WO2023103348A1 - 一种颗粒段下游磁封式颗粒型烟支及其制造方法 - Google Patents

一种颗粒段下游磁封式颗粒型烟支及其制造方法 Download PDF

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WO2023103348A1
WO2023103348A1 PCT/CN2022/101217 CN2022101217W WO2023103348A1 WO 2023103348 A1 WO2023103348 A1 WO 2023103348A1 CN 2022101217 W CN2022101217 W CN 2022101217W WO 2023103348 A1 WO2023103348 A1 WO 2023103348A1
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WIPO (PCT)
Prior art keywords
section
paper tube
particle
magnetic
downstream
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PCT/CN2022/101217
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English (en)
French (fr)
Inventor
秦云华
尚善斋
赵伟
李雪梅
申钦鹏
袁大林
雷萍
李廷华
杨柳
朱东来
吴俊�
王汝�
吕茜
孙志勇
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云南中烟工业有限责任公司
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Priority to EP22834835.5A priority Critical patent/EP4218432A4/en
Publication of WO2023103348A1 publication Critical patent/WO2023103348A1/zh

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR 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 FOR 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 FOR 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 FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for 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 FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for 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 FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for 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 invention belongs to the field of tobacco, in particular to the technical field of particle-type cigarettes with tobacco particles as smoking materials.
  • Particulate cigarettes are a new type of Heat-Not-Burn (HNB) cigarettes in recent years, which use tobacco particles instead of tobacco sheets as the smoking material, and tobacco particles are heated more uniformly than tobacco sheets. Moreover, the smoke diffuses along the inter-particle gap more smoothly than tobacco sheet HNB cigarettes, so it is very popular among consumers.
  • HNB Heat-Not-Burn
  • Particle type cigarettes are usually filled with tobacco particles into a paper tube sealed at the far lip end to form a particle section, and a porous solid section (or gear), a cooling section (which can be a holed cavity section) is arranged downstream of the particle section Or the cavity section is filled with cooling material) and filter section. Since the tobacco particles are loose and fluid, if they are not restrained, they will flow into the downstream cavity section when the cigarette is placed horizontally, and these tobacco particles flowing downstream will not be effectively heated by the heater, affecting Smoke effect, so all current particle-type cigarette structures are designed with components that restrict tobacco particles so that they do not flow around.
  • the upstream of the particles is usually restrained by a sealing film, and the downstream is used by a porous solid section (or gear). to constrain.
  • the material of the porous fastener segment is usually ceramic or silica gel, and its outer wall is firmly pasted on the inner wall of the paper tube by an adhesive.
  • the center and/or outer periphery have axial through holes or ventilation grooves that allow smoke to pass through but do not allow tobacco particles to pass through. Blocking tobacco particles can also transmit smoke.
  • a resistance heating sheet or an electromagnetic heating sheet is inserted into the particle section for central heating, the porous solid section is firmly adhered to the inner wall of the paper tube, preventing the tobacco particles from pushing the porous solid section under the force of the heating sheet insertion. itself moves downstream.
  • the existence of the porous solid section brings a lot of inconvenience to the industrial manufacture of granular cigarettes. Therefore, those skilled in the art always hope to cancel the porous solid section.
  • the present invention aims to solve the above-mentioned problems.
  • the first aspect of the present invention discloses a magnetic-sealed granule-type cigarette branch downstream of the granule segment.
  • the cigarette comprises a paper tube 5 and a sealing film 1 sealing the far lip end of the paper tube 1, which is located next to the sealing film 1.
  • the particle filling section downstream is filled with uniformly mixed tobacco particles 2 and receptor particles 3, and the particle filling section is immediately downstream of the magnetic chip bridging layer 9, and the magnetic chip bridging layer 9 is circumferentially It is magnetically fixed with the wall-attached iron foil ring 4 located on the inner surface of the side wall of the paper cylinder 5 or inside the side wall.
  • the downstream of the magnetic chip bridging layer 9 is the cavity section 7 and the filter section 8 in sequence.
  • upstream and downstream are determined by the flow direction of the flue gas.
  • the susceptor particles 3 are used for inductive heating under the action of an external alternating electromagnetic field to heat the tobacco particles 2 in situ to make them smoke.
  • ventilation holes 6 on the side wall of the cavity section 7 .
  • the outside air can enter the cavity section through the vent hole to mix with the smoke and cool the smoke.
  • the magnetic shavings bridging layer 9 is a gas-permeable bridging layer formed by stacking bar-shaped magnetic shavings and bridging each other.
  • the layer formed by the bridging effect is usually naturally breathable, which does not need to be deliberately controlled.
  • the iron foil ring 4 attached to the wall is prefabricated on the inner surface of the side wall of the paper tube 5 or within the side wall, and the iron foil ring 4 attached to the wall is a continuous ring or a discontinuous ring, preferably is a discontinuous ring.
  • the wall-attached iron foil ring 4 extends for a certain length, such as 3-6 mm, in the axial direction of the cigarette, so as to control the thickness of the magnet chip bridging layer 9 .
  • the paper tube 5 is an integral paper tube, and the iron foil ring 4 attached to the wall is adhered to the surface of the paper material or located inside the paper material and rolled with the paper material before the paper material is rolled into the paper tube. It is made into a paper tube and preset on the paper tube, so that the iron foil ring 4 and the paper tube 5 are firmly fixed, thereby providing magnetic fixation for the magnetic chip bridging layer 9 .
  • the second aspect of the present invention relates to the manufacturing method of the magnetic-sealed granular cigarettes downstream of the granular section according to the first aspect of the present invention.
  • the method includes the following steps: providing the iron foil ring 4 prefabricated on the side wall Paper tube 5, then its far lip end is sealed with parafilm 1, then this paper tube 4 is erected and filled into it with evenly mixed tobacco particles 2 and susceptor particles 3 until the particle material level reaches the iron foil ring attached to the wall 4, for example, it can be about ⁇ 2-3mm from the upstream edge of the wall-attached iron foil ring 4, and then fill the strip-shaped magnet chip precursors into the paper tube 4 and make them stack and bridge each other, and then use an external magnetic field to separate the strips.
  • the precursors of the magnet chips are not originally magnetic, but they can obtain magnetism under the action of an external magnetic field, especially a directional strong magnetic field, and maintain the magnetism for a long time up to several months to several years.
  • Such magnet chip precursors are known materials in the field of magnetic materials.
  • a ventilation hole 6 is preset on the side wall of the paper tube 4 corresponding to the cavity section 7 .
  • the bridging layer of magnetic chips can also play a role in restraining tobacco particles and passing through smoke.
  • the present invention is especially suitable for use in combination with magnetic particle soaking type HNB particle type cigarettes, because the 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 sheet into the smoke particle section Or an electromagnetic heating sheet, and then there is no insertion force to push the particles downstream. Therefore, it is sufficient to provide constraints on the particles by using magnetic chips to magnetically attract each other and bridging each other, without having to use a solid porous solid section for constraints.
  • the present invention skillfully replaces the porous fastener section with the bridging layer of magnetic chips, and cancels the porous fastener section, which can eliminate various inconveniences it brings to the industrial production of cigarettes.
  • Fig. 1 is a schematic structural diagram of a magnetic-sealed particle-type cigarette downstream of the particle section of the present invention.
  • the magnetic-sealed granular cigarettes downstream of the particle section of the present invention include a paper tube 5, a sealing film 1 that blocks the far lip end of the paper tube 1, and a particle filling section located immediately downstream of the sealing film 1
  • the particle filling section contains uniformly mixed tobacco particles 2 and receptor particles 3, and the particle filling section is immediately downstream of the magnetic chip bridging layer 9, which is located in the circumferential direction of the magnetic chip bridging layer 9 on the paper tube 5
  • the wall-attached iron foil ring 4 on the inner surface of the side wall or within the side wall is magnetically fixed, and the downstream of the magnetic chip bridging layer 9 is a cavity section 7 and a filter section 8 in sequence
  • This embodiment relates to a method for manufacturing magnetic-sealed particle-type cigarettes downstream of the particle section.
  • the method includes the following steps: providing a paper tube 5 with a prefabricated iron foil ring 4 on the side wall, and then using the far lip end The parafilm 1 is sealed, and then the paper tube 4 is erected and filled with uniformly mixed tobacco particles 2 and sensor particles 3 until the particle level reaches the vicinity of the iron foil ring 4, for example, it can be separated from the iron foil ring 4.
  • the upstream edge of the ring 4 is about ⁇ 3-5mm, and then fill the strip-shaped magnet chip precursor into the paper tube 4 and make them stack and bridge each other, and then use an external magnetic field to magnetize the strip-shaped magnet chip precursor to convert it It is bar-shaped magnet shavings, these bar-shaped magnet shavings are magnetically attracted to each other and to the wall-attached iron foil ring 4, thereby forming the magnetic shavings bridging layer 9, and then leaving the cavity section 7, 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)

Abstract

一种颗粒段下游磁封式颗粒型烟支及其制造方法。颗粒段下游磁封式颗粒型烟支包括纸筒(5)、封堵住纸筒(5)的远唇端的封口膜(1)，位于封口膜(1)紧接下游的颗粒填充段，颗粒填充段中容纳着均匀混合的烟草颗粒(2)和感受器颗粒(3)，颗粒填充段紧接下游是磁铁屑架桥层(9)，磁铁屑架桥层(9)周向与位于纸筒(5)侧壁内表面或侧壁之内的附壁铁箔环(4)磁力固定，磁铁屑架桥层(9)下游依次是空腔段(7)和过滤段(8)。

Description

一种颗粒段下游磁封式颗粒型烟支及其制造方法 技术领域
本发明属于烟草领域，尤其是以烟草颗粒为发烟材料的颗粒型烟支技术领域。
背景技术
颗粒型烟支是近年来新型的一种加热不燃烧型(Heat-Not-Burn，缩写为HNB)烟支，其以烟草颗粒代替烟草薄片作为发烟材料，烟草颗粒比烟草薄片受热更均匀，且烟雾沿颗粒间间隙扩散也比烟草薄片类HNB烟支更顺畅，因此深受消费者喜爱。
颗粒型烟支通常是将烟草颗粒填充到远唇端封口的纸筒中形成颗粒段，并在颗粒段下游设置带有多孔固件段(或曰齿轮件)、冷却段(可以是带孔空腔段或空腔段内填充有冷却材料)和过滤段而形成的。由于烟草颗粒是松散的且具有流动性，如果不加约束，其将会在烟支水平放置时流动到下游的空腔段中，这些流动到下游的烟草颗粒将不能被加热器有效加热，影响发烟效果，故当前所有的颗粒型烟支结构中，都设计有约束烟草颗粒使之不四处流动的部件，其中颗粒上游通常用封口膜来约束，下游用多孔固件段(或曰齿轮件)来约束。
多孔固件段材质通常是陶瓷或硅胶，其外壁通过粘合剂牢固粘贴在纸筒内壁上，中心和/或外周具有可供烟雾通过但不允许烟草颗粒通过的轴向通孔或通气槽，既封堵烟草颗粒又能传递烟气。此外，在将电阻发热片或电磁发热片插入到颗粒段中进行中心加热时，多孔固件段因牢固粘附在纸筒内壁上，还能防止烟草颗粒在加热片插入力推动下推动多孔固件段本身向下游移动。但多孔固件段的存在给颗粒型烟支的工业化制造带来了诸多不便，因此，本领域技术人员一直希望能取消掉该多孔固件段。
本发明旨在解决上述问题。
发明内容
本发明第一方面公开了一种颗粒段下游磁封式颗粒型烟支，所述烟支包括纸筒5、封堵住所述纸筒1的远唇端的封口膜1，位于封口膜1紧接下游的颗粒填 充段，所述颗粒填充段中填充有均匀混合的烟草颗粒2和感受器颗粒3，所述颗粒填充段紧接下游是磁铁屑架桥层9，该磁铁屑架桥层9周向与位于纸筒5侧壁内表面上或侧壁之内的附壁铁箔环4磁力固定，所述磁铁屑架桥层9下游是依次是空腔段7和过滤段8。
其中所述上下游是以烟气流动方向而确定的。
所述感受器颗粒3用于在外界交变电磁场作用下感应发热而原位加热所述烟草颗粒2使之发烟。
优选地，所述空腔段7侧壁上具有通气孔6。在用户抽吸作用下，外界空气可经由该通气孔进入空腔段以与烟气混合并冷却烟气。
其中，所述磁铁屑架桥层9是由条形磁铁屑堆叠并彼此架桥而形成的透气性架桥层。该架桥作用而形成的层，通常都是天然具有透气性的，这个无需刻意控制。
优选地，所述附壁铁箔环4是预制在所述纸筒5侧壁内表面上或预制在侧壁之内的，且所述附壁铁箔环4是连续环或间断环，优选是间断环。所述附壁铁箔环4在烟支轴向上延伸一段长度，例如3-6mm，以控制所述磁铁屑架桥层9的厚度。
优选地，所述纸筒5为整体式纸筒，所述附壁铁箔环4是在由纸材卷制纸筒前就粘附在纸材表面上或位于纸材内部并随纸材卷制成纸筒而预设在该纸筒上的，由此所述附壁铁箔环4与纸筒5形成牢固固定，从而为所述磁铁屑架桥层9提供磁力固定。
本发明第二方面涉及根据本发明第一方面所述的颗粒段下游磁封式颗粒型烟支的制造方法，所述方法包括如下步骤：提供侧壁上已经预制有附壁铁箔环4的纸筒5，然后将其远唇端用封口膜1封口，然后将该纸筒4竖立并向其内填充均匀混合的烟草颗粒2和感受器颗粒3直至颗粒料位达到所述附壁铁箔环4附近，例如可距离该附壁铁箔环4的上游边沿±2-3mm左右，然后向纸筒4内填充条形磁铁屑前体并使之彼此堆叠架桥，然后用外磁场对该条形磁铁屑前体进行磁化而使之转化为条形磁铁屑，这些条形磁体屑彼此磁力相吸并与所述附壁铁箔环4磁力相吸，从而形成所述磁铁屑架桥层9，然后留出所述空腔段7，并在所述空腔段7下游填充所述过滤段8。
所述磁铁屑前体例如铁屑、钢屑或铁氧体屑，其原本不具有磁性，但可在外加磁场尤其是定向强磁场作用下获得磁性并将该磁性保持相当长时间可达数月至数年。这样的磁铁屑前体是磁性材料领域中的已知材料。
优选地，所述纸筒4的对应于所述空腔段7的侧壁上还预设有通气孔6。
上述技术方案在不矛盾的前提下，可自由组合。
本发明具有以下有益效果：
1、磁铁屑架桥层同样能起到约束烟草颗粒并透过烟气的作用。
2、本发明尤其适合与磁粒均热型HNB颗粒型烟支组合使用，因为感受器颗粒与烟草颗粒混合并在外界交变磁场作用下原位加热，无需向发烟颗粒段额外插入电阻发热片或电磁发热片，进而不存在插入力对颗粒的向下游推动力，因此，可以用磁铁屑磁力相吸彼此架桥方式就足以对颗粒提供约束，而不必用坚固的多孔固件段进行约束。
3、本发明巧妙地用磁铁屑架桥层来代替多孔固件段，取消了多孔固件段可以消除其带给烟支工业化生产的各种不便之处。
附图说明
图1为本发明的颗粒段下游磁封式颗粒型烟支的结构示意图。
附图标记列表：
1、封口膜
2、发烟颗粒
3、感受器颗粒
4、附壁铁箔环
5、纸筒
6、通气孔
7、空腔段
8、过滤段
9、磁铁屑架桥层。
具体实施方式
下面通过具体实施方式进一步说明本发明的内容。
实施例1
如图1所示，本发明的颗粒段下游磁封式颗粒型烟支包括纸筒5、封堵住所述纸筒1的远唇端的封口膜1，位于封口膜1紧接下游的颗粒填充段，所述颗粒填充段中容纳着均匀混合的烟草颗粒2和感受器颗粒3，所述颗粒填充段紧接下游是磁铁屑架桥层9，该磁铁屑架桥层9周向与位于纸筒5侧壁内表面上或侧壁之内的附壁铁箔环4磁力固定，所述磁铁屑架桥层9下游是依次是空腔段7和过滤段8
实施例2
本实施例涉及颗粒段下游磁封式颗粒型烟支的制造方法，所述方法包括如下步骤：提供侧壁上已经预制有附壁铁箔环4的纸筒5，然后将其远唇端用封口膜1封口，然后将该纸筒4竖立并向其内填充均匀混合的烟草颗粒2和感受器颗粒3直至颗粒料位达到所述附壁铁箔环4附近，例如可距离该附壁铁箔环4的上游边沿±3-5mm左右，然后向纸筒4内填充条形磁铁屑前体并使之彼此堆叠架桥，然后用外磁场对该条形磁铁屑前体进行磁化而使之转化为条形磁铁屑，这些条形磁体屑彼此磁力相吸并与所述附壁铁箔环4磁力相吸，从而形成所述磁铁屑架桥层9，然后留出所述空腔段7，并在所述空腔段7下游填充所述过滤段8。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应以权利要求的保护范围为准。

Claims (7)

  1. 一种颗粒段下游磁封式颗粒型烟支，所述烟支包括纸筒(5)、封堵住所述纸筒(1)的远唇端的封口膜(1)，位于封口膜(1)紧接下游的颗粒填充段，所述颗粒填充段中填充有均匀混合的烟草颗粒(2)和感受器颗粒(3)，其特征在于，所述颗粒填充段紧接下游是磁铁屑架桥层(9)，该磁铁屑架桥层(9)周向与位于纸筒(5)侧壁内表面或侧壁之内的附壁铁箔环(4)磁力固定，所述磁铁屑架桥层(9)下游是依次是空腔段(7)和过滤段(8)。
  2. 根据权利要求1所述的颗粒段下游磁封式颗粒型烟支，其特征在于，所述空腔段(7)侧壁上具有通气孔(6)。
  3. 根据权利要求1所述的颗粒段下游磁封式颗粒型烟支，其特征在于，所述磁铁屑架桥层(9)是由条形磁铁屑堆叠并彼此架桥而形成的透气性架桥层。
  4. 根据权利要求1所述的颗粒段下游磁封式颗粒型烟支，其特征在于，所述附壁铁箔环(4)是预制在所述纸筒(5)侧壁内表面上或侧壁之内的，且所述附壁铁箔环(4)是连续环或间断环。
  5. 根据权利要求4所述的颗粒段下游磁封式颗粒型烟支，其特征在于，所述纸筒(5)为整体式纸筒，所述附壁铁箔环(4)是在由纸材卷制纸筒前就粘附在纸材表面上或纸材内部并随纸材卷制成纸筒而预设在该纸筒上的。
  6. 根据权利要求1所述的颗粒段下游磁封式颗粒型烟支的制造方法，其特征在于，所述方法包括如下步骤：提供侧壁上已经预制有附壁铁箔环(4)的纸筒(5)，然后将其远唇端用封口膜(1)封口，然后将该纸筒(4)竖立并向其内填充均匀混合的烟草颗粒(2)和感受器颗粒(3)直至颗粒料位达到所述附壁铁箔环(4)附近，然后向纸筒(4)内填充条形磁铁屑前体并使之彼此堆叠架桥，然后用外磁场对该条形磁铁屑前体进行磁化而使之转化为条形磁铁屑，这些条形磁体屑彼此磁力相吸并与所述附壁铁箔环(4)磁力相吸，从而形成所述磁铁屑架桥层(9)，然后留出所述空腔段(7)，并在所述空腔段(7)下游填充所述过滤段(8)。
  7. 根据权利要求6所述的制造方法，其特征在于，所述纸筒(4)的对应于所述空腔段(7)的侧壁上还预设有通气孔(6)。
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