Restraint piece self-held in paper tube and aerosol generating product comprising same

Abstract

The utility model belongs to the field of aerosol generating products, and particularly relates to a restraining piece self-held in a paper tube and an aerosol generating product comprising the restraining piece. The restraining piece comprises a perforated plate and at least two supporting legs connected with the perforated plate, and the distance between the outer edge of at least one local part on each supporting leg and the central axis of the paper tube is larger than the inner radius of the paper tube. When the restraining piece is installed on an aerosol generating product, the perforated plate can achieve the function of a supporting piece / fixing piece in the prior art, namely the particle filling section II does not move downstream relatively, and in addition, due to the fact that supporting legs of the restraining piece generate radial outward stress on a paper tube, the particle filling section II can not move downstream relatively. Compared with a traditional supporting piece / fixing piece, the restraining piece can be more firmly fixed in the paper tube, and under the condition of conventional use, the particle filling section II can be completely prevented from moving towards the downstream.

Description

Technical Field

[0001] The utility model belongs to the field of aerosol generating products, in particular to a restraining piece which is self-retained in a paper tube and an aerosol generating product comprising the restraining piece. Background Art

[0002] Granular aerosol generating products (also known as granular cigarettes) are a new type of heat-not-burn (Heat-Not-Burn, abbreviated as HNB) aerosol generating products in recent years. They use aerosol source material particles instead of aerosol source material sheets as aerosol generating materials. Aerosol source material particles are heated more evenly than aerosol source material sheets, and the aerosol diffuses more smoothly along the gaps between particles than along the gaps between sheet materials. Therefore, they are deeply loved by consumers.

[0003] Particulate aerosol generating products are known products on the market. Figure 1 The functional sections are described as follows: from the far lip end to the near lip end, they are divided into the upstream constraint section I, the particle filling section II, the downstream constraint section III, the cavity section IV and the filtration section V. The characteristics and functions of each section are described below.

[0004] The core component of the upstream constraint section I is the upstream constraint 1, which can be a filter cotton segment or a sealing membrane with holes or a breathable sealing membrane. Its main function is to constrain the aerosol source material particles and prevent them from leaking out from the far lip end.

[0005] The particle filling section II is filled with a plurality of aerosol source material particles 2. The material of these particles is not limited as long as they can release gaseous aroma components after being heated.

[0006] Downstream constraint section III, the core component of this section is the downstream constraint 3, which is usually a cylinder or a nearly cylindrical body with at least one airflow channel (preferably multiple airflow channels, and the distribution form and orientation form of the multiple airflow channels are not limited), or a section of filter cotton swab. Regardless of the form, the downstream constraint section has an airflow channel or an airflow gap to facilitate the migration of gaseous aroma components downstream, but the opening size of the airflow channel or the airflow gap can prevent particles from leaking downstream. In addition, because the particles are loose and have a certain fluidity, if they are not constrained, the particles will inevitably flow to the downstream cavity section on a large scale when the aerosol generating product is placed horizontally or inverted, resulting in a significant reduction in the particles that can be directly heated by the inserted heating element. The released flavor components and the amount of aerosol subsequently generated will naturally decrease. To ensure that the particles are fully heated, the particles must be constrained in a limited space near the heating element. This constraint is currently achieved by providing an upstream constraint 1 upstream of the particle filling section and a downstream constraint 3 downstream of the particle section. The constraints at both ends jointly constrain the particles in the particle filling section II so that the particles do not flow everywhere. This is a common structural feature of almost all particulate aerosol generating products.

[0007] Cavity section IV, which mainly includes a cavity 4, is crucial for aerosol formation. According to aerosol science theory, the gaseous aroma components released by heat need to be cooled to condense into solid particles or liquid particles, and the solid particles or liquid particles need to be suspended in the air to form aerosols visible to the naked eye (commonly known as "smoke" or "fog" or generally referred to as "smog"). The circumferential side wall of the cavity section 4 can also have air inlets for external air to enter, and the external air can also play a cooling and auxiliary nucleation role. Of course, there can be no air inlets; in some cases, the cavity section IV can be omitted, and at least one of the downstream constraint section III or the filter section V can be extended to make the two directly abut. However, patent documents have shown that compared with the absence of a cavity 4 and the direct abutment of the downstream constraint 3 and the filter 5, the arrangement of the cavity 4 between the downstream constraint 3 and the filter 5 is more advantageous in enhancing the aerosol cooling effect, especially when the side wall is also provided with an air inlet, the advantage is more obvious, so the arrangement of the cavity is preferred and is also the mainstream direction of the technology. In addition, the cavity 4 may be additionally filled with cooling material or aroma material to enhance cooling or aroma.

[0008] The filter section V mainly includes a filter element 5, which can be any form of filter rod in the prior art. After the aerosol passes through the filter rod and a part of the substance is filtered out, it enters the user's mouth. Therefore, the filter section can also be used as a cigarette holder for the user to hold in the mouth. In addition, the filter rod has the function of further cooling the aerosol.

[0009] All of the above components are filled in a paper tube 6 to form the main part of a particle-type aerosol generating product, which can be used directly as a commodity, or after a pattern is printed on the outer periphery of the paper tube 6 or accessories such as cigarette labels are attached to it, or after an electromagnetic heating plate is provided inside the particle filling section, it can be used as a commodity.

[0010] The particle-type aerosol generating product in the prior art can be inserted into the cigarette receiving cavity of an electric heating type smoking device or an electromagnetic heating type smoking device to be heated and release aerosol.

[0011] When inserted into an electric heating type smoking device with a central heating element, the central heating element (usually needle-shaped or sword-shaped, which can be a resistance heating plate or an electromagnetic heating plate) can pierce its upstream constraint section and insert into the particle filling section to heat the particles, so that they release gaseous flavor components. However, in the process of inserting the central heating element from the far lip end of the aerosol generating product into the particle filling section, due to the resistance of the upstream constraint and the particles themselves to the insertion of the central heating element, the user needs to press the far lip end of the aerosol generating product against the central heating element so as to provide an insertion force for the central heating element to penetrate the upstream constraint and enter the particle filling section. This insertion force may cause the particles to have a tendency to move downstream, so it is usually necessary to rely on the downstream constraint 3 to block the tendency to move downstream, or it is necessary to rely on the downstream constraint 3 to "support" the particle filling section II so that it does not move downstream. Therefore, the downstream constraint is often referred to as a "support member" or "support element" in the industry. In order to provide the support force, the downstream restraint itself must be firmly held in the paper tube 6 (if it is not firmly held, the downstream restraint itself will also move downstream), so the downstream restraint is sometimes also called "fixed material". There are many ways to implement this holding, for example, it can be achieved by the downstream restraint 3 directly contacting the filter 5 (but in this way, there is no way to form the cavity 4), and it can also be achieved by the friction between the downstream restraint 3 and the inner wall of the paper tube 6 (but the friction force cannot always provide a firm and reliable support, because in order to facilitate the filling of various components into the paper tube, the friction coefficient of the inner wall of the paper tube cannot be too large, and the friction coefficient is smaller when the inner wall of the paper tube is provided with an impermeable membrane or metal foil). More often, it is achieved by coating the outer surface of the downstream restraint 3 with adhesive and bonding it to the surface of the paper tube 6 (but the adhesive itself is easily heated to produce odor and the addition of the gluing process complicates the manufacturing process). Since the holding methods of the prior art each have their own shortcomings, technicians hope to have a better holding method, which is the first problem to be solved by the utility model.

[0012] In addition, unlike the situation that the filter is tightly wrapped by cigarette paper and firmly fixed in the cigarette by the traditional cigarettes for smoking, the manufacturing process of the particle-type aerosol generating product is to fill the filter 5 into the preformed paper tube 6 and hold it inside the paper tube 6 purely by friction. When there is a cavity 4, since there is no solid part upstream of the filter 5, it tends to move upstream, resulting in a depression at the mouth end of the aerosol generating product, causing appearance defects. In order to cover up such appearance defects, some manufacturers have to publicize that this is a deliberate depression at the mouth end for the hygienic purpose of preventing contamination of the end of the filter section, but they find it difficult to explain the fact that the degree of depression at the mouth end of the same batch of products is different. Therefore, how to prevent the filter 5 from moving upstream when there is a cavity 4 is the second problem to be solved by the utility model.

[0013] In addition, when there is a cavity segment, another problem with the product is that the radial pressure resistance of the cavity segment is insufficient. When the user's finger clamping force is too large and concentrated on the cavity segment, or when external force acts on the cavity segment during transportation or storage, the paper tube of the cavity segment may collapse or deflate, causing damage to the product's appearance and performance. This is the third problem to be solved by the utility model.

[0014] The present invention aims to solve at least one of the above problems. Utility Model Content

[0015] The first aspect of the utility model discloses a restraining member that is self-retained in a paper tube, wherein the restraining member comprises a porous plate and at least two legs connected to the porous plate, at least one of the legs having at least one local portion, and the distance between the outer edge of the local portion and the central axis of the paper tube is greater than the inner radius of the paper tube.

[0016] When only one leg has the above-mentioned local portion, at least one of the remaining legs, preferably all the remaining legs, should have at least one point, the distance between the outer edge of the point and the central axis of the paper tube should be equal to the inner radius of the paper tube.

[0017] Preferably, each of the legs has at least one local portion, and the distance between the outer edge of the local portion and the central axis of the paper tube is greater than the inner radius of the paper tube. Of course, when the cooperation between several legs with the above-mentioned local portions can provide radial outward stress, adding several legs without the above-mentioned local portions is an obvious modification of the utility model and also falls within the protection scope of the utility model.

[0018] The connection method between the porous plate and the support leg can be welding, detachable connection, integral molding, etc., and there is no special limitation on the connection point between the two. It can be inside the porous plate or on the outer edge of the porous plate. As long as the connection method can connect the porous plate and the support leg together, it is the connection method defined by the present invention.

[0019] Preferably, the distance between the outer edge of at least one local part of the leg and the central axis of the paper tube is greater than the inner radius of the paper tube. The leg itself may be formed by a certain angle between the central axis of the paper tube and the leg itself, or by an irregular shape of the leg itself, or by a component provided on the leg. When it is a component, the component may be a protrusion, and the shape of the protrusion is not limited, for example, it may be a cube, a cuboid, a hemisphere, or other regular or irregular shapes. The distance between the outer edge of the local part and the central axis is preferably between 1.001 and 1.20 times the inner radius of the paper tube, preferably 1.005 to 1.10 times, and more preferably 1.01 to 1.05 times. When the material of the leg is elastic, the multiple can be close to the upper limit value, and when the material of the leg is not elastic, the multiple is as close to the lower limit value as possible. Those skilled in the art can reasonably determine the above multiple according to the elasticity of the leg material, so as to achieve the technical purpose of providing deformation to generate sufficient radial stress to strengthen the holding effect without damaging the inner wall of the paper tube.

[0020] Wherein said " porous plate " should be understood in the broadest sense, its effect is to constrain particles not to leak downstream and to transmit the gaseous aroma components generated by the particles being heated to downstream through the holes thereon, so the shape, number, position and distribution of the holes on the porous plate are not specifically limited, as long as these holes can play the above-mentioned role. The porous plate need not be rigid, it can also be flexible, for example, mesh, such as metal mesh. The porous plate can also be a roll formed by a sheet material (such as paper) or a wrinkled sheet material (such as corrugated paper) rolled or folded into, and its numerous material gaps constitute porous, and this roll can also be regarded as the porous plate in the utility model. In addition, the hole can be " endoporus " or " boundary hole ", wherein " endoporus " refers to that the material surrounding the hole is all on the plate, wherein " boundary hole " refers to that a part of the material surrounding the hole is on the plate, and another part is not on the plate outside the plate (for example on a paper tube). Therefore, even if a plate has no "inner holes" at all but only has a missing material on the edge that forms an airflow channel (i.e., a "boundary hole") with the inner wall of the paper tube or the inner wall appendages, the plate is also considered a "porous plate". The porous plate may be a curved surface or a flat surface, wherein the flat surface may be perpendicular or non-perpendicular to the central axis of the paper tube, wherein the curved surface is relative to the flat surface, and includes but is not limited to a hemispherical surface, a wavy surface, and other regular or irregular shapes. The projection of the porous plate on a plane perpendicular to the central axis is a circle or various shape adjustments based on the circle, such as partial missing of the outer edge, local deformation, overall deformation (e.g., a circle becomes an ellipse), etc., as long as its edge can partially or completely contact the paper tube, and the gap between the porous plate and the inner wall of the paper tube can prevent particles from leaking downstream.

[0021] Preferably, a transition portion is provided on the raised portion, and the transition portion may be any structure such as a chamfer that can achieve a smooth transition between the leg body and the raised portion, and its function is to reduce the damage of the paper tube when the restraint member is filled into the paper tube.

[0022] The material of the porous plate and the legs is not limited, for example, each independently can be metal, ceramic, polymer material, etc., or even paper with sufficient rigidity. When it is a polymer material, it is preferably a heat-resistant polymer material that can withstand high temperatures above 200°C, such as polyetheretherketone (PEEK) or silicone. The material of the legs does not need to be elastic, but preferably, the legs have the ability to rebound under force.

[0023] The at least two legs do not need to be of the same size, and some may be thicker and some may be thinner; they do not need to be of the same shape, and may be of different shapes, as long as the distance between the outer edge of at least one local portion of at least one leg and the central axis of the paper tube is greater than the inner radius of the paper tube. Of course, for the convenience of processing, it is preferred that the legs have the same size and shape.

[0024] Preferably, each of the at least two legs (32) has at least one local portion, and the projection of the point where each local portion contacts the paper tube on the cross section of the paper tube is located at N equally divided points on the circumference of the cross section, where N is the number of legs, for example, N=2, 3, 4, 5, ..., so as to provide uniform radial outward stress. However, the utility model also allows the connection points of each leg and the porous plate not to fall at the above-mentioned N equally divided points, as long as each leg can cooperate to provide at least one radial outward stress.

[0025] Support arms may be added between the legs according to the situation to enhance the radial support strength or improve the radial elasticity.

[0026] In one extreme case, the number of legs is infinite, and the gap between adjacent legs is infinitely small. From the perspective of calculus, the infinite number of legs are actually connected to form a side wall, which is also within the scope of the technical solution of the present invention. It is also allowed that a number of legs are missing under the premise of an infinite number of legs, forming a side wall with partial missing legs, which is also within the scope of the technical solution of the present invention.

[0027] The second aspect of the utility model discloses an aerosol generating product, which comprises an upstream restraining member filled in a paper tube, a plurality of aerosol source material particles, the restraining member and the filter member described in the first aspect of the utility model. The particle filling section II may contain an electromagnetic heating element or may not contain an electromagnetic heating element, that is, the heating element may be located in the smoking device or in the cigarette.

[0028] The "paper tube" is merely used as an example of a low-cost representative of tubes. In fact, any tube, regardless of its material, is within the technical solution scope of the second aspect of the utility model, but the paper tube is obviously the cheapest.

[0029] The upstream restraint may be a filter rod or a sealing member, etc. Any element that can restrain particles from leaking out from the upstream end can be considered as an upstream restraint. For example, the upstream part of the particles may be partially bonded or partially filled more tightly to restrain the downstream particles from leaking out from the upstream end. Such partially bonded or locally tightly filled areas can also be regarded as upstream restraints.

[0030] When the restraining member of the utility model is loaded into the paper tube, at least one local part of at least one leg (the distance between the outer edge of the local part and the central axis of the paper tube is greater than the inner radius of the paper tube) will be deformed and / or the paper tube itself will be slightly deformed, and then the restraining member is loaded into the paper tube without damage. The above deformation causes the local part to generate radial outward stress on the wall of the paper tube (thus greatly increasing the friction force) so that the restraining member is self-retained on the inner wall of the paper tube.

[0031] Preferably, the porous plate of the restraining member blocks the particles of the aerosol source material to limit their position, and the legs contact the filter member to limit its position.

[0032] Preferably, the inside of the paper tube is covered with an impermeable film or metal foil. Of course, the paper tube can also be an ordinary paper tube or other paper tube with a rougher surface, as long as it does not affect the assembly of the various components of the aerosol generating product.

[0033] The above technical features can be freely combined without contradiction. Therefore, the solutions after these free combinations are also regarded as the disclosed contents of the present utility model.

[0034] The utility model has the following beneficial effects:

[0035] 1. When the restraining member of the utility model is installed on the aerosol generating product, its porous plate can realize the function of the supporting member / fixed part in the prior art, that is, the particle filling section II does not move relatively downstream. In addition, because the restraining member legs generate radial outward stress on the paper tube, the restraining member can be more firmly held in the paper tube than the traditional supporting member / fixed part. Under normal use, the particle filling section II can be completely prevented from moving downstream.

[0036] 2. The support legs of the restraining member of the utility model not only realize self-retention, but also provide radial support to the cavity section to prevent the cavity section from collapsing or deflation.

[0037] 3. The ends of the legs of the restraining member of the utility model can also support the filter at its downstream end to prevent the filter from moving upstream, playing a bidirectional supporting role, solving the three major problems currently faced by the aerosol smoking products described in the background technology at one time.

[0038] 3. With the restraining member of the utility model, the space between the legs constitutes a "cavity section", but because the axial thickness of the porous plate is smaller than that of the downstream restraining member in the prior art, the volume of the cavity section is increased, thereby improving the aerosol cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the structure of a particle aerosol generating product in the prior art.

[0040] Figure 2 This is a schematic structural diagram of a first form of a restraining member that is self-retained in a paper tube according to the utility model.

[0041] Figure 3 This is a schematic structural diagram of a second form of a restraining member that is self-retained in a paper tube according to the present invention.

[0042] Figure 4 It is a schematic structural diagram of a third form of a restraining member that is self-retained in a paper tube according to the utility model.

[0043] Figure 5 This is a schematic structural diagram of a fourth form of a restraining member that is self-retained in a paper tube according to the present invention.

[0044] Figure 6 The figure is a schematic diagram of the structure of an aerosol generating product containing a restraining member of the first form of the present invention which is self-retained in a paper tube.

[0045] Figure 7 The figure is a schematic diagram of the structure of an aerosol generating product containing a restraining member of the second form of the present invention which is self-retained in a paper tube.

[0046] Figure 8 This is a schematic structural diagram of a fifth form of a restraining member that is self-retained in a paper tube according to the present invention.

[0047] Fig. 9 This is a schematic structural diagram of a sixth form of a restraining member that is self-retained in a paper tube according to the present invention.

[0048] All figures are schematic diagrams, which are only used to clearly show the technical solution of the utility model and are not drawn according to the actual scale.

[0049] List of reference numerals:

[0050] I. Upstream constraint section; II. Particle filling section; III. Downstream constraint section; IV. Cavity section; V. Filter section; 1. Upstream constraint member; 2. Aerosol source material particles; 3. Downstream constraint member; 4. Cavity; 5. Filter member; 6. Paper tube; 31. Perforated plate; 32. Support leg; 33. Protrusion; 34. Transition section. DETAILED DESCRIPTION

[0051] The content of the utility model is further explained below through specific implementation methods.

[0052] Example 1

[0053] A restraining member 3 which is self-retained in a paper tube, the restraining member comprising a flat circular porous plate 31 and two straight legs 32 (such as Figure 2 As shown in FIG. 1 , two legs 32 are connected to the porous plate 31. Each leg has a protrusion, and the distance between the outer edge of the protrusion and the central axis of the paper tube is 1.005 times the inner radius of the paper tube. The contact points between the two protrusions and the inner wall of the paper tube divide the circumference of the cross section of the paper tube into equal parts. The porous plate and the legs are made of ceramic.

[0054] A transition portion 34 is disposed on the protruding portion 33 .

[0055] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0056] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit the aerosol source material particles 2, and the ends of the legs 32 contact the filter element to limit the filter element.

[0057] When the restraining member 3 of the utility model is loaded into the paper tube, the leg protrusion 33 is slightly deformed and / or the paper tube itself is slightly deformed, and then the restraining member 3 is loaded into the paper tube without damage to the paper tube. The above-mentioned slight deformation generates radial outward stress on the wall of the paper tube (thus greatly increasing the friction force) so that the restraining member is self-fixed on the inner wall of the paper tube. Figure 6 shown.

[0058] The inner wall of the paper tube 6 is made of natural paper material and is not covered with an anti-penetration coating or aluminum foil.

[0059] Example 2

[0060] A restraining member 3 which is self-retained in a paper tube, the restraining member 3 comprising a flat circular porous plate 31 and two legs 32 (such as Figure 3As shown in the figure, the two legs are connected to the outer circumference of the porous plate. Each leg is in the shape of an arc that bends outward, and the distance between the vertex of the arc and the central axis of the paper tube is 1.2 times the inner radius of the paper tube. The contact points between the two arc vertices and the inner wall of the paper tube divide the circumference of the cross section of the paper tube into equal parts. The porous plate and the legs are made of high temperature resistant silicone with certain elasticity.

[0061] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0062] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit the aerosol source material particles 2, and the ends of the legs 32 contact the filter element to limit the filter element.

[0063] When the restraining member 3 of the utility model is loaded into the paper tube, the arc-shaped protrusion of the leg is significantly deformed and then loaded into the paper tube without damage to the paper tube. The above deformation generates radial outward stress on the wall of the paper tube, so that the restraining member 3 is self-fixed on the inner wall of the paper tube. Figure 7 shown.

[0064] The inner wall of the paper tube 6 is covered with aluminum foil.

[0065] Example 3

[0066] A restraining member 3 which is self-retained in a paper tube, the restraining member 3 comprising a flat circular porous plate 31 and three legs 32 (such as Figure 4 As shown in the figure, the three legs are connected to the outer circumference of the porous plate. Each leg is in a straight line shape, and the end of each leg has a protrusion 33, the distance between the outer edge and the central axis of the paper tube is 1.05 times the inner radius of the paper tube, and the contact points between the three protrusions and the inner wall of the paper tube divide the circumference of the cross section of the paper tube into three equal parts. The porous plate and the legs are made of high temperature resistant silicone with certain elasticity.

[0067] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0068] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit the aerosol source material particles 2, and the ends of the legs 32 contact the filter element to limit the filter element.

[0069] When the restraining member 3 of the utility model is loaded into the paper tube, the leg protrusion 33 is slightly deformed before being loaded into the paper tube without damage to the paper tube. The above deformation generates radial outward stress on the wall of the paper tube, so that the restraining member 3 is self-fixed on the inner wall of the paper tube.

[0070] The inner wall of the paper tube 6 is covered with aluminum foil.

[0071] Example 4

[0072] A restraining member 3 which is self-retained in a paper tube, the restraining member 3 comprising a curved circular porous plate 31 and two legs 32 (such as Figure 5 As shown in the figure, the two legs are connected to the outer circumference of the porous plate. Each leg is in a straight line shape, and the end of each leg has a protrusion 33, the distance between the outer edge and the central axis of the paper tube is 1.05 times the inner radius of the paper tube, and the contact points between the two protrusions and the inner wall of the paper tube divide the circumference of the cross section of the paper tube into equal parts. The porous plate and the legs are made of PEEK, which has weak elasticity.

[0073] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0074] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit the aerosol source material particles 2, and the ends of the legs 32 contact the filter element to limit the filter element.

[0075] When the restraining member 3 of the utility model is loaded into the paper tube, the leg protrusion 33 is slightly deformed before being loaded into the paper tube without damage to the paper tube. The above deformation generates radial outward stress on the wall of the paper tube, so that the restraining member 3 is self-fixed on the inner wall of the paper tube.

[0076] The inner wall of the paper tube 6 is made of natural paper material itself and is not covered with aluminum foil.

[0077] Example 5

[0078] A restraint 3 that is self-retained in a paper tube, the restraint 3 comprising a circular porous plate 31 with a curved surface (e.g., a circular indentation) and three legs 32 (not shown) connected to the circular porous plate. Each leg is in the shape of a straight leg, has no specially designed protrusion, but is slightly expanded outward, so that the distance from the outermost edge of the end to the central axis of the paper tube is 1.02 times the inner radius of the paper tube, and the contact points between the end sections of the three legs and the inner wall of the paper tube divide the outer circumference of the cross section of the paper tube into three equal parts. The porous plate and the legs are made of polyetheretherketone, which has weak elasticity.

[0079] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0080] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit the aerosol source material particles 2, and the ends of the legs 32 contact the filter element to limit the filter element.

[0081] When the restraining member 3 of the utility model is loaded into the paper tube, the end of the leg is slightly deformed before being loaded into the paper tube without damage to the paper tube. The above deformation generates radial outward stress on the wall of the paper tube, so that the restraining member 3 is self-fixed on the inner wall of the paper tube.

[0082] The inner wall of the paper tube 6 is covered with aluminum foil.

[0083] Example 6

[0084] A self-retaining restraint 3 in a paper tube, the restraint 3 comprising a flat circular porous plate 31 and a side wall connected thereto (i.e., formed by an infinite number of legs 32 arranged side by side), such as Figure 8 As shown in the cross-sectional view in FIG, the restraint is actually a cup-shaped structure with holes at the bottom. The porous plate and the side wall are both made of paper material. Figure 8 In a, an additional paper tape is pasted on the middle of the side wall, and the paper tape forms a raised portion 33; Figure 8 The middle b has a flange at the top of the side wall, which forms a raised portion 33, which is similar to a disposable paper cup with a hole at the bottom. The distance between the outermost edge of the raised portion and the central axis of the paper tube is 1.05 times the inner radius of the paper tube.

[0085] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0086] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit their position, and the upper end of the side wall contacts the filter element to limit its position.

[0087] When the restraining member 3 of the utility model is loaded into the paper tube, the protrusion is slightly deformed and then loaded into the paper tube without damage. The above-mentioned slight deformation generates radial outward stress on the wall of the paper tube, so that the restraining member 3 is self-fixed on the inner wall of the paper tube.

[0088] The inner wall of the paper tube 6 is made of natural paper material itself and is not covered with aluminum foil.

[0089] Example 7

[0090] A self-retaining restraint member 3 in a paper tube, the restraint member 3 comprising a flat circular porous plate 31 and two supporting legs 32 (such as Fig. 9As shown in the figure, one end of the two legs is connected to the outer circumference of the porous plate, and the other end is bent outward to form a curved protrusion 33. The shape of each leg is a straight line except for the protrusion 33. The distance between the outer edges of the two protrusions 33 and the central axis of the paper tube is 1.10 times the inner radius of the paper tube. The contact points between the two protrusions and the inner wall of the paper tube divide the circumference of the cross section of the paper tube into equal parts. The porous plate and the legs are made of stainless steel and have elasticity.

[0091] An aerosol generating product comprises an upstream restraining member 1 filled in a paper tube 6, a plurality of aerosol source material particles 2, a restraining member 3 in this embodiment and a filter 5.

[0092] The porous plate 31 of the restraining member 3 blocks the aerosol source material particles 2 to limit their position, and the top of the curved portion of the protrusion 33 contacts the filter element to limit its position.

[0093] When the restraining member 3 of the utility model is loaded into the paper tube, the protrusion is slightly deformed and then loaded into the paper tube without damage. The above-mentioned slight deformation generates radial outward stress on the wall of the paper tube, so that the restraining member 3 is self-fixed on the inner wall of the paper tube.

[0094] The inner wall of the paper tube 6 is covered with an anti-permeation coating.

[0095] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A restraining member (3) which is self-retained in a paper tube, characterized in that: The restraining member comprises a porous plate (31) and at least two legs (32) connected to the porous plate, at least one of the legs having at least one local portion, the distance between the outer edge of the local portion and the central axis of the paper tube being greater than the inner radius of the paper tube.

2. The restraining member according to claim 1, characterized in that: Each of the supporting legs has at least one local portion, and the distance between the outer edge of the local portion and the central axis of the paper tube is greater than the inner radius of the paper tube.

3. The restraining member according to claim 1, characterized in that: The porous plate is a curved plate or a flat plate or a net, and the local portion is a protrusion (33).

4. The restraining member according to claim 3, characterized in that: A transition portion (34) is provided on the raised portion (33).

5. The restraining member according to claim 2, characterized in that: The projection of the point where each local part contacts the paper tube on the cross section of the paper tube is located at N equally divided points on the circumference of the cross section, where N is the number of legs.

6. The restraining member according to claim 5, characterized in that: The number of the legs is infinite.

7. An aerosol generating product, characterized in that The aerosol generating article comprises an upstream restriction (1) filled in a paper tube (6), a plurality of aerosol source material particles (2), a restriction (3) according to any one of claims 1 to 6, and a filter (5).

8. The aerosol generating article according to claim 7, characterized in that The porous plate (31) of the restraining member (3) blocks the aerosol source material particles (2) to limit their position, and the legs (32) contact the filter member (5) to limit its position.

9. The aerosol generating article according to claim 7, characterized in that The local portion of the restraining member (3) generates radial outward stress on the wall of the paper tube so that the restraining member is self-retained on the inner wall of the paper tube.

10. The aerosol generating article according to claim 7, characterized in that The inside of the paper tube is covered with an anti-permeation coating or a metal foil.

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