Heating cigarette based on ultrathin flexible glass tube

Abstract

The utility model discloses a heating cigarette based on an ultra-thin flexible glass tube, which takes the ultra-thin flexible glass tube as an outer wrapping material and sequentially comprises a cigarette core section, a blocking section, a cooling and aroma-enhancing functional section and a filtering section along the axial direction. The ultra-thin flexible glass tube is adopted as a cigarette wrapping material, compared with an existing heating cigarette made of a paper wrapping material, offensive odor generated by high-temperature thermal cracking and carbonization of the paper material during circumferential heating is avoided, the smoke sensory quality is greatly improved, moisture adsorption of the cigarette is further reduced due to the excellent sealing performance of the glass tube, and the cigarette can be used for heating the cigarette. The storage stability of the cigarette under high-temperature and high-humidity conditions is improved; and the glass tube has a good transparent effect, so that the consumption experience of a user is improved, compared with the existing commercially available visual material, the strength and the temperature resistance effect are better, and the application of the glass tube in cigarette heating is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of novel tobacco products, and particularly relates to a novel heated cigarette form. Background Art

[0002] Heating cigarettes is to heat the core material in a low-temperature environment. The core material does not burn, which reduces the release of harmful substances caused by combustion. At present, the heating cigarette set products are mainly electric heating, which can be divided into two types: inner core type and circumferential type. The combination of inner core electric heating tobacco sets and heated cigarettes generally has the problem of carbonization, carbonization and adhesion of the smoke-releasing materials on the heating element after smoking. Special tools are required to clean the heating components, which affects consumers' experience of the product. Circumferential electric heating tobacco set products better avoid the defects of inner core heating combination products, but single heat conduction can easily cause uneven heating of the core material inside and outside, especially the wrapping material that wraps the core material, which is directly heated by the heating element. At present, the wrapping material is mainly paper materials such as cigarette paper and paper tubes, but paper materials are prone to pyrolysis when continuously heated, and may also produce carbonization at high temperatures. This excessive heating will produce hot and mixed gases and affect the sensory quality. At the same time, paper materials will absorb moisture in the air during storage, causing the cigarette to absorb moisture, making the smoke hot and the smoke release volume low in the initial heating period. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a heated cigarette based on an ultra-thin flexible glass tube to improve the thermal stability of the heated cigarette and the quality stability under high temperature and high humidity conditions.

[0004] In order to achieve the purpose, the utility model adopts the following technical solutions:

[0005] The utility model discloses a heating cigarette based on an ultra-thin flexible glass tube. The heating cigarette uses the ultra-thin flexible glass tube as an outer wrapping material.

[0006] Furthermore, the ultra-thin flexible glass tube is a tubular structure made of ultra-thin flexible glass, specifically, it is made of ultra-thin flexible glass through a multi-layer curling process. The curvature radius of the ultra-thin flexible glass is 2.5-4.5mm, and the thickness is 20-40μm; the radius of the ultra-thin flexible glass tube is 3.0-3.8mm, and the tube wall thickness is 60-150μm. The preparation method of the ultra-thin flexible glass tube is: first, the adhesive is evenly sprayed on the surface of the ultra-thin flexible glass, and then the glass surface coated with the adhesive is curled on a fixture with a radius of 2.9-3.7mm, and each curled layer is heated and bonded, and the number of curled layers is 3-5 layers (if the number of layers is too high, the elasticity of the glass tube is weakened; if the number of layers is too small, the strength of the glass tube is insufficient). In order to improve the performance of the glass tube, after curling, the glass tube can be immersed in a mixed solution of polyimide and polyvinyl butyral ester, and then cured at 80-150° C. for 0.5-1.5 h to form a buffer layer on the surface of the glass tube.

[0007] Furthermore, the heated cigarette is composed of a tobacco core segment, a barrier segment, a temperature reduction and flavor enhancement functional segment, and a filter segment which are sequentially filled in the ultra-thin flexible glass tube, and the front end of the tobacco core segment is blocked by a blocking layer.

[0008] Furthermore, the blocking layer is a microporous glass sheet or a high-transparency molded paper.

[0009] Furthermore, the cigarette core segment is tobacco particles, tobacco columns or tobacco sheets.

[0010] Furthermore, the blocking section is a columnar or gear-shaped fixture having a through vent hole provided in the axial direction.

[0011] Furthermore, the temperature-lowering and aroma-enhancing functional section is provided with phase-changing slow-release aroma beads, aroma-enhancing particles or gel aroma-enhancing filter sticks.

[0012] Furthermore, the filter segment is a tow filter rod.

[0013] Compared with the prior art, the beneficial effects of the utility model are embodied in:

[0014] 1. The utility model adopts a glass tube made of ultra-thin flexible glass as the outer wrapping material of the cigarette. Compared with the physically thinned glass tube, it has better elasticity, improves the machine adaptability and yield rate of the glass tube, and can be further wrapped with a buffer layer to avoid glass fragments generated by cracking during glass processing, thereby improving the processing safety of the product.

[0015] 2. The utility model adopts an ultra-thin flexible glass tube for heating cigarettes. Compared with the existing heated cigarettes wrapped with paper materials, the thermal stability of the wrapping material is higher, which avoids the generation of impurities due to pyrolysis and carbonization of paper materials during the heating process of the circumferential heating smoking device, and greatly improves the sensory quality of the cigarette products.

[0016] 3. The utility model adopts an ultra-thin flexible glass tube for heating cigarettes, which has better sealing performance. Compared with the existing wrapping materials, it can prevent moisture in the air from entering the cigarette core material, reduce the adsorption of moisture by the cigarette, and improve the storage stability of the cigarette under high temperature and high humidity conditions.

[0017] 4. The ultra-thin flexible glass tube has a good transparent effect, allowing consumers to intuitively feel the smoke circulation and the change process of the materials in the flavor enhancement functional section, producing a certain visual impact effect, improving the user's consumption experience, and compared with the existing visualization materials, the thermal stability and strength are higher, and the visualization design of any part of the heated cigarette can be realized, which increases the visualization design space, especially the visualization of the cigarette core section.

[0018] 5. The flue gas condenses and exchanges heat with the outside air on the ultra-thin flexible glass tube, which has a better flue gas cooling effect than paper materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the heating cigarette based on the ultra-thin flexible glass tube of the utility model, in which the numbers 1 are the cigarette core section, 2 are the barrier section, 3 are the temperature reduction and flavor enhancement functional section, 4 are the filtering section, 5 are the sealing layer, and 6 are the ultra-thin flexible glass tube.

[0020] Figure 2 These are the thermogravimetric curves of paper tubes and ultra-thin flexible glass tubes.

[0021] Figure 3 The results of dynamic moisture adsorption test of heated cigarettes made of paper tubes and ultra-thin flexible glass tubes.

[0022] Figure 4 This is a physical picture of a heated cigarette made based on a paper tube before and after smoking.

[0023] Figure 5 This is a real picture of the heated cigarette made based on ultra-thin flexible glass tube before and after smoking. DETAILED DESCRIPTION

[0024] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0025] The utility model discloses a heating cigarette based on an ultra-thin flexible glass tube, which uses an ultra-thin flexible glass tube as an outer wrapping material. The ultra-thin flexible glass tube is prepared by a multi-layer curling process of ultra-thin flexible glass. Wherein: the curvature radius of the ultra-thin flexible glass used is 2.5-4.5 mm, so that the size of the glass tube after bending can be consistent with the size of the existing heated cigarette; the thickness of the ultra-thin flexible glass used is 20-40 μm. If the thickness is too small, multi-layer rolling and additional processes are required. If the thickness is too large, the elasticity is reduced, and the shaped glass tube is not used for machine testing. The radius of the prepared ultra-thin flexible glass tube is 3.0-3.8 mm, and the tube wall thickness is 60-150 μm. If the wall thickness is too thick, it is not conducive to heat transfer and the rigidity is increased. If the wall thickness is too low, the strength is not high. The glass tube is easily deformed during machine testing, which reduces the cigarette yield rate.

[0026] In a specific implementation, the preparation method of the ultra-thin flexible glass tube is as follows: first, a layer of adhesive (specifically, a sodium silicate aqueous solution) is evenly sprayed on the surface of the ultra-thin flexible glass, and then the glass surface coated with the adhesive is curled on a fixture with a radius of 2.9 to 3.7 mm, and each curled layer is heated and bonded (heated at 280°C for 5 minutes in the specific embodiment), and the number of curled layers is 3 to 5 layers. After curling, the glass tube is immersed in a mixed solution of polyimide and polyvinyl butyral ester (polyimide and polyvinyl butyral ester are dissolved in methanol, and the mass concentration of polyimide is 15% and the mass concentration of polyvinyl butyral ester is 3%) to form a buffer layer on the surface of the glass tube, and then cured at 80 to 150°C for 0.5 to 1.5h (cured at 80°C for 30min in the specific embodiment) to obtain an ultra-thin flexible glass tube.

[0027] In specific implementation, the heating cigarette based on the ultra-thin flexible glass tube is composed of a tobacco core segment, a barrier segment, a cooling and aroma enhancement functional segment, and a filter segment filled in the ultra-thin flexible glass tube in sequence, and the front end of the tobacco core segment is blocked by a blocking layer. Its preparation process is: a blocking layer is bonded to one end of the ultra-thin flexible glass tube to prepare a sealed glass tube, and then a step-by-step filling process is used to sequentially fill the tobacco core segment material, the barrier segment firmware, the cooling and aroma enhancement functional segment material, and the filter segment tow filter rod.

[0028] In a specific implementation, the blocking layer is a microporous glass sheet or a high-transparency molded paper. The pore size of the microporous glass sheet is 0.01-0.20 μm. The air permeability of the high-transparency molded paper is not less than 7000 CU.

[0029] In a specific implementation, the core segment is tobacco particles, tobacco columns or tobacco flakes. The particle size of tobacco particles is 20-60 meshes; the cross-sectional hole area of ​​the tobacco column is not less than 30%; the filling amount of tobacco flakes is 0.18-0.35g. The length of the core segment is 13-15mm.

[0030] In a specific implementation, the barrier section is a columnar or gear-shaped fixture with a through vent hole provided in the axial direction, wherein the diameter of a single vent hole is no greater than 0.25 mm, and the length of the fixture is 8 to 12 mm.

[0031] In a specific implementation, the material of the cooling and aroma enhancement functional section is phase-change slow-release aroma beads, aroma enhancement particles or gel aroma enhancement filter sticks. Phase-change slow-release aroma beads are round beads with a particle size of 3.0-3.8 mm and a phase change temperature of 50-75°C; aroma enhancement particles are granular materials with a particle size of 30-60 mesh and aroma; gel aroma enhancement filter sticks are filter sticks containing aroma and phase change materials, where the material phase change temperature is 50-75°C.

[0032] In a specific implementation, the filter section is a low retention tow filter rod.

[0033] Example 1

[0034] The heated cigarette of this embodiment uses an ultra-thin flexible glass tube as the outer wrapping material:

[0035] Ultra-thin flexible glass with a curvature radius of 3.4mm and a thickness of 35μm was used to prepare a glass tube with a diameter of about 7.0mm and a length of 45mm through three layers of curling, and the port was sealed with a high-transparency molding paper with an air permeability of 9000CU. Then, tobacco particles, barrier hardware, flavoring particles and filter rods were filled into the sealed glass tube in sequence. The tobacco particles used mixed particle size particles with a particle size of 20 to 60 meshes and a filling length of 15mm. The barrier hardware is a hollow honeycomb briquette-shaped bio-based cuttable barrier with a length of 10mm. The flavoring particles are cellulose particles with a particle size of 20 to 30 meshes loaded with tobacco extracts, with a filling length of 5mm and a total length of 10mm for the cooling and flavoring functional section. The filter material is a low-retention acetate filter rod with a length of 10mm.

[0036] Comparative Example 1

[0037] For comparison, the heated cigarette of this comparative example uses a paper tube as the outer wrapping material, which is different from Example 1 in that:

[0038] In this comparative example, heat-resistant paper with a curvature radius of 3.4 mm and a thickness of 40 μm is used, and is curled into a paper tube through a spiral process to prepare a paper tube with a diameter of about 7.0 mm and a length of 45 mm, which is used as an outer packaging material.

[0039] Figure 2 The thermogravimetric curves of paper tubes and ultra-thin flexible glass tubes show that the paper tubes begin to lose weight when heated at 250°C, and the weight loss ratio between 250 and 400°C is close to 50%. The glass tubes have almost no thermal weight loss when heated at 400°C, and their thermal stability is better than that of paper tubes.

[0040] Figure 3The dynamic moisture adsorption test results of heated cigarettes made of paper tubes and ultra-thin flexible glass tubes show that the maximum moisture content of paper tube cigarettes at 30°C and 80% RH is about 20%. The maximum moisture content of glass tube cigarettes at 30°C and 80% RH is only 5%, which is significantly lower than that of paper tubes.

[0041] Figure 4 and Figure 5 The following are the physical pictures of heated cigarettes made of paper tubes and ultra-thin flexible glass tubes before and after smoking. It can be seen that the paper tube cigarette has obvious carbonization marks on the appearance after smoking, and the thermal stability is poor. The glass tube cigarette has no carbonization marks on the appearance after smoking, and the thermal stability is significantly improved compared with the paper tube.

[0042] The above description is only an exemplary embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A heating cigarette based on an ultra-thin flexible glass tube, characterized in that: The heated cigarette uses an ultra-thin flexible glass tube as an outer wrapping material; the radius of the ultra-thin flexible glass tube is 3.0-3.8 mm, and the tube wall thickness is 60-150 μm; the heated cigarette is composed of a tobacco core segment, a barrier segment, a cooling and flavoring functional segment, and a filter segment which are sequentially filled in the ultra-thin flexible glass tube, and a sealing layer is provided at the front end of the tobacco core segment.

2. The heated cigarette based on the ultra-thin flexible glass tube according to claim 1, characterized in that: The ultra-thin flexible glass tube is a tubular structure made of ultra-thin flexible glass material.

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