A skirted valve for a granular smoking segment upstream of a granular cigarette

Abstract

The present application belongs to the technical field of heated cigarettes, and particularly relates to a skirted valve for upstream of a granular smoking segment and a granular cigarette. The valve comprises a diaphragm and a frame (2). The frame (2) comprises a frame body and a plurality of skirts (22) arranged at the periphery of the frame body and spaced from each other, the skirts (22) being connected to the frame body through a crease line (23). The frame body is provided with a frame opening (21) at the center. The diaphragm (1) is provided with mutually perpendicular main incisions (11) at the center. The present application provides a skirted valve for upstream of a granular smoking segment. The skirts have the following functions: (1) increasing the axial length of the blocking member, so that the blocking member is easily filled into the smoke pipe and is not prone to lateral turning and jamming; (2) enhancing the supporting effect of the blocking member in the smoke pipe; and (3) increasing the friction between the skirts and the smoke pipe and improving the reliability of the valve fixed in front of the cigarette.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of heated cigarettes, and particularly relates to a skirted valve for upstream of a granular smoking segment and a granular cigarette. BACKGROUND

[0002] The existing granular heat-not-burn product is a complete cigarette, which is formed by a hollow paper tube, a high-air-permeability paper adhered to the front end of the paper tube, granular smoking material loaded into the paper tube, an isolation plug used for preventing the granular smoking material from moving axially in the paper tube, a temperature-reducing segment used for reducing the temperature of the heated smoke along the length direction of the paper tube, and a filter material segment loaded into the end of the paper tube for further filtering the smoke, thereby forming a complete granular cigarette. However, when the cigarette is heated, a heating element such as a heating needle or a heating sheet needs to pierce the high-air-permeability paper adhered to the front end of the paper tube, and the high-air-permeability paper is easily torn and cannot effectively block the granular smoking material. In addition, the high-air-permeability paper is not easy to adhere to the paper tube or the reliability of the adhered high-air-permeability paper is not high during the process of manufacturing.

[0003] In addition, in the existing granular heat-not-burn product, there are many kinds of raw and auxiliary materials such as paper film, smoking granules, plastic isolation piece, paper tube, and filter material. Therefore, although special equipment is used for manufacturing, the operation of the equipment is complex. In addition, due to the variety of cigarette raw materials and the large difference in the properties of the raw materials, some parts of the cigarette cannot be quickly and naturally degraded after use. In addition, the production efficiency of the special equipment is not high, and the equipment investment is large, which is not suitable for all types of investors.

[0004] In order to reduce the dependence on high-priced and low-efficiency cigarette manufacturing equipment as much as possible and to fully and naturally degrade each cigarette, and to solve the problem of tearing of the high-air-permeability paper, the present application is made. SUMMARY

[0005] In this paper, the skirted valve for upstream of a granular smoking segment does not limit the skirted valve of the present application.

[0006] The skirted valve in this paper can be used for upstream of a granular smoking segment or downstream of a granular smoking segment.

[0007] The first aspect of the present application provides a skirted valve for upstream of a granular smoking segment, the valve comprising: a film sheet 1 and a frame 2 arranged on one side of the film sheet 1.

[0008] The frame 2 comprises a frame body and a plurality of skirts 22 arranged on the periphery of the frame body and spaced from each other, and the skirts 22 are connected to the frame body by a crease line 23.

[0009] The frame body is centrally provided with a frame opening 21.

[0010] The diaphragm 1 is centrally provided with mutually perpendicular main cuts 11, which are located in the center of the frame opening 21.

[0011] The strength of the frame 2 is greater than that of the diaphragm 1.

[0012] Preferably, the diaphragm 1 can be selected from 40-100 g / m 2 of tissue paper, and the frame 2 can be selected from 200-500 g / m 2 of cardboard.

[0013] Preferably, the frame body is in the shape of a circular sheet, and the frame body edge is spaced apart by a concave portion 24, and at least two adjacent skirt edges 22 are spaced apart by the concave portion 24. The concave portion 24 can be used for ventilation.

[0014] Of course, the concave portion 24 can also not be provided between some adjacent skirt edges 22.

[0015] Preferably, the frame body is in the shape of a regular polygon sheet, and one skirt edge 22 is connected to each edge of the regular polygon.

[0016] Preferably, the edges of the frame opening 21 are all smooth curves, and the frame opening 21 is in the shape of a "cross". The smooth curves can make the edges of the frame opening 21 bear force more evenly, preventing tearing.

[0017] Preferably, in the center of the main cut 11, a central cut 12 is provided at an angle to the main cut 11, and the central cut 12 is at least one that passes through the center of the main cut 11.

[0018] Preferably, the central cut 12 is two that are cross-shaped, and the central cut 12 and the main cut 11 together form a "rice" shape.

[0019] Preferably, the main cut 11 is provided with a plurality of vertical cuts 13 that communicate therewith.

[0020] Preferably, the end of the main cut 11 is provided with an end cut 14 that communicates therewith.

[0021] The above cuts are slits.

[0022] Preferably, the valve further comprises a support frame 3, which is provided on the other side of the diaphragm 1 and completely overlaps the frame body, and the support frame 3 is provided with an opening that is the same as the frame opening 21.

[0023] Preferably, the valve material is selected from one or more of the following: paper, polymer film, aluminum foil. For example, the diaphragm 1 is made of paper, or paper and aluminum foil, or paper and polymer film. For example, the support frame 3 or the frame 2 is made of paper, or paper and aluminum foil, or paper and polymer film.

[0024] The diaphragm 1 itself has a certain elasticity.

[0025] The second aspect of the application provides a granular cigarette, which comprises a tobacco pipe, a granular smoking segment arranged in the tobacco pipe, and the valve according to any one of the first aspect.

[0026] Preferably, when the frame body of the valve is a regular polygonal sheet, the diameter of the circumscribed circle of the regular polygon is greater than the inner diameter of the tobacco pipe, and there is a gap between the outer edge of the frame body and the inner wall of the tobacco pipe to allow the flow of smoke.

[0027] When the valve is a circular sheet as a whole, the outer diameter is greater than the inner diameter of the tobacco pipe, so that the frame body is in interference fit with the tobacco pipe.

[0028] When the cigarette is smoked, the direction of the smoke flow in the cigarette is from "upstream" to "downstream".

[0029] 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".

[0030] The above technical solutions can be freely combined without contradiction.

[0031] Compared with the prior art, the application has the following beneficial effects:

[0032] 1. The application provides a skirted valve for the upstream of a granular smoking segment. The skirt has the following functions: (1) increasing the axial length of the sealing member, thus facilitating loading into the tobacco pipe and reducing the risk of side flipping and jamming; (2) enhancing the support of the sealing member in the tobacco pipe; (3) due to the friction between the skirt and the tobacco pipe, the reliability of the valve fixed in the tobacco pipe is improved; (4) facilitating manual assembly of the cigarette and reducing the dependence on cigarette loading equipment, further reducing the access threshold of the product; (5) because the heating effect of a central heating type smoking device on the smoking material close to the tobacco pipe is not obvious, if factors such as cigarette shaking during smoking are not considered, uneven heating is a high-probability event. Therefore, the skirt is added to the tobacco pipe, and the skirt occupies part of the space in the tobacco pipe close to the tobacco pipe, which reduces the loading amount of the smoking material, but has little effect on the smoking amount.

[0033] The main cut 11 is used for inserting the central heating element, and after the central heating element is pulled out, the part of the film 1 at the main cut 11 can restore to the original state or a state close to the original state by its own elasticity, still blocking the particulate smoking material in the cigarette, preventing pollution of the smoking tool or the use environment.

[0034] 2、In the preferred technical solution, the valve material is paper, which is more environmentally friendly than the existing plastic isolation blocking piece, and is conducive to the natural degradation of the waste cigarette.

[0035] 3、In the preferred technical solution, in addition to the main cut 11, the valve of the application is also designed with a central cut 12, a vertical cut 13, and an end cut 14. The combination of the above cuts has the following effects: (1) When the heating smoking tool of the cigarette matched with the application is a sheet-type heating element or a cross-type heating element, the film 1 can adaptively deform along the direction of the central cut 12, the vertical cut 13, and the end cut 14 by its own natural elasticity when the heating element is inserted, and the film 1 is not easy to be torn; (2) After the sheet-type heating element or the cross-type heating element is pulled out, the film 1 can restore to the original state or a state close to the original state by its own elasticity, still blocking the particulate smoking material in the cigarette, preventing pollution of the smoking tool or the use environment; (3) The above cuts are not completely sealed, so air is allowed to flow in during smoking.

[0036] 4、The purpose of setting the frame opening on the frame is: for cigarettes with smaller diameters, the "cross" frame opening, especially this "cross" structure, can strengthen the radial strength of the frame body, preventing the frame body and the film 1 from being torn; it has a relative guiding effect on the sheet-type heating element, so that it can be accurately inserted into the main cut 11.

[0037] 5、In the preferred technical solution, by selecting the amount and size of the concave part 24 between the skirt 22, the air permeability and cigarette draw resistance of the valve can be appropriately adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is the front view and A-A cross-sectional view of the valve in the first embodiment, and the circle is a local enlarged view.

[0039] Figure 2 It is the front view and A-A cross-sectional view of the valve in the second embodiment, and the circle is a local enlarged view.

[0040] Figure 3 It is a schematic diagram of the valve folded in the second embodiment before installation.

[0041] Figure 4 It is the front view and A-A cross-sectional view of the valve in the third embodiment, and the circle is a local enlarged view.

[0042] Figure 5 is a front view and an A-A sectional view of the valve in the fourth embodiment, and the circle is a partial enlarged view.

[0043] Figure 6 is an axial main sectional view and a left view of the granular cigarette in the fifth embodiment.

[0044] LIST OF REFERENCE NUMERALS

[0045] 1, diaphragm, 11, main cut, 12, center cut, 13, vertical cut, 14, end cut, 2, frame, 21, frame opening, 22, skirt, 23, crease line, 24, inner recess, 3, support frame body, I, granular smoking segment, II, middle blocking member, III, cooling segment, IV, filter segment. DETAILED DESCRIPTION

[0046] The application will be further described in conjunction with the examples.

[0047] Those skilled in the art will understand that the following examples are intended to be illustrative only and are not intended to limit the scope of the present application. Unless otherwise indicated, in the examples, technical or conditions not specified are conducted according to the techniques or conditions described in the literature in the art or according to the product manual. Unless otherwise indicated, the materials or equipment used are conventional products that can be obtained by purchase.

[0048] Those skilled in the art will understand that the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. It will be understood that when an element is referred to as being "connected" to or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements can be present. In addition, the term "coupled" as used herein can include the wireless coupling.

[0049] In the description of the present application, unless otherwise stated, the meaning of "a plurality of" 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 the convenience of describing the present application and simplifying the 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 present application.

[0050] 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 meanings of the above terms in the present application should be understood according to the specific circumstances by those of ordinary skill in the art.

[0051] Those skilled in the art can understand that, unless otherwise defined, all terms used herein, including technical terms and scientific terms, 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 defined as such.

[0052] As Figure 1 A skirted valve for upstream of a granular smoking segment, the valve comprising: a membrane 1 and a frame 2 bonded to one side of the membrane 1. The entire valve is made of paper.

[0053] "one side" is shown as the front of the membrane 1 in the front view. Figure 1

[0054] The frame 2 comprises a frame body and sixteen skirts 22 arranged at the periphery of the frame body and spaced from each other. Each skirt 22 is substantially rectangular in shape. The short edge of each skirt 22 is connected to the frame body by a crease line 23. A "cross" shaped frame opening 21 is arranged at the center of the frame body. The edges of the frame opening 21 are all smooth curves. The "cross" shaped frame opening 21 corresponds to the shape of the heating element of the heating device for future use of the cigarette, Figure 1 The "cross" shaped frame opening 21 in the present application can correspond to common needle type central heating, sheet type heating and cross heating elements. If there are other forms of heating elements, the corresponding frame opening shape can be changed. The frame body is a circular sheet, and the frame body edge is spaced apart by a recess 24, and adjacent skirts 22 are spaced apart by the recess 24.

[0055] ​The film sheet 1 is a circular sheet, and its edges are also spaced apart with concave parts so that the film sheet 1 completely overlaps the frame body edges. The film sheet 1 is centrally provided with a pair of mutually perpendicular main cuts 11, which are located in the center of the "cross" frame opening 21. The main cuts 11 are in the shape of a "cross". In the center of the main cuts 11, two center cuts 12 are provided at an angle of 45 degrees to the main cuts 11 and cross each other. The center cuts 12 and the main cuts 11 together form a "rice" shape. Eight vertical cuts 13 are provided in four directions up, down, left and right along the main cuts 11 and communicate with the main cuts 11 and are perpendicular to the main cuts 11. One end cut 14 is provided at each end of the main cuts 11 and communicates with the main cuts 11 and is perpendicular to the main cuts 11.

[0056] The shape of the above-mentioned "cross" frame opening 21 corresponds to the shape of the heating element of the heating device used by the cigarette in the future, Figure 1 The "cross" frame opening 21 corresponds to the common needle-type central heating, sheet-type heating and cross heating body, and if there are other forms of heating elements, the corresponding opening shape can be changed.

[0057] The function of the above-mentioned center cut 12 is to prevent the leakage of the internally packed smoking material, and to facilitate the insertion of the central heating element through the valve into the smoking section of the cigarette formed by the present application.

[0058] The length of the center cut 12 is a, which is 1.2-1.8 times the diameter of the needle-type or rod-type central heating element. The length of the vertical cut 13 is b, which is 1.1-1.5 times the thickness of the sheet-type heating element. The length of the end cut 14 is c, which is 1 / 3-4 / 5 of b.

[0059] The common function of the above-mentioned main cut 11, center cut 12, vertical cut 13 and end cut 14 is:

[0060] 1. When the cigarette formed by the valve of the present application is used with the sheet-type or cross-type heating element, the above-mentioned cuts give the film sheet 1 a pre-deformation direction, which prevents the damage of the film sheet 1 caused by the insertion of the sheet-type heating element beyond the elastic adaptation range of the film sheet 1;

[0061] 2. Effectively prevents the leakage of the internally packed smoking particles in the smoking section to pollute the heating device or leak in the non-use stage;

[0062] 3. At the same time, the above-mentioned cuts are not completely sealed, so that air is allowed to flow in during smoking.

[0063] For example, Figures 2-3In the second embodiment, the frame body is a regular octagonal sheet, with a skirt 22 connected to each side of the octagon. The skirt 22 is a rectangular sheet structure, with its shorter side connected to each side of the octagon. The length of the skirt 22 is 0.5 to 1.5 times the diameter of the circumscribed circle of the frame body. This valve is mainly suitable for products with a cigarette diameter less than 7mm. The diameter of the circumscribed circle of the frame body is slightly larger than the inner diameter of the cigarette to achieve an interference fit.

[0064] Due to size limitations, the number of skirts 22 on this valve is reduced to 6-8, further simplifying the shape of the frame opening 21, reducing the length of the main cut 11, and merging the vertical cut 13 and the end cut 14 into one. The recommended length of the end cut 14 is b, where b is 1.1-1.5 times the thickness of the plate heating element.

[0065] like Figure 4 In the third embodiment, based on the first embodiment, the valve further includes a support frame 3. The support frame 3 is disposed on the other side of the diaphragm 1. The diaphragm 1 is bonded in the middle using the frame 2 and the support frame 3, which provides more stable support and fixation for the diaphragm 1. The support frame 3 is identical in structure to the frame body of the frame 2.

[0066] like Figure 5 In the fourth embodiment, based on the second embodiment, the valve further includes a support frame 3. The support frame 3 is disposed on the other side of the diaphragm 1. The support frame 3 has an opening at its center that is exactly the same as the cross-shaped frame opening 21, that is, the support frame 3 and the frame body of the frame 2 are completely identical. The frame 2 and the support frame 3 are used to bond the diaphragm 1 in the middle. The centers of the frame body, the support frame 3, and the diaphragm 1 are opposite each other.

[0067] like Figure 6, the fifth embodiment provides a granular cigarette, which comprises a tobacco tube, and the tobacco tube is sequentially provided with a granular smoking segment I, a middle blocking segment II, a temperature reducing segment III and a filter segment IV from the distal lip end to the proximal lip end. The distal lip end of the tobacco tube is provided with the valve of the second embodiment. That is, the distal lip end of the granular smoking segment I is blocked by the valve of the second embodiment to prevent the leakage of the smoking granules, while the valve is used for inserting the heating element. The tobacco tube is a paper tube. The frame body of the valve is a regular polygonal sheet, and the diameter of the circumscribed circle of the regular polygon is greater than the inner diameter of the tobacco tube, and there is a gap between the outer edge of the frame body and the inner wall of the tobacco tube, which allows the circulation of smoke. The middle blocking segment II is coaxially arranged with the tobacco tube. The middle blocking segment II is a hollow cylindrical structure, and has a transverse partition plate inside. The outer diameter of the hollow cylindrical structure is substantially equal to or slightly greater than the inner diameter of the tobacco tube, so that the side wall of the hollow cylindrical structure is in interference fit with the inner wall of the tobacco tube. The transverse partition plate blocks the smoking granules of the smoking segment I. The transverse partition plate has a ventilation hole. The size of the ventilation hole is smaller than the size of the smoking granules. Figure 6 It is the axial main sectional view and the A-A sectional view of the granular cigarette in the fifth embodiment.

Claims

1. A skirted valve for use upstream of a particulate type smoke segment, characterized in that, The valve comprises a diaphragm (1) and a frame (2) arranged on one side of the diaphragm (1); The frame (2) comprises a frame body and a plurality of skirts (22) arranged on the periphery of the frame body and spaced from each other, and the skirts (22) are connected with the frame body by a crease line (23); The frame body is provided with a frame opening (21) in the center; The diaphragm (1) is provided with a main cut (11) perpendicular to each other in the center, and the main cut (11) is located in the center of the frame opening (21); The frame body is a circular sheet, and the frame body is spaced apart by a recess (24) at the edge, and at least two adjacent skirts (22) are spaced apart by the recess (24); or the frame body is a regular polygon sheet, and each edge of the regular polygon is connected with one skirt (22); The edges of the frame opening (21) are smooth curves, and the frame opening (21) is a "cross" shape.

2. The skirted valve for upstream of a pellet-type smoking segment according to claim 1, characterized in that, In the center of the main cut (11), a center cut (12) is opened at a certain angle with the main cut (11), and the center cut (12) is at least one passing through the center of the main cut (11).

3. The skirted valve for upstream of a pellet-type smoking segment according to claim 2, characterized in that, The center cut (12) is two cross-arranged, and the center cut (12) and the main cut (11) together form a "rice" shape.

4. The skirted valve for upstream of a pellet-type smoking segment according to claim 1, wherein, The main cut (11) is provided with a plurality of vertical cuts (13) communicated therewith.

5. The skirted valve for upstream of a pellet-type smoking segment according to claim 1, wherein, The end of the main cut (11) is provided with an end cut (14) communicated therewith.

6. The skirted valve for upstream of a pellet-type smoking segment according to claim 1, wherein, The valve further comprises a support frame body (3); the support frame body (3) is arranged on the other side of the diaphragm (1) and completely overlaps with the frame body, and the support frame body (3) is provided with an opening same as the frame opening (21).

7. A granular cigarette, characterized by The granular cigarette contains a smoke pipe, and the smoke pipe is provided with a granular smoking section inside, and the distal lip end of the smoke pipe is provided with the valve according to any one of claims 1-6; When the frame body of the valve is a regular polygon sheet, the diameter of the circumscribed circle of the regular polygon is greater than the inner diameter of the smoke pipe, and there is a gap between the outer edge of the frame body and the inner wall of the smoke pipe allowing smoke to flow through; When the valve as a whole is a circular sheet, its outer diameter is greater than the inner diameter of the smoke pipe, so that the frame body and the smoke pipe are in interference fit.

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