Heat-not-burn product and manufacturing process therefor

Abstract

Involved are a heat-not-burn product (10) and a manufacturing process therefor. The heat-not-burn product (10) comprises a vapor generating matrix (1), a supporting section (2), a filtering section (3), a first coating layer (4), and a second coating layer (5); the supporting section (2) is provided with an air flow channel (200) communicated with the vapor generating matrix (1) and the supporting section (2); the vapor generating matrix (1) and the filtering section (3) are respectively arranged at two ends of the supporting section; the first coating layer (4) wraps the vapor generating matrix (1) and the supporting section (2) together, and the second coating layer (5) wraps the supporting section (2) and the filtering section (3) together; and the vapor generating matrix (1) comprises a columnar solid matrix body (11), and micropores are dispersed on the solid matrix body (11). The heat-not-burn product (10) uses the solid matrix body (11) as the vapor generating matrix (1), which is conductive to producing the heat-not-burn product (10) by using a rolling device, the process difficulty is low, and the objective of reducing the cost and improving the efficiency can be achieved.

Description

Heat-not-burn products and their manufacturing process Technical Field

[0001] The present invention relates to the field of heat-not-burn products, and more particularly to a heat-not-burn product and a manufacturing process thereof. Background Art

[0002] In traditional heat-not-burn products, the smoking segment usually uses smoking raw materials such as particles, tobacco shreds, and tobacco flakes. Therefore, it is necessary to first use a rolling process to roll the filter segment and the rolling paper, and then fill the smoking raw materials. The filling process is complicated and inefficient, and it is necessary to purchase filling equipment and rolling equipment at the same time. The equipment cost and production cost are relatively high. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a heat-not-burn product and a manufacturing process thereof in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the present invention to solve the technical problem is: constructing a heat-not-burn product, including a smoke-generating substrate, a support section, a filter section, a first coating layer, and a second coating layer;

[0005] The support section is provided with an air flow channel connecting the smoking substrate and the support section. The smoking substrate and the filter section are respectively arranged at both ends of the support section. The first coating layer coats the smoking substrate and the support section together, and the second coating layer coats the support section and the filter section together.

[0006] The smoking substrate comprises a columnar solid substrate body, on which micropores are distributed.

[0007] In some embodiments, a cooling hole extending through to the outside is provided on the section where the supporting section is located.

[0008] In some embodiments, the cooling hole passes through the first cladding layer and / or the second cladding layer and is connected to the air flow channel of the support section.

[0009] In some embodiments, the cooling hole is arranged on the supporting section, the first cladding layer and the second cladding layer are spaced apart in the axial direction of the heat-not-burn product, and the cooling hole is located in the interval between the first cladding layer and the second cladding layer.

[0010] In some embodiments, the cooling holes are distributed along the circumference.

[0011] In some embodiments, the distance from the cooling hole to the filter section is smaller than the distance from the cooling hole to the smoking substrate.

[0012] In some embodiments, the second covering layer at least partially covers the outer surface of the first covering layer.

[0013] In some embodiments, the air flow channel is located at the periphery and / or the middle of the supporting segment.

[0014] In some embodiments, the solid matrix body includes a downstream end and an upstream end located at two axial ends thereof, and the downstream end is opposite to the support section. The solid matrix body is provided with at least one gas collection hole extending along its axial direction, and the gas collection hole at least passes through the downstream end. The micropores are connected to each other and the gas collection holes are connected to collect the aerosol in the micropores into the gas collection hole.

[0015] In some embodiments, the heat-not-burn product further includes a blocking piece located at one end of the smoking substrate away from the supporting section, and the first coating layer wraps around the outer circumference of the smoking substrate, the supporting section, and the blocking piece.

[0016] Another object of the present invention is to provide a process for producing the heat-not-burn product, comprising the following steps:

[0017] S1. placing the smokable substrate at one axial end of the support segment, and wrapping the first wound substrate around the smokable substrate and the outer circumference of the support segment to form a pre-assembled body;

[0018] S2. The filter segment is arranged at one end of the assembly provided with the support segment, and a second rolled substrate is wrapped around the outer circumference of the pre-assembly and the filter segment.

[0019] In some embodiments, in step S1, when wrapping the first rolled substrate, a sealing piece is first placed on the end of the smoking substrate facing away from the supporting section, and then the first rolled substrate is simultaneously wrapped around the sealing piece, the smoking substrate and the outer circumference of the supporting section.

[0020] The implementation of the heat-not-burn product and its production process of the present invention has the following beneficial effects: the heat-not-burn product uses a solid matrix body as a smoke-generating matrix, which is conducive to the use of rolling equipment to produce the heat-not-burn product, and the process difficulty is low, thereby achieving the purpose of reducing costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments, in which:

[0022] FIG1 is a schematic diagram of the three-dimensional structure of a heat-not-burn product in an embodiment of the present invention;

[0023] FIG2 is a schematic cross-sectional view of the heat-not-burn product in FIG1 ;

[0024] FIG3 is a cross-sectional view of a heat-not-burn product with a blocking member in another embodiment;

[0025] FIG4 is an electron microscope image of the smoking material of the smoking matrix;

[0026] FIG5 is a schematic diagram of the first embodiment of the smoke-generating substrate gas collection hole with different shapes at both ends;

[0027] FIG6 is a schematic diagram of a second embodiment in which the downstream end of the gas collecting hole of the smokable substrate is larger than the upstream end;

[0028] FIG7 is a schematic diagram of a third embodiment in which the downstream end of the gas collecting hole of the smokable substrate is smaller than the upstream end;

[0029] FIG8 is a schematic diagram of the gas collecting holes of the smokable substrate in the fourth embodiment combined with the second and third embodiments;

[0030] FIG9 is a schematic diagram of the first rolled substrate covering the smokable substrate and the support segment in step S1;

[0031] FIG10 is a flow chart of the manufacturing process of heat-not-burn products. DETAILED DESCRIPTION

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, specific embodiments of the present invention are now described in detail with reference to the accompanying drawings.

[0033] As shown in Figures 1 and 2, a heat-not-burn product 10 in a preferred embodiment of the present invention includes a smokable substrate 1, a support section 2, a filter section 3, a first coating layer 4, and a second coating layer 5. The support section 2 is provided with an airflow channel 200 connecting the smokable substrate 1 and the support section 2. The smokable substrate 1 and the filter section 3 are disposed at opposite ends of the support section 2. The first coating layer 4 coats and connects the smokable substrate 1 and the support section 2, while the second coating layer 5 coats and connects the support section 2 and the filter section 3. The two coating layers connect the smokable substrate 1, the support section 2, and the filter section 3, forming the heat-not-burn product 10.

[0034] The smokable substrate 1 comprises a columnar solid substrate body 11, dotted with micropores. The solid substrate body 11 includes a downstream end A and an upstream end B located axially opposite the support section 2. The downstream end A and the upstream end B are named based on the aerosol flow direction. During inhalation, the aerosol generated by the smokable substrate 1 is transported from upstream to downstream. The downstream end A is the proximal lip end, and the upstream end B is the distal lip end. Because the solid substrate body 11 is used, only rolling equipment is required to form the heat-not-burn product, reducing costs and simplifying the process.

[0035] The solid matrix body 11 is provided with a gas collecting hole 12 extending along its axial direction. The gas collecting hole 12 at least passes through the downstream end A. The micropores are connected to each other and to the gas collecting hole 12 to collect the aerosol in the micropores to the gas collecting hole 12 .

[0036] The airflow channel 200 is located in the middle of the support section 2, or can be located on the periphery of the support section 2, or can be provided on both the periphery and the middle of the support section, allowing the aerosol to flow toward the filter section 3. The section where the support section 2 is located is provided with a cooling hole 21 extending to the outside. When the user inhales, external air can enter the support section 2 through the cooling hole 21 and mix with the aerosol in the support section 2, thereby lowering the temperature of the aerosol. The size of the cooling hole 21 can be adjusted as needed to adjust the amount of air entering to meet the cooling requirements of the user to reduce the temperature to an appropriate level, in line with the user's inhalation habits, and to prevent the aerosol from being too hot and burning the mouth.

[0037] Preferably, cooling holes 21 are distributed around the side wall of the support section 2 to allow external air to flow into the support section 2 from different directions, so that the air and aerosol can be fully mixed, thereby improving the uniformity of cooling.

[0038] To allow the support section 2 to also function as a pre-storage aerosol, generated aerosol is first stored in the support section 2. The next time you inhale, the stored aerosol is inhaled first, and the generated new aerosol flows back into the support section 2 with the airflow for storage, thereby also cooling the aerosol. Furthermore, to prevent the pre-stored aerosol from overflowing during its dwelling phase, the distance from the cooling holes 21 to the filter section 3 can be made smaller than the distance from the cooling holes 21 to the smog-generating substrate 1. This prevents the aerosol stored between the cooling holes 21 and the smog-generating substrate 1 from overflowing. Furthermore, the air can be mixed with the pre-stored aerosol before flowing to the filter section 3.

[0039] In some embodiments, the second covering layer 5 at least partially covers the outer surface of the first covering layer 4, and may cover the end of the first covering layer 4, or may cover the entire first covering layer 4. Furthermore, when the cooling hole 21 is not covered by the second covering layer 5, the cooling hole 21 passes through the first covering layer 4 and communicates with the air flow channel 200 of the support section 2. When the cooling hole 21 is not covered by the first covering layer 4, the cooling hole passes through the second covering layer 5 and communicates with the air flow channel 200 of the support section 2. If the cooling hole 21 is covered by both the first covering layer 4 and the second covering layer 5, the cooling hole 21 passes through the first covering layer 4 and the second covering layer 5 and communicates with the air flow channel 200 of the support section 2.

[0040] It is understandable that the cooling holes 21 may be provided only on the support section 2, and the first and second cladding layers 4 and 5 may be staggered, so that the cooling holes 21 are exposed, allowing external gas to enter the support section 2 through the cooling holes 21. That is, the first and second cladding layers 4 and 5 are spaced apart in the axial direction of the heat-not-burn product, and the cooling holes 21 are located in the gap between the first and second cladding layers 4 and 5.

[0041] In some embodiments, as shown in FIG3 , the heat-not-burn product 10 further includes a blocking member 6 located at an end of the smokable substrate 1 away from the support segment 2. A first coating layer 4 covers the smokable substrate 1, the support segment 2, and the outer circumference of the blocking member 6 to prevent the smokable material in the smokable substrate 1 from escaping. The blocking member 6 can be formed of cellulose acetate and has a certain amount of porosity, allowing air to pass through the blocking member 6 and enter the smokable substrate 1. It is understood that the blocking member 6 can also be made of an airtight material.

[0042] Typically, the cross-sectional shape of the air collection holes 12 is at least one of an elliptical, circular, polygonal, and irregular shape. There can be one or more air collection holes 12. When there is only one air collection hole 12, it can be a through hole or a blind hole. When there are multiple air collection holes 12, all of them can be through holes, all of them can be blind holes, or some of them can be through holes and some can be blind holes. In the heat-not-burn cigarette of this embodiment, the downstream end A of the air collection hole 12 opens opposite the filter section 3, allowing aerosol to flow from the air collection hole 12 to the support section 2 and the filter section 3.

[0043] Unlike the traditional filling method of tobacco particles, the micropores of the solid matrix body 11 are formed in and between the particle raw materials. For example, one of the formation methods is: the smoking raw material particles are puffed to form a tobacco fiber skeleton with a spindle or rhombus structure, and then a solvent such as an adhesive is added and initially dried. After being formed into a columnar shape, it is dried again to evaporate and dry the moisture inside and outside the skeleton to form micron and nanometer-level micropores.

[0044] For example, as shown in Figure 4, the micropores have a porosity of 20%-80% and a pore size of 50nm-20μm. The micropores are interconnected and connected to the gas collection holes 12, collecting the aerosol within the micropores into the gas collection holes 12. After the smokable substrate 1 is heated, the aerosol generated by the heating can enter the adjacent gas collection holes 12 through the micropores and be collected. Aerosols generated at different locations flow into the support section 2 and mix, improving the uniformity of the aerosol. They then flow through the gas collection holes 12 to the support section 2, which serves as a centralized storage and cooling mechanism for the aerosol. When a user inhales, they first inhale the aerosol in the support section 2. After the aerosol in the support section 2 is removed, the newly generated aerosol flows back into the support section 2, effectively preventing the aerosol from flowing directly into the user's mouth, avoiding burns and improving the mouthfeel of the aerosol.

[0045] Specifically, the smoking matrix 1 is mixed with tobacco fibers or other plant fibers, and then compressed and demolded to form an integrally formed smoking matrix 1.

[0046] In the first embodiment, as shown in FIG5 , the gas collecting hole 12 passes through both ends of the solid matrix body 11 and may have at least two cross-sectional shapes or cross-sectional sizes in the axial direction of the gas collecting hole 12. As shown in the figure, the “cross-sectional shape” here may refer to different specific shapes and appearances. For example, the cross-section of the gas collecting hole 12 at different locations may be circular and square at another location. In other embodiments, the cross-sectional shapes of the holes at different axial locations of the same gas collecting hole 12 may be circular, polygonal, elliptical, multi-pointed star, irregular, etc., and the combination forms the gas collecting hole 12. For another example, the gas collecting hole 12 may be square at one end and elliptical at the other end, or polygonal at one end and multi-pointed star at the other end. The "cross-sectional size" here may refer to different sizes under the same shape, or different sizes under different shapes. For example, when the aerosol flows into the stepped hole 12, it is affected by the size change of the hole 12, and the flow rate of the aerosol may also change, thereby changing the flow rate of the aerosol in the hole 12, allowing the aerosol to mix and making the aerosol more uniform.

[0047] In the second embodiment, as shown in FIG6 , part of the gas collecting holes 12 may pass through both ends of the solid matrix body 11 , and the cross-sectional shape of the gas collecting holes 12 gradually decreases from the downstream end A to the upstream end B, forming a tapered gas hole with a larger downstream end and a smaller upstream end.

[0048] In the third embodiment, as shown in FIG7 , part of the gas collecting holes 12 may pass through both ends of the solid matrix body 11 , and the cross-sectional shape of the gas collecting holes 12 gradually increases from the downstream end A to the upstream end B, forming a tapered gas hole with a small downstream end and a large upstream end.

[0049] In the fourth embodiment, as shown in FIG8 , some of the gas collecting holes 12 pass through both ends of the solid matrix body 11 , and the cross-sectional shape of some of the gas collecting holes 12 gradually decreases from the downstream end A to the upstream end B, while the cross-sectional shape of some of the gas collecting holes 12 gradually increases from the downstream end A to the upstream end B.

[0050] Exemplarily, the gas collection holes 12 of the smokable substrate 1 are identical, i.e., they have the same cross-sectional shape, size, and other specifications. In other embodiments, the gas collection holes 12 include at least two types, and the cross-sectional dimensions of the different types of gas collection holes 12 differ. It is understood that the cross-sectional dimensions of the different types of gas collection holes 12 may also differ, or the cross-sectional dimensions and shapes of the different types of gas collection holes 12 may differ, so that the smokable substrate 1 may have gas collection holes 12 of various specifications.

[0051] The solid matrix body 11 can be cylindrical or flat-mouthed, such as ellipsoidal or square, to facilitate the manufacture of heat-not-burn products 10 of corresponding shapes for users to hold and inhale. During use of the heat-not-burn product 10, the aerosol, after mixing and cooling, maintains a suitable temperature, a more uniform flavor, and reduces disturbances in the flow of the aerosol after generation.

[0052] 9 and 10 , in another preferred embodiment of the present application, a manufacturing process of the aforementioned heat-not-burn product 10 is disclosed, comprising the following steps:

[0053] S1. As shown in FIG9 , a smokable substrate 1 is placed at one axial end of a support segment 2 , and a first rolled substrate is wrapped around the outer circumference of the smokable substrate 1 and the support segment 2 to form a pre-assembled body;

[0054] S2. As shown in Figure 2, the filter segment 3 is set at one end of the first assembly with the support segment 2, and the second rolled substrate is wrapped around the outer peripheral surface of the pre-assembly and the filter segment 3. The second rolled substrate is rolled to form a second coating layer 5.

[0055] As shown in Figure 3, in the heat-not-burn product 10 having a sealing member 6, in step S1, when wrapping the first rolled substrate, the sealing member 6 is first placed on the end of the smoking substrate 1 facing away from the supporting section 2, and then the first rolled substrate is simultaneously wrapped around the sealing member 6, the smoking substrate 1 and the outer peripheral surface of the supporting section 2, and the first rolled substrate is rolled to form a first wrapping layer 4.

[0056] During wrapping, the first and second rolled substrates can be staggered with the cooling holes 21 on the support section 2 to avoid blocking the cooling holes 21. In other embodiments, avoidance openings corresponding to the cooling holes 21 can also be provided on the first and second rolled substrates. After wrapping, the cooling holes 21 are connected to the avoidance openings to allow gas to flow into the support section 2.

[0057] The heat-not-burn product adopts a solid matrix body 11. The solid matrix body 11 formed after molding and drying is conducive to rapid rolling using equipment, and the production process is simple and fast, reducing production costs.

[0058] It can be understood that the above technical features can be used in any combination without limitation.

[0059] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention's description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A heat-not-burn product, characterized in that: It comprises a smoke-generating substrate (1), a supporting section (2), a filtering section (3), a first coating layer (4), and a second coating layer (5); The support section (2) is provided with an air flow channel (200) connecting the smoking substrate (1) and the support section (2); the smoking substrate (1) and the filter section (3) are respectively arranged at two ends of the support section (2); the first coating layer (4) coats the smoking substrate (1) and the support section (2) together; and the second coating layer (5) coats the support section (2) and the filter section (3) together; The smoking substrate (1) comprises a columnar solid substrate body (11), and micropores are dispersed on the solid substrate body (11).

2. The heat-not-burn product according to claim 1, characterized in that: The section where the support section (2) is located is provided with a cooling hole (21) penetrating to the outside.

3. The heat-not-burn product according to claim 2, characterized in that: The cooling hole (21) passes through the first coating layer (4) and / or the second coating layer (5), and is connected to the air flow channel of the supporting section (2).

4. The heat-not-burn product according to claim 2, characterized in that: The cooling hole (21) is arranged on the supporting section (2), the first coating layer (4) and the second coating layer (5) are arranged at intervals in the axial direction of the heat-not-burn product, and the cooling hole (21) is located in the interval between the first coating layer (4) and the second coating layer (5).

5. The heat-not-burn product according to claim 2, characterized in that: The cooling holes (21) are distributed along the circumference.

6. The heat-not-burn product according to claim 2, characterized in that: The distance between the cooling hole (21) and the filter section (3) is smaller than the distance between the cooling hole (21) and the smoking substrate (1).

7. The heat-not-burn product according to claim 1, characterized in that: The second coating layer (5) at least partially coats the outer surface of the first coating layer (4).

8. The heat-not-burn product according to claim 1, characterized in that: The solid matrix body (11) comprises a downstream end (A) and an upstream end (B) located at two axial ends thereof, and the downstream end is opposite to the support section (2). The solid matrix body (11) is provided with at least one gas collecting hole (12) extending along its axial direction, and the gas collecting hole (12) at least passes through the downstream end (A), and the micropores are connected to each other and to the gas collecting hole (12) so as to collect the aerosol in the micropores to the gas collecting hole (12).

9. The heat-not-burn product according to any one of claims 1 to 7, characterized in that: The heat-not-burn product (10) further comprises a blocking piece (6) located at one end of the smoking substrate (1) away from the supporting section (2), and the first coating layer (4) is wrapped around the outer circumference of the smoking substrate (1), the supporting section (2) and the blocking piece (6).

10. A process for producing the heat-not-burn product according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1, placing the smoking substrate (1) at one end of the supporting section (2) in the axial direction, and wrapping the first rolled substrate around the outer circumference of the smoking substrate (1) and the supporting section (2) to form a pre-assembled body; S2, arranging the filter segment (3) at one end of the pre-assembly having the support segment (2) thereon, and wrapping the second rolled substrate around the outer circumference of the pre-assembly and the filter segment (3).

11. The manufacturing process of the heat-not-burn product according to claim 10, characterized in that: In the step S1, when wrapping the first rolled substrate, a sealing member (6) is first arranged at the end of the smoking substrate (1) facing away from the supporting section (2), and then the first rolled substrate is simultaneously wrapped around the outer peripheral surface of the sealing member (6), the smoking substrate (1) and the supporting section (2).

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