EP4218432B1 - Particle type cigarette having magnetically-sealed downstream portion of particle section and manufacturing method therefor - Google Patents

Particle type cigarette having magnetically-sealed downstream portion of particle section and manufacturing method therefor Download PDF

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Publication number
EP4218432B1
EP4218432B1 EP22834835.5A EP22834835A EP4218432B1 EP 4218432 B1 EP4218432 B1 EP 4218432B1 EP 22834835 A EP22834835 A EP 22834835A EP 4218432 B1 EP4218432 B1 EP 4218432B1
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EP
European Patent Office
Prior art keywords
particle
section
paper tube
downstream
wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP22834835.5A
Other languages
German (de)
French (fr)
Other versions
EP4218432A4 (en
EP4218432A1 (en
Inventor
Yunhua QIN
Shanzhai SHANG
Wei Zhao
Xuemei Li
Qinpeng SHEN
Dalin YUAN
Ping LEI
Tinghua Li
Liu Yang
Donglai ZHU
Jun Wu
Ru WANG
Xi LV
Zhiyong Sun
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Tobacco Yunnan Industrial Co Ltd
Original Assignee
China Tobacco Yunnan Industrial Co Ltd
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Publication date
Application filed by China Tobacco Yunnan Industrial Co Ltd filed Critical China Tobacco Yunnan Industrial Co Ltd
Publication of EP4218432A1 publication Critical patent/EP4218432A1/en
Publication of EP4218432A4 publication Critical patent/EP4218432A4/en
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Publication of EP4218432B1 publication Critical patent/EP4218432B1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/02—Cigars; Cigarettes with special covers
    • A24D1/027—Cigars; Cigarettes with special covers with ventilating means, e.g. perforations
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/10—Chemical features of tobacco products or tobacco substitutes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18—Treatment of tobacco products or tobacco substitutes
    • A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
    • A24B15/42—Treatment of tobacco products or tobacco substitutes by chemical substances by organic and inorganic substances
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24C—MACHINES FOR MAKING CIGARS OR CIGARETTES
    • A24C5/00—Making cigarettes; Making tipping materials for, or attaching filters or mouthpieces to, cigars or cigarettes
    • A24C5/01—Making cigarettes for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/04—Cigars; Cigarettes with mouthpieces or filter-tips
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D1/00—Cigars; Cigarettes
    • A24D1/20—Cigarettes specially adapted for simulated smoking devices
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/046—Tobacco smoke filters characterised by their shape or structure with electrical or magnetical filtering means
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES OF CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter tips or filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces of cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/40—Constructional details, e.g. connection of cartridges and battery parts
    • A24F40/46—Shape or structure of electric heating means
    • A24F40/465—Shape or structure of electric heating means specially adapted for induction heating

Definitions

  • the present invention belongs to the field of tobacco, and in particular, to the technical field of particle-type cigarettes using tobacco particles as smoking materials.
  • Particle-type cigarette is a new type of heat-not-burn (abbreviated as HNB) cigarette in recent years, using tobacco particles instead of tobacco sheets as the smoking material, as tobacco particles are more uniformly heated than tobacco sheets, and smoke spreads more smoothly along the gap between the particles than the HNB tobacco sheet cigarette, it is popular among consumers.
  • HNB heat-not-burn
  • HNB cigarette of the prior art is disclosed in document CN113412971A .
  • Particle-type cigarettes are usually formed by filling tobacco particles into a paper tube sealed at the distal lip end to form a particle section and set a porous firmware section (or a gear), a cooling section (which can be a perforated cavity section, or a cavity section filled with cooling materials) and a filter section downstream of the particle section.
  • a porous firmware section or a gear
  • a cooling section which can be a perforated cavity section, or a cavity section filled with cooling materials
  • a filter section downstream of the particle section As tobacco particles are loose and fluid, if not constrained, they may flow to the downstream cavity section when the cigarette is placed horizontally, such tobacco particles flowing to the downstream may not be effectively heated by the heater, thus affecting the smoking effect; therefore, in all the current particle-type cigarette structures, components are designed to constrain the flow of tobacco particles, the upstream of particles is usually constrained by the sealing film, and the downstream is constrained by the porous firmware section (or gear).
  • the porous firmware section is usually made of ceramic or silicone, and its outer wall is firmly adhered to the inner wall of the paper tube through the adhesive, its center and/or the periphery are disposed with axial holes or ventilation slots that can be used for smoke passing through while not allowing tobacco particles to pass through, which can block tobacco particles while transmitting smoke.
  • the porous firmware section is firmly adhered to the inner wall of the paper tube to prevent tobacco particles from pushing the porous firmware section to the downstream under the insertion force of the heating plate.
  • the existence of the porous firmware section has brought inconveniences to industrialization of particle-type cigarettes. Therefore, persons skilled in the art have always been wishing to eliminate the porous firmware section.
  • the present invention aims to solve the above-mentioned problems.
  • a first aspect of the present invention discloses a particle-type cigarette wherein downstream of a particle section is magnetically sealed.
  • the cigarette includes a paper tube 5, a sealing film 1 that seals the distal lip end of the paper tube 5, the particle filling section is located in the downstream of the sealing film 1, and the particle filling section is filled with uniformly mixed tobacco particles 2 and susceptor particles 3, the particle filling section is located immediately downstream of the magnet chip bridging layer 9, which is circumferentially magnetically fixed to the wall-attached iron foil ring 4 on the inner surface of or inside the side wall of the paper tube 5 , the downstream of the magnet chip bridging layer 9 is successively the cavity section 7 and the filter section 8.
  • the upstream and downstream are determined by the direction of smoke flow.
  • the susceptor particle 3 is used to induce heat under the action of an external alternating electromagnetic field and in situ heat the tobacco particle 2 to make it smoke.
  • the side wall of the cavity section 7 has ventilation holes 6.
  • the external air can enter the cavity section through the ventilation holes to mix with the smoke and cool the smoke.
  • the magnet chip bridging layer 9 is a permeable bridging layer formed by stacking and bridging of bar magnet chips.
  • the layer formed with the bridging is usually naturally permeable, which does not need to be deliberately controlled.
  • the wall-attached iron foil ring 4 is prefabricated on the inner surface of or inside the side wall of the paper tube 5, and the wall-attached iron foil ring 4 is a continuous or discontinuous ring, preferably a discontinuous ring.
  • the wall-attached iron foil ring 4 extends, e.g., 3-6 mm, upwards in the cigarette in the axial direction to control the thickness of the magnet chip bridging layer 9.
  • the paper tube 5 is an integral paper tube, and the wall-attached iron foil ring 4 is adhered to the surface of or inside the paper material before the paper material is rolled into paper tube and is rolled with the paper material to be preset on the paper tube, whereby the wall-attached iron foil ring 4 is firmly fixed with the paper tube 5, thereby providing magnetic fixation for the magnet chip bridging layer 9.
  • a second aspect of the present invention discloses a manufacturing method of the particle-type cigarette wherein downstream of a particle section is magnetically sealed, the method includes the following steps: the paper tube 5 with a wall-attached iron foil ring 4 prefabricated on the side wall is provided, the distal lip end is sealed with the sealing film 1, the paper tube 5 is erected and filled with uniformly mixed tobacco particles 2 and susceptor particles 3 until the particle level reaches the vicinity of the wall-attached iron foil ring 4, e.g., it can be ⁇ 2-3mm away from the upstream edge of the wall-attached iron foil ring 4, the bar magnet chip precursors are filled into the paper tube 5 and stacked with each other to bridging, the bar magnet chip precursors are magnetized by an external magnetic field to convert into bar magnet chips, which are attracted with each other and attract the wall-attached iron foil ring 4 with magnetic force to form the magnet chip bridging layer 9, the cavity section 7 is reserved and the filter section 8 is filled downstream of the cavity section 7.
  • the magnet chip precursors such as iron chips, steel chips or ferrite chips, are not originally magnetic, however, they can obtain magnetism under the action of an external magnetic field, especially a strong directional magnetic field, and maintain magnetism for a long time, which can be up to several months to several years.
  • Such magnet chip precursors are known materials in the field of magnetic materials.
  • ventilation holes 6 are also preset on the side wall of the paper tube 5 corresponding to the cavity section 7.
  • FIG.1 is a schematic structural view of a magnetically sealed particle-type cigarette downstream of the particle section of the present invention.
  • the particle-type cigarette wherein downstream of a particle section is magnetically sealed of the present invention include a paper tube 5, a sealing film 1 that blocks the distal lip end of the paper tube 5, a particle filling section located immediately downstream of the sealing film 1, the particle filling section accommodates uniformly mixed tobacco particles 2 and susceptor particles 3, a magnet chip bridging layer 9 is located immediately downstream of the particle filling section, the magnet chip bridging layer 9 is circumferentially magnetically fixed to the wall-attached iron foil ring 4 on the inner surface of or inside the side wall of the paper tube 5, the downstream of the magnet chip bridging layer 9 is successively the cavity section 7 and the filter section 8.
  • the embodiment relates to a manufacturing method of the particle-type cigarette wherein downstream of a particle section is magnetically sealed, the method includes the following steps: the paper tube 5 with a wall-attached iron foil ring 4 prefabricated on the side wall is provided, the distal lip end is sealed with the sealing film 1, the paper tube 5 is erected and filled with uniformly mixed tobacco particles 2 and susceptor particles 3 until the particle level reaches the vicinity of the wall-attached iron foil ring 4, e.g., it can be ⁇ 3-5mm away from the upstream edge of the wall-attached iron foil ring 4, the bar magnet chip precursors are filled into the paper tube 5 and stacked with each other to bridge, the bar magnet chip precursors are magnetized by an external magnetic field to convert them into bar magnet chips, which are attracted with each other and attract the wall-attached iron foil ring 4 with magnetic force to form the magnet chip bridging layer 9, the cavity section 7 is reserved and the filter section 8 is filled downstream of the cavity section 7.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Description

    TECHNICAL FIELD
  • The present invention belongs to the field of tobacco, and in particular, to the technical field of particle-type cigarettes using tobacco particles as smoking materials.
    • BACKGROUND
  • Particle-type cigarette is a new type of heat-not-burn (abbreviated as HNB) cigarette in recent years, using tobacco particles instead of tobacco sheets as the smoking material, as tobacco particles are more uniformly heated than tobacco sheets, and smoke spreads more smoothly along the gap between the particles than the HNB tobacco sheet cigarette, it is popular among consumers.
  • An example of HNB cigarette of the prior art is disclosed in document CN113412971A .
  • Particle-type cigarettes are usually formed by filling tobacco particles into a paper tube sealed at the distal lip end to form a particle section and set a porous firmware section (or a gear), a cooling section (which can be a perforated cavity section, or a cavity section filled with cooling materials) and a filter section downstream of the particle section. As tobacco particles are loose and fluid, if not constrained, they may flow to the downstream cavity section when the cigarette is placed horizontally, such tobacco particles flowing to the downstream may not be effectively heated by the heater, thus affecting the smoking effect; therefore, in all the current particle-type cigarette structures, components are designed to constrain the flow of tobacco particles, the upstream of particles is usually constrained by the sealing film, and the downstream is constrained by the porous firmware section (or gear).
  • The porous firmware section is usually made of ceramic or silicone, and its outer wall is firmly adhered to the inner wall of the paper tube through the adhesive, its center and/or the periphery are disposed with axial holes or ventilation slots that can be used for smoke passing through while not allowing tobacco particles to pass through, which can block tobacco particles while transmitting smoke. Besides, when the resistance heating plate or electromagnetic heating plate is inserted into the particle section for central heating, the porous firmware section is firmly adhered to the inner wall of the paper tube to prevent tobacco particles from pushing the porous firmware section to the downstream under the insertion force of the heating plate. However, the existence of the porous firmware section has brought inconveniences to industrialization of particle-type cigarettes. Therefore, persons skilled in the art have always been wishing to eliminate the porous firmware section.
  • The present invention aims to solve the above-mentioned problems.
    • SUMMARY
  • A first aspect of the present invention discloses a particle-type cigarette wherein downstream of a particle section is magnetically sealed. The cigarette includes a paper tube 5, a sealing film 1 that seals the distal lip end of the paper tube 5, the particle filling section is located in the downstream of the sealing film 1, and the particle filling section is filled with uniformly mixed tobacco particles 2 and susceptor particles 3, the particle filling section is located immediately downstream of the magnet chip bridging layer 9, which is circumferentially magnetically fixed to the wall-attached iron foil ring 4 on the inner surface of or inside the side wall of the paper tube 5 , the downstream of the magnet chip bridging layer 9 is successively the cavity section 7 and the filter section 8.
  • The upstream and downstream are determined by the direction of smoke flow.
  • The susceptor particle 3 is used to induce heat under the action of an external alternating electromagnetic field and in situ heat the tobacco particle 2 to make it smoke.
  • Preferably, the side wall of the cavity section 7 has ventilation holes 6. During user smoking, the external air can enter the cavity section through the ventilation holes to mix with the smoke and cool the smoke.
  • Wherein, the magnet chip bridging layer 9 is a permeable bridging layer formed by stacking and bridging of bar magnet chips. The layer formed with the bridging is usually naturally permeable, which does not need to be deliberately controlled.
  • Preferably, the wall-attached iron foil ring 4 is prefabricated on the inner surface of or inside the side wall of the paper tube 5, and the wall-attached iron foil ring 4 is a continuous or discontinuous ring, preferably a discontinuous ring. The wall-attached iron foil ring 4 extends, e.g., 3-6 mm, upwards in the cigarette in the axial direction to control the thickness of the magnet chip bridging layer 9.
  • Preferably, the paper tube 5 is an integral paper tube, and the wall-attached iron foil ring 4 is adhered to the surface of or inside the paper material before the paper material is rolled into paper tube and is rolled with the paper material to be preset on the paper tube, whereby the wall-attached iron foil ring 4 is firmly fixed with the paper tube 5, thereby providing magnetic fixation for the magnet chip bridging layer 9.
  • A second aspect of the present invention discloses a manufacturing method of the particle-type cigarette wherein downstream of a particle section is magnetically sealed, the method includes the following steps: the paper tube 5 with a wall-attached iron foil ring 4 prefabricated on the side wall is provided, the distal lip end is sealed with the sealing film 1, the paper tube 5 is erected and filled with uniformly mixed tobacco particles 2 and susceptor particles 3 until the particle level reaches the vicinity of the wall-attached iron foil ring 4, e.g., it can be ±2-3mm away from the upstream edge of the wall-attached iron foil ring 4, the bar magnet chip precursors are filled into the paper tube 5 and stacked with each other to bridging, the bar magnet chip precursors are magnetized by an external magnetic field to convert into bar magnet chips, which are attracted with each other and attract the wall-attached iron foil ring 4 with magnetic force to form the magnet chip bridging layer 9, the cavity section 7 is reserved and the filter section 8 is filled downstream of the cavity section 7.
  • The magnet chip precursors, such as iron chips, steel chips or ferrite chips, are not originally magnetic, however, they can obtain magnetism under the action of an external magnetic field, especially a strong directional magnetic field, and maintain magnetism for a long time, which can be up to several months to several years. Such magnet chip precursors are known materials in the field of magnetic materials.
  • Preferably, ventilation holes 6 are also preset on the side wall of the paper tube 5 corresponding to the cavity section 7.
  • The above technical solutions can be freely combined under the premise of no contradiction.
  • The present invention has the following beneficial effects:
    1. 1. The magnet chip bridging layer can also play the role of restraining tobacco particles and passing through the smoke.
    2. 2. The present invention is especially suitable for use in combination with HNB particle-type cigarette of magnetic particle with homogeneous heat, as susceptor particles are mixed with tobacco particles and heated in situ under the action of an external alternating magnetic field, and there is no need to additionally insert a resistance heating plate or an electromagnetic heating plate into the smoking particle section; thus, there is no insertion force that may drive the particles towards the downstream of cigarettes. Therefore, the magnetic force of the magnet chips can be used to attract and bridge, which is sufficient to provide constraints on the particles, without using a solid porous firmware section.
    3. 3. The present invention subtly replaces the porous firmware section with a magnet chip bridging layer, thus eliminating inconvenience of producing porous firmware section in the industrialization of cigarettes.
    BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG.1 is a schematic structural view of a magnetically sealed particle-type cigarette downstream of the particle section of the present invention.
    • List of signs in the drawings:
    1. 1. Sealing film
    2. 2. Tobacco particles
    3. 3. Susceptor particles
    4. 4. Wall-attached iron foil ring
    5. 5. Paper tube
    6. 6. Ventilation hole
    7. 7. Cavity section
    8. 8. Filter section
    9. 9. Magnet chip bridging layer.
    DETAILED DESCRIPTION OF THE EMBODIMENTS
  • The content of the present invention is further described below through specific embodiments.
    • Embodiment 1
  • As is shown in FIG.1, the particle-type cigarette wherein downstream of a particle section is magnetically sealed of the present invention include a paper tube 5, a sealing film 1 that blocks the distal lip end of the paper tube 5, a particle filling section located immediately downstream of the sealing film 1, the particle filling section accommodates uniformly mixed tobacco particles 2 and susceptor particles 3, a magnet chip bridging layer 9 is located immediately downstream of the particle filling section, the magnet chip bridging layer 9 is circumferentially magnetically fixed to the wall-attached iron foil ring 4 on the inner surface of or inside the side wall of the paper tube 5, the downstream of the magnet chip bridging layer 9 is successively the cavity section 7 and the filter section 8.
    • Embodiment 2
  • The embodiment relates to a manufacturing method of the particle-type cigarette wherein downstream of a particle section is magnetically sealed, the method includes the following steps: the paper tube 5 with a wall-attached iron foil ring 4 prefabricated on the side wall is provided, the distal lip end is sealed with the sealing film 1, the paper tube 5 is erected and filled with uniformly mixed tobacco particles 2 and susceptor particles 3 until the particle level reaches the vicinity of the wall-attached iron foil ring 4, e.g., it can be ±3-5mm away from the upstream edge of the wall-attached iron foil ring 4, the bar magnet chip precursors are filled into the paper tube 5 and stacked with each other to bridge, the bar magnet chip precursors are magnetized by an external magnetic field to convert them into bar magnet chips, which are attracted with each other and attract the wall-attached iron foil ring 4 with magnetic force to form the magnet chip bridging layer 9, the cavity section 7 is reserved and the filter section 8 is filled downstream of the cavity section 7.
  • The above are only specific embodiments of the present invention, the protection scope of the present invention is not limited thereto. Persons skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention should be included within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (7)

  1. A particle-type cigarette wherein downstream of a particle section is magnetically sealed, the cigarette comprises a paper tube (5), a sealing film (1) that blocks the distal lip end of the paper tube (5), a particle filling section located immediately downstream of the sealing film (1), the particle filling section is filled with uniformly mixed tobacco particles (2) and susceptor particles (3), characterized in that, a magnet chip bridging layer (9) is located immediately downstream of the particle filling section, the magnet chip bridging layer (9) is circumferentially magnetically fixed to a wall-attached iron foil ring (4) on the inner surface of or inside the side wall of the paper tube (5) , the downstream of the magnet chip bridging layer (9) is successively a cavity section (7) and a filter section (8).
  2. The particle-type cigarette wherein downstream of a particle section is magnetically sealed according to claim 1, wherein, the side wall of the cavity section (7) has ventilation holes (6).
  3. The particle-type cigarette wherein downstream of a particle section is magnetically sealed according to claim 1, wherein, the magnet chip bridging layer (9) is a permeable bridging layer formed by stacking and bridging of bar magnet chips.
  4. The particle-type cigarette wherein downstream of a particle section is magnetically sealed according to claim 1, wherein, the wall-attached iron foil ring (4) is prefabricated on the inner surface of or inside the side wall of the paper tube (5), and the wall-attached iron foil ring (4) is a continuous or discontinuous ring.
  5. The particle-type cigarette wherein downstream of a particle section is magnetically sealed according to claim 4, wherein, the paper tube (5) is an integral paper tube, and the wall-attached iron foil ring (4) is adhered to the surface of or inside the paper material before the paper material is rolled into paper tube and is rolled with the paper material into paper tube to be preset on the paper tube.
  6. A manufacturing method of the particle-type cigarette wherein downstream of a particle section is magnetically sealed according to claim 1, characterized in that, the method comprises the following steps: the paper tube (5) with a wall-attached iron foil ring (4) prefabricated on the side wall is provided, the distal lip end is sealed with the sealing film (1), the paper tube (5) is erected and filled with uniformly mixed tobacco particles (2) and susceptor particles (3) until the particle level reaches the vicinity of the wall-attached iron foil ring (4), the bar magnet chip precursors are filled into the paper tube (5) and stacked with each other to bridge, the bar magnet chip precursors are magnetized by an external magnetic field to convert into bar magnet chips, which are attracted with each other and attract the wall-attached iron foil ring (4) with magnetic force to form the magnet chip bridging layer (9), the cavity section (7) is reserved and the filter section (8) is filled downstream of the cavity section (7).
  7. The manufacturing method according to claim 6, characterized in that, the side wall of the paper tube (5) corresponding to the cavity section (7) is preset with ventilation holes (6).
EP22834835.5A 2021-12-07 2022-06-24 Particle type cigarette having magnetically-sealed downstream portion of particle section and manufacturing method therefor Active EP4218432B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111484431.6A CN113966860B (en) 2021-12-07 2021-12-07 A particle-type cigarette with magnetic sealing type in the downstream of particle section and a manufacturing method thereof
PCT/CN2022/101217 WO2023103348A1 (en) 2021-12-07 2022-06-24 Particle type cigarette having magnetically-sealed downstream portion of particle section and manufacturing method therefor

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EP4218432A1 EP4218432A1 (en) 2023-08-02
EP4218432A4 EP4218432A4 (en) 2024-04-03
EP4218432B1 true EP4218432B1 (en) 2024-09-11

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CN (1) CN113966860B (en)
WO (1) WO2023103348A1 (en)

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CN113966860B (en) * 2021-12-07 2024-11-15 云南中烟工业有限责任公司 A particle-type cigarette with magnetic sealing type in the downstream of particle section and a manufacturing method thereof
CN116649622A (en) * 2022-02-18 2023-08-29 云南中烟工业有限责任公司 A smoking section with a skirt spacer and its preparation method and particle type cigarettes
CN116687057A (en) * 2022-02-28 2023-09-05 云南中烟工业有限责任公司 Particle type cigarette for electromagnetic induction heating and preparation method thereof
WO2023178643A1 (en) * 2022-03-25 2023-09-28 云南中烟工业有限责任公司 Particle type aerosol generating product without multi-through-hole fixed member segment
CN114732158B (en) * 2022-03-25 2025-04-29 云南中烟工业有限责任公司 A particle-type aerosol generating article without using a multi-through-hole fastener segment

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CN113966860A (en) 2022-01-25
EP4218432A1 (en) 2023-08-02

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