A spacer for downstream of a smoking segment and a granular cigarette

Abstract

The present application belongs to the technical field of heated cigarettes, and particularly relates to a spacer sheet and a granular cigarette for use downstream of a smoking section. The spacer sheet as a whole is in a sheet shape, and comprises an annular sheet and a central spacer sheet arranged on one side of the annular sheet. The edge of the one side of the central spacer sheet is a region covered by the annular sheet, and the center of the one side of the central spacer sheet is a region not covered by the annular sheet, and a through hole or a gap A is arranged on the region. The present application provides a spacer sheet which is a sheet material, has a smaller volume, and reduces the axial length of the cigarette. In addition, the hardness of the annular sheet is greater than that of the central spacer sheet, the annular sheet can withstand a certain extrusion effect and still support in the cigarette tube. The central spacer sheet has a smaller hardness, and the through hole or the gap A with a smaller size can be easily processed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heated cigarettes, and particularly relates to an isolation sheet and a granular cigarette for use downstream of a smoking section. BACKGROUND

[0002] The granular cigarette is a new type of heated cigarette in recent years, which uses smoking granules instead of tobacco sheet as smoking material. The smoking granules are more evenly heated than tobacco sheet, and the smoke diffuses more smoothly along the gaps between the granules than the HNB cigarette with tobacco sheet. Therefore, the granular cigarette is very popular among consumers.

[0003] The granular cigarette is usually formed by filling smoking granules into a paper tube with a closed end at the distal lip end to form a granular section, and setting a porous solid piece section (or gear piece), a cooling section (which can be a cavity section with holes or filled with cooling material in the cavity section), and a filter section downstream of the granular section. Since the smoking granules are loose and have fluidity, they will flow into the downstream cavity section if not constrained. These smoking granules flowing downstream will not be effectively heated by the heater, affecting the smoking effect. Therefore, all current granular cigarette structures are designed with components to constrain the smoking granules from flowing around, among which the upstream of the granular section is usually constrained by a sealing film, and the downstream is constrained by a porous solid piece section (or gear piece).

[0004] The porous solid piece section is usually made of ceramic or silica gel, and its outer wall is firmly adhered to the inner wall of the paper tube by an adhesive. The center and / or outer periphery have axial through holes or air slots that allow smoke to pass through but do not allow smoking granules to pass through, thereby blocking the smoking granules and transmitting smoke. In addition, when a resistance heating sheet or an electromagnetic heating sheet is inserted into the granular section for central heating, the porous solid piece section can also prevent the smoking granules from moving the porous solid piece section itself downstream under the pushing force of the heating sheet insertion. However, the presence of the porous solid piece section increases the overall length of the cigarette. Therefore, those skilled in the art have always hoped to simplify the structure of the porous solid piece section and reduce the volume of the porous solid piece section.

[0005] To solve the above problems, the present application is proposed. SUMMARY

[0006] In this paper, "for use downstream of a smoking section" does not limit the structure of the "isolation sheet" itself. The isolation sheet in this paper can be used downstream of the smoking section or upstream of the smoking section.

[0007] The first aspect of the present application provides an isolation sheet for use downstream of a smoking section, the isolation sheet being in the shape of a sheet as a whole, comprising: an annular sheet and a central isolation sheet arranged on one side of the annular sheet.

[0008] The edge of one side of the central isolation sheet is covered by the annular sheet, and the center of the side is not covered by the annular sheet, and a through hole or a gap A is arranged on the area.

[0009] Preferably, the other side of the central isolation sheet is also provided with another annular sheet, so that the central isolation sheet is clamped between the two annular sheets.

[0010] Preferably, the central isolation sheet is clamped between the two annular sheets by adhesion.

[0011] Preferably, the isolation sheet is in the shape of a circular sheet or a regular polygonal sheet.

[0012] Preferably, the area not covered by the annular sheet is circular.

[0013] Preferably, the gap A is in the shape of a circular arc or a broken line.

[0014] Preferably, the circular arc is in the shape of "C", and the broken line is in the shape of "Fang".

[0015] Preferably, the isolation sheet is made of one or more of paper, polymer film, and aluminum foil. For example, the central isolation sheet is made of paper, or a composite material of paper and aluminum foil, or a composite material of paper and polymer film. For example, the annular sheet is made of paper, or a composite material of paper and aluminum foil, or a composite material of paper and polymer film.

[0016] The above-mentioned central isolation sheet itself has a certain elasticity.

[0017] Preferably, the annular sheet and the central isolation sheet are both made of paper, and the hardness of the annular sheet is greater than that of the central isolation sheet.

[0018] The second aspect of the present application provides a granular cigarette, which comprises a tobacco pipe, and the tobacco pipe is provided with a smoking section and a isolation sheet according to any one of the first aspect downstream of the smoking section.

[0019] Preferably, the upstream of the smoking section is also blocked by the isolation sheet according to any one of the first aspect.

[0020] Preferably, when the isolation sheet is in the shape of a regular polygonal sheet, the diameter of the circumscribed circle of the regular polygonal sheet is greater than the inner diameter of the tobacco pipe, and there is a gap B between the outer edge of the isolation sheet and the inner wall of the tobacco pipe, which allows the flow of smoke.

[0021] When the isolation sheet is in the shape of a circular sheet, its outer diameter is greater than the inner diameter of the tobacco pipe, so that the isolation sheet and the tobacco pipe are in interference fit.

[0022] When the cigarette is smoked, the direction of the smoke flow in the cigarette is from "upstream" to "downstream".

[0023] When the cigarette is smoked, the end close to the user's lips is called the "proximal end", and the end away from the user's lips is called the "distal end".

[0024] The above technical solutions can be freely combined without contradiction.

[0025] Compared with the prior art, the present application has the following beneficial effects:

[0026] 1. The present application provides an isolation sheet, which is a sheet material, smaller in volume and reducing the axial length of the cigarette. In addition, the annular sheet has a greater hardness than the central isolation sheet, and can withstand a certain amount of extrusion and still support in the tobacco pipe. The central isolation sheet has a smaller hardness, facilitating the processing of a smaller through hole or slit A 12.

[0027] 2. In the preferred technical solution, the isolation sheet material is paper, which is more environmentally friendly than the existing plastic isolation and sealing components, and is conducive to the natural degradation of discarded cigarettes.

[0028] 3. In another aspect of the present application, the isolation sheet can be installed upstream and downstream of the smoking segment in the cigarette. This type of cigarette is particularly suitable for air heating type smoking devices, i.e. the air is first heated to about 300, and then sent to the smoking segment of the cigarette. In this way, there is no need to consider the "smoking material leakage" problem caused by the insertion type heating smoking device, and the heating process can be completed very well.

[0029] 4. In the preferred technical solution, the central isolation sheet 1 can also be provided with an array of fold line type slits A, such as "H" shaped slits A, in the area covered by the annular sheet 2.

[0030] The advantages of the "H" shaped slit A are as follows:

[0031] When punching, the intermediate chip removal process of punching a through hole is saved;

[0032] The "H" shaped slit A can not only utilize the elastic effect of the isolation sheet paper itself to better block the particles, but also open in the proximal end direction under the action of suction force and paper elasticity during smoking, like a parallel combination of one-way valves, which has a good effect on the smooth passage of smoke;

[0033] The width of the "H" shaped slit A (also called square opening) arranged on one side is slightly larger than that of the circular through hole, reducing the manufacturing density of the opening die on the paper die plate, and thus reducing the manufacturing difficulty.

[0034] When the entire isolation sheet material is paper, the manufacturing cost of the paper die plate is also significantly less than the opening die cost of the metal mold of the plastic parts in the prior art.

[0035] 5. In a preferred technical solution, arc-shaped gaps A arranged in an array may also be provided in the area of the central isolation sheet 1 covered by the annular sheet 2, such as "C"-shaped gaps A.

[0036] The "C"-shaped gap A has the above-mentioned advantages of the "匚"-shaped gap A and also has the following characteristics:

[0037] Compared with the "匚"-shaped gap A, the die cutting of the "C"-shaped gap A is simpler. The reason is that for either of the two types of dies, to ensure the blocking effect on the granular material, their actual maximum nominal opening sizes are the same - less than the average diameter of the particles. And the "C"-shaped die is formed in one step, without the problem that the tool is not easy to process at the vertical corner of the square hole die or at the right angle.

[0038] The effect of blocking particles is also better. The reason is that for a square hole with the same side length and a "C"-shaped opening with the same diameter, their maximum nominal opening sizes are the same, but the diagonal dimension of the "匚" is larger than the diameter of the "C"-shaped opening, that is, the actual hole area of the square opening is larger than the maximum actual size of the "C"-shaped hole. Therefore, the blocking effect of the "C"-shaped opening is better.

[0039] 6. In a preferred technical solution, the isolation sheet is in the shape of a regular polygon sheet. The diameter of the circumcircle of the regular polygon is slightly larger than the inner diameter of the smoke pipe. There is a gap B allowing the flue gas to flow between the outer edge of the isolation sheet and the inner wall of the smoke pipe. The advantages of the isolation sheet are as follows: Since the circumcircle of the regular polygon is slightly interference with the inner diameter of the inserted smoke pipe, when the isolation sheet is inserted into the smoke pipe, it is connected by the "point contact" of the slight extrusion deformation of the outer convex endpoints of the regular polygon and the appropriate elastic deformation of the non-contact arc segments between the outer smoke pipe and the regular polygon isolation sheet. This is easier to insert than the "line contact" between the circular isolation sheet and the smoke pipe in the first to fourth embodiments, and the connection is reliable. At the same time, the gap B between the regular polygon isolation sheet and the arc of the smoke pipe can both ventilate and isolate the smoke particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is the front view and the side sectional view of the isolation sheet in the first embodiment.

[0041] Figure 2 It is the front view and the side sectional view of the isolation sheet in the second embodiment.

[0042] Figure 3 It is the front view and the side sectional view of the isolation sheet in the third embodiment.

[0043] Figure 4 It is the front view and the side sectional view of the isolation sheet in the fourth embodiment.

[0044] Figure 5 Fig. 5 is a front view and a side sectional view of a spacer sheet according to a fifth embodiment.

[0045] Figure 6 Fig. 6 is a front view and a side sectional view of a spacer sheet according to a sixth embodiment.

[0046] Figure 7 Fig. 7 is a schematic view of a granular cigarette structure, Figure 7 Fig. 8 is a schematic view of a granular cigarette structure according to a seventh embodiment, Figure 7 Fig. 9 is a schematic view of a granular cigarette structure according to an eighth embodiment.

[0047] LIST OF REFERENCE NUMERALS

[0048] 1: central spacer sheet, 2: ring-shaped sheet, 12: through-hole or slit A, 3: sealing film, I: smoking section, II: spacer sheet, III: cooling section, IV: filter section. DETAILED DESCRIPTION

[0049] The present application will be further described with reference to the following examples.

[0050] It will be appreciated by those skilled in the art that the following examples are given for illustrative purposes only and are not to be construed as limiting the present application. Unless otherwise noted, technical and scientific terms used in the examples have the meanings as commonly understood by one of ordinary skill in the art to which the application pertains. Unless otherwise indicated, all materials and equipment are commercially available or are made using methods known to those skilled in the art.

[0051] It will be understood by those within the art that, in some instances, the singular has been used herein and that, unless otherwise indicated, the use of the singular is only to illustrate the application. It will be further understood that the singular includes the plural unless otherwise indicated. It will be further understood that the use of "one" or "a" or "the" or "said" or "at least one" or "one or more" or "at least one" or "one or more" throughout is taken to mean one or more unless indicated otherwise. It will be understood by those within the art that, when a compound is described herein as being "formed" or "prepared," it is understood that a compound is formed or prepared by any means known to the skilled artisan, unless otherwise indicated. It will be further understood that the use of the term "about" or "approximately" with respect to a particular range or number is meant to encompass minor variations of the recited range or number. It will be further understood that the terms "including," "containing," and "comprising" are used herein to mean that other elements can also be present. It will be further understood that the terms "a," "an," and "the" used to describe a singular element are used herein to mean "one or more" unless otherwise indicated. It will be further understood that the terms "coupled," "connected," and "connected or coupled" are used herein to describe both an indirect connection and a direct connection. It will be further understood that the term "connected or coupled" is used herein to describe both an indirect connection and a direct connection unless otherwise indicated. It will be further understood that the term "coupled" is used herein to describe both an indirect connection and a direct connection unless otherwise indicated. It will be further understood that the term "coupled" is used herein to describe both an indirect connection and a direct connection unless otherwise indicated.

[0052] In the description of the present application, unless otherwise stated, the meaning of "a plurality" is two or more. The orientation or positional relationship indicated by the terms "inner," "upper," "lower," and the like is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0053] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "coupling", "provided with" should be understood in a broad sense, for example, it can be fixedly coupled, or detachably coupled, or integrally coupled; it can be mechanically coupled, or electrically coupled; it can be directly connected, or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application should be understood according to the specific circumstances by those skilled in the art.

[0054] Those skilled in the art can understand that unless otherwise defined, all terms including technical terms and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with those in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless otherwise defined.

[0055] As Figure 1 , a spacer II for the downstream of a smoking segment, the spacer II is in the shape of a whole piece, which comprises: an annular piece 2 and a central spacer 1 bonded on one side of the annular piece 2. "One side" is shown as the back of the annular piece 2 in Figure 1 .

[0056] Wherein, the edge of the side of the central spacer 1 is the area covered by the annular piece 2, and the center of the side is the area not covered by the annular piece 2, which is circular and provided with a through hole or a slit A 12. Figure 1 The through hole is circular. The size of the through hole or the slit A 12 is smaller than the diameter of the smoking particles, so as to block the smoking particles from entering the cooling segment of the cigarette.

[0057] As Figure 1 , in the first embodiment, the spacer II is in the shape of a whole piece. The central spacer 1 is in the shape of a whole piece with the same size as the spacer II. The annular piece 2 is in the shape of a circular ring, and the outer diameter of the annular piece 2 is equal to the outer diameter of the central spacer 1. When the central spacer 1 and the annular piece 2 are combined, the outer edges of the two are completely overlapped.

[0058] The material of the central spacer 1 is thin paper with a weight of 25-100g / m 2 . The material of the annular piece 2 is cardboard with a weight of 200-500g / m 2 . The purpose is that the hardness of the annular piece 2 is greater than that of the central spacer 1, so that when the spacer II as a whole is filled into the tobacco pipe by interference fit, the annular piece 2 can withstand a certain extrusion and still support in the tobacco pipe.

[0059] As Figure 2, in the second implementation manner, "C"-shaped gaps A arranged in an array may further be provided on the area of the central separator 1 covered by the annular sheet 2.

[0060] The advantages of the "C"-shaped gaps A are as follows:

[0061] 1. When punching holes, the intermediate chip removal process of punching through holes is omitted;

[0062] 2. The "C"-shaped gaps A can not only utilize the elastic effect of the separator II paper itself to have a better blocking effect on the blocked particles, but also open towards the proximal lip end under the suction force and the elastic effect of the paper during suction, acting like a one-way valve in a parallel combination, which has a good effect on the smooth passage of the flue gas;

[0063] 3. The width of the "C"-shaped gaps A arranged at intervals on one side is slightly larger than that of the circular through holes, reducing the production density of the punching tool dies on the paper die cutting board, and thus reducing the production difficulty.

[0064] 4. When the entire separator II is made of paper, the production cost of the paper tool die board is significantly lower than the mold opening cost of the plastic parts metal molds in the prior art.

[0065] In the third implementation manner, as Figure 3 shown, "C"-shaped gaps A arranged in an array may further be provided on the area of the central separator 1 covered by the annular sheet 2.

[0066] The "C"-shaped gaps A have the above advantages of the "C"-shaped gaps A, and in addition, they have the following characteristics:

[0067] Compared with the "C"-shaped gaps A, the tool die production of the "C"-shaped gaps A is simpler; the effect of blocking particles is also better;

[0068] In the fourth implementation manner, as Figure 4 shown, a second annular sheet 2 is also bonded to the other side of the central separator 1, so that the central separator 1 is sandwiched between the two annular sheets 2. In this way, the fixation of the central separator 1 is more firm, and the supporting effect of the two annular sheets 2 in the smoke pipe is also better. The diameter of the through hole is d.

[0069] As Figures 5-6 shown, the separator II is integrally in the shape of a regular octagon sheet. The central separator 1 is in the shape of a regular octagon sheet of the same size as the entire separator II. The annular sheet 2 is in the shape of an annular sheet, and the outer edge line of the annulus is a regular octagon and the inner edge line is a circle. When the central separator 1 and the annular sheet 2 are compounded, the outer edges of the two completely overlap. In the fifth implementation manner, Figure 5 in, circular through holes arranged in an array are provided on the area of the central separator 1 covered by the annular sheet 2. In the sixth implementation manner,Figure 6 In the middle, the central isolation plate 1 is provided with an array of "C"-shaped gaps A on the area covered by the annular plate 2.

[0070] The seventh embodiment provides a granular cigarette, which includes a cigarette tube, and the cigarette tube is provided with a smoke-generating section I, an insulating plate II, a cooling section III, and a filter section IV arranged sequentially from the distal lip end to the proximal lip end.

[0071] The distal end of the granular cigarette is sealed with sealing film 3. Of course, other sealing methods can also be used. The separator II is shown in the sixth embodiment. The separator II is generally a regular polygonal sheet, the diameter of the circumscribed circle of the polygon being slightly larger than the inner diameter of the cigarette tube. A gap B, allowing smoke to flow, exists between the outer edge of the separator II and the inner wall of the cigarette tube. When the separator II is installed, one side of the central separator 1 is close to the smoke-generating section I, and one side of the annular sheet 2 is close to the cooling section III. The purpose is that during inhalation, the airflow is from the distal end to the proximal end, and the central separator 1 with the "C"-shaped gap B is blocked by the annular sheet 2 in the airflow direction, preventing it from falling off along the airflow direction.

[0072] The advantage of the isolation plate II shown in the sixth embodiment is that:

[0073] Because the circumscribed circle of the regular polygon is slightly larger than the inner diameter of the inserted smoke tube, when the insulating plate II is inserted into the smoke tube, a "point contact" connection is achieved through the slight compression deformation of the convex end of the regular polygon and the appropriate elastic deformation of the non-contact arc segment between the external smoke tube and the regular polygon insulating plate II. This is easier to insert and more reliable than the "line contact" between the circular insulating plate II and the smoke tube in the first to fourth embodiments. Simultaneously, the gap B between the regular polygon insulating plate II and the arc of the smoke tube allows for both airflow and isolation of smoke particles.

[0074] The eighth embodiment provides a granular cigarette, which includes a cigarette tube. The cigarette tube contains, from the distal lip end to the proximal lip end, a smoke-generating section I, a separator II, a cooling section III, and a filter section IV, arranged sequentially. The separator II is as shown in the third embodiment. The smoke-generating section I contains smoke-generating particles.

[0075] Figure 7 This is a schematic diagram of a granular cigarette structure. Figure 7 a represents the axial main sectional view and A-A sectional view of the granular cigarette in the seventh embodiment. Figure 7 b represents the axial main sectional view and A-A sectional view of the granular cigarette in the eighth embodiment.

Claims

1. A separator for use downstream of a smoke-generating section, characterized in that, The isolation sheet is sheet-shaped and includes: an annular sheet and a central isolation sheet disposed on one side of the annular sheet; The edge of one side of the central isolation plate is the area covered by the annular plate, and the center of this side is the area not covered by the annular plate. A through hole or gap A is provided in this area. The isolation sheet is generally in the shape of a regular polygon. The diameter of the circumscribed circle of the regular polygon is larger than the inner diameter of the flue. When the isolation plate is installed into the flue, the slight extrusion deformation of the convex end of the regular polygon and the point contact connection between the flue and the non-contact arc segment of the isolation plate are used to allow the flue gas to flow. There is a gap B between the outer edge of the isolation plate and the inner wall of the flue. The slit A is "C" shaped; the slit A is configured to open towards the lip end during suction due to the suction force and the elastic action of the central partition.

2. The isolation plate for downstream of the smoke-generating section according to claim 1, characterized in that, Another annular piece is also provided on the other side of the central isolation piece, so that the central isolation piece is sandwiched between the two annular pieces.

3. The isolation plate for downstream of the smoke-generating section according to claim 2, characterized in that, The central isolation plate is sandwiched between the two annular plates by bonding.

4. The isolation plate for downstream of the smoke-generating section according to claim 1, characterized in that, The area not covered by the annular sheet is circular.

5. The isolation plate for downstream of the smoke-generating section according to claim 1, characterized in that, The material of the separator is selected from one or more composite materials of paper, polymer film, and aluminum foil.

6. The isolation plate for downstream of the smoke-generating section according to claim 1, characterized in that, Both the annular sheet and the central separator are made of paper, and the annular sheet is harder than the central separator.

7. A granular cigarette, characterized in that, The granular cigarette includes a cigarette tube, and the cigarette tube is provided with a smoke-generating section and a separator as described in any one of claims 1 to 6 downstream of the smoke-generating section.

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