阅读说明：本技术 一种用于电磁感应的多层卷烟纸 (Multi-layer cigarette paper for electromagnetic induction ) 是由 黄婷 刘华臣 吴聪 唐良颖 谭健 于 2021-09-30 设计创作，主要内容包括：本发明提供一种用于电磁感应的多层卷烟纸。该用于电磁感应的多层卷烟纸包括依次叠置的外包层、隔热层和加热层,所述加热层布置在所述隔热层上,所述加热层用以在交变磁场的感应下、对被包裹于其中的气溶胶生成基质进行加热而生成气溶胶。本发明通过在卷烟纸中依次设置隔热层和加热层,使在隔热层的阻隔下,加热层产生的热量被约束在隔热层内部,并由气溶胶生成基质外周逐步向其中心热传递,从而使气溶胶生成基质被充分、均匀地加热。(The invention provides a multi-layer cigarette paper for electromagnetic induction. This a multilayer cigarette paper for electromagnetic induction includes outer cladding, insulating layer and the zone of heating of superpose in proper order, the zone of heating is arranged on the insulating layer, the zone of heating is used for under alternating magnetic field's response, to being wrapped up in aerosol generation substrate wherein heat and generate aerosol. According to the invention, the heat insulating layer and the heating layer are sequentially arranged in the cigarette paper, so that under the obstruction of the heat insulating layer, the heat generated by the heating layer is confined in the heat insulating layer and is gradually transferred to the center of the aerosol generating substrate from the periphery of the aerosol generating substrate, and thus the aerosol generating substrate is fully and uniformly heated.)

1. The multi-layer cigarette paper for electromagnetic induction is characterized by comprising an outer wrapping layer (4), a heat insulation layer (3) and a heating layer (2) which are sequentially stacked, wherein the heating layer (2) is arranged on the heat insulation layer (3), and the heating layer (2) is used for heating an aerosol generating substrate (1) wrapped in the heating layer under the induction of an alternating magnetic field to generate aerosol.

2. A multi-layer cigarette paper for electromagnetic induction according to claim 1, further comprising a heat-conductive fixing layer (5), the heating layer (2) being arranged between the insulation layer (3) and the fixing layer (5), the fixing layer (5) being in direct contact with the aerosol-generating substrate (1), the heating layer (2) heating the aerosol-generating substrate (1) through the fixing layer (5) by warming under electromagnetic induction.

3. A multi-layered cigarette paper for electromagnetic induction according to claim 2 characterized in that the heating layer (2) consists of a susceptor capable of generating an induction current under the action of an alternating magnetic field.

4. A multi-layered cigarette paper for electromagnetic induction according to claim 3, characterised in that the heating layer (2) is arranged on the insulating layer (3) or the fixing layer (5) by means of spraying, adhesion, lamination, sintering, adhesion.

5. A multi-layered cigarette paper for electromagnetic induction according to claim 1, characterised in that a heat-insulating coating is arranged on the heat-insulating layer (3).

6. A multi-layered cigarette paper for electromagnetic induction according to claim 1, characterized by further comprising an infrared material arranged inside the insulation layer (3) to enhance thermal radiation.

7. A multi-layered cigarette paper for electromagnetic induction according to claim 1, characterised in that the heating layer (2) is provided with limbs (21) extending towards the interior of the aerosol-generating substrate (1).

8. A multi-layered cigarette paper for electromagnetic induction according to claim 1, characterised in that the heating layer (2) is provided with partitions (22) connecting the inner wall of the heating layer (2) dividing the aerosol-generating substrate (1) into a plurality of small cavities (221).

9. An aerosol-generating article characterized by comprising an aerosol-generating substrate (1) capable of generating an aerosol upon heating and a multi-layer cigarette paper for electromagnetic induction according to any of claims 1 to 7 wrapped around the aerosol-generating substrate (1) to form an aerosol-generating article (00).

Technical Field

The invention relates to the field of heating non-combustion tobacco products, in particular to multi-layer cigarette paper for electromagnetic induction.

Background

The induction heating means that alternating current generated by an induction heating power supply passes through an inductor, namely a coil, to generate an alternating magnetic field, a magnetic conductive object is arranged in the inductor to cut alternating magnetic lines, so that alternating current, namely eddy current, is generated inside the object, the eddy current enables atoms inside the object to move randomly at a high speed, and the atoms collide and rub with each other to generate heat energy, thereby achieving the effect of heating the object.

The heating non-combustion cigarette based on induction heating is well known by the public due to the characteristics of high heat efficiency, high temperature rising speed and the like, most of the existing electromagnetic induction type cigarettes are provided with induction coils inside smoking sets, and a susceptor is arranged inside a cigarette aerosol forming substrate or the cigarette aerosol forming substrate is directly coated on the susceptor, so that the susceptor and the induction coils mutually induce to heat tobacco. The method is characterized in that a susceptor is arranged in a cigarette aerosol forming substrate, which cannot be quickly realized in the existing cigarette structure, cigarette equipment needs to be transformed in a large scale, and the production process is complex; at the same time, a sufficiently uniform heating of the aerosol-forming substrate cannot be completely achieved in the case of induction heating.

Publication CN109497622A discloses a low temperature cigarette for induction heating, comprising an aerosol-forming substrate for generating aerosol particles for continuous smoking upon heating; a wrapping layer for wrapping the aerosol-forming substrate, the wrapping layer comprising an inductor and cigarette paper, the inductor being capable of generating heat energy in an alternating magnetic field for heating the aerosol-forming substrate; a filter section for abutment with an upstream end of the aerosol-forming substrate. According to the low-temperature cigarette for induction heating, the wrapping layer consisting of the inductor and the cigarette paper heats the aerosol generating substrate arranged in the wrapping layer in the alternating magnetic field to generate aerosol particles, but the susceptor is positioned outside the aerosol generating substrate, and the heat generated by the susceptor is difficult to penetrate into the center of the aerosol generating substrate during heating, so that the problem of uneven heating is caused.

Disclosure of Invention

In view of the above-described drawbacks of the prior art, an object of the present invention is to provide a multi-layer wrapper for electromagnetic induction, in which a heat insulating layer and a heating layer are sequentially provided in the wrapper, so that heat generated from the heating layer is confined in the heat insulating layer under the barrier of the heat insulating layer, and is gradually transferred from the outer periphery of an aerosol-generating substrate to the center thereof, thereby sufficiently and uniformly heating the aerosol-generating substrate.

The invention provides a multi-layer cigarette paper for electromagnetic induction, which comprises an outer wrapping layer, a heat insulation layer and a heating layer which are sequentially stacked, wherein the heating layer is arranged on the heat insulation layer and used for heating an aerosol generating substrate wrapped in the heating layer under the induction of an alternating magnetic field to generate aerosol.

The invention has the following excellent technical scheme: still include the fixed bed that can conduct heat, the zone of heating arrange the insulating layer with between the fixed bed, fixed bed and aerosol generation substrate direct contact, the zone of heating is heated up under electromagnetic induction and is passed through the fixed bed heats aerosol generation substrate.

The invention has the following excellent technical scheme: the heating layer is composed of a susceptor which can generate induction current under the action of an alternating magnetic field.

The invention has the following excellent technical scheme: the heating layer is arranged on the heat insulation layer or the fixing layer in a spraying, adhering, laminating, sintering and bonding mode.

The invention has the following excellent technical scheme: and the heat insulation layer is provided with heat insulation coating.

The invention has the following excellent technical scheme: further comprising an infrared material arranged inside the thermally insulating layer for enhancing the thermal radiation.

The invention has the following excellent technical scheme: a limb portion extending into the aerosol-generating substrate is provided on the heating layer.

The invention has the following excellent technical scheme: the heating layer is provided with a partition which is connected with the inner wall of the heating layer and divides the aerosol generating substrate into a plurality of small cavities.

The invention has the following excellent technical scheme: there is also provided an aerosol-generating article comprising an aerosol-generating substrate capable of generating an aerosol upon heating and a multi-layer cigarette paper for electromagnetic induction as described above wrapped around the aerosol-generating substrate to form an aerosol-generating article.

The multi-layer cigarette paper for electromagnetic induction has the following beneficial effects:

1. according to the scheme provided by the invention, the cigarette paper is provided with the heat insulation layer and the heating layer in sequence, the heating layer heats the aerosol generating substrate arranged in the heating layer, and the heat insulation layer is arranged outside the heating layer to prevent heat generated by induction of the heating layer from diffusing and restrain the heat in a space defined by the heat insulation layer, so that the heat generated by the heating layer is gradually transferred to the center of the aerosol generating substrate from the periphery of the aerosol generating substrate, and the aerosol generating substrate is fully and uniformly heated.

2. According to the scheme provided by the invention, the branch parts extending towards the inside of the aerosol generating substrate are designed on the heating layer, so that when the aerosol generating product is in an alternating magnetic field, the heating layer wrapped on the periphery of the aerosol generating substrate and the branch parts extending into the aerosol generating substrate can heat the inside and the outside of the aerosol generating substrate at the same time, and the aerosol generating substrate is heated uniformly.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. For a person skilled in the art, other figures can be derived from these figures without inventive effort.

Figure 1 is a cross-sectional view of a multi-wrap for electromagnetic induction in accordance with an embodiment of the present invention.

Fig. 2 is a cross-sectional view from another perspective of an embodiment of the present invention.

Figure 3 is a cross-sectional view of another embodiment of the multi-wrap for electromagnetic induction according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view from another perspective of another embodiment of the present invention.

Fig. 5 is a schematic view of another embodiment of a heating layer according to an embodiment of the present invention.

Fig. 6 is a schematic view of another embodiment of a heating layer according to an embodiment of the present invention.

Figure 7 is a schematic view of an aerosol-generating article according to an embodiment of the invention.

In the figure: 1. an aerosol-generating substrate; 2. a heating layer; 21. a branch portion; 22. separating; 221. a small cavity; 3. a thermal insulation layer; 4. an outer cladding; 5. a fixed layer; 00. an aerosol-generating article; 10. a heating section; 20. a cooling section; 30. a filter section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

Please refer to fig. 1 and fig. 2. A multi-layer cigarette paper for electromagnetic induction comprises an outer wrapping layer 4, a heat insulation layer 3 and a heating layer 2 which are sequentially overlapped, wherein the heating layer 2 is arranged on the heat insulation layer 3, and the heating layer 2 is used for heating an aerosol generating substrate 1 wrapped in the heating layer under the induction of an alternating magnetic field to generate aerosol.

The material of the outer cladding 4 is cigarette paper suitable for heating non-burning cigarettes, or a metal or nonmetal composite material with good thermal property, so that the outer cladding 4 is prevented from being deformed and damaged by high temperature during heating; the heat-insulating layer 3 is provided with a heat-insulating coating, the heat-insulating layer 3 is arranged on the outer cladding 4 by means of spraying, or adhesion, or lamination, or sintering, or adhesion, etc., so that heat generated by the heating layer 2 is gradually transferred from the periphery of the aerosol-generating substrate 1 to the center thereof in the space defined by the heat-insulating layer 3, thereby the aerosol-generating substrate 1 is sufficiently and uniformly heated; the material of the heating layer 2 is a susceptor made of any material that can be heated by induction, which is arranged on the insulating layer 3 by spraying, or adhering, or laminating, or sintering, or bonding, etc. to heat the aerosol-generating substrate 1 placed inside.

Preferably, the heating layer 2 is made of one or more than one susceptor material capable of generating alternating current under the action of an alternating magnetic field, such as ferrite, ferromagnetic steel or stainless steel;

preferably, heating layer 2 further includes an infrared material capable of transferring heat by infrared radiation, for example, at least one of iron-based, nickel-cobalt-based, carbide-based, and the like. The heating layer 2 is arranged on the heat insulation layer 3 in a strip shape, a sheet shape or a granular shape.

Preferably, an infrared layer consisting of an infrared material is arranged at any level inside the thermal barrier layer 3, so that heat generated by the heating layer 2 is concentrated inside by the thermal barrier layer 3, and the aerosol-generating substrate 1 is heated more fully by the heat radiation of the infrared layer.

The susceptor on the heating layer 2 inductively heats under the action of the alternating magnetic field, and meanwhile, the infrared material radiates heat energy to transfer the heat energy to the inside in an all-round manner, so that the heat efficiency is improved; and because the insulating layer 3 is arranged outside the heating layer 2, the heat generated by the heating layer 2 is gathered inside by the insulating layer 3, so that the heat is prevented from being dissipated, and the heat can be concentrated in the aerosol generating substrate 1 inside the insulating layer 3 to heat the aerosol generating substrate, thereby improving the heat utilization rate.

Please refer to fig. 3 and 4. The utility model provides a another embodiment for electromagnetic induction's multilayer cigarette paper, still includes and arranges the fixed layer 5 on zone of heating 2, and zone of heating 2 passes through spraying, or adhesion, or lamination, or sintering, or mode such as bonding and arranges between insulating layer 3 and fixed layer 5 to when avoiding the receptor on zone of heating 2 to be the particle form, zone of heating 2 adheres to the insecure condition on insulating layer 3, provides another adhesion surface for zone of heating 2, avoids droing of zone of heating 2. In the present embodiment, the fixing layer 5 is in direct contact with the aerosol-generating substrate 1, and the material of the fixing layer 5 is a metal or nonmetal having good thermal conductivity, such as ceramic, glass, or the like; to heat up under electromagnetic induction from the heating layer 2 and transfer heat to the aerosol-generating substrate 1 through the well-conducting fixing layer 5 to cause it to generate an aerosol.

Please refer to fig. 5. In another embodiment of a multi-layer wrapper for electromagnetic induction, the heating layer 2 is provided with a limb portion 21 extending towards the interior of the aerosol-generating substrate 1, the limb portion 21 being formed of a susceptor of any material capable of being inductively heated, such that when an aerosol-generating article formed from the multi-layer wrapper for electromagnetic induction is heated by an induction coil, the heating layer 2 wrapped around the exterior of the aerosol-generating substrate 1 and the limb portion 21 located within the aerosol-generating substrate 1 are heated simultaneously, such that the exterior and interior of the aerosol-generating substrate 1 are simultaneously inductively heated, and the aerosol-generating substrate 1 is uniformly and comprehensively heated.

Please refer to fig. 6. Another embodiment of a multi-layered cigarette paper for electromagnetic induction, wherein a partition 22 is provided on the heating layer 2 connecting the inner wall of the heating layer 2, dividing the aerosol-generating substrate 1 into a plurality of regions, the partition 22 being composed of a susceptor made of any material capable of being heated by induction; at least two partitions 22 are communicated with each other and connected with the heating layer 2 so as to divide a space surrounded by the heating layer 2 and used for arranging the aerosol generating substrate 1 into a plurality of independent small cavities 221 by the partitions 22, the plurality of independent small cavities 221 are wrapped by the partitions 22 and the heating layer 2, and when the small cavities 221 and the aerosol generating substrate 1 in the small cavities are positioned in the alternating magnetic field, the heating layer 2 and the partitions 22 can heat the aerosol generating substrate 1 at the same time; since the small cavity 221 formed by the partition 22 divides the aerosol-generating substrate 1 into a plurality of small volumes, the heat generated by the heating layer 2 and the partition 22 wrapped outside the small cavity 221 can be more easily transferred to the inside of the small cavity 221, and the aerosol-generating substrate 1 in the small cavity 221 can be heated more uniformly.

Please refer to fig. 7. An aerosol-generating article 00 for inducing induced heat generation of aerosol particles in an alternating magnetic field; the cigarette comprises a heating part 10, a cooling part 20 and a filter section 30, wherein the heating part 10 consists of an aerosol generating substrate 1 and a plurality of layers of cigarette paper for electromagnetic induction wrapped on the periphery of the aerosol generating substrate 1, the heating part 10 is arranged in an alternating magnetic field, and a sensor on a heating layer 2 is heated inductively to heat the aerosol generating substrate 1 arranged in the heating part and enable the aerosol generating substrate to generate aerosol particles; the cooling part 20 is used for cooling the high-temperature aerosol particles generated by the heating part 10, so that the aerosol particles are cooled to a proper temperature for suction; the filter segment 30 is used for filtering the aerosol particles cooled by the cooling portion 20, and filtering impurities in the aerosol particles to enable the aerosol particles to achieve a proper taste, so as to bring a comfortable smoking experience.

The above-described aspects may be implemented individually or in various combinations, and such variations are within the scope of the present invention.

It should be noted that, in the description of the present application, it should be noted that the terms "upper end", "lower end" and "bottom end" indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which the product of the application is usually placed in when the product of the application is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present application. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In the present specification, the respective preferred embodiments are only described with emphasis on differences from other embodiments, and the respective preferred embodiments may be arbitrarily combined as long as they do not conflict with each other, and the embodiments formed by combining are also within the scope disclosed in the present specification, and in view of the brevity of the present specification, the embodiments formed by combining are not separately described herein.

Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.