Front plug segment, aerosol-generating article, and method for manufacturing front plug segment

Abstract

The embodiment of the invention discloses a front plug section, an aerosol generating product and a manufacturing method of the front plug section, the front plug section comprises a wrapping layer and a filling part, the filling part is formed by bending a layered filling piece for multiple times and is in a wrinkled shape, the filling part is arranged in the wrapping layer, and the wrapping layer is arranged on the filling part. A channel extending from one end of the front plug section to the other end of the front plug section is formed in the wrapping layer. According to the embodiment of the invention, the front plug section can reduce the probability that the medium section falls off from the outer packaging layer, and meanwhile, the front plug section does not generate too large suction resistance to suction of aerosol. Besides, after suction is finished, aerosol can flow backwards / backwards due to the negative pressure generated in the suction process of the containing bin, and the filling part in the wrinkle shape has a good adsorption effect and can adsorb the aerosol in the flow backwards / backwards process, so that the problems that the containing bin is polluted by the aerosol and is not easy to clean are solved; and the problem of odor tainting possibly caused by smoking aerosol generation products with different tastes can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of smoking articles, in particular to a front plug segment, an aerosol generating article and a manufacturing method of the front plug segment. BACKGROUND

[0002] This section is intended to provide background or context to the embodiments described in this application. The description herein does not constitute an admission that the information provided herein is prior art.

[0003] A smoking article includes an aerosol generating article that forms an aerosol by being ignited and an aerosol generating article that forms an aerosol by being heated without being combusted, wherein in a typical aerosol generating article that is heated without being combusted, a medium segment that generates an aerosol when heated and a front plug segment provided upstream of the medium segment are included, and the medium segment is heated by an external heat source to just a degree sufficient to emit a desired component and flavor. The front plug segment can generally function to absorb condensed liquid when the aerosol is condensed in the aerosol generating article, preventing the liquid from flowing out of the aerosol generating article to contaminate the heating device.

[0004] Among them, the resistance of the aerosol generating article in the process of smoking is an important indicator of the aerosol generating article. In the related art, the front plug segment generates a large resistance during aerosol suction, reducing the user's experience. SUMMARY

[0005] Therefore, the embodiments of the present application aim to provide a front plug segment, an aerosol generating article and a manufacturing method of the front plug segment, which are designed to reduce the resistance generated by the front plug segment to improve the user's experience.

[0006] To achieve the above object, the technical scheme of the embodiments of the present application is as follows:

[0007] In a first aspect, the embodiments of the present application provide a front plug segment applied to an aerosol generating article, the front plug segment comprising a wrapping layer and a filling part, the filling part being formed by a filling piece in a layered shape through multiple bending and being in a pleated shape, the filling part being arranged in the wrapping layer to construct a channel extending from one end to the other end of the front plug segment in the wrapping layer.

[0008] In an embodiment, the front plug segment is in a cylindrical shape, and the diameter of the front plug segment is d;

[0009] The number of the filling piece is one, and the width of the filling piece ranges from 2d to 60d; or

[0010] The number of the filling piece is one, and the width of the filling piece ranges from 2d to 60d; or

[0011] In an embodiment, the filler is made of fiber paper, and the fiber paper has a weight of 20-100 g / m 2 -140g / m 2 .

[0012] In an embodiment, the filler comprises a base layer and a hardening layer.

[0013] In an embodiment, the base layer and the hardening layer are each one layer; or, the base layer is one layer, and the hardening layer is two layers, and the two layers of the hardening layer are respectively stacked on both sides of the base layer along the thickness direction.

[0014] In an embodiment, the base layer is made of at least one of broadleaf fiber, coniferous fiber, hemp fiber, and bamboo fiber.

[0015] In an embodiment, the hardening layer is configured to be formed by coating the surface of the base layer with a mixture of a hardening material and a solvent, and the hardening material comprises at least one of cellulose, polysaccharide, polylactic acid, polybutylene terephthalate, and polyethylene terephthalate.

[0016] In an embodiment, the wrapping layer is made of at least one of polylactic acid, fiber paper, polyethylene, and polyethylene terephthalate.

[0017] In an embodiment, the wrapping layer has a thickness of 0.05-0.5 mm.

[0018] In an embodiment, the filler has a filling rate of 10%-98% in the wrapping layer.

[0019] In a second aspect, an aerosol-generating article is provided, which has a distal lip end and a proximal lip end, and comprises:

[0020] A medium section for generating an aerosol;

[0021] The front plug section of any of the above embodiments is arranged at one end of the medium section and located at the distal lip end of the aerosol-generating article.

[0022] In an embodiment, the aerosol-generating article further comprises a base structure section arranged at one end of the medium section away from the front plug section, and the base structure section comprises at least one of a support section, a filter section, and a cooling section.

[0023] In an embodiment, the length of the front plug section is 1 / 12-1 / 3 of the length of the aerosol-generating article.

[0024] In a third aspect, the embodiments of the present application provide a manufacturing method of the front plug section, comprising:

[0025] embossing the filling piece to obtain the filling part in a pleated form;

[0026] gathering and forming the filling part and the wrapping layer to obtain the front plug section.

[0027] In an embodiment, before the step of embossing the filling piece to obtain the filling part in a pleated form, the manufacturing method comprises:

[0028] mixing the hardening material and the solvent and then coating the surface of the base layer to form the filling piece.

[0029] In an embodiment, before the step of mixing the hardening material and the solvent and then coating the surface of the base layer to form the filling piece, the manufacturing method comprises:

[0030] mixing one or more of cellulose, polysaccharide, polylactic acid, polybutylene terephthalate, and polyethylene terephthalate to obtain the hardening material;

[0031] mixing one or more of water, ethanol, and glycerol to obtain the solvent.

[0032] In an embodiment, after the step of mixing the hardening material and the solvent and then coating the surface of the base layer to form the filling piece, the manufacturing method comprises: heating and drying the filling piece; or,

[0033] after the step of gathering and forming the filling part and the wrapping layer to obtain the front plug section, the manufacturing method comprises: heating and drying the front plug section.

[0034] In an embodiment, the drying temperature of the heating and drying is between 80°C and 140°C.

[0035] In an embodiment, after the step of obtaining the front plug section, the manufacturing method comprises:

[0036] cutting the front plug section.

[0037] The front plug segment of the embodiment of the present application is composed of a wrapping layer and a filling part. The filling part is formed by folding a layered filling piece multiple times and has a pleated shape. The filling part is arranged in the wrapping layer to form a channel extending from one end to the other end of the front plug segment in the wrapping layer. The airflow from the outside can flow to the medium segment through the channel, thereby reducing the suction resistance of the front plug segment to the suction of the aerosol, and thereby improving the user experience. That is, after the front plug segment of the embodiment of the present application is used in the aerosol generating article, the probability of the medium segment falling out of the outer wrapping layer is reduced, and at the same time, the front plug segment does not generate too much suction resistance to the suction of the aerosol. In addition, after the suction is completed, the accommodation cavity will cause the aerosol to backflow due to the negative pressure generated during the suction process. The filling part with a pleated shape has good adsorption effect and can adsorb the aerosol during the backflow process, which is beneficial to improve the problem that the accommodation cavity is polluted by the aerosol and is not easy to clean, and is beneficial to improve the problem of flavor mixing that may be caused by suctioning different flavored aerosol generating articles. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 Structure diagram of an aerosol generating article according to an embodiment of the present application;

[0039] Figure 2 Structure diagram of an aerosol generating article according to an embodiment of the present application;

[0040] Figure 3 Structure diagram of an aerosol generating article according to an embodiment of the present application;

[0041] Figure 4 Structure diagram of a front plug segment according to a first embodiment of the present application;

[0042] Figure 5 Structure diagram of a front plug segment according to a second embodiment of the present application;

[0043] Figure 6 Structure diagram of a front plug segment according to a third embodiment of the present application;

[0044] Figure 7 Structure diagram of a front plug segment according to a fourth embodiment of the present application;

[0045] Figure 8 Structure diagram of a filling piece according to an embodiment of the present application;

[0046] Figure 9 Structure diagram of a filling piece according to another embodiment of the present application;

[0047] Figure 10 Production line according to a first embodiment of the present application;

[0048] Figure 11 Production line according to a second embodiment of the present application;

[0049] Figure 12 A production line of the third embodiment of the present application;

[0050] Figure 13 A flow chart of the manufacturing method of the front plug segment of an embodiment of the present application.

[0051] Legend of reference signs

[0052] 100, aerosol generating article; 100a, distal lip end; 100b, proximal lip end; 10, front plug segment; 10a, passage; 11, wrapping layer; 12, filler; 121, base layer; 122, hardening layer; 20, medium segment; 30, base structure segment; 31, temperature reduction segment; 32, filtration segment; 33, support segment; 40, outer wrapping layer;

[0053] 1, base layer paper; 2, wrapping layer paper; 3, embossing device; 4, gathering device; 5, slitting device; 6, drying device; 7, spraying device. DETAILED DESCRIPTION

[0054] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. The following embodiments are only used to make the technical solutions of the present application clearer, and therefore only serve as examples, but cannot be used to limit the protection scope of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0055] In the description of the embodiments of the present application, the technical terms “first”, “second”, “third” and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of “a plurality of” is two or more, unless otherwise explicitly and specifically limited.

[0056] Reference herein to “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0057] In the description of the embodiments of the present application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0058] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0059] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0060] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0061] Please refer to Figures 1 to 3 , in a first aspect, the embodiments of the present application provide an aerosol generating article, the aerosol generating article 100 has a distal lip end 100a and a proximal lip end 100b, the aerosol generating article 100 includes a medium section 20 and the front plug section 10 of any embodiment of the present application.

[0062] It should be noted that generally, the user can use the aerosol generating article 100 by mouth, the proximal lip end 100b refers to the end of the aerosol generating article 100 close to the user when the user uses the aerosol generating article 100, and the distal lip end 100a refers to the end of the aerosol generating article 100 away from the user when the user uses the aerosol generating article 100.

[0063] In the embodiments of the present application, the medium section 20 is generally cylindrical. Among them, the cylindrical shape can be a circular cylinder (i.e. the cross-sectional shape is circular), a prism (i.e. the cross-sectional shape is polygonal), an elliptical cylinder (i.e. the cross-sectional shape is elliptical), etc., which is not limited here.

[0064] The aerosol generating article 100 is used for an aerosol generating device, the aerosol generating device has a containing bin, and the aerosol generating article 100 can be inserted into the containing bin and heated by the heating element of the aerosol generating device.

[0065] The medium segment 20 is used to generate aerosol. The heating element is used to convert electrical energy into heat energy, which acts on the medium segment 20, and the medium segment 20 can generate aerosol after being heated for the user to use.

[0066] The way in which the heating element heats the medium segment 20 is not limited. Exemplarily, the heating methods include center heating and peripheral heating. The center heating method refers to the heating assembly inserted into the inside of the medium segment 20 to bake the medium segment 20 from the inside to the outside. The peripheral heating method refers to the heating assembly arranged at the periphery of the medium segment 20 to bake the medium segment 20 from the outside to the inside. These heating methods can be resistance heating, electromagnetic heating, infrared heating, microwave heating, laser heating, etc., which are not limited here.

[0067] Referring to Figures 1 to 3 , the aerosol-generating article 100 generally further includes an outer wrapping layer 40 surrounding the outer periphery of the front plug segment 10 and the medium segment 20.

[0068] The outer wrapping layer 40 has a certain hardness and can play a certain protective role for the medium segment 20, reduce the surface area of the medium segment 20 directly exposed to the outside world, thereby reducing the probability of the medium segment 20 being damp and deteriorated due to contact with air, and also reducing the probability of the medium segment 20 being contaminated due to contact with other components in the aerosol-generating device.

[0069] The specific material of the outer wrapping layer 40 is not limited, for example, one or more combinations of fiber paper, metal foil, metal foil composite fiber paper, PE (Polyethylene), polyethylene composite fiber paper, PBAT (Poly(butylene adipate-co-terephthalate), etc.

[0070] The front plug segment 10 is arranged at one end of the medium segment 20 and located at the distal lip end 100a of the aerosol-generating article 100. On the one hand, during use, the front plug segment 10 can effectively reduce the probability of the medium segment 20 falling out of the outer wrapping layer 40; on the other hand, it can also effectively avoid the problem that the condensed aerosol flows downward and remains in the containing chamber of the aerosol-generating device, thereby causing internal pollution of the containing chamber and being difficult to clean, and the problem of flavoring of different taste aerosol-generating articles 100.

[0071] The shape of the cross section of the outer wrapping layer 40 in the plane perpendicular to the axis of the aerosol-generating article 100 is not limited. Generally, referring to Figure 3The cross section of the outer packaging layer 40 is a circular ring. The circular ring means that the outer packaging layer 40 has a wall thickness, and thus the cross section of the inner and outer circumferential wall surface is a circular ring. It can be understood that the outer packaging layer 40 is usually a paper material, and the thickness is small, for example, less than 1 mm, and thus the cross section shape can also be considered as a circle. That is, the outer wall surface of the outer packaging layer 40 is a cylindrical surface. The outer packaging layer 40 of this structure is a cylindrical structure as a whole, and the aerosol generating article 100 in the cylindrical structure can be inserted into the accommodation cavity at various angles along the circumferential direction, thereby facilitating the use of the user.

[0072] Referring to Figures 1 to 7 In a second aspect, the embodiments of the present application provide a front plug section 10 applied to the aerosol generating article 100.

[0073] The front plug section 10 includes a wrapping layer 11 and a filling part formed by multiple bending of a filling piece 12 in a layer shape, and the filling part is in a pleated shape and is arranged in the wrapping layer 11 to form a channel 10a extending from one end to the other end of the front plug section 10 in the wrapping layer 11.

[0074] Referring to Figures 3 to 7 The filling part in the pleated shape, the channel 10a extends along the axial direction of the front plug section 10 as a whole. It can be understood that in a plane perpendicular to the axial direction of the front plug section 10, the cross section of the channel 10a is in a bent shape.

[0075] The airflow from the outside can flow to the medium section 20 through the channel 10a, thereby reducing the suction resistance generated by the front plug section 10 when sucking the aerosol. At the same time, since the filling part is in a pleated shape, it has a good adsorption effect, thereby helping to reduce the probability of the condensed aerosol flowing downward and remaining in the accommodation cavity of the aerosol generating device.

[0076] In the related art, the front plug section can effectively reduce the probability of the medium section falling out of the outer packaging layer, but the front plug section will generate a large suction resistance when sucking the aerosol, reducing the user's experience. Therefore, it is desirable to develop an aerosol generating article that can prevent the medium section from falling off and effectively reduce the suction resistance generated by the front plug section when sucking the aerosol.

[0077] The front plug segment 10 of the present application is composed of a wrapping layer 11 and a filling part. The filling part is formed by folding a layered filling piece 12 multiple times and has a pleated shape. The filling part is arranged in the wrapping layer 11 to form a channel 10a extending from one end to the other end of the front plug segment 10 in the wrapping layer 11. The airflow from the outside can flow to the medium segment 20 through the channel 10a, thereby reducing the suction resistance of the front plug segment 10 to the suction of the aerosol, and further improving the user's experience. That is, after the front plug segment 10 of the present application is used in the aerosol generating article 100, the probability of the medium segment 20 falling out of the outer wrapping layer 40 is reduced, and the front plug segment 10 does not generate too much suction resistance to the suction of the aerosol. In addition, after the suction is completed, the accommodation cavity will cause the aerosol to backflow due to the negative pressure generated during the suction process. The filling part with a pleated shape has good adsorption effect and can adsorb the aerosol during the backflow process, which is beneficial to improve the problem that the accommodation cavity is polluted by the aerosol and is not easy to clean, and is beneficial to improve the problem of flavor mixing that may be caused by suctioning different flavored aerosol generating articles 100.

[0078] The forming method of the medium segment 20 is not limited. In some embodiments, the medium segment 20 is an integral structure, that is, the medium segment 20 is integrally formed. For example, the medium segment 20 is a granular combination, also known as a powder combination, which is a reconstituted tobacco medium, for example, a reconstituted tobacco medium containing components such as a smoking agent and tobacco. The medium segment 20 is an integral structure, which can be formed by, for example, an extrusion, injection molding or die casting forming process. Among them, the extrusion forming refers to a processing method in which the raw material mixture is added to the extruder, the material is pushed forward by the screw through the action between the extruder barrel and the screw, and various cross-section products or semi-products are formed by continuously passing through the die of the extruder discharge port. The medium structure formed by extrusion forming is in the form of a strip. In this way, the medium segment 20 is an integral medium when heated and smoked or stopped heating, and is not easy to disintegrate and fall off, solving the problems of the flaky, filamentous or scattered granular medium segment 20 in the prior art, such as flaky loosening, filamentous components, granular components falling off, not easy to clean, and uneven components.

[0079] Of course, the medium segment 20 can also not adopt an integral structure. For example, it can be in the form of disordered cut tobacco (plant leaves are directly cut into strips), ordered flaky (plant leaf materials and other materials are formed by papermaking), or granular (plant leaf materials and other materials are formed by granulation).

[0080] The specific components of the medium segment 20 are not limited here. For example, in some embodiments, the medium segment 20 can include plant components, auxiliary components, smoking agent components, adhesive components, and flavor components.

[0081] The plant component is used to generate aerosol when heated. The assistant component is used to provide skeleton support for the plant component. The smoking agent component is used to produce smoke when heated. The adhesive component is used to bond the raw material components. The flavor component is used to provide characteristic aroma. In this way, the plant component and the smoking agent component can ensure the amount of aerosol generation, while the flavor component can enhance the release of aroma during smoking, improving the user experience. The assistant component not only improves the flowability of the mixture, but also makes the medium section 20 porous to facilitate the extraction and flow of aerosol. The adhesive component ensures that the plant component and the assistant component form a stable mixture, avoiding loose structure.

[0082] Exemplarily, the plant component can be one or more combinations of tobacco leaf raw material, tobacco leaf fragments, tobacco stems, tobacco fines, and crushed powders of flavor plants. The plant component is the core source of aroma, and the endogenous substances in the plant component can produce physiological satisfaction for users. For example, alkaloids enter the human blood, promote the pituitary gland to produce dopamine, and thus obtain physiological satisfaction.

[0083] Exemplarily, the assistant component can be one or more combinations of inorganic fillers, lubricants, and emulsifiers. The inorganic fillers include one or more combinations of heavy calcium carbonate, light calcium carbonate, zeolite, attapulgite, talc, and diatomite. The inorganic fillers can provide skeleton support for the plant component, and at the same time, the inorganic fillers also have micropores, which can increase the porosity of the medium section 20, thereby increasing the aerosol release rate. The lubricants include one or more combinations of candelilla wax, carnauba wax, shellac, sunflower wax, rice bran, beeswax, stearic acid, and palmitic acid. The lubricants can increase the flowability of the plant component powder, reduce the friction between the plant component powders, make the overall density of the plant component powder distribution more uniform, and also reduce the pressure required in the extrusion molding process and reduce the wear of the die. The emulsifiers include one or more combinations of polyglycerol fatty acid esters, Tween-80, and polyvinyl alcohol. The emulsifiers can slow down the loss of flavor substances during storage to some extent, increase the stability of flavor substances, and improve the sensory quality of the product.

[0084] Exemplarily, the smoking agent component can include one or more combinations of monohydric alcohol (such as menthol), polyhydric alcohol (such as propylene glycol, glycerol, triethylene glycol, 1,3-butanediol, and tetraethylene glycol), ester of polyhydric alcohol (such as glyceryl triacetate, triethyl citrate, glycerol diacetate mixture, triethyl citrate, benzyl benzoate, glyceryl tributyrate), monocarboxylic acid, dicarboxylic acid, polycarboxylic acid (such as lauric acid, myristic acid), or aliphatic ester of polycarboxylic acid (such as dimethyl dodecanedioate, dimethyl tetradecanedioate, erythritol, 1,3-butanediol, tetraethylene glycol, triethyl citrate, propylene carbonate, ethyl laurate, Triactin, meso-erythritol, glycerol diacetate mixture, diethyl suberate, triethyl citrate, benzyl benzoate, benzyl phenyl acetate, ethyl vanillate, glyceryl tributyrate, lauryl acetate).

[0085] Exemplarily, the adhesive component is closely contacted with the component raw material by interfacial wetting, and generates intermolecular attraction, thereby playing a role of bonding the component raw material, such as powder, liquid, etc. The adhesive component can be one or more combinations of natural plant extraction, non-ionized modified viscous polysaccharide, including one or more combinations of tamarind polysaccharide, guar gum, modified cellulose (such as carboxymethyl cellulose). The adhesive is used to bond the particles together, which is not easy to be loose, and in addition, improves the water resistance of the medium section 20, and is harmless to human body.

[0086] Exemplarily, the flavor component is used to provide characteristic aroma, such as solid or liquid substances of hay aroma, roasted sweet aroma, nicotine. The flavor component can include one or more combinations of tobacco or other plants, flavor plant extract, extract, essential oil, absolute oil; the flavor component can include one or more combinations of monomeric flavor substances, such as megastigmatrienone, neophytadiene, geraniol, neral, etc.

[0087] It should be noted that the cross-sectional shape of the front plug section 10 is not limited here.

[0088] In some embodiments, referring to Figures 3 to 6 In the plane perpendicular to the axial direction of the front plug section 10, the cross-sectional shape of the front plug section 10 is circular.

[0089] In some other embodiments, referring to Figure 7 In the plane perpendicular to the axial direction of the front plug section 10, the cross-sectional shape of the front plug section 10 is non-circular.

[0090] According to the foregoing, in the plane perpendicular to the axial direction of the front plug section 10, the outer packaging layer 40 is generally a circular ring, and the cross-sectional shape of the front plug section 10 is non-circular, so that after the front plug section 10 and the outer packaging layer 40 are assembled, the inner side wall of the outer packaging layer 40 and the outer side wall of the wrapping layer 11 can define an outer circumferential air channel.

[0091] The airflow from the outside can flow to the medium section 20 through the peripheral air passage, thereby reducing the resistance to draw generated by the pre-segment 10 when drawing the aerosol, and improving the user's experience.

[0092] In addition, the peripheral air passage is formed on the outer periphery of the pre-segment 10, and the airflow from the outside flows to the medium section 20 through the peripheral air passage, and then gradually flows from the outer periphery of the medium section 20 to the inside of the medium section 20, which can increase the utilization rate of the outer periphery of the medium section 20, thereby improving the drawability of the aerosol generating article 100.

[0093] In an embodiment, the cross section of the pre-segment 10 is corrugated, polygonal, racetrack-shaped, fan-shaped, or elliptical.

[0094] It should be noted that since the filling portion is located inside the wrapping layer 11, the peripheral air passage is formed by the wrapping layer 11 and the outer packaging layer 40, and therefore, the cross section of the pre-segment 10 can also be considered as the cross section of the region surrounded by the wrapping layer 11.

[0095] The polygon can be any number of sides, and can be a regular polygon, or a polygon with sides that are not all equal, etc. For example, a regular heptadecagon, a regular hexagon, or a regular pentagon.

[0096] The racetrack-shaped refers to a shape similar to a track and field track, which is formed by alternately connecting two semicircles with the same radius and two parallel straight edges.

[0097] That is, the cross section of the pre-segment 10 can be any shape other than a circle, which facilitates the formation of the peripheral air passage between the pre-segment 10 and the outer packaging layer 40.

[0098] In an embodiment, the side wall of the pre-segment 10 is recessed to form an air groove, and the air groove extends along the axial direction of the pre-segment 10.

[0099] It should be noted that the air groove 11a is formed on the wrapping layer 11, and the wrapping layer 11 has a certain hardness. After the pre-segment 10 is formed, the shape of the wrapping layer 11 is not easy to change, thereby being able to shape the air groove 11a.

[0100] The groove wall of the air groove and the inner side wall of the outer packaging layer 40 define the peripheral air passage.

[0101] In this embodiment, the part of the outer side wall of the pre-segment 10 other than the groove wall of the air groove can be connected to the inner side wall of the outer packaging layer 40, so that the space of the air groove can basically be used as the space of the peripheral air passage.

[0102] It can be understood that in this embodiment, since the side wall of the front plug section 10 is recessed to form the air groove, as long as the inner side wall of the outer packaging layer 40 does not occupy all the space in the air groove after the front plug section 10 is assembled with the outer packaging layer 40, the outer circumferential air channel is defined between the inner side wall of the outer packaging layer 40 and the groove wall of the air groove, and therefore, the front plug section 10 of this embodiment can also be applied to the circular outer packaging layer 40.

[0103] The number of air grooves is not limited. It can be one or more. More refers to two or more of any number.

[0104] When the number of air grooves is more, the plurality of air grooves are distributed at intervals along the circumference of the front plug section 10. Of course, it can be equally spaced or spaced at irregular intervals.

[0105] Since the outer circumferential wall of the front plug section 10 is recessed to form the air groove, in this way, the aerosol generating article 100 is facilitated to form the outer circumferential air channel, the requirements for the outer packaging layer 40 are reduced, in this way, the outer packaging layer 40 meets the size of the medium section 20, the structure of the outer packaging layer 40 is more unified, the production cost of the aerosol generating article 100 is reduced, and at the same time, the appearance of the aerosol generating article 100 is more beautiful.

[0106] In a specific embodiment, the number of air grooves is more, and each air groove is uniformly distributed along the circumference of the front plug section 10. In this way, the airflow can flow to the medium section 20 relatively uniformly.

[0107] It should be noted that the shape of the air groove is not limited. Exemplarily, in some embodiments, in a plane perpendicular to the axial direction of the front plug section 10, the cross-sectional shape of the air groove is V-shaped, arc-shaped, or polygonal.

[0108] Specifically, the cross-sectional shape of the air groove is V-shaped, which means that in a plane perpendicular to the axial direction of the front plug section 10, the groove wall of the air groove is composed of two substantially straight sides.

[0109] Arc-shaped means that in a plane perpendicular to the axial direction of the front plug section 10, the groove wall of the air groove is composed of a substantially arc-shaped side.

[0110] The polygon can be a rectangle or a trapezoid, etc.

[0111] In this embodiment, the shape of the air groove is relatively more regular, which facilitates the opening of the air groove.

[0112] Of course, the cross section of the air groove is not limited to the above-mentioned shapes, and the sides constituting the air groove can also be a combination of various lines, so that the cross-sectional shape of the air groove in a plane perpendicular to the axial direction of the front plug section 10 is irregular.

[0113] In some embodiments, the air channel extends linearly along the axial direction of the front plug section 10 or spirally along the axial direction of the front plug section 10.

[0114] Specifically, the air channel extends linearly along the axial direction of the front plug section 10. In this embodiment, the peripheral air passage formed between the front plug section 10 and the outer wrapping layer 40 also extends linearly along the axial direction of the front plug section 10, and the airflow flows approximately linearly in the peripheral air passage. Thus, the peripheral air passage has a relatively low suction resistance.

[0115] The air channel extends spirally along the axial direction of the front plug section 10. The spiral extension means that the extension direction of the air channel can be decomposed into a linear direction along the axial direction of the front plug section 10 and a circumferential direction along the circumference of the front plug section 10. Thus, after the air channel and the outer wrapping layer 40 define the peripheral air passage, the length of the peripheral air passage can be appropriately increased under the condition that the axial length of the front plug section 10 is constant. In the case of condensate backflow of the aerosol, the risk of the condensate backflow of the aerosol into the accommodation cavity of the aerosol generating device can be further reduced.

[0116] Meanwhile, the spiral extension of the peripheral air passage can cause a gas turbulence phenomenon in the medium section 20 after the airflow flows through the peripheral air passage to the medium section 20. Thus, the extraction efficiency of the aerosol can be improved.

[0117] In an embodiment, the wrapping layer 11 is made of at least one of polylactic acid, fiber paper, polyethylene, and polyethylene terephthalate.

[0118] On the one hand, the wrapping layer 11 made of such a material has a certain toughness, so that the filling part can be wound to obtain the front plug section 10. On the other hand, the wrapping layer 11 made of such a material also has a certain strength, so that the probability of deformation of the front plug section 10 can be reduced, that is, the yield of the front plug section 10 can be improved.

[0119] In an embodiment, the thickness of the wrapping layer 11 ranges from 0.05 mm to 0.5 mm. For example, the thickness is 0.05 mm, 0.1 mm, 0.15 mm, 0.18 mm, 0.2 mm, 0.25 mm, 0.27 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.46 mm, or 0.5 mm, and the like.

[0120] When the thickness of the wrapping layer 11 is less than 0.05 mm, the wrapping layer 11 is weak in strength due to the low thickness, and is prone to deformation after wrapping the inner filling part, and the processing capacity of the front plug segment 10 is weak, which can cause the yield of the finished product to decrease. When the thickness of the wrapping layer 11 is greater than 0.5 mm, the thickness of the overlap part after forming is large (the overlap part is the overlap part of the first end and the last end of the wrapping layer 11), which can cause the appearance of the front plug segment 10 at the overlap part to be poor. Therefore, by setting the thickness of the wrapping layer 11 to be 0.05 mm-0.5 mm, the wrapping layer 11 can have certain toughness and strength, and the problem of the large thickness of the overlap part can be improved.

[0121] The material of the filling piece 12 is not limited. For example, various types of paper materials can be used.

[0122] In the related art, the filling piece is made of high molecular materials such as PLA (Polylactic acid), PET (Polyethyleneglycol terephthalate), and CA (Cellulose acetate). In the use process, the front plug segment is prone to melting, condensation, and collapse when contacting the heating piece, which can cause the passage in the front plug segment to be blocked, hinder the airflow from flowing through the passage to the medium segment to extract the aerosol, cause the draw resistance of the aerosol generating article to increase significantly during the suction process, and produce chemical odors, which can affect the use experience of the consumer.

[0123] The filling piece 12 made of paper material can work normally below 420℃ in the use process, and the heating temperature of the general aerosol generating device is 200-320℃. Therefore, the filling piece 12 is not prone to melting, condensation, and other phenomena when contacting the heating piece, which can reduce the probability of the passage 10a in the front plug segment 10 being blocked, thereby avoiding the phenomenon of the draw resistance increasing significantly during the suction process. In addition, the paper material will not produce chemical odors when heated. Furthermore, the filling piece 12 made of paper material has good adsorption effect, and the filling part formed by folding the filling piece 12 made of paper material into a pleated shape can further improve the adsorption effect of the filling part, and further improve the adsorption performance of the aerosol in the backflow process.

[0124] In an embodiment, the material of the filling piece 12 is fiber paper.

[0125] The filler 12 made of the fiber paper as the material makes the front plug segment 10 have better filling strength, and can improve the production qualified rate of the product in the subsequent processing process. Meanwhile, the connection strength between the front plug segment 10 and the medium segment 20 can be improved, and the problems such as bending and breaking of the aerosol generating article 100 caused by insufficient connection strength during use of the user can be improved.

[0126] In addition, during heating use, the fiber breath generated by the fiber paper can also be limited inside the fiber paper, thereby improving the user experience.

[0127] In an embodiment, the fiber paper has a grammage in the range of 20g / m 2 -140g / m 2 . For example, it can be 20g / m 2 , 30g / m 2 , 40g / m 2 , 50g / m 2 , 60g / m 2 , 70g / m 2 , 80g / m 2 , 90g / m 2 , 100g / m 2 , 110g / m 2 , 120g / m 2 , 130g / m 2 , 140g / m 2 , etc.

[0128] It should be noted that when the fiber paper has a low grammage, its processing performance is low, so that the yield of the front plug segment 10 is relatively low, and when the grammage is high, the paper odor generated by the filler 12 is heavy during subsequent use, which affects the user experience.

[0129] In this embodiment, the grammage of the fiber paper is controlled in the range of 20g / m 2 -140g / m 2 , so as to minimize the paper odor generated by the fiber paper while ensuring its processing performance. That is, the yield of the front plug segment 10 can be ensured, and the user experience can also be well considered.

[0130] In an embodiment, referring to Figure 8 and Figure 9 , the filler 12 includes a base layer 121 and a hardening layer 122 arranged in layers.

[0131] That is, the filler 12 is a composite material. It uses paper as the base layer 121, and after the hardening layer 122 is coated on the base layer 121 and dried, it becomes a high-strength fiber paper.

[0132] The base layer 121 is made of paper material, so that melting and condensation phenomena are less likely to occur. The hardening layer 122 is arranged on the base layer 121, so that the structural strength of the filler 12 can be improved, and the production qualification rate of the product in the subsequent processing process is improved.

[0133] In addition, the filler 12 with such a structure can also improve the connection strength between the front plug section 10 and the medium section 20, and improve the problems of bending and breaking of the aerosol generating article 100 caused by insufficient connection strength during use by the user. In the heating use process, the fiber odor generated by the base layer 121 can be blocked by the hardening layer 122, and the fiber odor can be limited in the filler 12, so as to improve the user experience.

[0134] In an embodiment, the material of the base layer 121 includes at least one of broadleaf fiber, coniferous fiber, hemp fiber, and bamboo fiber.

[0135] The broadleaf fiber, coniferous fiber, hemp fiber, and bamboo fiber are natural or extracted products, and the raw materials are relatively abundant, so that the base layer 121 can be mass-produced. At the same time, the base layer 121 made of such materials can be degraded after use by the user, and is more friendly to the environment.

[0136] In an embodiment, the hardening layer 122 is formed by coating a mixture of a hardening material and a solvent on the surface of the base layer 121. The hardening material includes at least one of cellulose, polysaccharide, polylactic acid, butylene terephthalate, and polyethylene terephthalate. The hardening layer 122 is formed by coating the mixture of the hardening material and the solvent on the surface of the base layer 121 and drying.

[0137] Specifically, one or more of cellulose, polysaccharide, polylactic acid, butylene terephthalate, and polyethylene terephthalate is used as a base material, and appropriate proportions are uniformly mixed according to the target requirements, so as to obtain the hardening material.

[0138] The solvent is a mixture of one or more of water, ethanol, and glycerol.

[0139] The hardening material and the solvent are mixed to obtain a uniform mixture. It can be understood that the hardening material and the solvent can be mixed by single or multiple times.

[0140] The filler 12 can be obtained by coating the hardening layer 122 on the surface of the base layer 121 and then heating and air drying. The structural strength of the filler 12 is improved, and the hardening layer 122 can block the fiber odor generated by the base layer 121, so as to limit the fiber odor in the filler 12, and improve the user experience.

[0141] In one embodiment, referring to Figure 8 and Figure 9 the number of the base layer 121 and the hardened layer 122 is one; or the number of the base layer 121 is one, and the number of the hardened layer 122 is two, and the two hardened layers 122 are respectively stacked on both sides of the base layer 121 along the thickness direction.

[0142] It should be noted that whether the base layer 121 is coated with the hardened layer 122 on one side along the thickness direction or both sides along the thickness direction can be determined based on the required strength of the filler 12. That is, the base layer 121 is coated with the hardened layer 122 on both sides along the thickness direction, so that the strength of the filler 12 is higher; when the base layer 121 is coated with the hardened layer 122 on one side along the thickness direction, the filler 12 meets the strength requirement, and the other side does not need to be coated with the hardened layer 122, thereby facilitating cost control.

[0143] In addition, when the base layer 121 is a low-lignin fiber such as cotton or hemp, the fiber odor generated by the base layer 121 itself is less, so a single layer of the hardened layer 122 can be used to improve the strength of the filler 12. When the base layer 121 is a medium-high lignin fiber paper such as broadleaf fiber or coniferous fiber, the fiber odor generated by the base layer 121 itself is more, so the base layer 121 can be coated with the hardened layer 122 on both sides along the thickness direction, thereby improving the strength of the filler 12 while reducing the release of fiber odor, i.e., limiting the fiber odor to the inside of the filler 12, thereby improving the user experience.

[0144] In one embodiment, the maximum distance between two points on the cross-sectional outer periphery of the front plug section 10 in a plane perpendicular to the axial direction of the front plug section 10 is d.

[0145] It should be noted that the front plug section 10 is matched by a cylinder, the front plug section 10 is placed in the cylinder, and the diameter of the cylinder is shrunk until the front plug section 10 cannot move in the horizontal plane in the cylinder. At this time, the diameter of the inner circle of the cylinder is d. For example, based on the front plug section 10 with an elliptical cross-sectional shape, d is the major axis size of the ellipse; based on the front plug section 10 with a rectangular cross-sectional shape, d is the size of the diagonal line of the rectangle.

[0146] Exemplarily, the front plug section 10 is in a cylindrical shape, and the diameter of the front plug section 10 is d.

[0147] In some embodiments, referring to Figure 3 and Figure 4The number of the filler 12 is one, and the width of the filler 12 ranges from 2d to 60d. For example, it can be 2d, 5d, 8d, 11d, 14d, 17d, 20d, 23d, 26d, 29d, 32d, 35d, 38d, 41d, 44d, 47d, 50d, 53d, 56d, 59d, 60d, and the like.

[0148] It should be noted that, in the plane perpendicular to the axial direction of the front plug segment 10, the cross section of the filler 12 presents a continuous line (for example Figure 3 as shown), and the width of the filler 12 is the total length of the line.

[0149] It should be noted that “2d” means that the width is 2 times the size of d, and “60d” and the like are also understood in the same way, that is, “60d” means that the width is 60 times the size of d.

[0150] In this embodiment, on the one hand, the width of the filler 12 is not less than 2d, so as to ensure that the wrapping layer 11 has sufficient filling amount, and reduce the probability of the filler 12 falling off from the wrapping layer 11, thereby being conducive to ensuring the user experience; on the other hand, the width of the filler 12 is also not greater than 60d, that is, the wrapping layer 11 does not have the problem of excessive filling amount, so as to effectively control the resistance of the front plug segment 10.

[0151] In addition, when the filler 12 is made of paper material, the problem of using a large amount of paper material for the front plug segment 10 does not occur, and in the process of use by the user, the problem of heavy paper odor of the aerosol generating article 100 and poor user experience can be effectively improved.

[0152] In other embodiments, the number of the filler 12 is multiple, and the sum of the widths of the fillers 12 ranges from 2d to 60d. For example, it can be 2d, 4d, 7d, 10d, 13d, 16d, 19d, 22d, 25d, 28d, 31d, 34d, 37d, 38d, 44d, 50d, 56d, 60d, and the like.

[0153] For example, when the filler 12 is multiple, each filler 12 is bent to form an integral whole, that is, each layered filler 12 is embossed to form a pleated shape, and then a plurality of embossed fillers 12 are stacked to form a filling part (for example Figure 5 as shown). Or, a plurality of fillers 12 are stacked together, and the overall thickness of the stacked fillers 12 is greater than the thickness of a single filler 12, and then the stacked fillers 12 are embossed to form a filling part in a pleated shape (for example Figure 6 as shown).

[0154] In this embodiment, on the one hand, the sum of the widths of each filler 12 is not less than 2d, thereby ensuring that the wrapping layer 11 has sufficient filling amount, reducing the probability of the filler 12 falling off from the wrapping layer 11, and thereby facilitating to ensure the user experience; on the other hand, the sum of the widths of each filler 12 is also not greater than 60d, i.e., the wrapping layer 11 does not have the problem of excessive filling amount, thereby being able to effectively control the draw resistance of the front plug segment 10.

[0155] Similarly, when the filler 12 is made of paper material, the problem of using a large amount of paper material for the front plug segment 10 does not occur, and in the process of use by the user, the problem of heavy paper odor of the aerosol generating article 100 and poor user experience can be effectively improved.

[0156] Whether the filler 12 is single or multiple can be determined with reference to the following:

[0157] It should be noted that the greater the compressibility, i.e., the better the elastic deformation performance of the filler 12, the more the filler 12 can recover to the original shape after use.

[0158] According to the compressibility of the filler 12 in the process of use (cross-sectional area deformation ratio), when the compressibility of the filler 12 in the process of use is greater than 0.75, although the inner hardening layer 122 is relatively hard, it can still shrink according to the use environment and recover to the original shape after use, thereby ensuring the appearance consistency of the product before and after use. When the compressibility of the filler 12 in the process of use is less than 0.75, if a single base layer 121 is still used, the filler 12 will produce plastic deformation. Therefore, when the compressibility of the filler 12 in the process of use is less than 0.75, multiple fillers 12 of the same specification or multiple fillers 12 composed of multiple base layers 121 and hardening layers 122 of different specifications can be used to ensure the appearance consistency of the filler 12 before and after use, thereby facilitating to improve the user experience.

[0159] In one embodiment, the filling rate of the filler 12 in the wrapping layer 11 ranges from 10% to 98%. For example, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90%, 95%, 98%, and the like.

[0160] The filling rate = ((sum of the widths of each filler × the thickness of the filler) - (the width of the wrapping layer × the thickness of the wrapping layer)) / the cross-sectional area of the front plug segment.

[0161] Please refer to Figures 2 to 4 The sum of the widths of each filler × the thickness of the filler refers to the sum of the cross-sectional areas of each filler 12 in the plane perpendicular to the axial direction of the aerosol generating article 100.

[0162] It can be understood that when the number of the filler 12 is one, the cross-sectional area of the filler 12 is the sum of the cross-sectional areas of each filler 12.

[0163] Referring to Figures 2 to 4 , the wrapping layer width x wrapping layer thickness refers to the cross-sectional area of the wrapping layer 11 in a plane perpendicular to the axial direction of the aerosol generating article 100.

[0164] Referring to Figures 2 to 4 , the cross-sectional area of the front plug segment refers to the cross-sectional area of the wrapping layer 11 outer wall surrounding area in a plane perpendicular to the axial direction of the aerosol generating article 100.

[0165] Alternatively, the filling rate = (sum of the widths of the fillers x the thickness of the fillers) / the cross-sectional area of the wrapping layer inner wall surrounding area.

[0166] Referring to Figures 2 to 4 , the cross-sectional area of the wrapping layer inner wall surrounding area refers to the cross-sectional area of the wrapping layer 11 inner wall surrounding area in a plane perpendicular to the axial direction of the aerosol generating article 100.

[0167] The specific value of the filling rate can be selected according to requirements.

[0168] It should be noted that when the filling rate is too small, the strength of the front plug segment 10 during use is low, and the aerosol generating article 100 is prone to deformation, breakage, and other phenomena during smoking, reducing the user's experience; when the filling rate is too large, the resistance of the front plug segment 10 during smoking is large, which is not conducive to the user to smoke aerosol.

[0169] The front plug segment 10 of the present embodiment controls the filling rate in the range of 10% to 98%, and the front plug segment 10 has a high structural strength, and at the same time will not produce too large resistance.

[0170] In an embodiment, referring to Figure 1 and Figure 2 , the aerosol generating article 100 further includes a base structure segment 30, the base structure segment 30 is arranged at the end of the medium segment 20 away from the front plug segment 10, and the base structure segment 30 includes at least one of a cooling segment 31, a filter segment 32, and a support segment 33.

[0171] Specifically, as Figure 2As shown, the base structure section 30 includes a cooling section 31, a support section 33, and a filter section 32. The support section 33 is arranged at one end of the medium section 20 axially away from the front plug section 10, one end of the cooling section 31 is arranged at one end of the support section 33 axially away from the medium section 20, and the filter section 32 is arranged at the other end of the cooling section 31. The support section 33 can connect and support the medium section 20 and the cooling section 31 at both ends, and the cooling section 31 is used to reduce the temperature of the aerosol, so that the temperature of the aerosol flowing out of the filter section 32 is appropriate, and the problem of "burning mouth" of the aerosol is avoided.

[0172] Of course, the positions of the cooling section 31 and the support section 33 can also be exchanged, that is, the cooling section 31 is connected to the end of the medium section 20 away from the front plug section 10, and the two ends of the support section 33 are respectively connected to the other end of the cooling section 31 and the filter section 32.

[0173] The structure of the support section 33 is not limited. For example, it can be a hollow paper tube structure or a hollow aluminum foil tube structure. The hollow paper tube structure and the hollow aluminum foil tube structure have good heat resistance and are not easy to deform under heat. After receiving heat conduction, they can still maintain their shape and increase the structural stability of the aerosol generating article 100.

[0174] Of course, it can also be a hollow acetate fiber structure, a hollow aluminum foil paper tube structure, a hollow silica gel structure, etc.

[0175] The cooling section 31 can be one of an acetate fiber tube or an aluminum foil tube, for example. In some embodiments, the inside of the cooling section 31 is formed into a porous structure. When the airflow carrying the aerosol passes through the cooling section 31, a Venturi effect occurs, that is, the flow rate of the fluid increases when passing through a reduced flow cross section, and the flow rate is inversely proportional to the flow cross section. The aerosol can pass through the cooling section 31 relatively quickly, so that the aerosol can be extracted relatively quickly. The cooling section 31 has a large specific surface area, which can achieve rapid cooling of the aerosol.

[0176] Of course, the cooling section 31 can also be one of a hollow acetate fiber or a corrugated paper tube.

[0177] The outer packaging layer 40 can wrap the outer periphery of the base structure section 30.

[0178] It should be noted that when the outer packaging layer 40 wraps the entire circumferential outer surface of the filter section 32, the user can directly hold the outer packaging layer 40 to use the aerosol. When the outer packaging layer 40 wraps part of the circumferential outer surface of the filter section 32, the user can directly hold the part of the filter section 32 exposed outside the outer packaging layer 40 to smoke the aerosol. Of course, the user can also wrap a mouthpiece around the filter section 32 to smoke the aerosol through the mouthpiece.

[0179] It should be noted that the outer packaging layer 40 can be one layer, that is, one outer packaging layer 40 wraps the medium segment 20, the front plug segment 10 and the base structure segment 30 at the same time.

[0180] Of course, the outer packaging layer 40 can also be multi-layered. Any one of the medium segment 20, the front plug segment 10 and the base structure segment 30 can be wrapped by at least one outer packaging layer 40 to obtain a multi-segment structure; or at least two of the medium segment 20, the front plug segment 10 and the base structure segment 30 are wrapped by at least one outer packaging layer 40 to obtain a multi-segment structure, and the multi-segment structure is wrapped by one or more outer packaging layers 40 to obtain the aerosol generating article 100.

[0181] In an embodiment, referring to Figure 1 and Figure 2 , the length of the front plug segment 10 is 1 / 12-1 / 3 of the length of the aerosol generating article 100. For example, 1 / 12, 1 / 11, 1 / 10, 1 / 9, 1 / 8, 1 / 7, 1 / 6, 1 / 5, 1 / 4, 1 / 3, and the like.

[0182] On the one hand, the ratio of the axial dimension L1 of the front plug segment 10 to the axial dimension L2 of the aerosol generating article 100 is controlled to be not less than 1 / 12, so that the front plug segment 10 has a long enough size to ensure the filtering and adsorption effect of the front plug segment 10 on the backflow or reflux aerosol, and ensure the cleaning effect in the containing cavity of the aerosol generating device. At the same time, the front plug segment 10 has a suitable size, which is convenient for processing, that is, the processing performance is relatively good, and the yield of the front plug segment 10 in the production process is improved.

[0183] On the other hand, the ratio of the axial dimension L1 of the front plug segment 10 to the axial dimension L2 of the aerosol generating article 100 is controlled to be not more than 1 / 3, so that the resistance of the front plug segment 10 during the process of sucking the aerosol can be controlled within a suitable range, and the resistance of the front plug segment 10 will not be too large, that is, the influence on the process of the user sucking the aerosol is small, which effectively avoids the problem of the decline of the user experience.

[0184] Further, in some embodiments, the ratio of the axial dimension L1 of the front plug segment 10 to the axial dimension L2 of the aerosol generating article 100 is in the range of 1 / 10-1 / 4. For example, 1 / 10, 2 / 19, 1 / 9, 2 / 17, 1 / 8, 2 / 15, 2 / 7, 2 / 13, 1 / 6, 2 / 11, 1 / 5, 2 / 9, 1 / 4, and the like. In this way, the front plug segment 10 has a more suitable size.

[0185] Referring to Figure 13In a third aspect, the embodiments of the present application provide a manufacturing method of the front plug section 10. It should be noted that the manufacturing method can be applied to manufacture the front plug section 10 of any of the embodiments of the present application.

[0186] The manufacturing method comprises:

[0187] S100: embossing the filler to obtain a filler in a pleated form.

[0188] S200: gathering and forming the filler and the wrapping layer to obtain the front plug section.

[0189] It should be noted that the manufacturing method of the front plug section 10 of the present embodiment is applicable to Figures 10 to 12 the production line of any of the embodiments.

[0190] Embossing is a processing technology for forming a specific pattern and texture on the surface of a material by using a concave-convex mold. Under the action of certain pressure and temperature, the material can be deformed by embossing, and equidistant creases / cracks can be generated, and stress / resilience can be generated in the paper during the creasing process. The stress and resilience generated after the paper is formed later make the filler 12 uniformly distributed inside the wrapping layer 11.

[0191] Referring to Figures 10 to 12 , the production line comprises an embossing device 3 and a gathering device 4.

[0192] After the base layer paper 1 is processed into the filler 12, the filler 12 generates creases and obtains a filler in a pleated form after passing through the embossing device 3.

[0193] The filler and the wrapping layer paper 2 enter the gathering device 4, so as to be gathered and formed to obtain the front plug section 10.

[0194] In an embodiment, the filler and the wrapping layer are gathered and formed to obtain the front plug section, and specifically comprising:

[0195] The filler and the wrapping layer are gathered and formed into a desired shape, for example, a cylindrical structure or a non-cylindrical structure, to obtain a filler in a pleated form.

[0196] It should be noted that the manufacturing method of the front plug section of the present embodiment is applicable to Figure 11 or Figure 12 the production line shown in the above.

[0197] That is to say, in this embodiment, the filler is gathered into a filler in a pleated form, and the wrapping layer 11 covers the outer periphery of the filler to realize shaping. In this way, the front plug section 10 has lower requirements for the structural strength of the wrapping layer 11, and the range of the material selection of the wrapping layer 11 is larger.

[0198] The material of the filler 12 is not limited. For example, it can be various types of paper.

[0199] In the related art, the filler is made of high molecular materials such as PLA (Polylactic acid), PET (Polyethyleneglycol terephthalate), CA (Cellulose acetate), etc. In the use process, the front plug section is easy to melt, condense, collapse, etc. when contacting with the heating element, which causes the internal passage of the front plug section to be blocked, hinders the airflow to flow through the passage to the medium section to extract the aerosol, and causes the resistance of the aerosol generating article to be obviously increased during the suction process, and chemical odor is generated, affecting the user experience.

[0200] The filler 12 made of paper material can work normally below 420°C in the use process, and the heating temperature of the general aerosol generating device is 200-320°C. Therefore, the filler 12 is not easy to melt, condense, etc. when contacting with the heating element, which reduces the probability of the internal passage 10a of the front plug section 10 being blocked, thereby avoiding the phenomenon of the resistance being obviously increased during the suction process. In addition, the paper material will not generate chemical odor when heated. In addition, the filler 12 made of paper material has good adsorption effect, and the filler 12 made of paper material is folded to form a crumpled filler, which further improves the adsorption effect of the filler and further improves the adsorption performance of the aerosol in the backflow process.

[0201] In an embodiment, the material of the filler 12 is fiber paper.

[0202] The filler 12 made of fiber paper enables the front plug section 10 to have good filling strength, which improves the production qualification rate of the product in the subsequent processing process. At the same time, the connection strength between the front plug section 10 and the medium section 20 is improved, which improves the problems of the aerosol generating article 100 being bent and broken due to insufficient connection strength during the use process.

[0203] In addition, the fiber odor generated by the fiber paper can be limited in the fiber paper during the heating and use process, thereby improving the user experience.

[0204] In an embodiment, the grammage of the fiber paper ranges from 20 g / m 2 to 140 g / m 2 . For example, it can be 20 g / m 2 , 30 g / m 2 , 40 g / m 2 , 50 g / m 2 , 60 g / m 2 , 70 g / m 2, 80g / m 2 , 90g / m 2 , 100g / m 2 , 110g / m 2 , 120g / m 2 , 130g / m 2 , 140g / m 2 and so on.

[0205] It should be noted that when the grammage of the fiber paper is low, the processing performance is low, so that the yield of the front plug section 10 is relatively low, and when the grammage is high, the paper odor generated by the filler 12 is heavy in the subsequent use process, affecting the user experience.

[0206] In this embodiment, the grammage of the fiber paper is controlled in the range of 20g / m 2 - 140g / m 2 , so as to minimize the paper odor generated by the fiber paper while ensuring the processing performance of the fiber paper. That is, the yield of the front plug section 10 can be ensured, and the user experience can also be better considered.

[0207] In an embodiment, the filling part and the wrapping layer 11 are gathered to form the front plug section 10, which specifically includes:

[0208] It should be noted that the manufacturing method of the front plug section of the embodiment is suitable for Figures 10 to 12 the production line of any embodiment.

[0209] That is, in this embodiment, the filling part is wrapped by the wrapping layer 11, and the filling part is limited by the shape of the wrapping layer 11, so as to be gathered under the limitation of the wrapping layer 11.

[0210] In this embodiment, the wrapping layer 11 with high hardness can be selected. For example, it is corrugated paper. In this way, the probability of damage of the wrapping layer 11 is reduced in the gathering process.

[0211] The wrapping layer 11 wraps the filling part, which reduces the shaping requirement of the filling part. The filling part can be wrapped by the wrapping layer 11 and deformed.

[0212] The manufacturing method of the front plug segment 10 of the embodiment of the present application first embosses the filler 12 to obtain a filler portion in a pleated form. Then, the filler portion and the wrapping layer 11 are gathered to form the front plug segment 10. That is, the front plug segment 10 is composed of the wrapping layer 11 and the filler portion formed by embossing the layered filler 12 and in a pleated form, and the filler portion is arranged in the wrapping layer 11 to form a channel 10a extending from one end to the other end of the front plug segment 10 in the wrapping layer 11. The airflow from the outside can flow to the medium segment 20 through the channel 10a, thereby reducing the suction resistance of the front plug segment 10 to the suction of the aerosol, and further improving the user's experience. That is, after the front plug segment 10 of the embodiment of the present application is used in the aerosol generating article 100, the probability of the medium segment 20 falling out of the outer packaging layer 40 can be reduced, and at the same time, the front plug segment 10 will not generate too much suction resistance to the suction of the aerosol. In addition, after the suction is completed, the accommodation cavity will cause the aerosol to backflow due to the negative pressure generated during the suction process, and the filler portion in a pleated form has good adsorption effect and can adsorb the aerosol during the backflow process, which is beneficial to improve the problem that the accommodation cavity is polluted by the aerosol and is not easy to clean, and is beneficial to improve the problem of flavor mixing that may be caused by suctioning different flavored aerosol generating articles 100.

[0213] In an embodiment, before the filler is embossed to obtain a filler portion in a pleated form, the manufacturing method comprises:

[0214] The hardened material and the solvent are mixed and then coated on the surface of the base layer 121 to form the filler 12.

[0215] It should be noted that the manufacturing method of the front plug segment 10 of the embodiment is applicable to Figure 11 or Figure 12 the production line shown in the figure.

[0216] Here, please refer to Figure 8 and Figure 9 , the filler 12 comprises a base layer 121 and a hardened layer 122 arranged in layers.

[0217] That is, the filler 12 is a composite material. It uses paper as the base layer 121, and after the hardened layer 122 is coated on the base layer 121 and dried, it becomes a high-strength fiber paper.

[0218] The base layer 121 uses paper material, so it is not easy to melt and condense. The hardened layer 122 is arranged on the base layer 121, so as to improve the structural strength of the filler 12 and further improve the production qualification rate of the product in the subsequent processing process.

[0219] In addition, the filler 12 with such a structure can also improve the connection strength between the front plug segment 10 and the medium segment 20, improve the problem of bending and breaking of the aerosol generating article 100 caused by insufficient connection strength during use by the user, and limit the fiber odor generated by the base layer 121 during heating use through the hardening layer 122, so that the fiber odor can be limited in the filler 12, thereby improving the user experience.

[0220] In an embodiment, the material of the base layer 121 includes at least one of broadleaf fiber, coniferous fiber, hemp fiber, and bamboo fiber.

[0221] The broadleaf fiber, coniferous fiber, hemp fiber, and bamboo fiber are all natural or extracted products, and the raw materials are relatively abundant, so that the base layer 121 can be mass-produced, and at the same time, the base layer 121 made of such materials can be degraded after use by the user, which is more friendly to the environment.

[0222] Please refer to Figure 11 and Figure 12 The spraying device 7 is arranged downstream of the base layer paper 1, and the mixture of the hardening layer 122 can be uniformly coated on the base layer 121 (coated on the base layer paper 1 on the production line) by the spraying device 7, and the hardening layer 122 can better coat the side of the base layer 121 in the thickness direction.

[0223] In an embodiment, please refer to Figure 8 and Figure 9 The number of the base layer 121 and the hardening layer 122 is one layer; or the number of the base layer 121 is one layer, and the number of the hardening layer 122 is two layers, and the two layers of the hardening layer 122 are respectively arranged on both sides of the base layer 121 in the thickness direction.

[0224] It should be noted that whether the base layer 121 is coated with the hardening layer 122 on one side in the thickness direction or on both sides in the thickness direction can be determined based on the required strength of the filler 12. That is, the base layer 121 is coated with the hardening layer 122 on both sides in the thickness direction, so that the strength of the filler 12 is higher; when the base layer 121 is coated with the hardening layer 122 on one side in the thickness direction, the filler 12 meets the strength requirement, and the other side does not need to be coated with the hardening layer 122, thereby facilitating cost control.

[0225] In addition, when the base layer 121 is a low-lignin fiber such as cotton or hemp, the base layer 121 itself produces less fiber odor, so a single layer of the hardening layer 122 can be used to improve the strength of the filler 12. When the base layer 121 is a medium or high-lignin fiber paper such as a broadleaf fiber or a coniferous fiber, the base layer 121 itself produces more fiber odor, so the hardening layer 122 can be coated on both sides of the base layer 121 in the thickness direction, thereby improving the strength of the filler 12 while reducing the release of fiber odor, i.e., limiting fiber odor to the inside of the filler 12, thereby improving the user experience.

[0226] In one embodiment, before the hardening material and the solvent are mixed and coated on the surface of the base layer 121 to form the filler 12, the manufacturing method includes:

[0227] Mixing one or more of cellulose, polysaccharide, polylactic acid, butylene terephthalate, and polyethylene terephthalate to obtain a hardening material;

[0228] Mixing one or more of water, ethanol, and glycerol to obtain a solvent.

[0229] It should be noted that the order of obtaining the hardening material and the solvent is not limited. One step can be completed first, and then the other step can be completed. Alternatively, the two steps can be performed simultaneously. After the hardening material and the solvent are uniformly mixed, a mixture of the hardening layer 122 is obtained.

[0230] The hardening material and the solvent are mixed to obtain a uniform mixture. It can be understood that the hardening material and the solvent can be mixed in one or more times.

[0231] In one embodiment, after the hardening material and the solvent are mixed and coated on the surface of the base layer 121 to form the filler 12, the manufacturing method includes heating and drying the filler 12.

[0232] It should be noted that the manufacturing method of the front plug section 10 of the present embodiment is applicable to Figure 11 the production line shown in FIG. 1.

[0233] Referring to Figure 11 The drying device 6 is arranged downstream of the spraying device 7 and upstream of the gathering device 4. After the mixture of the hardening layer 122 is coated on the base layer paper 1, the filler 12 is heated and dried by the drying device 6. The mixture of the hardening layer 122 can be quickly dried and shaped, so that the range of the amount of solvent added is wider, and the quality of the product is easier to control.

[0234] In one embodiment, after the filling portion and the wrapping layer 11 are gathered to form the front plug segment 10, the manufacturing method includes: heating and drying the front plug segment 10.

[0235] It should be noted that the manufacturing method of the front plug segment 10 in this embodiment is applicable to Figure 12 the production line shown.

[0236] The drying device 6 is located downstream of the gathering device 4. After the base layer paper material 1 is embossed and gathered with the wrapping layer paper material 2 to form a shape, the base layer paper material 1 is heated and dried. This manufacturing method is used when the hardening material is more volatile or the amount of solvent added is higher. Because the proportion of the hardening material is small, it can be directly volatilized to form a shape, and the shape is fixed after direct forming.

[0237] In one embodiment, the drying temperature of the heating and drying is between 80°C and 140°C. For example, it can be 80°C, 85°C, 90°C, 95°C, 100°C, 105°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 140°C, and the like.

[0238] The drying device 6 can be manually controlled or automatically controlled to control the drying temperature within the range.

[0239] The drying temperature is controlled to be between 80°C and 140°C. Within this temperature range, the drying temperature is more suitable. That is, the drying temperature is not too low, so as to ensure the drying efficiency and improve the processing efficiency; of course, the drying temperature is not too high, so as to reduce the probability of cracking of the hardening layer 122 and burning of the paper during the drying process, and improve the product yield.

[0240] In one embodiment, after the filling portion and the wrapping layer 11 are gathered to form the front plug segment 10, the manufacturing method includes:

[0241] The front plug segment 10 is cut.

[0242] It should be noted that the manufacturing method of the front plug segment 10 in this embodiment is applicable to Figures 10 to 12 the production line of any embodiment.

[0243] Please refer to Figures 10 to 12 The front plug segment 10 can be cut to a set length by the cutting device 5. In this way, the front plug segment 10 of the set length can meet the use requirements of the aerosol generating article 100.

[0244] It can be understood that the specific value of the set length is not limited, and the set length can be set according to the use requirements of the aerosol generating article 100.

[0245] The slitting device 5 generally comprises a slitting tool which slits the front plug segment 10 by physical contact or non-physical contact.

[0246] Physical contact refers to slitting the front plug segment 10 by direct contact of the slitting tool with the front plug segment 10. For example, the slitting tool can be a rotary cutter, a cutting blade, a cutting wire, a roller cutter or an extruder.

[0247] Non-physical contact refers to slitting the front plug segment 10 by the slitting tool without direct contact with the front plug segment 10. For example, the slitting tool releases a laser, a plasma, an air knife or a water jet to cut the front plug segment 10.

[0248] The following three specific embodiments are described:

[0249] First embodiment

[0250] Methyl cellulose, tamarind polysaccharide and PLA (Polylactic acid) are mixed in a ratio of 55:25:20, then placed in warm water at 60°C, stirred and mixed to obtain the mixture of the hardening layer 122, and then the mixture of the hardening layer 122 is coated to 60g / m 2 The surface of the base layer paper material 1 of the broadleaf fiber material is dried at 110°C to the appropriate moisture to obtain the required filler 12, and then the filler 12 is slitted to 4d times the width (28mm), and then embossed and gathered to form an outer wrapping of 0.2mm wrapping layer 11 to obtain a front plug segment 10 with d = 7mm.

[0251] The manufacturing method of the front plug segment 10 of this embodiment is suitable for Figure 12 the production line shown.

[0252] Second embodiment

[0253] Microcrystalline cellulose, pullulan and sodium alginate are mixed in a ratio of 65:20:15, then placed in ethanol at 60°C, stirred and mixed to obtain the mixture of the hardening layer 122, and then the mixture of the hardening layer 122 is coated to 40g / m 2 The surface of the base layer paper material 11 of the hemp pulp fiber material is dried at 90°C to the appropriate moisture to obtain the required filler 12, and then the filler 12 is slitted to 35d times the width (280mm), and then embossed and gathered to form an outer wrapping of 0.4mm wrapping layer 11 to obtain a front plug segment 10 with d = 8mm.

[0254] The manufacturing method of the front plug segment 10 of this embodiment is suitable for Figure 12 the production line shown.

[0255] Third embodiment

[0256] The microcrystalline cellulose, carboxymethyl cellulose and congealing polysaccharide are placed in a water solution at 70°C in a ratio of 75:20:5, and the mixture of the hardening layer 122 is obtained after stirring and mixing. The mixture of the hardening layer 122 is coated on the surface of the base layer paper material 11 of the bamboo fiber material 65 g / m 2 The filling piece 12 is then embossed and gathered to form a d = 7.8 mm front plug section 10 after being wrapped with a 0.6 mm wrapping layer 11 and dried at 110°C.

[0257] The manufacturing method of the front plug section 10 of this embodiment is suitable for the production line shown in Figure 11 .

[0258] The above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the specification of the present application. In particular, the technical features mentioned in each embodiment can be combined in any way as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A pre-plug section, applied to aerosol-generating products, characterized in that, The fore-plug section includes a wrapping layer and a filling portion. The filling portion is formed by repeatedly bending a layered filling material and is in a pleated shape. The filling portion is disposed within the wrapping layer to construct a channel extending from one end of the fore-plug section to the other end within the wrapping layer.

2. The fore-plug section according to claim 1, characterized in that, The front plug section is cylindrical, and the diameter of the front plug section is d; The number of fillers is one, and the width of the filler ranges from 2d to 60d; or, The number of fillers is multiple, and the sum of the widths of each filler ranges from 2d to 60d.

3. The fore-plug section according to claim 1, characterized in that, The filler is made of fiber paper, characterized in that the basis weight of the fiber paper is in the range of 20 g / m³. 2 -140g / m 2 .

4. The fore-plug section according to claim 1, characterized in that, The filler includes a base layer and a hardening layer stacked together.

5. The forepump section according to claim 4, characterized in that, The number of base layers and hardening layers is one; or, the number of base layers is one, and the number of hardening layers is two, with the two hardening layers respectively stacked on both sides of the base layer along the thickness direction.

6. The forepump section according to claim 4, characterized in that, The base layer is made of at least one of broadleaf fiber, softleaf fiber, hemp fiber, and bamboo fiber.

7. The forepump section according to claim 4, characterized in that, The hardening layer is formed by coating the substrate surface with a mixture of hardening material and solvent. The hardening material includes at least one of cellulose, polysaccharides, polylactic acid, butylene terephthalate, and polyethylene terephthalate.

8. The fore-plug section according to claim 1, characterized in that, The material of the wrapping layer includes at least one of polylactic acid, fiber paper, polyethylene, and polyethylene terephthalate.

9. The fore-plug section according to claim 1, characterized in that, The thickness of the wrapping layer ranges from 0.05mm to 0.5mm.

10. The fore-plug section according to claim 1, characterized in that, The filler has a fill rate of 10%-98% within the wrapping layer.

11. An aerosol-generating article, said aerosol-generating article having a distal lip end and a proximal lip end, characterized in that, include: The medium section is used to generate aerosols; The fore-plug section according to any one of claims 1-10 is disposed at one end of the medium section and located at the distal lip end of the aerosol generating article.

12. The aerosol-generating article according to claim 11, characterized in that, The aerosol-generating product further includes a basic structural section, which is located at the end of the medium section away from the front plug section. The basic structural section includes at least one of a support section, a filter section, and a cooling section.

13. The aerosol-generating article according to claim 11, characterized in that, The length of the fore-plug section is 1 / 12 to 1 / 3 of the length of the aerosol-generated product.

14. A method for manufacturing a front plug section, characterized in that, include: The filler is embossed to obtain a pleated filler portion; The filling part and the wrapping layer are brought together to form a front plug section.

15. The manufacturing method according to claim 14, characterized in that, Before embossing the filler to obtain a wrinkled filler portion, the manufacturing method includes: The hardening material and solvent are mixed and then coated onto the surface of the base layer to form the filler.

16. The manufacturing method according to claim 15, characterized in that, Before coating the hardening material and solvent onto the substrate surface to form the filler, the manufacturing method includes: The hardening material is obtained by mixing one or more of the following: cellulose, polysaccharides, polylactic acid, butylene terephthalate, and polyethylene terephthalate. A solvent is obtained by mixing one or more of water, ethanol, and glycerol.

17. The manufacturing method according to claim 15, characterized in that, After uniformly mixing the hardening material and solvent and coating it onto the surface of the substrate to form the filler, the manufacturing method includes: heating and drying the filler; or, After the filling part and the wrapping layer are gathered and shaped to obtain the front plug section, the manufacturing method includes: heating and drying the front plug section.

18. The manufacturing method according to claim 17, characterized in that, The drying temperature for the heat drying process is between 80°C and 140°C.

19. The manufacturing method according to claim 14, characterized in that, After obtaining the fore-end section, the manufacturing method includes: The fore-end section is cut into segments.

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