Segmented hollow cooling section for heating cigarette and heating cigarette

Abstract

The invention relates to the technical field of cigarettes, and provides a segmented hollow cooling section for heating a cigarette and the heating cigarette, the segmented hollow cooling section for heating the cigarette comprises a perfuming section and a low interception section, and the inner diameter of the perfuming section is larger than that of the low interception section; the perfuming section is of a multi-layer composite structure, the inner layer of the perfuming section is a perfuming layer, the low interception section is of a multi-layer composite structure, the inner layer of the low interception section is a metal sheet layer, and smoke flows to the low interception section from the perfuming section. The perfuming section is arranged in the segmented hollow cooling section, so that the fragrance release amount is larger, and the fragrance release is more uniform; the interception of the aerosol by the hollow cooling section is reduced by utilizing the smooth metal sheet in the low interception section, and the flow velocity of the smoke is increased by utilizing the change of the inner diameters of the perfuming section and the low interception section from large to small, so that the interception of the aerosol by the hollow cooling section is reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of cigarettes, and more specifically, relates to a segmented hollow cooling section for heated cigarettes and a heated cigarette. Background Art

[0002] As people pay more attention to safety and health, the sales of heated cigarettes in foreign markets are growing. At present, heated cigarettes have the problem of low aerosol smoke volume and insufficient aroma. According to research, the aerosol released by the heated tobacco segment of existing heated cigarettes is intercepted by about 57% in the hollow segment, and about 28% in the acetate filter segment, with a total interception rate of about 85%. Only about 15% of the aerosol is released and inhaled by the human body.

[0003] There are two main reasons why aerosols are intercepted when passing through the hollow section during the suction process: 1) condensation deposition: the aerosol cools down, condenses and deposits on the inner wall of the hollow tube; 2) the aerosol is physically intercepted and adsorbed by the inner wall of the hollow tube during the continuous movement and collision.

[0004] In addition, heating cigarettes heats the entire cigarette, and the flavor is heated in the tobacco segment for a long time, which will lead to problems such as uneven release. Summary of the invention

[0005] In view of one of the deficiencies of the above-mentioned prior art, the purpose of the embodiments of the present application is to provide a segmented hollow cooling section for heating cigarettes, which can effectively reduce the retention of aerosol in the hollow section.

[0006] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a segmented hollow cooling section for heating cigarettes, including: a flavoring section and a low retention section, the inner diameter of the flavoring section is larger than the inner diameter of the low retention section; the flavoring section is a multi-layer composite structure, the inner layer is a flavor-carrying layer, the low retention section is a multi-layer composite structure, the inner layer is a metal foil layer, and the smoke flows from the flavoring section to the low retention section.

[0007] In one embodiment, the ratio of the wall thickness of the flavoring section to the outer diameter of the flavoring section is ≤10%, and the ratio of the wall thickness of the low retention section to the outer diameter of the low retention section is ≥14%.

[0008] In one embodiment, the ratio of the length of the fragrance section to the low retention section is 1:1-2:1.

[0009] In one embodiment, the fragrance-carrying layer is a non-woven fabric layer and fragrance is adsorbed on the non-woven fabric layer.

[0010] In one embodiment, the metal sheet layer is an aluminum foil layer.

[0011] In one embodiment, the outer layers of the flavoring section and the low retention section are both modified cellulose paper tubes.

[0012] In one embodiment, the nonwoven fabric of the nonwoven fabric layer has a basis weight of 50-100 g / cm 3 ; Stiffness ≥ 1mN, tensile strength ≥ 12Mpa, the aluminum foil of the aluminum foil layer is 50g / cm 3 ; Stiffness ≥ 0.5mN, tensile strength ≥ 10MPa; The modified cellulose paper of the modified cellulose paper tube has a basis weight of ≥ 50g / cm 3 ; Stiffness ≥ 0.5mN, tensile strength ≥ 8MPa.

[0013] In one embodiment, the flavoring section and the low interception section are bonded with an adhesive, and the adhesive is a cigarette mouthpiece adhesive, wherein the solid content is not less than 50% and the viscosity is not less than 1600 cps.

[0014] In one embodiment, the flavoring section and the low retention section are both rolled in a spiral forming manner.

[0015] Another object of the present application is to provide a heated cigarette, comprising: a smoking section, a acetate fiber bundle section and a segmented hollow cooling section for the heated cigarette as described above, wherein the flavoring section is arranged close to the smoking section, and the low retention section is arranged close to the acetate fiber bundle section.

[0016] The beneficial effects of the segmented hollow cooling section for heated cigarettes and the heated cigarettes provided in the present application are: by arranging a flavoring section in the segmented hollow cooling section, the aroma release amount is larger and the aroma release is more uniform; the smooth metal sheet in the low interception section is used to reduce the interception of aerosols by the hollow cooling section, and the change of the inner diameter of the flavoring section and the low interception section from large to small is used to increase the smoke flow rate and reduce the interception of aerosols by the hollow cooling section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a simplified cross-sectional structural schematic diagram of a heated cigarette provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are: 1. Smoke-generating section; 2. Segmented hollow cooling section; 21. Fragrance-adding section; 22. Low interception section; 23. Fragrance-carrying layer; 24. Metal foil layer; 25. Modified cellulose paper tube; 3. Acetate fiber bundle section. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] like Figure 1 As shown, a heating cigarette provided by an embodiment of the present application is now described. The heating cigarette comprises: a smoking section 1, a segmented hollow cooling section 2 and a acetate fiber bundle section 3, wherein the smoking section 1 and the acetate fiber bundle section 3 are conventional structures, and this embodiment is mainly used to improve the segmented hollow cooling section 2. The segmented hollow cooling section 2 comprises: a flavoring section 21 and a low retention section 22, wherein the flavoring section 21 is arranged close to the smoking section 1, and the low retention section 22 is arranged close to the acetate fiber bundle section 3.

[0025] like Figure 1As shown, in this embodiment, the inner diameter of the aroma section 21 is larger than the inner diameter of the low interception section 22, and the smoke flows from the aroma section 21 to the low interception section 22. The aroma section 21 is a multi-layer composite structure, the outer layer is a support layer, and the inner layer is a fragrance-carrying layer 23. The low interception section 22 is a multi-layer composite structure, the outer layer is a support layer, and the inner layer is a metal sheet layer 24. The surface of the metal sheet layer 24 is smooth. By arranging the aroma section 21 in the segmented air cooling section 2, the aroma release amount is larger and the aroma release is more uniform; the smooth metal sheet layer 24 in the low interception section 22 is used to reduce the interception of the air cooling section to the aerosol, and the change of the inner diameter of the aroma section 21 and the low interception section 22 from large to small increases the smoke flow rate and reduces the interception of the air cooling section to the aerosol.

[0026] Specifically, the ratio of the wall thickness of the flavoring section 21 to the outer diameter of the flavoring section 21 is ≤10%, and the ratio of the wall thickness of the low retention section 22 to the outer diameter of the low retention section 22 is ≥14%. The length ratio of the flavoring section 21 to the low retention section 22 is 1:1-2:1.

[0027] In this embodiment, the aroma-carrying layer 23 is a non-woven fabric layer and the non-woven fabric layer absorbs the aroma, so that when the heated cigarette is heated, the aroma is volatilized. Among them, the metal sheet layer 24 is an aluminum foil layer.

[0028] In this embodiment, the outer layers of the fragrance section 21 and the low interception section 22 are both modified cellulose paper tubes 25. Specifically, the non-woven fabric layer has a basis weight of 50-100 g / cm 3 ; Stiffness ≥ 1mN, tensile strength ≥ 12Mpa, aluminum foil layer weight 50g / cm 3 ; Stiffness ≥ 0.5mN, tensile strength ≥ 10MPa; modified cellulose paper weight of modified cellulose paper tube 25 ≥ 50g / cm 3 ; Stiffness ≥ 0.5mN, tensile strength ≥ 8MPa.

[0029] In this embodiment, the flavoring section 21 and the low interception section 22 are bonded by an adhesive, and the adhesive is a cigarette mouthpiece adhesive, wherein the solid content is not less than 50% and the viscosity is not less than 1600cps.

[0030] In this embodiment, the flavoring section 21 and the low interception section 22 are both rolled in a spiral forming manner.

[0031] In this embodiment, the production process of modified cellulose paper is as follows: broadleaf pulp and coniferous pulp (the mass ratio of the two is 4:6-5:5) are mixed and beaten according to a certain proportion (beating degree is 40°SR-60°SR), and appropriate amounts of wet strength agent and retention agent are added in sequence (the wet strength agent includes polyamide epichlorohydrin resin, and the addition amount is 2-6% of the mass of the pulp; the retention agent selects cationic polyacrylamide, and the addition amount is 0.05-2% of the mass of the pulp) to obtain a composite pulp; the paper is formed and pressed by a long-web papermaking method, and then dried (the drying is carried out by two groups of drying cylinders, wherein the pressure of the rollers in the drying cylinders of the first group of drying cylinders is 80-100kg / cm, the drying cylinder temperature is 110-130°C, and the drying time is 10-20min; the pressure of the rollers in the drying cylinders of the second group of drying cylinders is 40-60kg / cm, the drying cylinder temperature is 80-100°C, and the drying time is 20-30min) and cut to obtain base paper.

[0032] A specific implementation method is provided below: Fragrance section 21: A non-woven fabric material is selected to prepare a hollow section with an outer diameter of 21 mm, wherein the aroma material loaded is a 50% tobacco extract / ethanol solution, and the aroma loading is 0.4 mg / mm. The non-woven fabric is 60 g / cm 3 ; Stiffness 1.2mN, tensile strength 13MPa; Modified cellulose paper weight 60g / cm 3 ; Stiffness not less than 0.5mN, tensile strength not less than 8MPa; Preparation method of modified cellulose paper: after plant fibers (coniferous wood pulp and broadleaf wood pulp, mass ratio of 5:5) are mixed and pulped (beating degree 50°SR), wet strength agent polyamide epichlorohydrin resin (2% of fiber mass) and retention agent cationic polyacrylamide (1% of fiber mass) are added to obtain composite pulp; after forming by long-net papermaking, drying (using two sets of drying cylinders for drying, wherein the pressure of the roller inside the drying cylinder of the first set of drying cylinders is 100kg / cm, the drying cylinder temperature is 130℃, and the drying time is 20min; the pressure of the roller inside the drying cylinder of the second set of drying cylinders is 60kg / cm, the drying cylinder temperature is 100℃, and the drying time is 30min) and slitting, a hollow paper tube base paper is obtained. The inner layer of the fragrance layer and the outer layer of the support layer are compounded by an adhesive to obtain a fragrance section, and the ratio of the wall thickness to the outer diameter of the fragrance section 21 does not exceed 10%.

[0033] Low retention section 22: After the plant fibers (coniferous wood pulp and hardwood wood pulp, mass ratio of 5:5) are mixed and beaten (beating degree 50°SR), wet strength agent polyamide epichlorohydrin resin (2% of fiber mass) and retention agent cationic polyacrylamide (1% of fiber mass) are added to obtain composite pulp; after long-net papermaking and forming, it is dried (two sets of drying cylinders are used for drying, among which the pressure of the rollers in the first set of drying cylinders is 100kg / cm, the drying cylinder temperature is 130℃, and the drying time is 20min; the pressure of the rollers in the second set of drying cylinders is 60kg / cm, the drying cylinder temperature is 100℃, and the drying time is 30min) and cut to obtain hollow paper tube base paper. Aluminum foil is transferred to the surface of the base paper by transfer, and the base paper weight is 60g / cm 3 , total weight after compounding is 110g / cm 3 .

[0034] complex: The flavoring section and the low interception section are compounded into a hollow section, which is then compounded with the smoke-generating section and the acetate fiber bundle section to form a heated cigarette.

[0035] Determination of the interception rate of heated cigarettes: The prepared heated cigarette was smoked puff by puff using a RM20H rotary smoking machine, and the main components intercepted by the hollow cooling section and the acetate fiber bundle section, including nicotine, moisture, and glycerin, were determined by gas chromatography, and the results are shown in Table 1. From the results shown in Table 1, it can be seen that the interception rate of the main components of the heated cigarette aerosol by the hollow cooling section and the acetate fiber bundle section of this embodiment is around 60%, which is about 25% lower than the interception rate of 85% of the existing heated cigarette in the background technology, and the smoke release of the heated cigarette is greatly improved.

[0036]

[0037] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A segmented hollow cooling section for heating cigarettes, characterized in that: include: A fragrance section (21) and a low-retention section (22), wherein the inner diameter of the fragrance section (21) is larger than the inner diameter of the low-retention section (22); the fragrance section (21) is a multi-layer composite structure, the inner layer of which is a fragrance-carrying layer (23); the low-retention section (22) is a multi-layer composite structure, the inner layer of which is a metal sheet layer (24); smoke flows from the fragrance section (21) to the low-retention section (22).

2. The segmented hollow cooling section for heating cigarettes according to claim 1, characterized in that: The ratio of the wall thickness of the fragrance section (21) to the outer diameter of the fragrance section (21) is ≤10%, and the ratio of the wall thickness of the low retention section (22) to the outer diameter of the low retention section (22) is ≥14%.

3. The segmented hollow cooling section for heating cigarettes according to claim 2, characterized in that: The length ratio of the aroma-adding section (21) to the low interception section (22) is 1:1-2:

1.

4. The segmented hollow cooling section for heating cigarettes according to claim 3, characterized in that: The fragrance-carrying layer (23) is a non-woven fabric layer and fragrance is adsorbed on the non-woven fabric layer.

5. The segmented hollow cooling section for heating cigarettes according to claim 4, characterized in that: The metal sheet layer (24) is an aluminum foil layer.

6. The segmented hollow cooling section for heating cigarettes according to any one of claim 5, characterized in that: The outer layers of the fragrance adding section (21) and the low interception section (22) are both modified cellulose paper tubes (25).

7. The segmented hollow cooling section for heating cigarettes according to claim 6, characterized in that: The non-woven fabric of the non-woven fabric layer has a basis weight of 50-100 g / cm 3 ; Stiffness ≥ 1mN, tensile strength ≥ 12Mpa, the aluminum foil of the aluminum foil layer is 50g / cm 3 ; Stiffness ≥ 0.5 mN, tensile strength ≥ 10 MPa; the modified cellulose paper of the modified cellulose paper tube (25) has a basis weight of ≥ 50 g / cm 3 ; Stiffness ≥ 0.5mN, tensile strength ≥ 8MPa.

8. The segmented hollow cooling section for heating cigarettes according to claim 7, characterized in that: The flavoring section (21) and the low interception section (22) are bonded by an adhesive, wherein the adhesive is a cigarette mouthpiece adhesive, wherein the solid content is not less than 50% and the viscosity is not less than 1600cps.

9. The segmented hollow cooling section for heating cigarettes according to claim 1, characterized in that: The fragrance adding section (21) and the low interception section (22) are both rolled in a spiral forming manner.

10. A heated cigarette, characterized in that: include: A smoking section (1), a acetate fiber bundle section (3) and a segmented hollow cooling section for a heated cigarette as described in any one of claims 1 to 9, wherein the flavoring section (21) is arranged close to the smoking section (1), and the low retention section (22) is arranged close to the acetate fiber bundle section (3).

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