WO2025091672A1 - Heat-not-burn product and manufacturing process therefor - Google Patents

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 product and its manufacturing process Technical Field

The invention relates to the field of heat-not-burn, and more particularly to a heat-not-burn product and a manufacturing process thereof.

Background Art

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, and the equipment cost and production cost are relatively high.

Summary of the invention

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.

The technical solution adopted by the present invention to solve the technical problem is: construct 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;

The support section is provided with an airflow channel connecting the smoking substrate and the support section, the smoking substrate and the filter section are respectively arranged at two 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;

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

In some embodiments, a cooling hole penetrating to the outside is provided on the section where the supporting section is located.

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 supporting section.

In some embodiments, the cooling hole is arranged on the supporting segment, the first coating layer and the second coating 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 coating layer and the second coating layer.

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

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.

In some embodiments, the second coating layer at least partially coats the outer surface of the first coating layer.

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

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 collecting hole extending along its axial direction, and the gas collecting hole at least passes through the downstream end. The micropores are connected to each other and the gas collecting holes are connected to collect the aerosol in the micropores to the gas collecting holes.

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

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

S1, placing the smoking substrate at one end of the supporting section in the axial direction, and wrapping the first rolled substrate around the smoking substrate and the outer peripheral surface of the supporting section to form a pre-assembled body;

S2, disposing the filter segment at one end of the assembly provided with the support segment, and wrapping the second rolled substrate on the outer peripheral surface of the pre-assembly and the filter segment.

In some embodiments, in step S1, when wrapping the first rolled substrate, a sealing piece is first disposed 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.

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 adopts 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

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

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

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

FIG3 is a cross-sectional schematic diagram of a heat-not-burn product with a blocking member in another embodiment;

Fig. 4 is an electron microscope image of the smokable material of the smokable matrix;

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

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

7 is a schematic diagram of the third embodiment of the smokable substrate when the downstream end of the gas collecting hole is smaller than the upstream end;

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

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

FIG. 10 is a flow chart of the manufacturing process of heat-not-burn products.

DETAILED DESCRIPTION

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.

As shown in Figs. 1 and 2, a heat-not-burn product 10 in a preferred embodiment of the present invention comprises a smoking substrate 1, a support section 2, a filter section 3, a first coating layer 4, and a second coating layer 5; an airflow channel 200 connecting the smoking substrate 1 and the support section 2 is provided on the support section 2, the smoking substrate 1 and the filter section 3 are respectively arranged at both ends of the support section 2, the first coating layer 4 covers and connects the smoking substrate 1 and the support section 2, and the second coating layer 5 covers and connects the support section 2 and the filter section 3. The smoking substrate 1, the support section 2, and the filter section 3 are connected through two coating layers to form the heat-not-burn product 10.

The smoking substrate 1 includes a columnar solid substrate body 11, on which micropores are scattered. The solid substrate body 11 includes a downstream end A and an upstream end B located at two axial ends thereof, and the downstream end A is opposite to the support section 2, wherein the downstream end A and the upstream end B are named with reference to the aerosol flow direction. During the inhalation process, the aerosol generated by the smoking substrate 1 is transported from upstream to downstream, the downstream end A is the near-lip end, and the upstream end B is the far-lip end. Due to the use of the solid substrate body 11, only a rolling device is needed for rolling to form a heat-not-burn product, which can reduce costs and has low process difficulty.

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 penetrates 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 .

The airflow channel 200 is located in the middle of the support section 2, or can be located at the periphery of the support section 2, or the airflow channel 200 is set at the periphery and the middle of the support section at the same time, so that the aerosol can flow to the filter section 3. The section where the support section 2 is located is provided with a cooling hole 21 that penetrates to the outside. When the user smokes, the outside air can enter the support section 2 through the cooling hole 21, mix with the aerosol in the support section 2, and reduce the temperature of the aerosol. The size of the cooling hole 21 can be set according to demand, and the amount of air entering can be adjusted to meet the cooling demand of reducing to a suitable temperature, so as to meet the user's smoking habits and avoid the aerosol temperature being too high and scalding the mouth.

Preferably, cooling holes 21 are distributed around the side wall of the support section 2, so that external air can 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.

In order to allow the support section 2 to also play the role of pre-storing aerosols, the generated aerosols are first stored in the support section 2. When the aerosol is smoked next time, the stored aerosols are first sucked in, and the generated new aerosols flow into the support section 2 again with the airflow for storage, which can also play a cooling role. At the same time, in order to prevent the pre-stored aerosols from overflowing during the stay stage, the distance from the cooling hole 21 to the filter section 3 can be made smaller than the distance from the cooling hole 21 to the smoking substrate 1, so that the aerosols stored between the cooling hole 21 and the smoking substrate 1 will not overflow, and the air can also be mixed with the pre-stored aerosols when flowing to the filter section 3 and then flow to the filter section 3.

In some embodiments, the second coating layer 5 at least partially coats the outer surface of the first coating layer 4, and may coat the end of the first coating layer 4, or may coat the entire first coating layer 4. Further, when the cooling hole 21 is not coated by the second coating layer 5, the cooling hole 21 penetrates the first coating layer 4 and communicates with the air flow channel 200 of the support section 2; when the cooling hole is not coated by the first coating layer 4, the cooling hole penetrates the second coating layer 5 and communicates with the air flow channel 200 of the support section 2; if the cooling hole 21 is coated by both the first coating layer 4 and the second coating layer 5, the cooling hole 21 penetrates the first coating layer 4 and the second coating layer 5 and communicates with the air flow channel 200 of the support section 2.

It can be understood that the cooling hole 21 can also be provided only on the support section 2, and the first cladding layer 4 and the second cladding layer 5 can be staggered to expose the cooling hole 21 and allow external gas to enter the support section 2 from the cooling hole 21. That is, the first cladding layer 4 and the second cladding layer 5 are spaced apart in the axial direction of the heat-not-burn product, and the cooling hole 21 is located in the space between the first cladding layer 4 and the second cladding layer 5.

In some embodiments, as shown in FIG3 , the heat-not-burn product 10 further includes a plugging member 6 located at one end of the smoking substrate 1 away from the supporting section 2, and the first coating layer 4 is coated on the smoking substrate 1, the supporting section 2, and the outer peripheral surface of the plugging member 6, which can prevent the smoking material of the smoking substrate 1 from falling out. The plugging member 6 can be formed of cellulose acetate, has certain pores, is breathable, and allows the gas to pass through the plugging member 6 and enter the smoking substrate 1. It can be understood that the plugging member 6 can also be an airtight material.

Typically, the cross-sectional shape of the air collecting hole 12 is at least one of an elliptical, circular, polygonal and irregular shape. The number of the air collecting holes 12 can be one or more. When there is only one air collecting hole 12, the air collecting hole 12 can be a through hole or a blind hole. When there are multiple air collecting holes 12, the air collecting holes 12 can all be through holes, or all be blind holes, or some of the air collecting holes 12 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 collecting hole 12 is opposite to the filter section 3, so that the aerosol can flow from the air collecting hole 12 to the support section 2 and the filter section 3.

Different from 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 column, it is dried again to evaporate and dry the moisture inside and outside the skeleton to form micron and nanometer-level micropores.

Exemplarily, as shown in FIG4 , the porosity of the micropores is 20%-80%, and the pore size is 50nm-20μm. The micropores are connected to each other and to the gas collecting holes 12 to collect the aerosol in the micropores to the gas collecting holes 12. After the smoking substrate 1 is heated, the aerosol generated by the heating can enter the adjacent gas collecting holes 12 through the micropores and gather. The aerosols generated at different positions flow into the support section 2 and mix, so that the uniformity of the aerosol is better, and then flow from the gas collecting holes 12 to the support section 2. The support section 2 can play the role of centralized storage and cooling of the aerosol. When the user smokes, he will first inhale the aerosol in the support section 2. After the aerosol in the support section 2 is sucked away, the newly generated aerosol will flow back into the support section 2, which can effectively prevent the aerosol from flowing directly into the user's mouth and avoid burning the mouth. At the same time, it also improves the taste of the aerosol.

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

In the first embodiment, as shown in FIG. 5 , 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 positions may be circular, and another position may be square. In other embodiments, the cross-sectional shapes of the holes at different axial positions of the same gas collecting hole 12 may be circular, polygonal, elliptical, multi-pointed star, irregular shape, etc., respectively, to form the gas collecting hole 12 in combination. For another example, one end of the gas collecting hole 12 is square and the other end is elliptical, or one end is polygonal and the other end is multi-pointed star. 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, the flow rate of the aerosol may also change due to the change in the size of the air collecting hole 12, thereby changing the flow rate of the aerosol in the air collecting hole 12, allowing the aerosol to mix and making the aerosol more uniform.

In the second embodiment, as shown in FIG. 6 , 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 conical gas hole with a large downstream end and a small upstream end.

In the third embodiment, as shown in FIG. 7 , part of the gas collecting holes 12 may also 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 pore with a small downstream end and a large upstream end.

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

Exemplarily, the gas collecting holes 12 of the smoking substrate 1 are the same, that is, the cross-sectional shape, size and other specifications of the holes are the same. In other embodiments, the gas collecting holes 12 include at least two types, and the cross-sectional shapes of different types of gas collecting holes 12 are different. It can be understood that the cross-sectional shapes of different types of gas collecting holes 12 are different, or the cross-sectional shapes and cross-sectional shapes of different types of gas collecting holes 12 are different, and the smoking substrate 1 is formed with gas collecting holes 12 of various specifications.

The solid matrix body 11 can be cylindrical or flat-mouthed, such as ellipsoidal or square, so as to be conveniently made into a heat-not-burn product 10 of corresponding shape for the user to hold in the mouth and breathe in. During the use of the heat-not-burn product 10, the temperature of the aerosol after mixing and cooling is suitable, the taste is more uniform, and the interference in the flow process after the aerosol is generated is reduced.

As shown in FIGS. 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:

S1, as shown in FIG9 , the smoking substrate 1 is disposed at one end of the supporting section 2 in the axial direction, and the first rolled substrate is coated on the outer peripheral surface of the smoking substrate 1 and the supporting section 2 to form a pre-assembled body;

S2. As shown in Figure 2, the filter segment 3 is arranged at one end of the first assembly having the support segment 2, and the second rolled substrate is coated on the outer peripheral surface of the pre-assembly and the filter segment 3, and the second rolled substrate is rolled to form a second coating layer 5.

Combined with Figure 3, in the heat-not-burn product 10 with a sealing member 6, in step S1, when coating the first rolled substrate, the sealing member 6 is first arranged at one end of the smoking substrate 1 that is away from the supporting section 2, and then the first rolled substrate is simultaneously coated on the outer peripheral surface of the sealing member 6, the smoking substrate 1 and the supporting section 2, and the first rolled substrate is rolled to form a first coating layer 4.

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

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 the production cost.

It can be understood that the above-mentioned technical features can be used in any combination without limitation.

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 specification 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 (11)

A heat-not-burn product, characterized in that it comprises a smoke-generating 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 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). The heat-not-burn product according to claim 1 is characterized in that a cooling hole (21) penetrating to the outside is provided on the section where the supporting section (2) is located. The heat-not-burn product according to claim 2, characterized in that the temperature-reducing 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). 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 spaced apart 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). The heat-not-burn product according to claim 2, characterized in that the cooling holes (21) are distributed along the circumference. The heat-not-burn product according to claim 2, characterized in that the distance from the cooling hole (21) to the filter section (3) is smaller than the distance from the cooling hole (21) to the smoke-generating substrate (1). 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). The heat-not-burn product according to claim 1 is 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), and 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). The heat-not-burn product according to any one of claims 1 to 7 is 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). A process for producing a heat-not-burn product according to any one of claims 1 to 9, characterized in that it comprises the following steps: 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). The manufacturing process of the heat-not-burn product according to claim 10 is characterized in that, in the step S1, when coating the first rolled substrate, a sealing member (6) is first arranged on the end of the smoking substrate (1) facing away from the supporting section (2), and then the first rolled substrate is simultaneously coated on the outer peripheral surface of the sealing member (6), the smoking substrate (1) and the supporting section (2).