A granular smoking section sealing piece with a skirt and a granular cigarette

Abstract

The present invention belongs to the technical field of heated cigarettes, and specifically relates to a granular smoking segment sealing member with a skirt and a granular cigarette. The sealing member comprises: a diaphragm (1) and an annular frame (2) arranged on one side of the diaphragm (1); wherein the annular frame (2) comprises: an annular frame body and a plurality of skirts (22); the skirts (22) are arranged on the outer periphery of the annular frame body and are spaced apart, and the skirts (22) are connected to the annular frame body through crease lines (23); the central area of ​​the diaphragm (1) is not covered by the annular frame (2), and the central area of ​​the diaphragm (1) is provided with a plurality of openable valves (15). The present invention provides a granular smoking segment sealing member with a skirt, and the functions of the skirt are: 1. to increase the axial length of the sealing member, thereby making it easier to load into a cigarette pipe and less likely to cause sideways jamming; 2. to enhance the supporting function of the sealing member in the cigarette pipe.

Description

Technical Field

[0001] The invention belongs to the technical field of heated cigarettes, and in particular relates to a granular smoking section blocking piece with a skirt and a granular cigarette. Background Art

[0002] Granular cigarettes are a new type of heated cigarettes in recent years. They use smoke-generating particles instead of tobacco flakes as the smoking material. The smoke-generating particles are heated more evenly than tobacco flakes, and the smoke diffuses along the gaps between the particles more smoothly than tobacco flake-type heated cigarettes. Therefore, they are deeply loved by consumers.

[0003] Granular cigarettes are usually formed by filling smoking particles into a paper tube sealed at the far lip end to form a particle section, and then arranging a porous hardware section (or gear part), a cooling section (which can be a cavity section with holes or a cavity section filled with cooling material), and a filtering section downstream of the particle section. Since the smoking particles are loose and fluid, if they are not restrained, they will flow into the downstream cavity section when the cigarette is placed horizontally. These smoking particles 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 restrain the smoking particles so that they do not flow around. The particles are usually restrained upstream by a sealing film and downstream by a porous hardware section (or gear part).

[0004] The porous fixture segment is usually made of ceramic or silicone, and its outer wall has an interference fit with the inner wall of the paper tube. The center and / or periphery have axial through holes or ventilation grooves that allow smoke to pass through but do not allow smoke particles to pass through, which not only blocks smoke particles but also transmits smoke. In addition, when the resistive heating plate or electromagnetic heating plate is inserted into the particle segment for central heating, the porous fixture segment is firmly adhered to the inner wall of the paper tube, which can also prevent the smoke particles from pushing the porous fixture segment itself downstream under the force of the heating plate insertion. However, the presence of the porous fixture segment increases the overall length of the cigarette. Therefore, those skilled in the art have always hoped to streamline the structure of the porous fixture segment and reduce the volume of the porous fixture segment.

[0005] In order to solve the above problems, the present invention is proposed. Summary of the Invention

[0006] The first aspect of the present invention provides a granular smoking section blocking member with a skirt, the blocking member comprising: a diaphragm 1 and an annular frame 2 arranged on one side of the diaphragm 1;

[0007] The annular frame 2 includes: an annular frame body and a plurality of skirts 22;

[0008] The skirt 22 is arranged on the periphery of the annular frame body and is distributed at intervals. The skirt 22 is connected to the annular frame body through a crease line 23. The central area of ​​the diaphragm 1 is not covered by the annular frame 2. The central area of ​​the diaphragm 1 is provided with a plurality of openable valves 15.

[0009] Preferably, the annular frame 2 is a sheet-like structure.

[0010] Preferably, the sealing member includes an annular base 3, which is arranged on the other side of the diaphragm 1 so that the diaphragm 1 is clamped between the annular base 3 and the annular frame 2. The shape of the annular base 3 is exactly the same as that of the annular frame body, and the annular base 3 is completely overlapped with the annular frame body.

[0011] Preferably, the annular base 3 is a sheet-like structure.

[0012] Preferably, the annular frame body is a circular ring-shaped sheet structure or a regular polygonal sheet structure.

[0013] Preferably, a pre-opened opening 24 is provided at the connection between the annular frame body and the skirt 22 , and the pre-opened opening 24 passes through the fold line 23 , and the opening of the pre-opened opening 24 faces the center of the annular frame body.

[0014] Preferably, the valve 15 is formed by cutting a “C”-shaped slit in the membrane 1 .

[0015] Preferably, the preset opening 24 is formed by cutting a “C”-shaped gap at the connection between the annular frame body and the skirt 22 .

[0016] Preferably, the annular frame body is a regular polygonal sheet structure, and each side of the regular polygon is connected to a skirt 22 .

[0017] Preferably, the diaphragm 1 and the annular frame 2 are both made of paper, and the annular frame 2 is stronger than the diaphragm 1. The diaphragm 1 itself has a certain elasticity.

[0018] A second aspect of the present invention provides a granular cigarette, which includes a cigarette tube, in which a granular smoking segment I and a blocking member according to any one of the first aspects downstream of the granular smoking segment I are provided.

[0019] Preferably, when the annular frame body is in the shape of a regular polygonal sheet, the diameter of the circumscribed circle of the regular polygon is larger than the inner diameter of the smoke pipe, and a gap allowing smoke to flow is present between the outer edge of the annular frame body and the inner wall of the smoke pipe;

[0020] When the annular frame body is in the shape of a disc as a whole, its outer diameter is larger than the inner diameter of the smoke pipe, so that the annular frame body and the smoke pipe are interference-fitted.

[0021] Preferably, a blocking member as described in any one of the first aspects is also provided upstream of the granular smoke-generating section I.

[0022] The above technical solutions can be freely combined under the premise of no contradiction.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention provides a granular smoke-generating segment sealing member with a skirt. The functions of the skirt are: (1) to increase the axial length of the sealing member, thereby facilitating its installation into the smoke pipe and preventing it from tipping over and becoming stuck; (2) to enhance the support provided by the sealing member within the smoke pipe; and (3) to improve the reliability of the valve's fixation within the smoke pipe due to the friction between the skirt and the smoke pipe.

[0025] Furthermore, the annular frame 2 is stronger than the central spacer, allowing it to withstand a certain degree of compression while remaining supported within the smoke pipe. The diaphragm 1 is relatively weak, thin, and flexible, making it easier to machine smaller gaps and facilitating the rebound of the valve 15 to block smoke particles.

[0026] 2. In the preferred technical solution, the annular frame 2, the membrane 1, and the annular base 3 are all made of paper, which is more environmentally friendly than existing plastic isolation and sealing components and is conducive to the natural degradation of discarded cigarettes.

[0027] 3. For the latest "air-heating" smoking devices, which heat incoming air to approximately 300°C before delivering it to the cigarette heating chamber, the blocking members of the present invention, installed upstream and downstream of the smoking section, can effectively deliver the heated air to the cigarette for heating. This eliminates the "smoking material leakage" issue associated with the insertion of heating elements in contact-heating smoking devices, while ensuring the complete heating process.

[0028] 4. The design of the valve 15 with a "C"-shaped slit has the following advantages:

[0029] (1) When drilling, the intermediate chip removal process of drilling through holes is omitted;

[0030] (2) The valve 15 can utilize the elasticity of the diaphragm 1 itself to better block the blocked particles. At the same time, it opens toward the lip end under the action of suction and the elasticity of the diaphragm 1 during inhalation, just like a one-way valve in series or parallel combination, which has a good effect on the smooth passage of smoke.

[0031] (3) The “C”-shaped gap die is simpler to make; there is no problem that the vertical corners of the square hole die are difficult to shape by the tool or the right angles are difficult to process and easy to damage by the tool.

[0032] (4) When the diaphragm 1 is made of paper, the cost of making the paper die plate is significantly lower than the cost of making a metal mold for plastic parts in the prior art.

[0033] 5. In a preferred technical solution, the annular frame body is in the form of a regular polygonal sheet. The diameter of the regular polygon's circumscribed circle is slightly larger than the inner diameter of the smoke tube, and a gap exists between the outer edge of the annular frame body and the inner wall of the smoke tube, allowing smoke to circulate. The advantage of this regular polygonal sheet is that, because the regular polygon's circumscribed circle slightly exceeds the inner diameter of the smoke tube, when the sealing member is installed in the smoke tube, a "point contact" connection is achieved, utilizing slight extrusion deformation of the regular polygon's outer convex end points and appropriate elastic deformation of the non-contact arc segments of the regular polygonal isolation sheet. This makes installation easier than "line contact" between the circular annular frame body and the smoke tube, and provides reliable connection and support. Furthermore, the gap between the regular polygonal annular frame body and the arc of the smoke tube allows for both ventilation and isolation of smoke particles.

[0034] 6. When the blocking member is folded for installation, its main sheet is removed in the axial direction, leaving only a skirt 22. The skirt 22 located upstream of the smoking section inserts into the granular smoking section I, while the skirt 2 located downstream of the smoking section inserts into the cooling section. Therefore, the blocking member does not significantly extend the axial length of the cigarette. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 The diagram shows a front view and a side sectional view of the blocking member in the first embodiment, and the circle shows a partial enlarged view.

[0036] Figure 2 1 and 2 are the front view and side sectional view of the blocking member in the second embodiment, and the circle is a partial enlarged view.

[0037] Figure 3 1 and 2 are the front view and side sectional view of the blocking member in the third embodiment, and the circle is a partial enlarged view.

[0038] Figure 4 This is a schematic diagram of the blocking member in the third embodiment being folded and ready for installation.

[0039] Figure 5 1 and 2 are the main axial cross-sectional view and AA cross-sectional view of the granular cigarette support in the fourth embodiment.

[0040] Figure 6 These are the axial main sectional view, AA sectional view, and B sectional view of the granular cigarette support in the fifth embodiment.

[0041] List of reference numerals:

[0042] 1. Diaphragm, 12. Valve, 2. Ring frame, 21. Notch, 22. Skirt, 23. Crease line, 24. Pre-set port, 3. Ring base, I. Granular smoke section, II. Isolation sheet, III. Cooling section, IV. Filter section, 4. Sealing film. DETAILED DESCRIPTION

[0043] The present invention is described in further detail below with reference to the embodiments.

[0044] Those skilled in the art will understand that the following examples are intended to illustrate the present invention only and should not be construed as limiting the scope of the present invention. Where specific techniques or conditions are not specified in the examples, the techniques or conditions described in the literature in the art or in the product specifications were used. Materials or equipment used without manufacturer identification are commercially available conventional products.

[0045] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we say that an element is "coupled" to another element, it can be directly coupled to the other element, or there may be intermediate elements. In addition, "coupled" as used herein may include wireless coupling.

[0046] In the description of the present invention, unless otherwise specified, "plurality" means two or more. Terms such as "inner," "upper," and "lower" indicating positions or states are based on those shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "provided with" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0048] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by those skilled in the art in the art to which the present invention pertains. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless defined as such herein, will not be interpreted in an idealized or overly formal sense.

[0049] like Figure 1 In the first embodiment, a granular smoking section blocking member with a skirt is provided, and the blocking member comprises: a diaphragm 1 and an annular frame 2 bonded to one side of the diaphragm 1 .

[0050] The annular frame 2 comprises an annular frame body and twelve skirts 22. The twelve skirts 22 are arranged at intervals around the periphery of the annular frame body and connected to the annular frame body via crease lines 23. The skirts 22 are rectangular sheet-like structures. The annular frame body is a regular dodecagonal sheet-like structure, with each side of the regular polygon connected to the short side of a skirt 22.

[0051] The central area of ​​the membrane 1 is not covered by the annular frame 2. A notch 21 in the center of the annular frame 2 exposes the central area of ​​the membrane 1. The central area of ​​the membrane 1 is provided with a plurality of openable valves 15 arranged in an array. These valves 15 are formed by cutting "C"-shaped slits in the membrane 1.

[0052] Diaphragm 1 can be selected from 40 to 100 g / m 2 Thin paper, the ring frame 2 can be selected from 200 to 500 g / m 2 The ring base 3 can be selected from 200 to 500 g / m 2 The strength of the annular frame 2 and the annular base 3 is greater than the strength of the diaphragm 1.

[0053] like Figure 2 The second embodiment is a granular smoke-generating segment sealing member with a skirt. The sealing member comprises: a diaphragm 1, an annular base 3, and an annular frame 2. The diaphragm 1 is bonded between the annular base 3 and the annular frame 2. The annular base 3 is identical in shape to the annular frame body, and the annular base 3 and the annular frame body are completely overlapped. The annular base 3 and the annular frame 2 jointly secure the diaphragm, providing greater stability. The annular base 3 and the annular frame 2 also jointly support the sealing member in the smoke pipe, providing better support.

[0054] like Figures 3-4The third embodiment provides a sealing member specifically designed for slim cigarettes with a diameter of less than 7-8 mm. Based on the first embodiment, the following improvements are made: a pre-opened opening 24 is provided at the junction of the annular frame body and the skirt 22. This opening 24 passes through the center of the fold line 23. The base of the pre-cut edge of the opening 24 is a distance m from the fold line indentation 23, and the opening of the opening 24 faces the center of the annular frame body. Thus, when the skirt 22 is folded along the fold line 23 for installation, the annular frame body and the skirt 22 at the opening 24 open along the pre-cut edge, thereby forming a normally open through-hole. Specifically, the opening 24 is formed by cutting a "C"-shaped slit at the junction of the annular frame body and the skirt 22. Figure 4 This is a schematic diagram of the blocking piece of the third embodiment after being folded and ready for installation.

[0055] like Figure 5 A fourth embodiment provides a granular cigarette comprising a cigarette tube. The cigarette tube comprises a granular smoke-generating section I, a middle blocking section II, a cooling section III, and a filter section IV, arranged in sequence from the distal lip end to the proximal lip end. The distal lip end of the cigarette tube is sealed with a sealing film. The granular smoke-generating section I is filled with smoke-generating particles. The gap between the valve 15 and the pre-placed opening 24 is smaller than the size of the smoke-generating particles to facilitate blocking the smoke-generating particles. The distal lip end of the cigarette tube is sealed with a sealing film 4.

[0056] The central sealing section II utilizes the sealing member described in the third embodiment. The annular frame body is a regular polygonal sheet, the diameter of the circumscribed circle of the regular polygon being larger than the inner diameter of the smoke pipe. A gap exists between the outer edge of the annular frame body and the inner wall of the smoke pipe, allowing smoke to circulate. When the sealing member is installed, one side of the skirt 22 is inserted into the cooling section III. This is intended to ensure that, during inhalation, air flows from the distal lip end to the proximal lip end, and the diaphragm 1 is blocked in the direction of airflow by the annular frame 2, preventing it from falling along the airflow direction.

[0057] Figure 6 The fifth embodiment shows a granular cigarette stick in an axial main cross-sectional view, an A-A cross-sectional view, and a B-axis view. The upstream portion of the granular smoke generating section I is also sealed with the blocking member described in the third embodiment. This cigarette is suitable for hot air heating.

Claims

1. A granular smoke-generating section plugging piece with a skirt, characterized in that: The blocking member comprises: a diaphragm (1) and an annular frame (2) arranged on one side of the diaphragm (1); Wherein, the annular frame (2) comprises: an annular frame body and a plurality of skirts (22); The skirt (22) is arranged on the outer periphery of the annular frame body and is spaced apart. The skirt (22) is connected to the annular frame body via a fold line (23). The central area of ​​the diaphragm (1) is not covered by the annular frame body (2). The central area of ​​the diaphragm (1) is provided with a plurality of openable valves (15). The sealing member comprises an annular base (3), the annular base (3) being arranged on the other side of the diaphragm (1) so that the diaphragm (1) is sandwiched between the annular base (3) and the annular frame (2), the annular base (3) having a shape identical to that of the annular frame body, and the annular base (3) and the annular frame body being arranged to completely overlap; The main body of the annular frame is a regular polygonal sheet structure, and each side of the regular polygon is connected to a skirt (22); The diameter of the regular polygonal circumscribed circle is larger than the inner diameter of the smoke pipe. When the plugging member is installed in the smoke pipe, a gap allowing smoke to circulate exists between the outer edge of the annular frame body and the inner wall of the smoke pipe by utilizing slight extrusion deformation of the outer convex end point of the regular polygon and appropriate elastic deformation of the non-contact arc segment of the regular polygon for point contact connection. The valve (15) is formed by cutting a "C"-shaped slit on the diaphragm (1); the valve (15) is configured to open toward the proximal lip end under the action of suction and the elastic action of the diaphragm (1) during suction; A pre-set opening (24) that can be opened is provided at the connection between the annular frame body and the skirt (22), the pre-set opening (24) passes through the fold line (23), and the opening of the pre-set opening (24) faces the center of the annular frame body; The preset opening (24) is formed by cutting a "C"-shaped gap at the connection between the annular frame body and the skirt (22).

2. The granular smoking section blocking piece with skirt according to claim 1, characterized in that: The diaphragm (1) and the annular frame (2) are both made of paper, and the strength of the annular frame (2) is greater than that of the diaphragm (1).

3. A granular cigarette, characterized in that: The granular cigarette comprises a cigarette tube, in which a granular smoke-generating section (I) and a blocking member according to any one of claims 1 to 2 are arranged downstream of the granular smoke-generating section (I).

4. The granular cigarette according to claim 3, characterized in that: The upstream of the granular smoke generating section (I) is also provided with a blocking member as claimed in any one of claims 1 to 2.

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