CN113966860A - 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 PDFInfo
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Abstract
本发明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)。本发明还公开了上述颗粒段下游磁封式颗粒型烟支的制造方法。
Description
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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