Capsule for heating cigarette and preparation method thereof

Abstract

The invention discloses a capsule for heating cigarettes. The capsule comprises an inner core (1) and a shell layer (2) wrapping the inner core (1). The inner core (1) adopts a core material containing flavor substances; a wall material adopted by the shell layer (2) is an environment-sensitive material; and the sensing material (3) is distributed in the shell layer (2) or the inner core (1). The invention also provides a preparation method of the capsule. According to the capsule for heating the cigarette, the sensing material is added into the inner core or the shell layer, the sensing material is used for heating under the action of electromagnetic induction, and release of flavor substances is accelerated.

Description

Technical Field

[0001] The present application relates to the technical field of heated tobacco, and in particular to a capsule for heating cigarettes and a preparation method thereof. Background Art

[0002] Heated cigarettes are usually used in conjunction with corresponding heated smoking devices, which heat the smoking devices to produce aerosols containing nicotine and tobacco flavors for consumers to inhale. Compared with the temperature of traditional cigarettes, which is as high as 800°C, the heating temperature of heated cigarettes is usually 300-500°C. The lower heating temperature significantly reduces the content of harmful components in the aerosol, reduces the impact on consumer health, and reduces pollution to the environment.

[0003] In order to improve the aroma characteristics of cigarettes, cover up unpleasant tastes and give a unique flavor style, flavor substances such as flavors are usually added to tobacco products. However, flavor substances are easily affected by external factors due to their volatility, making it difficult to ensure the stability and durability of the aroma. In the prior art, various methods such as packaged slow release and encapsulation are used to improve the stability of flavor storage and release, but this also causes problems such as slow release and low transmission efficiency, making it difficult for consumers to get a flavor enhancement experience in the first few puffs. Summary of the invention

[0004] In order to solve the above technical problems, the first purpose of the present invention is to provide a capsule for heating cigarettes; the second purpose of the present invention is to provide a method for preparing the above capsule; the capsule for heating cigarettes provided in the present application accelerates the release of flavor substances by adding induction material in the inner core or shell layer and utilizing the induction material to generate heat under the action of electromagnetic induction.

[0005] The technical solution provided by the present invention is as follows: A capsule for heating cigarettes, comprising an inner core and a shell layer wrapping the inner core; The inner core adopts a core material containing flavor substances; The wall material used for the shell layer is a temperature-sensitive material; The invention also comprises a sensing material, wherein the sensing material is distributed in the shell layer or in the core layer.

[0006] Preferably, the temperature-sensitive material deforms at a temperature between 80°C and 300°C.

[0007] Preferably, the temperature-sensitive material is one or more of paraffin, fatty acid, carboxymethyl cellulose, rosin, polyethylene glycol, agar, gelatin, shellac, xanthan gum, sodium alginate, polyvinyl alcohol, poly (N-isopropylacrylamide), ethylene-vinyl acetate copolymer, silicone polymer, polypropylene, polylactic acid, and polycaprolactone.

[0008] Preferably, the flavor substance in the core material is any one of blueberry flavor, pineapple flavor, cantaloupe flavor, peach flavor, taro flavor, coffee flavor, grape flavor, mint flavor, sweet orange flavor, lime flavor, and tobacco extract.

[0009] Preferably, the sensing material is any one or more of iron or iron oxide, cobalt or cobalt oxide, nickel or nickel oxide, stainless steel, zirconium oxide, silicon steel sheet, Permalloy, carbon rod, graphite, and silicon carbide.

[0010] Preferably, the shape of the sensing material is any one or more of sphere, ellipsoid, polyhedron, strip, ring, flake, powder.

[0011] Preferably, the size of the sensing material is 10-500 microns.

[0012] Preferably, the volume of the inductive material accounts for 2-10% of the core material, or the volume of the inductive material accounts for 2-10% of the wall material.

[0013] The method for preparing the capsule described in any one of the above items comprises the following steps: S1. Mix the sensing material and the wall material, or mix the sensing material and the core material; S2, forming an inner core by cooling, and then wrapping the wall material outside the inner core to form a shell layer; or, using a mold to make the wall material into a shell layer, and then injecting the core material into the shell layer to form the inner core.

[0014] The present application first provides a capsule for heating cigarettes, comprising an inner core and a shell layer wrapping the inner core; the inner core is made of a core material containing flavor substances; the shell layer is made of a temperature-sensitive wall material; and the capsule further comprises a sensing material, which is distributed in the shell layer or in the inner core. The capsule provided by the present application accelerates the release of flavor substances by adding a sensing material in the inner core or the shell layer, and utilizing the sensing material to generate heat under electromagnetic induction.

[0015] The present application also provides a method for preparing the above-mentioned capsules, which is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 Schematic diagram of the structure of a capsule for heating cigarettes in an embodiment of the present invention (the induction material is located in the shell layer); Figure 2Another structural schematic diagram of a capsule for heating cigarettes in an embodiment of the present invention (the induction material is located in the inner core); Reference numerals: 1 - core; 2 - shell; 3 - sensing material. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0020] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0021] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0022] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0023] As shown in the figure, an embodiment of the present invention provides a capsule for heating cigarettes, comprising an inner core 1 and a shell 2 wrapping the inner core 1; The core 1 is made of a core material containing flavor substances; The wall material of the shell layer 2 is a temperature-sensitive material; The invention also comprises a sensing material 3 , which is distributed in the shell layer 2 or in the core 1 .

[0024] The present application first provides a capsule for heating cigarettes, comprising an inner core 1 and a shell 2 wrapping the inner core 1; the inner core 1 is made of a core material containing flavor substances; the shell 2 is made of a temperature-sensitive material; and further comprises a sensing material 3, which is distributed in the shell 2 or in the inner core 1. The capsule provided by the present application accelerates the release of flavor substances by adding the sensing material 3 in the inner core 1 or the shell 2, and utilizing the sensing material 3 to generate heat under the action of electromagnetic induction.

[0025] When the sensing material 3 is mixed with the core material, the flavor substances are loaded on the surface or in the internal pores of the sensing material 3 by means of physical adsorption, chemical bonding, etc., and are encapsulated and protected by the shell layer 2 to ensure the stability of the flavor substances during storage and transportation; at the same time, the above-mentioned capsule is placed in the filter tip or tobacco material of the cigarette. During the heating process of the cigarette, the electromagnetic induction heating has a higher heating efficiency for the sensing material 3, and the temperature is conducted from the sensing material 3 to the wall material of the shell 2, accelerating its deformation and melting to release the core material containing the flavor substances.

[0026] The mixing of the sensing material 3 and the core material can be achieved by emulsion polymerization coating molding, sol-gel coating molding, or by physical adsorption to allow the flavor substances to be naturally adsorbed on the surface of the sensing material 3.

[0027] When the induction material 3 is mixed with the wall material, the induction material 3 can be evenly distributed in the wall material or concentrated in a certain part of the wall material (for example, concentrated at the bottom of the capsule) according to the different viscosities of the wall material in the molten state, but neither affects the deformation of the wall material when the temperature changes, causing the core material containing the flavor substance to flow out. At the same time, the induction material 3 is distributed in the shell 2, and when heated by electromagnetic induction, it will also accelerate the deformation and melting of the wall material to release the core material containing the flavor substance.

[0028] The induction material 3 and the wall material can be mixed by melting the wall material and then stirring, mixing and dispersing (preferably at a speed of 50-200 rpm). Preferably, the viscosity of the wall material in the molten state is between 10m-4000mPa·s. A high viscosity means less sedimentation of the induction material 3 during the standing process and a more uniform distribution in the housing 2; a low viscosity means that the induction material 3 is more likely to be deposited on the bottom of the housing 2.

[0029] Preferably, the temperature-sensitive material deforms at a temperature between 80°C and 300°C.

[0030] Preferably, the temperature-sensitive material is one or more of paraffin, fatty acid, carboxymethyl cellulose, rosin, polyethylene glycol, agar, gelatin, shellac, xanthan gum, sodium alginate, polyvinyl alcohol, poly (N-isopropylacrylamide), ethylene-vinyl acetate copolymer, silicone polymer, polypropylene, polylactic acid, and polycaprolactone.

[0031] The temperature-sensitive material used for the shell 2 preferably deforms between 80-300°C. When the capsule is placed in a cigarette, combined with the heating characteristics of the heated cigarette, the heat from the smoking device will cause the material of the shell 2 to deform, such as melt, crack, deform, etc., to release the core material contained inside.

[0032] Preferably, the flavor substance in the core material is any one of blueberry flavor, pineapple flavor, cantaloupe flavor, peach flavor, taro flavor, coffee flavor, grape flavor, mint flavor, sweet orange flavor, lime flavor, and tobacco extract.

[0033] The flavor substance in the core material can be any flavor commonly used in the tobacco field, preferably any one of blueberry flavor, pineapple flavor, cantaloupe flavor, peach flavor, taro flavor, coffee flavor, grape flavor, mint flavor, sweet orange flavor, and lime flavor. Preferably, the flavor is in liquid form.

[0034] The flavoring substance can also be a tobacco extract to add more tobacco flavor to the cigarette.

[0035] Preferably, the sensing material 3 is any one or more of iron or iron oxide, cobalt or cobalt oxide, nickel or nickel oxide, stainless steel, zirconium oxide, silicon steel sheet, Permalloy, carbon rod, graphite, and silicon carbide.

[0036] Preferably, the shape of the sensing material 3 is any one or more of spherical, ellipsoidal, polyhedral, strip, ring, sheet, and powder.

[0037] The sensing material 3 is preferably any one or more of iron or iron oxide (such as ferroferric oxide), cobalt or cobalt oxide, nickel or nickel oxide, stainless steel, zirconium oxide, silicon steel sheet, Permalloy, carbon rod, graphite, and silicon carbide. It is preferred to use chemically stable sensing materials, such as zirconium oxide and carbon rod, to avoid or reduce the problem of the sensing material 3 reacting with the flavor substance when mixed with the core material. However, when using metals such as iron, the effect on the quality of the flavor substance is not significant because the amount of the sensing material used is relatively small.

[0038] The shape of the sensing material 3 can be any one or more of sphere, ellipsoid, polyhedron, strip, ring, sheet, powder, and more preferably sphere.

[0039] Preferably, the size of the sensing material 3 is 10-500 microns.

[0040] Preferably, the volume of the induction material 3 accounts for 2-10% of the core material, or the volume of the induction material 3 accounts for 2-10% of the wall material.

[0041] Preferably, the size of the sensing material 3 is 10-500 microns. Preferably, the volume of the sensing material 3 accounts for 2-10% of the core material, or the volume of the sensing material 3 accounts for 2-10% of the wall material. The size and amount of the sensing material 3 are adapted to the size of the capsule.

[0042] The method for preparing the capsule described in any one of the above items comprises the following steps: S1, mixing the sensing material 3 with the wall material, or mixing the sensing material 3 with the core material; S2, forming the inner core 1 by cooling, and then wrapping the wall material outside the inner core 1 to form the shell 2; or, using a mold to make the wall material into the shell 2, and then injecting the core material into the shell 2 to form the inner core 1.

[0043] The present application also provides a method for preparing the above-mentioned capsule. According to needs, the sensing material 3 is mixed with the wall material, or the sensing material 3 is mixed with the core material; then a structure in which the shell layer 2 wraps the core 1 is formed; specifically, the core material can be first solidified by cooling to form the core 1, and then the wall material is wrapped around the core 1 to form the shell layer 2, or the wall material can be made into a hollow shell layer 2 using a mold, and then the core material is injected into the shell layer 2 to form the core 1.

[0044] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A capsule for heating cigarettes, characterized in that: It comprises an inner core (1) and a shell (2) encapsulating the inner core (1); The core (1) is made of a core material containing flavor substances; The wall material of the shell layer (2) is a temperature-sensitive material; It also includes a sensing material (3), wherein the sensing material (3) is distributed in the shell layer (2) or in the core (1).

2. The capsule according to claim 1, characterized in that Temperature-sensitive materials deform between 80-300°C.

3. The capsule according to claim 2, characterized in that The temperature-sensitive material is one or more of paraffin, fatty acid, carboxymethyl cellulose, rosin, polyethylene glycol, agar, gelatin, shellac, xanthan gum, sodium alginate, polyvinyl alcohol, poly (N-isopropylacrylamide), ethylene-vinyl acetate copolymer, silicone polymer, polypropylene, polylactic acid, and polycaprolactone.

4. The capsule according to claim 1, characterized in that The flavor substance in the core material is any one of blueberry flavor, pineapple flavor, cantaloupe flavor, peach flavor, taro flavor, coffee flavor, grape flavor, mint flavor, sweet orange flavor, lime flavor, and tobacco extract.

5. The capsule according to any one of claims 1 to 4, characterized in that The sensing material (3) is any one or more of iron or iron oxide, cobalt or cobalt oxide, nickel or nickel oxide, stainless steel, zirconium oxide, silicon steel sheet, Permalloy, carbon rod, graphite, and silicon carbide.

6. The capsule according to claim 5, characterized in that The shape of the sensing material (3) is any one or more of spherical, ellipsoidal, polyhedral, strip, ring, flake, and powder.

7. The capsule according to claim 5, characterized in that The size of the sensing material (3) is 10-500 microns.

8. The capsule according to claim 1, characterized in that The volume of the sensing material (3) accounts for 2-10% of the core material, or the volume of the sensing material (3) accounts for 2-10% of the wall material.

9. The method for preparing the capsule according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, mixing the sensing material (3) and the wall material, or mixing the sensing material (3) and the core material; S2, forming a core (1) by cooling, and then wrapping the wall material outside the core (1) to form a shell (2); or, using a mold to make the wall material into the shell (2), and then injecting the core material into the shell (2) to form the core (1).

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