equipment and is not convenient for industrial production. Description of the Drawings

[0020] Figure 1Schematic diagram of the structure of a sealed heating type cigarette with a plug in Embodiment 1 of the present invention.

[0021] List of reference numerals:

[0022] 1. Tobacco section, 2. Low suction resistance section, 2-1. Central cavity, 2-2. Side wall through hole, 3. Functional filter section, 4. Outer wrapper, 4-1. Coaxial through hole, 5. Plug. Detailed implementation manners

[0023] The content of the present invention will be further described below through specific implementation manners.

[0024] Embodiment 1

[0025] A sealed heating type cigarette with a plug, the cigarette includes a plug 5, a tobacco section 1, a low suction resistance section 2, and a functional filter section 3 that are coaxially abutted in sequence from upstream to downstream, and the cigarette is externally wrapped with an outer wrapper 4 tipping paper;

[0026] Wherein, the low suction resistance section 2 is a hollow paper tube with an axial central cavity 2-1 and circumferential side wall through holes 2-2, and the number of the side wall through holes 2-2 is 2.

[0027] Coaxial through holes 4-1 are provided at positions corresponding to the side wall through holes 2-2 on the outer wrapper 4, and the aperture of the coaxial through holes 4-1 is not less than the aperture of the side wall through holes 3-2.

[0028] The functional filter section 3 includes a temperature reduction section 3-1 and a filtering section 3-2.

[0029] The tobacco section 1 includes a tobacco formed body.

[0030] The plug 5 is cylindrical in shape, made of aluminum foil, with a thickness of about 3 mm, and has good thermal stability and will not undergo significant deformation due to temperature rise.

[0031] The above is only the specific implementation manner 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, and all should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A sealed heated cigarette with a plug, characterized in that, The cigarette rod includes, from upstream to downstream, a plug (5), a tobacco section (1), a low draw resistance section (2), and a functional filter section (3) that are coaxially abutted in sequence, and an outer wrapper (4) is wrapped around the cigarette rod; Among them, the low draw resistance section (2) is a tube body having an axial central cavity (2-1) and circumferential side wall through holes (2-2), and the number of the side wall through holes (2-2) is at least one; A coaxial through hole (4-1) is provided at a position corresponding to the side wall through hole (2-2) on the outer wrapper (4), and the aperture of the coaxial through hole (4-1) is not less than the aperture of the side wall through hole (2-2); The low draw resistance section (2) is an empty tube; Both the plug (5) and the outer wrapper (4) are made of airtight materials.

2. The cigarette according to claim 1, characterized in that, The functional filter section (3) includes a temperature reduction section (3-1) and a filtering section (3-2).

3. The cigarette rod according to claim 1, characterized in that, The tobacco section (1) includes cut tobacco, tobacco flakes, tobacco granules, tobacco formed bodies, or tobacco-containing gels.

4. The cigarette according to claim 1, characterized in that, The plug (5) does not deform at a temperature below 400 degrees Celsius.

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