A heat-not-burn tobacco rod and a heat-not-burn cigarette

Abstract

The present application relates to the technical field of tobacco products, and discloses a heating non-combustion tobacco core and a heating non-combustion cigarette. The heating non-combustion tobacco core comprises a tobacco section and a filter section, and a combustion-supporting unit is embedded in the tobacco section. The combustion-supporting unit has a transverse structure and a longitudinal structure. The transverse structure extends from the inner region of the tobacco section to the circumferential boundary of the tobacco section. The longitudinal structure is arranged along the axial direction of the tobacco section. The transverse structure and the longitudinal structure jointly constitute a guide path for guiding the movement direction of the suction airflow in the tobacco section. According to the present application, the combustion-supporting unit embedded in the tobacco section can be in contact with the heating pin, and the transverse structure and the longitudinal structure can uniformly transmit the heat of the heating pin to all parts of the tobacco section, thereby improving the overall thermal conductivity of the tobacco section. In addition, the airflow guide path formed in the tobacco section can reasonably distribute the heating airflow, so that the tobacco section can fully exchange heat and promote the uniformity and sufficiency of the smoke release.

Description

Technical Field

[0001] This invention relates to the field of tobacco product technology, specifically to a heated tobacco core and a heated tobacco cigarette. Background Technology

[0002] Heated tobacco products (HTMS) are a type of cigarette that uses an external heat source to heat tobacco materials. Their core feature is that they release nicotine and flavor compounds by precisely controlling the temperature of the tobacco instead of burning it. The heating temperature is usually controlled below 350°C, which is much lower than the combustion temperature of traditional cigarettes, which is about 900°C. HTMS avoids the high-temperature combustion and decomposition process of tobacco, which can reduce the release of harmful components by more than 90%. At the same time, their taste and smoking experience are closer to traditional cigarettes than e-cigarettes. In terms of the shape of the heating element, the heating method can be divided into the central heating type, in which the heating element is inserted into the tobacco, and the external heating type, in which the heating element surrounds the outside of the cigarette.

[0003] In the existing technology, when the center heating of the heating pin is used, the aerosol products generated by the tobacco segment are mostly porous materials with low overall thermal conductivity. This can easily lead to uneven heating of the outer and inner parts of the tobacco, a single airflow path, short contact time, and insufficient heat exchange, which affects the uniformity and fullness of smoke release. Summary of the Invention

[0004] This invention provides a heated tobacco core and a heated cigarette. By embedding a combustion-aiding unit that can contact the heating pin within the tobacco segment, the heating state of each part of the tobacco segment is improved. In addition, with the help of the transverse and longitudinal structures, the heat from each part of the heating pin is evenly transferred to each part of the tobacco segment. Furthermore, with the airflow guiding path formed within the tobacco segment, the heating airflow can be rationally distributed, solving the problems of low thermal conductivity, single airflow path, and uneven and insufficient smoke release mentioned in the background art.

[0005] This invention provides the following technical solution: A heated tobacco core includes a tobacco segment and a filter segment. A combustion-supporting unit is embedded in the tobacco segment. The combustion-supporting unit has a transverse structure and a longitudinal structure. The transverse structure extends from the inner region of the tobacco segment toward the circumferential boundary of the tobacco segment. The longitudinal structure is arranged along the axial direction of the tobacco segment. The transverse structure and the longitudinal structure together constitute a guide path for guiding the direction of the suction airflow within the tobacco segment.

[0006] As a preferred embodiment of the present invention, the central region of the combustion-supporting unit has an axial accommodating space for the heating pin to pass through.

[0007] As a preferred embodiment of the present invention, the transverse structure and the longitudinal structure are integrally formed.

[0008] As a preferred embodiment of the present invention, the combustion-supporting unit is a sheet-like structure that extends spirally along the axial direction.

[0009] As a preferred embodiment of the present invention, the combustion-supporting unit includes a plurality of independent heat-conducting elements arranged at intervals along the axial direction. The independent heat-conducting elements have the transverse structure, and the plurality of independent heat-conducting elements together constitute the longitudinal structure.

[0010] As a preferred embodiment of the present invention, the independent heat-conducting components are distributed in a ring, radial or staggered pattern along the circumference.

[0011] As a preferred embodiment of the present invention, the combustion-supporting unit is made of aluminum foil.

[0012] As a preferred embodiment of the present invention, there is a gap of 0.1mm-1.0mm between the outer end of the transverse structure and the inner peripheral wall of the tobacco segment.

[0013] As a preferred embodiment of the present invention, the filter segment includes: a first support member, a second support member, and a filter support member connected in sequence, wherein the first support member is connected to the tobacco segment, and the first support member and the second support member are respectively provided with a first channel and a second channel at their centers; a first covering material covering the tobacco segment, the first support member, the second support member, and the filter support member, wherein a second covering material is provided at the first support member and the second support member, and a third covering material is provided at the second support member and the filter support member, and the first covering material, the second covering material, and the third covering material cover the tobacco segment, ... supporting material, the second supporting material, and the filter support member in sequence from the inside to the outside.

[0014] A heated tobacco product, comprising a heated tobacco core.

[0015] Compared with the prior art, the present invention provides a heated non-combustible cigarette core and a heated non-combustible cigarette, which have the following beneficial effects: 1. In this heated tobacco core, the axial accommodating space of the combustion-supporting unit is consistent with the diameter of the heating pin, which not only ensures the smooth insertion of the heating pin, but also allows for full contact with the heating pin, effectively transferring the heat of the heating pin to all parts of the tobacco segment.

[0016] 2. In this heated tobacco core, the heat is directed from the central heating element to the circumferential boundary of the tobacco section through the transverse structure of the combustion-supporting unit, while the longitudinal structure conducts heat along the axial direction, so that each area of ​​the tobacco section is heated evenly during the smoking process, avoiding local overheating or insufficient heating, thereby ensuring the stability of the amount and composition of smoke released in each puff and improving the consistency of the smoking taste.

[0017] 3. In this heated tobacco core, the guide path formed by the horizontal and vertical structures guides the airflow along a specific path through the tobacco section during inhalation, prolonging the contact path and time between the airflow and the tobacco, so that the smoke-generating agent and flavor components in the tobacco are fully carried, improving the smoke release efficiency and reducing the residue of insufficient atomization.

[0018] 4. In this heated non-combustible smoke core, the combustion-supporting unit can be integrally formed or assembled separately from materials such as aluminum foil through mature processes such as stamping, cutting, and folding. The manufacturing process is simple, the material cost is low, it is suitable for large-scale automated production, and has good commercial application prospects.

[0019] The parts of this device not described herein are the same as or can be implemented using existing technologies. This invention improves the heating state of various parts of the tobacco section by embedding a combustion-supporting unit that can contact the heating pin within the tobacco section. In addition, with the help of the transverse and longitudinal structures, the heat from various parts of the heating pin is evenly transferred to various parts of the tobacco section, improving the overall thermal conductivity of the tobacco section. Furthermore, with the airflow guiding path formed within the tobacco section, the heating airflow can be rationally distributed, allowing the tobacco section to fully exchange heat and promoting the uniformity and fullness of smoke release. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0021] Figure 1 This is a first-state planar sectional view of the present invention; Figure 2 This is a planar sectional view of the second state of the present invention; Figure 3 This is a schematic diagram of one embodiment of the combustion-supporting unit of the present invention; Figure 4 This is another schematic diagram of the combustion-supporting unit of the present invention; Figure 5 This is a comparison diagram of heat distribution when the present invention is used.

[0022] In the figure: 1. Tobacco segment; 2. First support member; 201. First channel; 3. Second support member; 301. Second channel; 4. Filter support member; 5. Combustion-supporting unit; 501. Axial accommodating space; 6. Heating pin; 7. First wrapping material; 8. Second wrapping material; 9. Third wrapping material. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1: Reference Figures 1-5 A heated tobacco core includes a tobacco section 1 and a filter section. In use, a heating pin 6 is inserted into the tobacco section 1 for heating, while the filter section is inhaled by the user. A combustion-supporting unit 5 is embedded in the tobacco section 1, which directly contacts the heating pin 6 after insertion to conduct heat. Specifically, the combustion-supporting unit 5 has a transverse structure and a longitudinal structure. The transverse structure extends from the inner region of the tobacco section 1 to the circumferential boundary of the tobacco section 1, and is used to conduct heat from the center of the tobacco section 1 to the periphery of the tobacco section 1 through the transverse structure, so as to maximize the heating uniformity of the center and outer ring of the tobacco section 1. The longitudinal structure is arranged along the axial direction of the tobacco section 1, and its length is approximately the same as that of the inserted heating pin 6, so as to ensure uniform heating throughout the tobacco section 1. In addition, the transverse structure and the longitudinal structure together constitute a guide path for guiding the direction of airflow within the tobacco section 1.

[0025] In the above scheme, by embedding a combustion-supporting unit 5 that can contact the heating pin 6 inside the tobacco segment 1, the heating state of each part of the tobacco segment 1 is improved. In addition, with the horizontal and vertical structures, the heat from each part of the heating pin 6 is evenly transferred to each part of the tobacco segment 1, thereby improving the overall thermal conductivity of the tobacco segment 1. Furthermore, with the airflow guiding path formed inside the tobacco segment 1, the heating airflow can be reasonably distributed, allowing the tobacco segment 1 to fully exchange heat and promoting the uniformity and fullness of smoke release.

[0026] In some embodiments, the central region of the combustion-supporting unit 5 is formed with an axial accommodating space 501 for the heating pin 6 to pass through. During the process of the heating pin 6 being inserted into the tobacco segment 1, the central region of the tobacco segment 1 is damaged, forming a heating channel. In order to ensure that the heating pin 6 is not obstructed during insertion, the axial accommodating space 501 of the combustion-supporting unit 5 is consistent with the diameter of the heating pin 6, which not only ensures the smooth insertion of the heating pin 6, but also allows for full contact with the heating pin 6, effectively transferring the heat of the heating pin 6 to all parts of the tobacco segment 1.

[0027] Reference Figures 1-3In some embodiments, the transverse and longitudinal structures are integrally formed, that is, a sheet-like structure that extends spirally along the axial direction of the tobacco segment 1, with a pitch ranging from 2.5mm to 4mm, preferably 3.8mm, and the number of spiral turns is 3 to 5, preferably 3, so as to ensure that it fills the tobacco segment 1 without affecting the smoking effect.

[0028] Reference Figure 4 In some embodiments, the combustion-supporting unit 5 includes 2-6 independent heat-conducting elements arranged at intervals along the axial direction. The independent heat-conducting elements have a transverse structure, and multiple independent heat-conducting elements together constitute a longitudinal structure. The number of independent heat-conducting elements is preferably 4, and the transverse structure is perpendicular to the axis of the tobacco segment 1.

[0029] In some embodiments, the transverse structure of the independent heat conductors is arranged in a ring shape, such as 2-4 rings connected together, radially distributed, such as each independent heat conductor having a fan-shaped transverse structure, or staggered, such as the gap between the transverse structures of the previous independent heat conductors corresponding to the solid part of the next independent heat conductor, so that the direction of the suction airflow in the tobacco section 1 has multiple effects, which can determine both the burning speed of the tobacco core and the burning path of the tobacco core.

[0030] In some embodiments, the combustion-supporting unit 5 is made of aluminum foil with a thickness of 5μm-80μm, preferably 20μm. In other embodiments, it can be made of aluminum alloy, copper alloy or ceramic material.

[0031] In some embodiments, there is a gap of 0.1 mm to 1.0 mm, preferably 0.4 mm, between the outer end of the transverse structure and the inner peripheral wall of the tobacco segment 1 to ensure ventilation.

[0032] In some embodiments, the filter section includes a first support 2, a second support 3, and a filter support 4 connected in sequence. The first support 2 and the second support 3 mainly utilize the principle of phase change heat absorption or increasing the heat exchange area to reduce the temperature of the flue gas. Their materials are polylactic acid or other phase change composite materials, etc. The filter support 4 is made of cellulose diacetate tow or polylactic acid tow. Specifically, the first support 2 is connected to the tobacco section 1. The first support 2 and the second support 3 are respectively provided with a first channel 201 and a second channel 301 at their centers to allow the flue gas to pass through and to facilitate the flow of the flue gas. The flue gas is cooled; the first wrapping material 7, i.e. the forming paper, which is wrapped around the tobacco section 1, the first support 2, the second support 3 and the filter support 4, is made of wood pulp fiber as the main material. The second wrapping material 8, i.e. the tipping paper, is provided at the first support 2 and the second support 3. Its base material is usually made of hemp pulp or wood pulp. The third wrapping material 9, i.e. the tipping paper, is provided at the second support 3 and the filter support 4. Its base material is usually also made of hemp pulp or wood pulp. The first wrapping material 7, the second wrapping material 8 and the third wrapping material 9 are wrapped from the inside to the outside.

[0033] Example 2: A heated tobacco product includes the heated tobacco core of Example 1, which has a tobacco section 1 and a filter section, and is made into a heated tobacco product by means of a wrapping material.

[0034] Components not described in detail in this article are existing technologies.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A heat-not-burn tobacco core, comprising a tobacco section (1) and a filter section, characterized in that, The tobacco segment (1) is embedded with a combustion-supporting unit (5), which has a transverse structure and a longitudinal structure. The transverse structure extends from the inner region of the tobacco segment (1) toward the circumferential boundary of the tobacco segment (1), and the longitudinal structure is arranged along the axial direction of the tobacco segment (1). The transverse structure and the longitudinal structure together constitute a guide path for guiding the direction of the suction airflow within the tobacco segment (1).

2. The heated non-combustible smoke core according to claim 1, characterized in that, The central region of the combustion-supporting unit (5) has an axial accommodating space (501) for the heating pin (6) to pass through.

3. The heated non-combustible smoke core according to claim 1, characterized in that, The transverse structure and the longitudinal structure are integrally formed.

4. The heated non-combustible smoke core according to claim 3, characterized in that, The combustion-supporting unit (5) is a sheet-like structure that extends spirally along the axial direction.

5. A heated non-combustible smoke core according to claim 1, characterized in that, The combustion-supporting unit (5) includes multiple independent heat-conducting elements arranged at intervals along the axial direction. The independent heat-conducting elements have the transverse structure, and the multiple independent heat-conducting elements together constitute the longitudinal structure.

6. A heated non-combustible smoke core according to claim 5, characterized in that, The independent heat-conducting components are distributed in a ring, radial, or staggered pattern along the circumference.

7. A heated non-combustible smoke core according to claim 1, characterized in that, The combustion-supporting unit (5) is made of aluminum foil.

8. A heated non-combustible smoke core according to claim 1, characterized in that, There is a gap of 0.1mm-1.0mm between the outer end of the transverse structure and the inner peripheral wall of the tobacco segment (1).

9. A heated non-combustible smoke core according to claim 1, characterized in that, The filter segment includes: The first support member (2), the second support member (3), and the filter nozzle support member (4) are connected in sequence. The first support member (2) is connected to the tobacco section (1), and the first support member (2) and the second support member (3) are respectively provided with a first channel (201) and a second channel (301). The first wrapping material (7) covers the tobacco segment (1), the first support (2), the second support (3) and the filter support (4). The first support member (2) and the second support member (3) are provided with a second wrapping material (8), and the second support member (3) and the filter support member (4) are provided with a third wrapping material (9). The first wrapping material (7), the second wrapping material (8) and the third wrapping material (9) are wrapped from the inside to the outside.

10. A heated non-combustible cigarette, characterized in that, Includes the heated non-combustible smoke core as described in any one of claims 1-9.

Images