Harm-reducing and perfuming paper filter tip without spiral discontinuous groove pricking, preparation method thereof and heated cigarette

Abstract

The invention discloses a spiral discontinuous non-grooved harm-reducing perfuming paper filter tip, a preparation method thereof and a heated cigarette with the spiral discontinuous non-grooved harm-reducing perfuming paper filter tip. The perfuming paper filter tip comprises a harm-reducing perfuming section and an acetate fiber tow section, the harm-reducing and perfuming section is formed by wrapping a functional paper base rod with forming paper, and the total surface area of a through hole accounts for 20-30% of the surface area of the harm-reducing and perfuming section; the functional paper base rod is obtained by folding inclined spiral discontinuous ungrooved embossed paper of which the surface is coated with a harm-reducing and perfuming material, and the groove spacing of the inclined spiral discontinuous ungrooved embossed paper is 6-30% of the length of the harm-reducing and perfuming section. The paper filter rod is endowed with excellent comprehensive performance on the basis of the synergistic effect of a specific groove tying structure and a coating material, the heating cigarette prepared on the basis of the paper filter rod ensures the smoke amount, meanwhile, the release amount of aldehyde compounds in smoke is remarkably reduced, and the smoke is endowed with unique aroma characteristics; the problems that in the prior art, heated cigarettes are low in smoke amount and boring in fragrance are effectively solved.

Description

TECHNICAL FIELD

[0001] The application relates to a harm-reducing and flavor-imparting paper tip stick, in particular to a spiral intermittent non-slotting harm-reducing and flavor-imparting paper tip stick and a preparation method thereof and a heated cigarette, and belongs to the field of cigarette processing and manufacturing. BACKGROUND

[0002] The heated cigarette is heated by a heat source on tobacco sheet or tobacco shreds. The heating temperature can make the tobacco leaf emit tobacco aroma without igniting the tobacco leaf. The nicotine and flavor components are released through volatilization and low-temperature cracking to meet the smoking needs of consumers. Since the tobacco shreds are not combusted but only in a heated state, the harmful components generated by high-temperature combustion and cracking of tobacco are largely avoided, and the exposure risk of consumers is reduced. Compared with other new types of tobacco products, the heated cigarette is most close to the traditional cigarette in terms of sensory quality and smoking method, and therefore attracts the attention of major tobacco companies.

[0003] The total amount of HPHC (Harmful and Potentially Harmful Constituent) released by the heated cigarette is significantly reduced. In July 2020, the heated cigarette IQOS developed by Philip Morris Company passed the exposure reduction MRTP audit of FDA, and once on the market, it occupied an absolute dominant position in the heated cigarette market. However, in terms of carbonyl compounds, the reduction rate of the heated cigarette is far lower than that of other harmful components compared with the combusted cigarette. According to the survey and analysis results of the National Tobacco Quality Supervision and Inspection Center on domestic and foreign heated cigarettes, the release amounts of formaldehyde and acetaldehyde in the IQOS smoke are 12.1 mu g / cig and 145.1 mu g / cig, respectively, and the reduction rates are 40% and 74% compared with the 3R4F cigarette, which is far lower than the total reduction rate of 95% of HPHC reported in the literature. It is worth noting that the heated cigarette introduces glycerol as an atomizing agent, and its dehydration product, hydroxyacetone, is also a carbonyl compound, and reaches a release level of milligrams per cigarette. As known, many carbonyl compounds belong to the harmful substances that are the priority of HPHC, and the release amount in the aerosol of the heated cigarette is still high, which is the most concerned harmful component in the heated cigarette. The aldehyde compounds will stimulate the respiratory system and sensory organs of the human body to different extents during the smoking process of the cigarette, and long-term inhalation will cause serious harm to the human body. Therefore, the research on the release interception technology of aldehyde compounds in the heated cigarette is still highly concerned.

[0004] The research on domestic heated cigarettes started late, and the focus is mainly on the research on the smoking segment material, the smoke analysis research, the filter structure research and the cooling filter rod research. For example, the patent CN201811598460.3 invented a cooling paper-based plug, which is coated with a cooling material on the paper base. However, in the case of a narrow width of the embossed paper, the conventional way of rolling a through slot is prone to insufficient filling, which leads to insufficient internal tension, thereby affecting the bonding strength of the filter rod, and also affecting the roundness index of the filter rod. There is no related report on reducing the aldehyde compounds in the smoke of heated cigarettes or giving the heated cigarettes special aroma. SUMMARY

[0005] In view of the problems existing in the prior art, a first object of the present application is to provide a spiral intermittent unzoned groove harm-reducing and aroma-giving paper plug, which is folded from the embossed paper to form a functional paper base rod, and the functional paper base rod is coated with harm-reducing and aroma-giving materials on the surface to give the paper plug excellent comprehensive performance. The harmful components in the smoke are significantly reduced, and the release amount of the smoke is also ensured, and the draw resistance is reduced.

[0006] A second object of the present application is to provide a preparation method of the spiral intermittent unzoned groove harm-reducing and aroma-giving paper plug, which is formed by pressing the functional paper base with a slanting spiral intermittent roller. The cross section of the roller groove and the roller is a non-circular conic section, which effectively overcomes the technical problem that the existing roller through slot is prone to insufficient filling, leading to insufficient internal tension, and improves the roundness of the paper plug to ensure the process feasibility of subsequent filter rod compounding and cigarette rolling.

[0007] A third object of the present application is to provide a harm-reducing and aroma-giving heated non-combustible cigarette, which utilizes the above-mentioned harm-reducing and aroma-giving paper plug to ensure the smoke amount while significantly reducing the release amount of aldehyde compounds in the smoke, and gives the smoke a unique aroma characteristic. Furthermore, the countersunk cavity region between the harm-reducing and aroma-giving paper plug and the smoking segment in the cigarette can effectively solve the problems of excessive water vapor, small smoke amount and poor taste in the first three puffs of the existing heated non-combustible cigarette, thereby improving the satisfaction and comfort of smoke puffing.

[0008] In order to achieve the above technical purposes, the present application provides a spiral intermittent unzoned groove harm-reducing and aroma-giving paper plug, which comprises a harm-reducing and aroma-giving segment and an acetate fiber tow segment. The harm-reducing and aroma-giving segment is composed of a functional paper base rod wrapped by forming paper, and the total surface area of the through hole accounts for 20-30% of the surface area of the harm-reducing and aroma-giving segment. The functional paper base rod is obtained by folding the embossed paper coated with harm-reducing and aroma-giving materials on the surface. The slot spacing of the slanting spiral intermittent unzoned groove is 6-30% of the length of the harm-reducing and aroma-giving segment.

[0009] The harm-reducing and fragrance-imparting paper tip rod provided by the present application adopts the above structural design, after the smoke enters the harm-reducing and fragrance-imparting rod, the smoke is in full contact with the harm-reducing and aldehyde-reducing material coated thereon, the aldehyde compounds in the smoke are physically and / or chemically adsorbed by the paper-based aldehyde-reducing material, and the release amount of the aldehyde compounds passing through the filter rod is reduced; or the fragrance-imparting material in the filter rod is released when the cigarette smoke with a certain temperature passes through the filter rod, so that the smoke has a special fragrance; in addition, the harm-reducing and fragrance-imparting filter rod has a hole penetrating through both ends thereof, the resistance is small, the smoke is easy to pass through, and the influence on the smoke amount is low.

[0010] As a preferred scheme, the harm-reducing and fragrance-imparting material accounts for 5-30% of the weight of the functional paper-based rod.

[0011] As a preferred scheme, the harm-reducing and fragrance-imparting material is composed of an aldehyde-reducing material and a flavoring agent.

[0012] As a preferred scheme, the aldehyde-reducing material accounts for ≥5% of the weight of the functional paper-based rod. The coating amount of the aldehyde-reducing material used in the present application can be selected according to the needs of harm reduction and fragrance imparting, and factors such as harm reduction effect, smoke adsorption effect and cost are comprehensively considered. The coating amount of the harm-reducing and aldehyde-reducing material must reach a certain amount, so that a more obvious harm-reducing and aldehyde-reducing effect can be obtained. If the coating amount of the harm-reducing and aldehyde-reducing material is less than 5%, the harm-reducing and aldehyde-reducing effect cannot be effectively achieved.

[0013] As a preferred scheme, the aldehyde-reducing material is at least one of polyethyleneimine, polyvinylpyrrolidone and zinc gluconate.

[0014] As a preferred scheme, the flavoring agent is at least one of mint, milk fragrance and tobacco extract.

[0015] As a preferred scheme, the length of the harm-reducing and fragrance-imparting section is 10-50 mm.

[0016] As a preferred scheme, the length of the acetate fiber bundle section is 5-9 mm.

[0017] As a preferred scheme, the paper tip rod is circular, and the circumference is 17-24.2 mm.

[0018] As a preferred scheme, the embossed paper is one of cellulose paper, tallow paper, shaped paper and drawing paper, and the mass area ratio is 30-100 g / m 2 The above embossed paper is used because such paper has a low smoke adsorption capacity and a strong water vapor adsorption capacity, which can effectively reduce the influence on the smoke amount while eliminating the water vapor content in the early stage, and can effectively improve the smoking experience.

[0019] The application also provides a preparation method of the spiral intermittent un-grooved harm-reducing and flavoring paper tip rod.

[0020] As a preferred scheme, the groove of the oblique spiral intermittent roller and the cross section of the roller are non-circular conic section, and the distance between the grooves is 3-5 mm.

[0021] When the paper coated with the harm-reducing and flavoring material is formed into a filter rod, the paper will form a roller groove after being rolled by the roller. The roller groove can reduce the tension of the paper in the folding process on the one hand, and on the other hand, the paper is not easy to completely adhere under the action of the groove, which is beneficial to control the appearance of the filter rod and meet the requirement of low suction resistance. In the case of narrow width of the embossed paper, the conventional way of rolling a through groove is easy to be insufficiently filled, which affects the inner tension and the adhesion strength of the lap joint, and also affects the roundness index of the filter rod. Different from the embossed paper in the prior art, the spiral intermittent roller is designed in the application, and the harm-reducing and flavoring paper has an area of about 5 mm after being embossed, which is not rolled into a groove in an oblique intermittent manner. The unrolled area effectively maintains the inner tension of the filter rod, so that the lap joint is stable and the roundness is good, which ensures the process feasibility of the subsequent filter rod compounding and cigarette rolling.

[0022] As a preferred scheme, the harm-reducing and flavoring segment and the forming paper further comprise a cooling layer.

[0023] As a preferred scheme, the cooling layer is a groove cellulose paper coated with a cooling material; and the cooling material is PEG600.

[0024] The application also provides a harm-reducing and flavoring heat-not-burn cigarette comprising the harm-reducing and flavoring paper tip rod and a smoking segment.

[0025] In the design of the cigarette, the harm-reducing and flavoring segment and the smoking segment can be directly connected. When the high-temperature smoke enters the harm-reducing and flavoring segment from the tobacco segment, the special groove structure and the coating material ratio can effectively realize the flow guiding and temperature reduction of the high-temperature smoke, and the harm-reducing and flavoring filter rod still maintains the original shape without melting and burning. The harm-reducing and flavoring filter rod is different from the three-segment structure design of the iQOS heat-not-burn cigarette filter rod on the market. The IQOS filter rod is provided with a high-temperature resistant flow guiding segment between the smoking segment and the PLA segment. The temperature at the contact position of the smoking segment and the flow guiding segment can reach about 220℃, and the high-temperature resistant effect of the PLA segment has a melting point of about 155-185℃. Directly connecting the PLA segment with the smoking segment will cause complete melting.

[0026] In the embodiment of the present application, for the heat-not-burn cigarette, whether it is a central heating or a surrounding heating mode, a large amount of water vapor is generated in the first three puffs, and the high-temperature water vapor entering the oral cavity condensation will release a large amount of heat, so that the burning feeling of the oral cavity, especially the tongue, is obviously enhanced. The paper harm-reducing and aroma-imparting filter rod has a good water vapor adsorption capacity due to the characteristics of the paper itself, can effectively adsorb water vapor, reduce the temperature of the first few puffs, improve the taste of the first three puffs, and improve the smoking experience.

[0027] As a preferred scheme, the harm-reducing and aroma-imparting paper nozzle rod is further provided with a countersunk cavity region of 1-3 mm between the smoking segment. The countersunk cavity region of the present application is different from the traditional temperature reduction cavity, and the purpose is not to reduce the high-temperature smoke, but to avoid the deformation of the tobacco segment caused by the pushing of the heating sheet when the heat-not-burn cigarette is inserted into the central heating device.

[0028] Compared with the prior art, the technical scheme of the present application has the beneficial technical effects that:

[0029] 1) The harm-reducing and aroma-imparting paper nozzle rod provided by the present application adopts a functional paper base rod formed by folding slanting spiral intermittent notched grooved embossed paper, and the excellent comprehensive performance of the paper nozzle rod is given by the synergistic effect of the harm-reducing and aroma-imparting material coated on the surface of the functional paper base rod, which significantly reduces the harmful components in the smoke while ensuring the release amount of the smoke and reducing the suction resistance.

[0030] 2) In the preparation method provided by the present application, the functional paper base is formed by pressing with a slanting spiral intermittent roller. The cross section of the roller groove and the roller is a non-circular conic curve section, which effectively overcomes the technical problem that the existing roller groove is easy to be filled insufficiently, resulting in insufficient internal tension, and improves the roundness of the paper nozzle rod, ensuring the process feasibility of subsequent filter rod compounding and cigarette rolling.

[0031] 3) The harm-reducing and aroma-imparting heat-not-burn cigarette provided by the present application utilizes the above harm-reducing and aroma-imparting paper nozzle rod, which not only ensures the amount of smoke and mist, but also significantly reduces the release amount of aldehyde compounds in the smoke, and gives the smoke a unique aroma characteristic. Further, the countersunk cavity region between the harm-reducing and aroma-imparting paper nozzle rod and the smoking segment in the cigarette can effectively solve the problems of excessive water vapor, small amount of smoke and mist, and poor taste in the first three puffs of the existing heat-not-burn cigarette, thereby improving the satisfaction and comfort of the smoke suction. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The harm-reducing and aroma-imparting filter rod heat-not-burn cigarette;

[0033] Figure 2 The figure is a schematic diagram of the spiral intermittent roller described in Embodiment 1 of the present application.

[0034] Figure 3 The figure is a grooved paper base diagram of the spiral intermittent roller described in Embodiment 1 of the present application.

[0035] Figure 4 This is a physical image of the harm-reducing and hygroscopic filter rod described in Embodiment 1 of the present invention;

[0036] Figure 5 The submerged filter rod with reduced toxicity as described in Embodiment 1 of the present invention;

[0037] Figure 6 This is a structural diagram of the heated cigarette made with the submerged, harm-reducing, and hygroscopic filter rod described in Embodiment 1 of the present invention.

[0038] Figure 7 The graphs show the temperature of the smoke from each puff of the heated cigarette obtained in Embodiment 1 and Comparative Example 1 of the present invention. Detailed Implementation

[0039] The present invention will be described in detail below with reference to embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0040] Example 1

[0041] This embodiment provides a heated non-combustible cigarette, such as Figure 1 As shown, the filter includes a tow section, a harm-reducing and fragrance-enhancing section, and a smoke-generating section connected in sequence. The tow section consists of a special cellulose acetate filter rod with low smoke interception. The harm-reducing and fragrance-enhancing section is formed by wrapping the harm-reducing and fragrance-enhancing rod with forming paper. The harm-reducing and fragrance-enhancing rod is mainly formed by wrapping a grooved cellulose paper coated with a cooling material with an internally folded paper base coated with formaldehyde-reducing and / or fragrance-enhancing materials. During the filter rod forming process, the cellulose paper coated with harm-reducing and fragrance-enhancing materials is first cut into the target size, and the cut paper base is then passed through a spiral intermittent roller (see...). Figure 2 As shown), after embossing, the functional paper base will have an area of ​​about 5mm with diagonally discontinuous un-extruded grooves (see...). Figure 3 As shown in the diagram, this unrolled area effectively maintains the internal tension of the filter rod, resulting in a stable overlap and good roundness. Before entering the smoking gun, the paper base is pre-folded and formed step by step by two pairs of pressure rollers. After the pre-folded embossed paper exits the double pressure rollers, a belt driven by a motor pulley pulls the folded pre-embossed paper to reduce slippage. At the same time, the pulley can squeeze and fix the folded embossed paper to a certain extent, thereby improving the uniformity and roundness of the pores. In order to improve the problems of poor roundness and low hardness of the filter rod and improve the production and forming effect of the harm-reducing and aroma-enhancing filter rod, a layer of grooved cellulose paper coated with cooling material is used. After being pressed online by the pressure rollers, it forms a grooved structure to wrap the folded coated paper base exiting the double pressure rollers, and then is wrapped with ordinary forming paper on the outside.

[0042] The reduced-harm fragrance stick has multiple holes penetrating both ends of the reduced-harm fragrance stick, and the total specific surface area of ​​the multiple holes accounts for 20%-30% of the surface area of ​​the reduced-harm fragrance paper base.

[0043] The paper is a cellulose paper with a certain absorbency. The basis weight of the paper is 80 g / m³. 2 .

[0044] The cooling material is PEG600.

[0045] The cooling material is applied at a rate of 15% of the total weight of the paper.

[0046] The paper base coated with the harm-reducing and fragrance-enhancing material polyethyleneimine accounts for 15% of the total weight of the paper.

[0047] The length of the filament section is 7 mm, the length of the harm-reducing and fragrance-enhancing section is 27 mm, and the length of the smoke-generating section is 12 mm.

[0048] Comparative Example 1

[0049] This comparative example is exactly the same as Example 1, except that the amount of cooling material coating is changed to 0, the amount of harm-reducing and alkali-enhancing material coating is changed to 0, and other conditions remain unchanged, to prepare the cigarette of Comparative Example 1.

[0050] Experimental test data show that the amount of aldehyde compounds released from the smoke from the cigarette provided in Example 1, using a center-heated method, is shown in Table 1, and the aldehyde compound reduction rate is shown in Table 2, with a total aldehyde compound reduction of 47.79%. The smoke temperatures of Comparative Example 1 and Example 1 samples were measured by puffing through a center-heated smoking device. Figure 7 As shown, the highest smoke temperature of cigarettes coated with polyethyleneimine cellulose paper was 4.9℃ lower than that of the cigarette sample obtained in Comparative Example 1. The temperature of the cigarette tipping paper was measured during each puff using a self-assembled thermocouple device to examine the thermal sensation on the lips. The highest temperature of the cellulose paper-based polyethyleneimine tipping paper was 3.2℃ lower than that of the cigarette sample in Comparative Example 1.

[0051] Example 2

[0052] This embodiment is exactly the same as Example 1, except that the coating amount of the cooling material is changed to 20%, and the coating amount of the harm-reducing and flavoring paper base with the harm-reducing material polyethyleneimine is changed to 20%. Experimental test data show that when the harm-reducing cellulose paper base is coated with 20% polyethyleneimine, the total release of aldehyde compounds in the smoke is reduced by 54.82% compared with Comparative Example 1. The highest temperature of the cigarette smoke from the polyethyleneimine-coated cellulose paper base is 6.8℃ lower than the highest temperature of the cigarette sample in Comparative Example 1.

[0053] Example 3

[0054] The embodiment is completely same as example 1, the difference is that the coating amount of the harm-reducing and flavor-imparting paper base coating harm-reducing material polyethylene imine is changed to 10%, the filter rod structure adopts a countersunk head process filter rod, the countersunk cavity section is 2 mm, the cellulose paper base section is 25 mm, and the tow section is 7 mm. Experimental test data show that when the harm-reducing cellulose paper base coating polyethylene imine is 10%, the total release amount of smoke aldehyde compounds is reduced by 32.03% compared with the sample of comparative example 1. The highest temperature of the smoke of the cellulose paper base coating polyethylene imine cigarette is 5.4 ℃ lower than that of the sample of comparative example 1.

[0055] Example 4

[0056] The embodiment is completely same as example 1, the difference is that the harm-reducing material is polyethylene imine and polyvinylpyrrolidone, the ratio of which is 1:1, and the coating amount is still 15%. Experimental test data show that when the harm-reducing cellulose paper base coating polyethylene imine and polyvinylpyrrolidone compound material is 15%, the total release amount of smoke aldehyde compounds is reduced by 35.27% compared with the sample of comparative example 1. The highest temperature of the smoke of the cellulose paper base coating polyethylene imine and polyvinylpyrrolidone compound material cigarette is 4.3 ℃ lower than that of the sample of comparative example 1.

[0057] Example 5

[0058] The embodiment is completely same as example 1, the difference is that the cellulose paper is changed to drawing paper, and the coating amount of the paper base coating harm-reducing material polyethylene imine is changed to 10%. Experimental test data show that when the harm-reducing drawing paper base coating polyethylene imine is 10%, the total release amount of smoke aldehyde compounds is reduced by 28.17% compared with the sample of comparative example 1. The highest temperature of the smoke of the drawing paper base coating polyethylene imine cigarette is 6.5 ℃ lower than that of the sample of comparative example 1.

[0059] Example 6

[0060] The embodiment is completely same as example 1, the difference is that the harm-reducing and flavor-imparting material coated on the drawing paper base is changed to a mixture of polyethylene imine and mint (polyethylene imine:mint = 4:1), and the coating amount of the harm-reducing and flavor-imparting material is still 10%. The total release amount of smoke aldehyde compounds is reduced by 24.13% compared with the sample of comparative example 1. The highest temperature of the smoke of the drawing paper base coating polyethylene imine and mint cigarette is 5.8 ℃ lower than that of the sample of comparative example 1, and the smoke has a special mint flavor.

[0061] Example 7

[0062] The embodiment is identical with example 1, the difference is that the harmfulness reducing and property imparting material coated on the cellulose paper base is changed into a mixture of polyethylene imine and milk flavor (polyethylene imine:milk flavor = 5:1), the harmfulness reducing and property imparting material coating amount is still 15%, the total release amount of aldehyde compounds in smoke is reduced by 42.43% compared with the sample of comparative example 1, the highest temperature of cigarette smoke of the cellulose paper base cigarette coated with polyethylene imine and milk flavor is 4.7℃ lower than that of the sample of comparative example 1, and the smoke has special milk flavor.

[0063] Example 8

[0064] The embodiment is identical with example 1, the difference is that the cellulose paper base is changed into a formed paper, a mixture of polyethylene imine, polyvinyl pyrrolidone, zinc gluconate and tobacco extract (polyethylene imine:polyvinyl pyrrolidone:zinc gluconate = 5:5:2:1) is coated on the formed paper base, the harmfulness reducing and property imparting material coating amount is still 10%, the total release amount of aldehyde compounds in smoke is reduced by 31.03% compared with the sample of comparative example 1, the highest temperature of cigarette smoke of the formed paper base cigarette coated with the harmfulness reducing and property imparting compound material is 6.7℃ lower than that of the sample of comparative example 1, and the smoke has special tobacco extract aroma.

[0065] Table 1

[0066]

[0067] Table 2

[0068]

Claims

1. A spiral discontinuous ungrooved, harm-reducing, fragrance-enhancing paper nozzle, characterized in that: It includes a harm-reducing fragrance segment and an acetate fiber bundle segment; the harm-reducing fragrance segment is composed of a functional paper base rod wrapped with a forming paper, and the total surface area of ​​its through holes accounts for 20-30% of the surface area of ​​the harm-reducing fragrance segment; the functional paper base rod is obtained by folding oblique spiral discontinuous ungrooved embossed paper coated with harm-reducing fragrance material on the surface, and the groove spacing of the oblique spiral discontinuous ungrooved paper is 6-30% of the length of the harm-reducing fragrance segment.

2. The spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle stick according to claim 1, characterized in that: The harm-reducing fragrance material accounts for 5-30% of the weight of the functional paper base rod; the harm-reducing fragrance material is composed of aldehyde-reducing materials and fragrances; the aldehyde-reducing materials account for ≥5% of the weight of the functional paper base rod.

3. The spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle stick according to claim 2, characterized in that: The aldehyde-reducing material is at least one of polyethyleneimine, polyvinylpyrrolidone, and zinc gluconate; the fragrance is at least one of peppermint, milk fragrance, and tobacco extract.

4. The spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle stick according to claim 1, characterized in that: The length of the harm-reducing and fragrance-enhancing segment is 10–50 mm; the length of the cellulose acetate filament segment is 5–9 mm; and the paper nozzle is circular with a circumference of 17–24.2 mm.

5. The spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle stick according to claim 1, characterized in that: The embossed paper is one of cellulose paper, greaseproof paper, forming paper, and tracing paper, and its mass-to-area ratio is 30–100 g / m². 2 .

6. A method for preparing a spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle as described in any one of claims 1 to 5, characterized in that: After the harm-reducing and fragrance-enhancing material is evenly coated on the surface of the embossed paper, it is rolled by the inclined spiral intermittent rollers. Then, the paper base is pre-folded step by step by two pairs of pressure rollers to obtain the harm-reducing and fragrance-enhancing section. The harm-reducing and fragrance-enhancing section is wrapped and shaped by forming paper, and one end is filled with cellulose acetate filament bundles to obtain the final product.

7. The method for preparing a spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle rod according to claim 6, characterized in that: The grooves and cross-sections of the oblique spiral intermittent roll are non-circular conical curves, and the distance between the grooves is 3-5 mm.

8. The method for preparing a spiral discontinuous ungrooved, harm-reducing, and fragrance-enhancing paper nozzle according to claim 6, characterized in that: The reduced-harm fragrance segment and the forming paper also include a cooling layer; the cooling layer is a grooved cellulose paper coated with a cooling material; the cooling material is PEG600.

9. A harm-reducing, aroma-enhancing, heat-resistant, non-combustible cigarette, characterized in that: It includes the harm-reducing and fragrance-enhancing paper mouthpiece and the smoke-generating section as described in any one of claims 1 to 5; the length of the smoke-generating section is 10 to 70 mm.

10. A harm-reducing, aroma-enhancing, heat-resistant non-combustible cigarette according to claim 8, characterized in that: The harm-reducing and fragrance-enhancing paper nozzle rod and the smoke-generating section are further provided with a 1-3 mm recessed cavity area.

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