A smoking article comprising a combustible heat source formed with airflow apertures

Abstract

The present invention provides a smoking article comprising a combustible heat source, comprising: a first portion comprising a combustible heat source, a second portion comprising a smoking material, an airflow aperture extending from a downstream end of the first portion to an upstream end of the combustible heat source, and a buffer space located between the first portion and the second portion and connected to the airflow aperture; the airflow aperture not extending through the combustible heat source, the smoking article having the effect of increasing the burn duration by using a combustible heat source comprising an airflow aperture.

Description

Technical Field

[0001] This invention relates to smoking articles comprising a combustible heat source having airflow holes. Background Technology

[0002] Compared to combustion-based smoking products, various forms of heated smoking products have emerged. Unlike existing cigarettes, non-combustible smoking products involve inhaling the aerosol generated by the heated smoking medium, rather than burning the medium itself. Smoking products using combustible carbon as a heat source are one type of heated smoking product.

[0003] The smoking product using the above-mentioned combustible carbon heat source generates an aerosol by transferring heat from the combustible carbon heat source to the smoking product medium downstream of the combustible carbon heat source.

[0004] Smoking products that use combustible carbon heat sources, unlike typical heated electronic cigarettes which require specialized equipment, offer a smoking experience similar to traditional cigarettes, and therefore their demand is constantly increasing.

[0005] Existing technical documents

[0006] Patent documents

[0007] Patent document 1WO2009 / 022232(2009.02.19) Summary of the Invention

[0008] The problem the invention aims to solve

[0009] The purpose of this invention is to provide a smoking article that includes a combustible heat source, wherein airflow holes are formed on the combustible heat source to improve combustion duration.

[0010] means for solving problems

[0011] The present invention provides a smoking article 100 including a combustible heat source, comprising: a first portion 110 including a combustible heat source; a second portion 120 including cigarette material; an airflow hole 210 extending from the downstream end of the first portion 110 to the upstream of the combustible heat source; and a buffer space 220 located between the first portion 110 and the second portion 120 and connected to the airflow hole 210, wherein the airflow hole does not penetrate the combustible heat source.

[0012] According to one embodiment of the present invention, the diameter d2 of the airflow hole can be 5% to 60% of the diameter d1 of the combustible heat source, and the depth l2 of the airflow hole can be 10% to 80% of the length l1 of the combustible heat source.

[0013] According to another embodiment of the present invention, the diameter d1 of the combustible heat source can be 6 mm to 12 mm, and the diameter d2 of the airflow hole can be 1 mm to 5 mm.

[0014] According to another embodiment of the present invention, the length l1 of the combustible heat source can be 10 mm to 16 mm, and the depth l2 of the airflow hole can be 1 mm to 12 mm.

[0015] According to another embodiment of the present invention, the length of the buffer space 220 may be from 0.5 mm to 3 mm.

[0016] According to another embodiment of the present invention, a metal barrier 300 may be formed at the end of the second portion 120 that contacts the buffer space 220.

[0017] According to another embodiment of the present invention, a thermally conductive packaging material 160 may be included to enclose the first portion 110 and the second portion 120.

[0018] According to another embodiment of the present invention, the outer peripheral surface of the thermally conductive packaging material 160 may include at least one perforation 161.

[0019] According to another embodiment of the present invention, the smoking article may include an outer cigarette paper 150 for wrapping the smoking article including a combustible heat source.

[0020] According to another embodiment of the present invention, the outer peripheral surfaces of the thermally conductive packaging material 160 and the outer cigarette paper 150 may include at least one perforation 161, 151.

[0021] According to another embodiment of the present invention, the size of the perforation may be less than 0.5 mm.

[0022] According to another embodiment of the present invention, the smoking article 100 including the combustible heat source may further include: a third part 130 including a cooling material; and a fourth part 140 including a filter material.

[0023] Invention Effects

[0024] The smoking product of the present invention, which includes a combustible heat source, is characterized by using a combustible heat source with airflow holes to achieve excellent combustion continuity. Attached Figure Description

[0025] Figure 1 The accompanying drawing shows the structure of the smoking article of the present invention, which includes a combustible heat source.

[0026] Figure 2a This is an accompanying drawing showing the transmission path of the heated airflow when inhaling the smoking article of the present invention.

[0027] Figure 2b This is an accompanying drawing showing the inflow path of external air when inhaling the smoking article of the present invention.

[0028] Figure 3 This is an enlarged view of the flammable heat source of the present invention.

[0029] Explanation of reference numerals in the attached figures

[0030] 100: Smoking products containing flammable heat sources

[0031] 110: Part One 120: Part Two 130: Part Three

[0032] 140: Part Four; 150: Outer Cigarette Paper; 151: Perforation

[0033] 160: Thermally conductive packaging material; 161: Perforation; 210: Airflow holes

[0034] 220: Buffer space; 300: Metal barrier; d1: Diameter of heat source

[0035] d2: Diameter of airflow orifice; l1: Length of heat source; l2: Length of airflow orifice Detailed Implementation

[0036] The present invention will now be described in detail to enable those skilled in the art to readily implement it. However, the present invention can be implemented in various forms and is not limited to the description herein.

[0037] Furthermore, in the description with reference to the accompanying drawings, the same reference numerals are used for the same constituent elements regardless of the drawing numbers, and repeated descriptions are omitted. In describing the embodiments, detailed descriptions of relevant well-known technologies are omitted when it is determined that such detailed descriptions would unnecessarily obscure the embodiments.

[0038] In this article, "the length direction of a smoking article including a combustible heat source" refers to the direction in which the length of the smoking article including the combustible heat source extends or the direction in which the smoking article including the combustible heat source burns during combustion.

[0039] In this document, the terms "upstream" and "downstream" are defined as follows: When a user inhales outside air using a smoking product containing a flammable heat source, the portion of the smoking product from the outside to the inside, and the portion of the smoking product from the inside to the outside, is defined as "upstream," and the portion of the smoking product from the inside to the outside, is defined as "downstream." "Upstream" and "downstream" are used to indicate the relative position or direction between different parts or sections of the smoking product. For example, the upstream end of the heat source may refer to the heat source end face of the smoking product; the downstream end of the heat source may refer to the surface that abuts against the buffer space.

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Figure 1 The accompanying drawing shows the structure of the smoking article of the present invention, which includes a combustible heat source.

[0042] Reference Figure 1 For example, a smoking article 100 including a combustible heat source includes: a first part 110 including a combustible heat source and a second part 120 including cigarette material, wherein the first part 110 and the second part 120 are arranged sequentially along the length direction of the smoking article 100 including the combustible heat source.

[0043] The smoking article 100 is characterized by having an airflow hole 210. The airflow hole 210 is recessed within a combustible heat source, extending from the downstream end of the first portion of the combustible heat source to its upstream end. When the smoking article is inhaled, the upstream end of the combustible heat source is ignited and begins to burn. The airflow hole is characterized by having a structure that "does not penetrate" the entire heat source. Because the airflow hole does not penetrate the entire heat source, the combustion temperature of the heat source is maintained at a temperature sufficient for smoking, while also allowing for a smoking time of more than 180 seconds.

[0044] Here, the first part 110 and the second part 120 are configured at a certain interval, and a buffer space 220 connected to the airflow orifice is included between them. The airflow orifice 210 and the buffer space 220 are substantially connected to each other and share a common space. A metal barrier 300 is formed at the end of the second part 120 that contacts the buffer space 220, that is, at the upstream end of the second part.

[0045] The combustible heat source can be, for example, a carbon material heat source. Furthermore, the combustible heat source can have a porous structure. As used in this application, the term "carbon material" is used to describe a combustible heat source containing carbon. Preferably, in the combustible carbon material heat source used in the smoking articles of the present invention, the carbon content can be at least about 40% by dry weight, at least about 50% by dry weight, at least about 60% by dry weight, at least about 70% by dry weight, or at least about 80% by dry weight.

[0046] As needed, at least one adhesive can be combined with at least one carbon-containing material. Preferably, the at least one adhesive can be an organic adhesive. Suitable organic adhesives known are not limited to this, including gums (e.g., guar gum), modified cellulose and cellulose derivatives (e.g., methylcellulose, carboxymethylcellulose, hydroxypropylcellulose and hydroxypropylmethylcellulose), flour, starch, sugar, vegetable oil, and combinations thereof.

[0047] The combustible heat source for the smoking article used in this invention may include at least one additive to replace the binder, or at least one additional additive in addition to the binder to improve the properties of the combustible heat source. Suitable additives include, but are not limited to, additives that promote the consolidation of the combustible heat source (e.g., sintering aids), additives that promote the ignition of the combustible heat source (e.g., oxidants such as perchlorates, chlorates, nitrates, peroxides, potassium permanganate, zirconium, and combinations thereof), additives that promote the combustion of the combustible heat source (e.g., potassium and potassium salts such as potassium citrate), and additives that promote the decomposition of at least one gas generated by the combustion of the combustible heat source (e.g., catalysts such as CuO, Fe2O3, and Al2O3).

[0048] Preferably, at least one carbon-containing material can be mixed with at least one binder and any other additives (if present), and the mixture can be pre-formed into the desired shape to produce a combustible heat source. The mixture of at least one carbon-containing material, at least one binder, and optional other additives can be pre-formed into the desired shape by any suitable and known ceramic forming method such as slip casting, extrusion molding, injection molding, compression molding, or stamping.

[0049] Preferably, a stamping or extrusion molding process is used to form the flammable heat source. Most preferably, a stamping process is used to form the flammable heat source.

[0050] Preferably, the combustible heat source may have a concentration between approximately 0.8 g / cm³. 3 Approximately 3.0 g / cm³ 3 The apparent density between the two values ​​is preferred, and the combustible heat source may have a mass between about 300 mg and about 500 mg, more preferably between about 400 mg and about 450 mg.

[0051] However, the heat source of the present invention is not limited to the above description. The present invention includes heat sources of all known materials that can provide heat to the smoking article 100, which includes a combustible heat source.

[0052] Part 120 may include cigarette material. The cigarette material may include at least one of tobacco shreds, tobacco sheet shreds, tobacco leaves, expanded smoking articles, and nicotine extracts. The cigarette material may contain nicotine. In addition to the cigarette material, it may also include aerosol-generating substances. Aerosol-generating substances include esters of polyols such as polyols, glycerol monoacetate, glycerol diacetate, or glycerol triacetate, and aliphatic esters of monocarboxylic acids, dicarboxylic acids, or polycarboxylic acids such as dodecanedioate and tetradecanedioate. More specifically, for example, it may include at least one of glycerol, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol. For example, Part 120 may include tobacco sheet shreds soaked in glycerol. However, the above are merely examples, and the invention is not limited to these examples.

[0053] The length of the second part can be between about 5 mm and about 20 mm, more preferably between about 8 mm and about 12 mm. The second part is wrapped with paper or other packaging material and can be formed into a stopper shape or a segment shape, containing a substance that releases volatile compounds upon heating. As described above, when the second part is formed into a stopper or segment, the entire stopper or segment including any packaging material can be considered as the second part.

[0054] In this invention, the smoking article 100, which includes a combustible heat source, may further include a third part 130 containing a cooling material and a fourth part 140 containing a filter material.

[0055] The third portion 130 may include a cooling material. The third portion 130 includes a hollow tube open at one end, capable of cooling the airflow passing through the first portion 110 to the second portion 120. The third portion 130 may be made of a polymeric material or a biodegradable polymeric material and may have a cooling function. For example, the third portion 130 may be paper, cardboard, plastic, such as cellulose acetate, ceramics, and combinations thereof. Further, the cooling element may include a corrugated sheet made of a material selected from the group consisting of metal foil, polymeric materials, and substantially non-porous paper or cardboard. In some embodiments, the aerosol cooling element may include a corrugated sheet made of a material selected from the group consisting of polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET), polylactic acid (PLA), cellulose acetate (CA), and aluminum.

[0056] The fourth portion 140 may include filter material. For example, the fourth portion 140 may be a cellulose acetate filter rod. Alternatively, the shape of the fourth portion 140 is not limited. For example, the fourth portion 140 may be a cylindrical rod or a hollow tubular rod. Alternatively, the fourth portion 140 may also be an embedded rod. If the fourth portion 140 is formed as multiple segments, at least one of the segments may be of a different shape.

[0057] In addition, it may include a tipping paper that wraps around the fourth part and contacts the mouthpiece. The tipping paper may have one or more perforations.

[0058] The fourth part 140 can be made to produce a fragrance. For example, a fragrance liquid can be sprayed onto the fourth part 140, or a single fiber coated with fragrance liquid can be inserted into the fourth part 140.

[0059] The third and fourth parts may include aerosol modifiers. For example, the third and fourth parts of the smoking article of the present invention, as well as one or more of the tipping paper, may contain at least one aerosol modifier. Suitable aerosol modifiers include, but are not limited to, flavoring agents and chemesthetic agents. The flavoring agent is any substance that adds one or more of the taste or aroma to the cigarette material of the smoking article and the aerosol generated by the aerosol-generating substances during use.

[0060] The downstream applications of the smoking article of the present invention may further include at least one aerosol modifier as a flavoring agent and a chemisensitive agent. For example, at least one of the third and fourth portions of the smoking article of the present invention may include menthol or other flavoring agents that provide an icy sensation.

[0061] Furthermore, the smoking article 100, which includes a combustible heat source, may include a thermally conductive packaging material 160 that encloses the first portion 110 and the second portion 120. The thermally conductive packaging material may completely enclose the first and second portions, or it may enclose a portion of the first portion and a portion of the second portion, or it may enclose a portion of the first portion and the entirety of the second portion.

[0062] The thermally conductive packaging material transfers heat generated by the flammable heat source to the cigarette material. The packaging material can be metal foil packaging materials such as aluminum foil packaging materials, steel foil packaging materials, iron foil packaging materials, and copper foil packaging materials; as well as metal alloy foil packaging materials. Any material that effectively transfers heat can be used without restriction.

[0063] A metal barrier 300 can be formed at the end of the second part (the upper or upstream end of the second part) that contacts the buffer space. Here, the metal barrier can prevent flammable heat sources from directly contacting the medium part and can prevent some components generated by the flammable heat sources from moving into the medium part.

[0064] The thickness of the barrier can be appropriately adjusted to achieve good smoke extraction performance. In some embodiments, the thickness of the barrier may be between about 10 micrometers and about 500 micrometers. The barrier may include one or more metallic materials that remain substantially thermally stable and non-combustible at the temperature of a flammable heat source during ignition and combustion. These materials are well known in the art and include, but are not limited to, aluminum, copper, stainless steel, and combinations thereof.

[0065] Furthermore, the smoking article 100, which includes a combustible heat source, may also include an outer cigarette paper 150 that wraps part or all of the smoking article 100 including the combustible heat source. For example, the outer cigarette paper 150 may wrap all of the first part 110, the second part 120, the third part 130, and the fourth part 140, or it may wrap the first part 110, the second part 120, and the third part 130 except for the filter rod.

[0066] At least one perforation 161 or 151 may be formed on the thermally conductive packaging material 160 and the outer cigarette paper 150. The perforations 161 or 151 completely overlap and are substantially connected, serving the same function as perforations. They allow heat generated from the heat source to be discharged to the outside of the smoking product or allow air from the outside of the smoking product to flow in through the perforations formed on the thermally conductive packaging material and the outer cigarette paper. Preferably, the size of the perforation is less than 0.5 mm, so that external air can flow in effectively while internal air can flow out.

[0067] The perforations can be formed by wrapping the first and second parts with thermally conductive packaging material and outer cigarette paper using an on-line perforation process, or by forming perforations (off-line) separately on the thermally conductive packaging material and outer cigarette paper, and then connecting the perforations in an overlapping manner during material assembly. The perforations can be achieved through mechanical perforation, electro-perforation, or laser perforation.

[0068] Wrapping the various parts of a smoking article 100, which includes a combustible heat source, with outer cigarette paper 150 can improve the bonding between the parts. For example, the first part 110, the second part 120, the third part 130, and the fourth part 140 can be interconnected and arranged adjacent to each other through the outer cigarette paper 150. For example, the outer cigarette paper 150 can be formed as cellulose cigarette paper. However, this disclosure is not necessarily limited to this.

[0069] As an example, when a user uses the smoking article 100, which includes a flammable heat source, the first part 110 is ignited, and the user inhales the fourth part 140. As a result, external air can flow into the first part 110 of the smoking article 100, which includes a flammable heat source. That is, an airflow can be formed within the smoking article 100, which includes a flammable heat source.

[0070] Reference Figure 2a When the smoking article 100, which includes a flammable heat source, is ignited, the heated airflow formed in the first part 110 is transferred to the buffer space 220 through the airflow hole 210, and then transferred to the second part 120 through the thermally conductive packaging material and the barrier 300. The buffer space 220 may have a thickness of 0.5 mm to 3 mm to provide a certain distance between the flammable heat source and the metal barrier, and preferably, it may have a length of 0.8 to 1.5 mm.

[0071] For example, such as Figure 2a As shown, the heated airflow formed in the first part 110 flows in the direction of the arrow, and then exits to the outside through the perforations 161 of the thermally conductive packaging material and the perforations 151 of the outer cigarette paper, as... Figure 2b As shown, external air flows in the direction of the arrow, entering the interior through the perforations 161 in the thermally conductive packaging material and the perforations 151 in the outer cigarette paper. Typically, to improve the thermal conductivity of the flammable heat source and the metal barrier, they should be maximally fitted together. However, achieving perfect fit is difficult in the manufacturing process. Therefore, the above-described structure is adopted. Based on the structure of this invention, external air can continuously flow into the airflow holes of the flammable heat source and into the space between the flammable heat source and the barrier. The flowing external air can move through the above process, thereby continuously supplying air to the flammable heat source and improving the continuity of combustion.

[0072] Figure 3 This is a diagram showing the structure of the flammable heat source in the first part 110. The flammable heat source has a cylindrical shape, with the diameter gradually decreasing towards the front, narrowing at the ends to form a trapezoidal cross-section. However, this is only an example; the heat source can also be formed as a quadrilateral cross-section structure with a uniform diameter or a triangular cross-section structure with a diameter converging to 0.

[0073] Reference Figure 3 The diameter d2 of the airflow hole can be 5% to 60% of the diameter d1 of the combustible heat source, preferably 20% to 40%.

[0074] As described above, the airflow orifice has a structure that "does not penetrate" the entire heat source; it extends along its length and does not extend to the front of the heat source. The depth l2 of the airflow orifice can be 10% to 80% of the length l1 of the flammable heat source, preferably 50% to 70%.

[0075] For example, the diameter d1 of the combustible heat source can be 6 mm to 12 mm, and the diameter d2 of the airflow hole can be 1 mm to 5 mm.

[0076] The embodiments will now be described in detail with reference to the accompanying drawings. It should be understood that various modifications can be made to the embodiments, and the scope of this application is not limited to or restricted to the embodiments described below. All modifications to the embodiments, their equivalents, and even their substitutes are within the scope of this invention.

[0077] Unless otherwise defined, all terms used herein, including technical or scientific terms, shall have their ordinary meanings as understood by one of ordinary skill in the art. Terms commonly used, such as those defined in dictionaries, shall be understood as having their meanings in the relevant technical context and shall not be interpreted as idealized or overly formalized meanings unless explicitly defined in this specification.

[0078] [Example]

[0079] 1. Heat source preparation method

[0080] Example 1

[0081] A heat source is prepared under the following conditions, and a buffer space with a thickness of 1 mm is formed using it. Then, cigarette material, cooling material, and filter material are assembled to prepare a smoking product. A metal barrier is also included between the buffer space and the cigarette material.

[0082] Heat source length: 12mm; Heat source diameter: 8mm; Airflow orifice diameter: 2mm; Airflow orifice depth: 7.2mm; Airflow orifice end shape: circular.

[0083] After assembling the smoking product, four 0.5mm perforations are formed by laser perforation in the portion of the heat-conducting packaging material that forms the heat source and cigarette material, as well as the portion of the outer cigarette paper that forms the buffer space.

[0084] Example 2

[0085] Prepared in the same manner as in Example 1, except that the shape of the airflow hole end is changed to a sharp shape.

[0086] Example 3

[0087] Prepared in the same manner as in Example 1, except that the length of the heat source was changed to 10 mm and the depth of the airflow hole was changed to 5 mm.

[0088] Example 4

[0089] Prepared in the same manner as in Example 1, except that the length of the heat source was changed to 10 mm and the depth of the airflow hole was changed to 7 mm.

[0090] Example 5

[0091] Prepared in the same manner as in Example 1, except that the thickness of the buffer space was changed to 2 mm.

[0092] Example 6

[0093] Prepared in the same manner as in Example 1, except that the thickness of the buffer space is changed to 2 mm, the length of the heat source is changed to 14 mm, the diameter of the airflow hole is changed to 2.5 mm, and the depth of the airflow hole is changed to 11.2 mm.

[0094] Example 7

[0095] Prepared in the same manner as in Example 1, except the perforation size was changed to 0.7 mm.

[0096] Comparative Example 1

[0097] A smoking product without airflow holes on the heat source was prepared in the same manner as in Example 1.

[0098] Comparative Example 2

[0099] A smoking product without a buffer space was prepared in the same manner as in Example 1.

[0100] Comparative Example 3

[0101] Prepared in the same manner as in Example 1, except that the depth of the airflow holes was changed to 11 mm.

[0102] Comparative Example 4

[0103] A non-perforated smoking article was prepared in the same manner as in Example 1.

[0104] 2. Confirm combustion persistence

[0105] Using the smoking products of Examples 1 to 7 and Comparative Examples 1 to 4, the smoking products were smoked using an automatic smoking device under ISO smoking conditions (without clogging the perforations of the sprinkling paper, a smoking cycle of one minute, each puff lasting 2 seconds, and 35 ml of smoking volume being inhaled to 3 mm above the sprinkling paper) and the burning duration was confirmed.

[0106] The results are shown in Table 1.

[0107] Table 1

[0108] Burning duration (seconds) Example 1 212 Example 2 206 Example 3 193 Example 4 202 Example 5 209 Example 6 190 Example 7 201 Comparative Example 1 140 Comparative Example 2 159 Comparative Example 3 179 Comparative Example 4 158

[0109] Based on the above results, the smoking product with the structure of the present invention can maintain good combustion duration for more than 180 seconds, while the smoking product using a heat source without airflow holes maintains combustion duration for less than 160 seconds.

[0110] While the embodiments described above are based on limited examples and accompanying drawings, those skilled in the art can make various modifications and changes based on the foregoing description. For example, suitable results can also be obtained if the described techniques are performed in a different order than the described methods, and / or if the constituent elements in the described system, architecture, apparatus, or circuit are combined or integrated in different forms, or replaced or substituted by other constituent elements or equivalents.

[0111] Therefore, other embodiments, other examples, and equivalents of the claims should be interpreted as being included within the scope of the appended claims.

Claims

1. A smoking product comprising a combustible heat source, characterized in that, include: The first part includes flammable heat sources. The second part includes cigarette substances. An airflow orifice extends from the downstream end of the first portion to the upstream of the flammable heat source, and A buffer space is located between the first part and the second part and is connected to the airflow hole; The airflow hole does not penetrate the flammable heat source; The depth of the airflow orifice is 10% to 80% of the length of the flammable heat source; When the smoking product is ignited, external air flows into the buffer space and moves into the airflow hole of the flammable heat source, where it is heated.

2. The smoking product comprising a combustible heat source according to claim 1, characterized in that, The diameter of the airflow orifice is 5% to 60% of the diameter of the flammable heat source.

3. The smoking product comprising a combustible heat source according to claim 2, characterized in that, The diameter of the flammable heat source is 6mm to 12mm. The diameter of the airflow hole is 1 mm to 5 mm.

4. The smoking product comprising a combustible heat source according to claim 2, characterized in that, The length of the flammable heat source is 10mm to 16mm. The depth of the airflow hole is 1 mm to 12 mm.

5. The smoking article comprising a combustible heat source according to claim 1, characterized in that, The thickness of the buffer space is 0.5 mm to 3 mm.

6. The smoking article comprising a combustible heat source according to claim 1, characterized in that, The end of the second portion that contacts the buffer space also includes a metal barrier.

7. The smoking article comprising a combustible heat source according to claim 1, characterized in that, Includes thermally conductive packaging material for wrapping the first part and the second part.

8. The smoking article comprising a combustible heat source according to claim 1, characterized in that, Includes outer cigarette paper for wrapping a smoking product containing the flammable heat source.

9. The smoking article comprising a combustible heat source according to claim 1, characterized in that, The packaging includes one or more of a thermally conductive packaging material and an outer cigarette paper, wherein the thermally conductive packaging material is used to wrap the first part and the second part, and the outer cigarette paper is used to wrap the smoking product including the flammable heat source. The outer peripheral surface of one or more of the thermally conductive packaging material and the outer cigarette paper includes one or more perforations.

10. The smoking article comprising a combustible heat source according to claim 9, characterized in that, The size of the perforation is less than 0.5 mm.

11. The smoking article comprising a combustible heat source according to claim 1, characterized in that, The smoking product including a combustible heat source further includes: The third part includes cooling materials; and The fourth part includes filter materials.

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