CN117479847A - Method for forming combustible heat source for smoking article, combustible heat source produced by the method, and smoking article comprising the same - Google Patents
Method for forming combustible heat source for smoking article, combustible heat source produced by the method, and smoking article comprising the same Download PDFInfo
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- CN117479847A CN117479847A CN202280041708.4A CN202280041708A CN117479847A CN 117479847 A CN117479847 A CN 117479847A CN 202280041708 A CN202280041708 A CN 202280041708A CN 117479847 A CN117479847 A CN 117479847A
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- China
- Prior art keywords
- heat source
- combustible heat
- smoking article
- molding
- composition
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- 238000011144 upstream manufacturing Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229940105296 zinc peroxide Drugs 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
- A24B15/165—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes comprising as heat source a carbon fuel or an oxidized or thermally degraded carbonaceous fuel, e.g. carbohydrates, cellulosic material
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/287—Treatment of tobacco products or tobacco substitutes by chemical substances by inorganic substances only
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D1/00—Cigars; Cigarettes
- A24D1/22—Cigarettes with integrated combustible heat sources, e.g. with carbonaceous heat sources
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
- A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention provides a forming method of a combustible heat source, which comprises the following steps: step S1, preparing a combustible heat source composition comprising carbon powder, an organic binder and an ignition accelerator, step S2, treating the combustible heat source composition with glycerol or propylene glycol, and step S3, after treating the combustible heat source composition, compression molding the composition; the compression of step S3 is performed at a strength of 0.5 to 10MPa.
Description
Technical Field
The present invention relates to a method of forming a combustible heat source for a smoking article, a combustible heat source produced by the method and a smoking article comprising the same.
Background
Many smoking articles have recently been proposed that are heated rather than burned. Unlike conventional smoking articles, these non-combustion smoking articles are used by drawing an aerosol generated by heating the smoking article medium without burning the smoking article medium. As one of these types of heated smoking articles, there is a smoking article product that uses a carbon heat source.
Smoking articles employing the carbon heat source generate aerosols by heat transfer from the carbon heat source to a smoking article medium downstream of the carbon heat source.
Unlike general heated electronic smoking articles using dedicated equipment, smoking articles employing carbon heat sources have a similar smoking pattern to conventional smoking articles, and thus may be expected to improve consumer smoking convenience and satisfaction.
Prior art literature
Patent literature
(patent document 1) Korean patent laid-open No. 2020-0030364
Disclosure of Invention
Problems to be solved by the invention
The present invention aims to provide a method of forming a combustible heat source having excellent combustion durability, the combustible heat source and a smoking article comprising the combustible heat source.
Means for solving the problems
The invention provides a molding method of a combustible heat source, which comprises the following steps: step S1, preparing a combustible heat source composition comprising carbon powder, an organic binder and an ignition accelerator, step S2, treating the combustible heat source composition with glycerol or propylene glycol, and step S3, after treating the combustible heat source composition, compression molding the composition; said step S3 is at P O Is carried out under the pressure of said P O Compressive strength P when treated with moisture w From 1.5 to 2 times of (a).
As an embodiment of the present invention, the diameter of the combustible heat source may be 7mm to 8mm and the length may be 10nm to 12nm.
As another embodiment of the present invention, the compressive strength P in the step S3 O May be 0.5MPa to 10MPa.
As still another embodiment of the present invention, the P O May be 1.5MPa to 3.0MPa.
As still another embodiment of the present invention, the P w May be 0.5MPa to 1.5MPa.
As still another embodiment of the present invention, the oil may be 0.8 to 2 parts by weight with respect to 100 parts by weight of the solid content of the combustible heat source composition.
As yet another embodiment of the invention, the combustible heat source may be ignited within 30 seconds and burned for more than 140 seconds.
In addition, the invention provides a combustible heat source formed by the method.
In addition, the present invention provides a smoking article comprising the combustible heat source.
Effects of the invention
The traditional combustible heat source is manufactured by adopting a compression molding method, and has the limitation that the combustion duration is influenced due to the excessive density in the combustion body. Accordingly, an object of the present invention is to provide an optimal molding method for compression molding in a combination of oil and water, wherein a heat source molded by the method of the present invention has characteristics of excellent surface roughness and excellent combustion durability as compared with a conventional heat source.
Drawings
Fig. 1 is a view showing the appearance of a combustible heat source based on oil content according to the present invention.
Fig. 2 is a graph showing the result of confirming surface improvement by pressure adjustment according to the present invention.
Detailed Description
The need for heated electronic smoking articles is increasing. Most of the heating type electronic smoking articles have a device of a device + special rod structure, and as a new type of smoking article, a product having a smoking form similar to that of a general smoking article is developed by applying a carbon-based heat source to the tip of the smoking article. Accordingly, the present invention seeks to develop a combustible heat source that can have a smoking form (ignition, starting point of smoking) similar to that of a typical smoking article.
Existing combustible carbon heat sources are mainly manufactured by compression molding methods. It can be manufactured using powder molding metallurgical methods using only powder, but since the internal density of the combustion body may be excessively large, which may affect the combustion durability, compression molding is preferably performed in a form of applying oil/water mixture. Accordingly, in the present invention, a method of molding a combustible heat source according to oil/water and mixing pressure is proposed.
To this end, the present invention provides a method for molding a combustible heat source, comprising: step S1, preparing a combustible heat source composition comprising carbon powder, an organic binder and an ignition accelerator, step S2, treating the combustible heat source composition with glycerol or propylene glycol, and step S3, after treating the combustible heat source composition, compression molding the composition; said step S3 is at P O Is carried out under the pressure of said P O Compressive strength P when treated with moisture w From 1.5 to 2 times of (a).
In addition, the present invention may provide a combustible heat source formed by the above method and a smoking article comprising the combustible heat source.
The present invention will be described in more detail below.
Step S1 of the present invention is a step of preparing a combustible heat source composition. The combustible heat source composition may include carbon powder, an organic binder, and an ignition improver. In addition, the heat source composition may further include moisture (water). By including moisture in the heat source composition, it can be used as a binder during compression. The content of the above water may be 1% to 1.2% based on the solid content.
Step S2 of the present invention is a step of treating with glycerin or propylene glycol as an oil component to optimize the internal density of the combustible heat source. Preferably, propylene glycol having better combustion persistence may be used. The oil component can improve ignitability when heated, so that combustion can be performed better.
Step S3 of the present invention is a step of compressing the composition and finally molding it into a heat source form.
In the present invention, it was confirmed that the surface roughness of the heat source was greatly improved when a stronger compression pressure was applied at the time of the treatment with the oil content than the case of the treatment with the water content.
Therefore, in step S2, the compressive strength is defined as P O And the compressive strength when treated with moisture was defined as P w . Namely, P as the compressive strength in step S3 of the present invention O Can have compressive strength P when treated with moisture w 1.5 to 2 times the value of (c). For example, if the pressure at the time of treatment with moisture is 1.2MPa, the pressure at the time of treatment with oil may be 2.0MPa.
As another embodiment of the present invention, the P O May be 0.5 to 10MPa, P w May be 0.5 to 1.5MPa. Preferably, P O May be 1.5 to 3.0MPa to produce a heat source having a diameter of 7 to 8mm and a length of 10 to 12nm.
The heat source may be ignited within 30 seconds and the combustion may last for more than 140 seconds. In the present invention, the above heat source has a diameter of 7 to 8mm and a length of 10 to 12nm, and the present invention proposes a preferred method of forming a heat source having the diameter and the length. Heat sources having dimensions within the above ranges have dimensions suitable for use as combustible heat sources for application to smoking articles.
As another embodiment of the present invention, the content of the oil may be 0.8 to 2 parts by weight based on 100 parts by weight of the solid content of the combustible heat source composition. More preferably, when the content of the oil is 1 to 1.5 parts by weight, it has excellent surface roughness and moldability.
Accordingly, the present invention can provide a combustible heat source manufactured by the above method.
The combustible heat sources for smoking articles according to the invention have a carbon content of at least about 50%. For example, the combustible heat source in smoking articles according to the invention may have a combustible carbon-based heat source of at least about 60 dry wt%, or at least about 70 dry wt%, or at least about 80 dry wt%.
As an embodiment of the present invention, one or more adhesives may be combined in the heat source. Preferably, the more than one binder is an organic binder. Suitable organic binders are known to include, but are not limited to, gums (e.g., guar gum), modified celluloses and cellulose derivatives (e.g., methylcellulose, carboxymethylcellulose, hydroxypropyl cellulose, and hydroxypropyl methylcellulose) powders (flour), starches, sugars, vegetable oils, and combinations thereof.
Furthermore, the combustible heat source for a smoking article according to the invention may comprise more than one additive to enhance the performance of the combustible heat source. Suitable additives include additives that promote consolidation (e.g., sintering aids) of the combustible heat source, additives that promote ignition of the combustible heat source (e.g., oxidants such as perchlorate, chlorate, nitrate, peroxide, permanganate, zirconium, combinations thereof, etc.), additives that promote combustion of the combustible heat source (e.g., potassium and potassium salts, such as potassium citrate), and additives that promote decomposition of one or more gases produced by combustion of the combustible heat source (e.g., cuO, fe) 2 O 3 Al and Al 2 O 3 Etc.).
In addition, the combustible heat source may also include an ignition aid. As used herein, the term "ignition aid" is used to refer to a substance that releases one or both of energy and oxygen during ignition of a combustible heat source, wherein the rate at which the substance releases one or both of energy and oxygen is not limited by ambient oxygen diffusion. That is, during ignition of the combustible heat source, the substance releases one or both of energy and oxygen at a rate that is nearly independent of the rate at which ambient oxygen can reach the substance. As used herein, the term "ignition aid" is also used to refer to an elemental metal that releases energy during ignition of a combustible heat source, wherein the elemental metal has an ignition temperature of less than about 500 ℃ and a heat of combustion of at least about 5kJ/g. The ignition aid may be an alkali metal salt of a carboxylic acid (alkali metal citrate (alkali metal citrate salt), alkali metal acetate (alkali metal acetate salt), alkali metal succinate (alkali metal succinate salt), etc.), alkali metal halide (alkali metal halide salt) (alkali metal chloride (alkali metal chloride salt), etc.), alkali metal carbonate (alkali metal carbonate salt), or alkali metal phosphate (alkali metal phosphate salt) that is believed to alter carbon burn.
Examples of suitable oxidizing agents include, but are not limited to: nitrates such as potassium nitrate, calcium nitrate, strontium nitrate, sodium nitrate, barium nitrate, lithium nitrate, aluminum nitrate, and iron nitrate; a nitrite salt; other organic and inorganic nitro compounds; chlorates, such as sodium chlorate and potassium chlorate; perchlorate salts such as sodium perchlorate; chlorite salt; bromates, such as sodium bromate and potassium bromate; perbromate; a bromate salt; borates such as sodium borate and potassium borate; ferrite, such as barium ferrite; a ferrous salt; manganates, such as potassium manganate; permanganate salts such as potassium permanganate; organic peroxides such as benzoyl peroxide and acetone peroxide; inorganic peroxides such as hydrogen peroxide, strontium peroxide, magnesium peroxide, calcium peroxide, barium peroxide, zinc peroxide and lithium peroxide; superoxides, such as potassium and sodium superoxides; iodate; periodate; iodate (iodite); a sulfate; sulfite (sulfate); other sulfoxides (sulfoxide); phosphate; a perphosphate; phosphite (phosphote); phosphonates (phosphonates).
While the ignition and combustion properties of the combustible heat source are advantageously improved, the inclusion of ignition and combustion additives may produce undesirable decomposition and reaction products during use of the smoking article. For example, decomposition of nitrate contained in the combustible heat source assists ignition, thereby forming nitrogen oxides. The inclusion of a combustible heat source in a smoking article according to the invention advantageously substantially prevents or inhibits decomposition and reaction products from entering air inhaled through a smoking article according to the invention during use thereof.
Combustible carbonaceous heat sources for smoking articles according to the invention may be prepared as described in the prior art known to those skilled in the art.
The combustible carbonaceous heat source for smoking articles according to the invention preferably mixes one or more carbonaceous materials with one or more binders and other additives, if included, and pre-forms the mixture into the desired shape. The mixture of the more than one carbonaceous material, the more than one binder and optionally other additives may be preformed into the desired shape using any suitable known ceramic forming method, such as slip casting (slip casting), extrusion, injection molding, compression molding, and the like. In certain preferred embodiments, the mixture is preformed into the desired shape by pressing or extrusion or a combination thereof.
Preferably, a mixture of more than one carbonaceous material, more than one binder and other additives is preformed into an elongated rod (elongated rod). However, it should be understood that mixtures of more than one carbonaceous material, more than one binder, and other additives may be preformed into other desired shapes.
In an embodiment of the present invention, the porosity of the combustible heat source may preferably be from about 20% to about 80%, more preferably from about 20% to 60%. More preferably, the combustible heat source may have a porosity of about 50% to about 70%, for example, as measured by mercury porosimeter (mercury porosimetry) or helium specific gravity meter (helium pycnometry). The desired porosity can be readily achieved during the manufacture of the above heat sources using conventional methods and techniques.
Advantageously, the combustible heat source for a smoking article according to the invention has an apparent density of about 0.6g/cm 3 To about 1g/cm 3 。
Preferably, the combustible heat source has a mass of from about 300mg to about 500mg, more preferably from about 400mg to about 450mg.
Preferably, the length of the combustible heat source is from about 7mm to about 17mm, more preferably from about 7mm to about 15mm, and most preferably from about 7mm to about 13mm.
Preferably, the combustible heat sources have a diameter of from about 5mm to about 9mm, more preferably from about 7mm to about 8mm.
Preferably, the combustible heat source has a substantially uniform diameter. Alternatively, however, the combustible heat source may be tapered such that the diameter of the rear portion of the combustible heat source is greater than the diameter of the front portion thereof. In such embodiments, the rear portion of the combustible heat source has a transverse cross-sectional area of at least about 60% of the transverse cross-sectional area of the smoking article.
Particularly preferably, the combustible heat source is substantially cylindrical. The combustible heat source may be, for example, a substantially circular cross-section cylindrical or tapered cylindrical, or a substantially elliptical cross-section cylindrical or tapered cylindrical.
Thus, the combustible heat source may be used in a smoking article to which the combustible heat source is applied.
The "smoking article" refers to any smokable product or any product that can provide a smoking experience, whether based on tobacco, tobacco derivatives, expanded tobacco (expanded tabacco), reconstituted tobacco (reconstituted tobacco), or tobacco substitutes. For example, the smoking article may refer to a smokable article capable of producing an aerosol, such as a cigarette, cigar (cigar) or cigarillo (cigarillo) or the like.
The smoking article may comprise a combustible heat source, a medium portion, a thermally conductive wrapper and wrapper formed from the above composition, a cooling portion, a filtering portion, etc., and the combustible heat source, the medium portion, the cooling portion and the filtering portion may be arranged in that order based on the length direction, but the order may be freely changed except for the case where the combustible heat source is located upstream. In addition, additional structures may be further included, or one or more of the above structures may be omitted. The smoking article may be, for example, 4mm to 10mm in diameter and 14mm to 29mm in circumference. Further, the length may be 45mm to 100mm.
The media portion may include, for example, at least one of cut tobacco, reconstituted tobacco, smoking article leaf, puffed smoking article, and nicotine extract. The medium portion may include a nicotine (nicotine) component. In addition to the medium portion, an aerosol-generating substance may be included. The aerosol-generating substance may be a polyol; esters of polyhydric alcohols, for example monoacetin, diacetin or triacetin; aliphatic esters of monocarboxylic, dicarboxylic or polycarboxylic acids, for example dimethyl dodecanedioate and dimethyl tetradecanedioate. More specifically, for example, at least one of glycerin, propylene glycol, ethylene glycol, dipropylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and oleyl alcohol may be included. For example, the media portion may include reconstituted tobacco cut filler soaked in glycerin. However, this is merely an example, and the present invention is not necessarily limited to the above conditions.
The length of the media sections may be from 5mm to about 20mm, more preferably from about 8mm to about 12mm. The media portion is wrapped with paper or other wrapper and may be in the form of a plug or member comprising a material capable of releasing volatile compounds in response to heating. As described above, when the media portion is in the form of a plug or component, the entire plug or component, including any wrapper, is considered the media portion.
The cooling portion may include a cooling material. The cooling portion includes a tubular hollow body having an open end, and is capable of cooling the air flow passing through the heat source and the medium portion. The cooling part may be made of a polymer material or a biodegradable polymer material, and may have a cooling function. For example, the cooling portion may be paper, cardboard, plastic (e.g., cellulose acetate), ceramic, and combinations thereof. Furthermore, the cooling portion may comprise a corrugated sheet of a material selected from the group consisting of metal foil, polymeric material and substantially non-porous paper or paperboard. In certain embodiments, the aerosol-cooling element may comprise a corrugated sheet of 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 foil. The length of the cooling portion may be 5mm to about 30mm, more preferably about 8mm to about 25mm, but the length may be freely adjusted in consideration of the temperature of heat generated by the heatable heat source, and the like.
The filter part includes a filter material, and the shape of the filter part is not limited. For example, the filter portion may be a cylindrical rod or a tube rod having a hollow interior. Alternatively, it may be a recessed rod. If the filter portion is made up of a plurality of segments, at least one of the plurality of segments may be manufactured in a different shape. For example, the filter part may include a filter tow including at least one of a polymer, paper, cellulose acetate, activated carbon, and carbon in a fibrous, filament form, or both form, but is not limited thereto. For example, the length of the filter portion may be 5 to 20mm.
In addition, tipping paper or the like wrapping the filter material in contact with the mouth may be included. The tipping paper may have one or more perforations.
The filter portion may be manufactured to produce a fragrance. For example, the perfuming liquid may be sprayed onto the filter material, and individual fibers coated with the perfuming liquid may be inserted into the interior of the filter portion.
The cooling portion and the filtering portion may include an aerosol modifier. For example, one or more of the cooling portion, the filtering portion and the tipping paper of a smoking article according to the invention may comprise one or more aerosol modifiers. Suitable aerosol modifiers include, but are not limited to, fragrances and sensates (chemesthetic agent). The flavour is used to describe any substance that imparts one or both of taste and flavour to an aerosol produced from tobacco material and aerosol-generating substances of a smoking article in use.
Further, the wrap is composed of cellulosic fibers obtained from wood, flax, or other materials, and may encase the media portion, encase the entire smoking article including the media portion, or encase portions other than the filter portion. The base paper (base paper) of the cigarette paper may have a thickness of about 30 μm to about 1000 μm and the base paper may have a basis weight of about 15g/m 2 To about 80g/m 2 。
Smoking articles according to the invention may also include one or more aerosol modifiers downstream that are both flavourants and substance sensates. For example, one or more of the cooling portion and the filtering portion of a smoking article according to the invention may comprise menthol or another flavour providing a cooling substance sensory effect.
Further, a smoking article comprising a combustible heat source may comprise a thermally conductive wrapper surrounding the combustible heat source and the medium portion. The thermally conductive wrapper may completely encapsulate the heat source and the medium portion, or may partially encapsulate the heat source and the medium portion, or may encapsulate a portion of the heat source and the medium portion. The heat conductive wrapper transfers heat generated by a combustible heat source to the tobacco material and comprises: metal foil packages, such as aluminum foil packages, steel packages, iron foil packages, and copper foil packages; and a metal alloy foil package, and is not limited to the above materials, as long as it is a material capable of efficiently transferring heat.
A metal barrier may be formed between the combustible heat source and the media portion. Here, the metal barrier may prevent the combustible heat source portion from directly contacting the medium portion, and may prevent some components generated in the combustible heat source portion from moving to the medium portion.
The thickness of the barrier may be suitably adjusted to achieve good smoking performance. In certain embodiments, the barrier may have a thickness of about 10 microns to about 500 microns. The barrier may comprise one or more metallic materials that are substantially thermally stable and non-combustible at the temperatures attained by the combustible heat source upon ignition and combustion. Suitable materials are known in the art and include, but are not limited to, aluminum, copper, stainless steel, and combinations thereof.
Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, various modifications can be made to the embodiments, and the scope of the present invention is not limited or restricted by the embodiments. All strains, equivalents or alternatives to the embodiments are included within the scope of the claims.
The terminology used in the embodiments is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments. Where not specifically stated in the context, singular expressions include plural meanings. In the present specification, the terms "comprises" and "comprising" and the like are used to denote the presence of a feature, a number, a step, an action, a constituent element, a component, or a combination thereof described in the specification, and do not exclude the possibility that one or more other features, numbers, steps, actions, constituent elements, components, or a combination thereof are present or added.
All terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art without other definitions. The terms commonly used as dictionary definitions are to be understood as meaning consistent with the usual content of the related art and are not to be over-idealized or construed as formal meaning unless expressly so defined herein.
In the description with reference to the drawings, the same reference numerals are given to the same constituent elements regardless of the reference numerals, and the repetitive description thereof will be omitted. In describing the embodiments, when it is judged that detailed description of the related art will unnecessarily obscure the embodiments, detailed description thereof will be omitted.
Examples
1. Manufacturing combustible heat source
A combustible heat source composition including charcoal and an excipient was prepared according to the composition shown in table 1 below. The heat source was prepared in the form of a cylinder having a diameter of 7mm and a height of about 11 mm. The heat source materials were prepared in a mixing ratio and then mixed using an atmospheric mixer (ARE-310 of the company thonky). When mixed, the materials were mixed at 1500RPM for 1 minute each time they were added.
An appropriate amount of water or oil was added to the mixed powder of the weight parts shown in Table 1, and mixed at a speed of 1500RPM for 5 minutes. The mixed sample was divided into about 0.6g and compressed by a press to form a cylinder. At this time, the compression pressure was the conditions shown in table 1. In particular, in the case of examples 2, 3, 5, and 6 in which oil was added, compression was performed at a higher pressure than in the case in which water was added.
The compressed sample was dried in a drying oven at 80 ℃ for 30 minutes.
TABLE 1
2. Confirmation of formability of combustible heat source
The appearance of the manufactured heat source was confirmed as shown in fig. 1. From fig. 1, it was confirmed that the molding property was good when the oil/water content was 1%.
In addition, the results of evaluation according to the following criteria are shown in table 2.
< surface State >
A: good quality
B: the surface has cracks and breakage
C: the surface has a plurality of cracks and damages
< moldability >
A: good forming
B: weak hardness, tackiness or looseness
C: adhered to the container wall and not formed
TABLE 2
| Surface state | Moldability (formability) | |
| Example 1 | A | A |
| Example 2 | A | A |
| Example 3 | A | A |
| Example 4 | A | A |
| Comparative example 1 | C | C |
| Comparative example 2 | C | C |
| Comparative example 3 | C | B |
| Comparative example 4 | C | B |
| Comparative example 5 | B | C |
| Comparative example 6 | B | C |
| Comparative example 7 | C | B |
| Comparative example 8 | C | B |
From the results of the above table 2, it is clear that the surface roughness and moldability are good when the oil content is 1 to 1.5% in examples 1 to 4. In contrast, comparative examples 1 and 2 containing 1% and 1.2% moisture had cracks, breakage and porosity on the surface at the time of molding, and the moldability was slightly inferior; comparative examples 3 and 4 containing 0.5% oil were molded, but had cracks and broken surfaces. Comparative examples 5 and 6 containing 2% oil had poor hardness and had poor molding because they had no surface breakage. In addition, the size was reduced as compared with other heat sources.
As shown in fig. 2, it was confirmed that the surface roughness of example 2, to which a pressure of 2MPa was applied, was significantly improved as compared with comparative example 8, to which a pressure of 1.2MPa was applied.
In comparative examples 7 and 8, in which a pressure of 2.0MPa was applied, surface cracks were confirmed, and when oil was added, the surface roughness was greatly improved by increasing the pressure, as compared with the case of adding water.
3. Confirmation of combustion result of combustible heat source
The manufactured heat source was ignited and then burned, and the observation results are shown in table 3 below.
TABLE 3
From the results of table 3, it was found that good ignitability and combustibility were confirmed when appropriate pressure was applied and the oil content was 1 to 1.5% as in examples 1 to 4. In contrast, in the heat source containing moisture, ignitability was lowered and breakage occurred, whereas comparative examples 3 and 4 containing 0.5% oil content were unable to catch fire or were slow to catch fire, and cracks were developed on the surface. In comparative examples 5 and 6 containing 2% oil, although they were excellent in ignition, their sizes were small, and thus combustion was not stably performed.
In addition, comparative examples 7 and 8, to which a small pressure of 1.2MPa was applied, were quick in ignition, but the surface was broken, and serious smoke was generated.
In summary, the embodiments are described with limited figures, and a person skilled in the art can make various modifications and variations based on the description. For example, the described techniques may be performed in a different order than the described methods, and/or constituent elements of the described systems, structures, devices, circuits, etc. may be combined or combined in a different manner than the described methods, or substituted or replaced with other constituent elements or equivalents, as appropriate.
Other implementations, other embodiments, and equivalents of the claims to be included within the scope of the claims.
Claims (9)
1. A molding method of a combustible heat source is characterized in that,
comprising the following steps:
step S1, preparing a combustible heat source composition comprising carbon powder, an organic binder and an ignition accelerator,
step S2, treating the combustible heat source composition with glycerol or propylene glycol, and
step S3, after the combustible heat source composition is processed, the composition is compressed and molded;
said step S3 is at P O Is carried out under the pressure of (1),
the P is O Compressive strength P when treated with moisture w From 1.5 to 2 times of (a).
2. A method for molding a combustible heat source according to claim 1 wherein,
the diameter of the combustible heat source is 7mm to 8mm, and the length is 10nm to 12nm.
3. A method for molding a combustible heat source according to claim 1 wherein,
the P is O 0.5MPa to 10MPa.
4. A method for molding a combustible heat source according to claim 3 wherein,
the P is O 1.5MPa to 3.0MPa.
5. A method for molding a combustible heat source according to claim 1 wherein,
the P is w 0.5MPa to 1.5MPa.
6. A method for molding a combustible heat source according to claim 1 wherein,
the oil is present in an amount of 0.8 to 2 parts by weight based on 100 parts by weight of the solid content of the combustible heat source composition.
7. A combustible heat source comprising, in combination,
the combustible heat source is molded by the method for molding a combustible heat source according to claim 1.
8. A combustible heat source according to claim 7 wherein,
the combustible heat source is ignited within 30 seconds and the combustion lasts for more than 140 seconds.
9. A smoking article, wherein the smoking article comprises,
comprising a combustible heat source according to claim 7.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2021-0186224 | 2021-12-23 | ||
| KR1020210186224A KR20230096596A (en) | 2021-12-23 | 2021-12-23 | A method of forming a combustible heat source for a smoking article, the combustible heat source manufactured by the method, and a smoking article comprising the same |
| PCT/KR2022/018967 WO2023121024A1 (en) | 2021-12-23 | 2022-11-28 | Method for molding combustible heat source for smoking article, combustible heat source manufactured thereby, and smoking article comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117479847A true CN117479847A (en) | 2024-01-30 |
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ID=86902972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280041708.4A Pending CN117479847A (en) | 2021-12-23 | 2022-11-28 | Method for forming combustible heat source for smoking article, combustible heat source produced by the method, and smoking article comprising the same |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4324340A1 (en) |
| JP (1) | JP2024518951A (en) |
| KR (1) | KR20230096596A (en) |
| CN (1) | CN117479847A (en) |
| WO (1) | WO2023121024A1 (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9775376B2 (en) * | 2010-12-01 | 2017-10-03 | R.J. Reynolds Tobacco Company | Smokeless tobacco pastille and moulding process for forming smokeless tobacco products |
| BR112014033121B1 (en) * | 2012-07-04 | 2021-07-20 | Philip Morris Products S.A. | FUEL HEAT SOURCE, SMOKE ARTICLE, AND FUEL HEAT SOURCE PRODUCTION METHOD |
| KR20180051484A (en) * | 2015-09-11 | 2018-05-16 | 필립모리스 프로덕츠 에스.에이. | Heat source manufacturing method |
| JP6909933B2 (en) * | 2018-08-14 | 2021-07-28 | 株式会社ダイセル | Method for Producing Cellulose Acetate Composition for Thermoforming, Molded Body and Cellulose Acetate Composition for Thermoforming |
| KR102385863B1 (en) | 2018-09-12 | 2022-04-12 | 주식회사 케이티앤지 | Composite heat source, and smoking article comprising the composite hear source |
| WO2020202528A1 (en) * | 2019-04-04 | 2020-10-08 | 日本たばこ産業株式会社 | Method for manufacturing carbon heat source for flavor inhalation tool, composite particles, carbon heat source for flavor inhalation tool, and flavor inhalation tool |
-
2021
- 2021-12-23 KR KR1020210186224A patent/KR20230096596A/en not_active Application Discontinuation
-
2022
- 2022-11-28 JP JP2023569630A patent/JP2024518951A/en active Pending
- 2022-11-28 WO PCT/KR2022/018967 patent/WO2023121024A1/en active Application Filing
- 2022-11-28 CN CN202280041708.4A patent/CN117479847A/en active Pending
- 2022-11-28 EP EP22911660.3A patent/EP4324340A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| KR20230096596A (en) | 2023-06-30 |
| EP4324340A1 (en) | 2024-02-21 |
| JP2024518951A (en) | 2024-05-08 |
| WO2023121024A1 (en) | 2023-06-29 |
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