201225862 六、發明說明： 【發明所屬之技術領域】 - 本發明係關於一種具備碳熱源之吸煙物品，特別是關 ，於保持碳熱源之紙管。 【先前技術】 該種吸煙物品之一已知有揭露於專利文獻1之吸煙物 品。該專利文獻1之吸煙物品係具備：紙管，由金屬層及 紙層所構成，奴熱源’保持在該紙管内，且藉由點火而燃 燒；及香味產生源，與碳熱源鄰接而配置在前述紙管内， 且藉由接受碳熱源之燃燒熱而加熱，以放出杳味。 再者’專利文獻1之吸煙物品復具備玻璃氈（glass mat)。該玻璃氈係捲繞在碳熱源之外周面，且具有作為對 紙管隔熱之隔熱材的功能。因此，玻璃氈係抑制碳熱源之 燃燒熱通過紙管而散熱至紙管之外側。結果，碳熱源之燃 燒熱係有效地傳達至香味產生源，香味產生源係將其香味 有效地放出。 另一方面，專利文獻2所揭露之吸煙物品係包含：唇 狀之内層套筒，與碳熱源直接密接，以取代前述玻璃氈； 及外側套筒，配置在該内層套筒之外侧；在該外層套筒與 碳熱源之間確保預定之間隔。該種内層及外層套筒亦有效 地使碳熱源之燃燒熱傳達至香味產生源。 (先前技術文獻） (專利文獻） (專利文獻 1)W0 2007— 119678 A1 3 322674 201225862201225862 VI. Description of the Invention: [Technical Field of the Invention] - The present invention relates to a smoking article having a carbon heat source, particularly a paper tube for maintaining a carbon heat source. [Prior Art] One of the smoking articles is known to be a smoking article disclosed in Patent Document 1. The smoking article of Patent Document 1 includes a paper tube composed of a metal layer and a paper layer, a slave heat source 'held in the paper tube, and burned by ignition; and a flavor generating source disposed adjacent to the carbon heat source. The inside of the paper tube is heated by receiving the heat of combustion of the carbon heat source to release the astringency. Further, the smoking article of Patent Document 1 is provided with a glass mat. This glass felt is wound around the outer surface of the carbon heat source and has a function as a heat insulating material for heat insulating the paper tube. Therefore, the glass felt suppresses the heat of combustion of the carbon heat source from being radiated to the outside of the paper tube through the paper tube. As a result, the heat of combustion of the carbon heat source is effectively transmitted to the source of the flavor generation, and the flavor source is effective to release the flavor. On the other hand, the smoking article disclosed in Patent Document 2 includes: a lip-shaped inner sleeve which is directly in close contact with the carbon heat source to replace the glass mat; and an outer sleeve disposed on the outer side of the inner sleeve; A predetermined interval is ensured between the outer sleeve and the carbon heat source. The inner layer and the outer sleeve are also effective in conveying the heat of combustion of the carbon heat source to the source of the fragrance. (Previous Technical Literature) (Patent Literature) (Patent Document 1) W0 2007— 119678 A1 3 322674 201225862
(專利文獻 2)JP 2 —84165 A 【發明内容】 (發明所欲解決之課題） 在上述專利文獻1之吸煙物品之情形，由於玻璃氈係 捲繞在碳熱源之整個外周面，因此該種玻璃氈係使碳熱源 之點火性惡化。此外，玻璃氈之使用係不但會使吸煙物品 之零件件數增加’且對於吸煙物品之製造會附加地要求玻 璃鼓之捲繞步驟，因而使吸煙物品之製造成本增加。 再者’在上述專利文獻2之吸煙物品之情形，内層及 外層套筒雖與碳熱源皆配置在由捲紙所構成之紙管内，但 該種構造係使吸煙物品之構造變得複雜。因此，專利文獻 2之吸煙物品的製造困難，且其生產性不佳。 本發明之目的在於提供一種可有效地將碳熱源之燃 燒熱傳導至香味產生源且可謀求零件件數之減少及生產性 之提升之具備碳熱源的吸煙物品。 (解決課題之手段） 為了要達成上述目的，本發明之具備碳熱源之吸煙物 品係具備：紙管，係為構成多層之管構造的紙管，各管係 由13至：>、各層之金屬層及紙層之積層薄片所形成；碳 熱源’係為保持在紙管之前端部之可燃燒的碳熱源，其具 有通氣性，且其外周面之至少一部分係直接密接在紙管之 内周壁；及香味產生源，係為配置在紙管内且從碳熱源朝 紙管之基端延伸於紙管内之具通氣性的香味產生源，接受 碳熱源之燃燒熱而放出香味；紙管係復具備配置在彼此鄰 322674 4 201225862 接之至少1組之管間，且至少圍繞碳熱源之隔熱層，該隔 熱層係藉由分佈在管間之氣袋所形成。 _ 紙管係包含隔熱層，該隔熱層係發揮高度之隔熱效 t 果，且抑制碳熱源之燃燒熱逸散至紙管外。因此，香味產 生源係藉由碳熱源之燃燒熱而有效率地被加熱。因此，從 香味產生源良好地放出其香味，使用者可品嚐其香味。 此外，隔熱層係除了上述之隔熱功能以外，將碳熱源 確實地保持在紙管，且對紙管之直徑方向賦予用以緩和施 加於紙管之來自外部之力的彈性力。因此，紙管係可在不 會造成碳熱源之脫落的情形下，藉由該彈性力確實地保持 碳熱源。再者，即便在使用者將具備比較容易破裂之碳熱 源的吸煙物品掉落時，紙管亦可藉由該彈性力防止碳熱源 之破損。 詳細而言，一組積層薄片中之一方的積層薄片係具有在 與另一方的積層薄片之間形成隔熱層的壓紋面。因此，吸煙 物品之製造係不會要求玻璃氈等隔熱材或相對於碳熱源之 隔熱層的捲繞步驟，因而可容易且廉價地製造吸煙物品。 具體而言，紙管係包含：内管，形成紙管之内周面； 外管，形成紙管之外周面；及中管，配置在内管與外管之間。 較佳為，隔熱層係分別配置在内管與中管之間、及中 管與外管之間。 隔熱層亦可分別配置在碳熱源與内管之間、及内管與 中管之間。 此外，隔熱層較佳為從紙管之前端延伸至基端。此 5 322674 201225862 時，隔熱層係對於紙管之軸線方向遍及整個紙管而延伸， 因此抑制紙管之整個外表面的溫度上昇。 此外’香味產生源較佳為鄰接碳熱源而配置。 再者’吸煙物品復可包含透過外層紙（tip paper)連 接在紙管之基端的渡嘴。 (發明之效果） 依據本發明之具備碳熱源之吸煙物品，由於紙管具有 隔熱層，因此可有效率地將碳熱源之燃燒熱傳達至香味產 生源’且可容易且廉價地製造。 【實施方式】 參照第1圖，第1實施例之吸煙物品1係具備煙草棒 2。該煙草棒2係包含中空圓筒狀之紙管2〇，在該紙管2〇 之内部配置有圓柱狀之碳熱源4及香味產生源6❶該等碳 熱源4及香味產生源6係分別具有通氣性。 詳細言之’碳熱源4係具有複數個軸方向孔（未圖示）， 該等軸方向孔係貫通碳熱源4而形成。因此，碳熱源4係 比較容易破裂。碳熱源4係配置在紙管20之一方端部内 即前端部内，在與紙管20之内周壁密接之狀態下被保持。 亦即，碳熱源4之外徑係與紙管20之内徑大致相等。此外， 在本實施例之情形，碳熱源4之前端部係從紙管2〇之前端 部突出。因此，使用者係藉由在碳熱源2〇之突出端點火， 而可容易地使碳熱源20燃燒。 另一方面，香味產生源6係在與碳熱源4接觸之狀熊 下在紙管20之長度方向排列配置。亦即，香味產生源 322674 6 201225862 係定位在紙管20之基端側、即吸口側。香味產生源6係在 接受碳熱源4之燃燒熱而被加熱時，放出其香味。具體而 言，香味產生源6係為了確保預定之通氣性而由填充在紙 e 20内之煙草絲所形成，煙草絲係例如將煙草葉予以裁切 而得者。 刚述紙管20係形成多層之管構造，各管係由螺旋形 之積層薄片所形成，並透過接著劑彼此地貼合。詳細而言， 如第2圖所示，紙管20係包含3層之管22，形成各管22 之積層片係分別包含至少各1層之鋁層26及紙層24。 具體而g，内管22i係包含各1層之鋁層26及紙層 24 ’在此之鋁層26係包圍紙層24之外侧。因此，内管22i 之鋁層26係形成紙管20之内周面，且與碳熱源4及香味 產生源6直接接觸。 此外’中管22m及外管22〇係分別包含2層紙層24 及1層紹層26’各鋁層26係分別被夾持在紙層24。因此， 當内管22i、中管22m及外管22〇貼合時，管22i、22m、 22〇中’與紙管2〇之直徑方向鄰接之管係分別以該等紙層 24彼此貼合。因此，各管22i、22m、22〇係彼此穩固地結 合’而提供一種穩固之紙管2〇。 再者’中管22m亦可由施有壓紋加工之積層片所形成。 詳細言之’在中管22m之内周面，以規則或不規則之方式 分佈有多數個凸部32,另一方面，在該中管22m之外周面， 分佈有對應凸部32之多數個凹部。因此，在此情形下當中 管22m形成在内管22i之外周面上時，中管22m係以該凸 7 322674 201225862 部32與内管22i之外周面接觸。亦印，内管奶盘中管 22m係局部地接觸。結果’在内管22i與中管22m之間， 鄰接之凸部32係與内管22i之外周面共同作用而劃設為氣 袋34，該耽袋34係分佈在中管22m之整個内周面。同樣 地’當在中管22R外周面上形成有外管22〇日夺由於中 管22m與外管22〇係局部地接觸，因此在中管心與 22〇之間分佈有對應前述凹部之氣f 、 轧敕36。亦即，在紙管20 内之中管心的内外，配置有在紙f2()之周方向且於轴線 方向間歇性連續之氣袋34、36，該等氣袋％、36係實質 2 =熱層30形成在中管22„之内外，該等隔熱層_ 由心34或36所構成，且從紙管2〇之前端延伸至基端。 :外储草棒2之基端，透過外層紙18連接有棒狀 之滤嘴1〇。該據嘴10係以包材14包入遽嘴纖維12而形 成。在此之遽材1G可為在其内部包含活性炭之炭滤嘴，亦 可為組合有普通據嘴（plainfilter)與炭滤嘴之串列滤嘴。 因此，當碳熱源4點火，且使用者以吸煙物品丨之吸 口（即'慮嘴1G)抽吸吸煙物品1時，碳熱源4之燃燒熱會藉 由使用者之抽吸而對流通於碳熱源4内之軸方向孔内之空 氣進行加熱。該加熱空氣係復通過香味產生源6，經由吸 煙物。σ 1之吸口而被吸入至使用者之口腔内。此時，香味 產生源6係被加熱空氣所加熱，煙草絲之香味（即煙草絲之 香未成分）會玫出至加熱空氣中。結果，使用者可品嚐煙草 絲之香味。 然而，由於前述隔熱層30係發揮隔熱效果，因此從 322674 8 201225862 碳熱源4傳達至紙管20之燃燒熱會被抑制’燃燒熱係可有 效地對通過碳熱源4之空氣進行加熱’亦即有效地加熱香 味產生源6。 ，本發明並不限定在上述第1實施例之吸煙物品’可進 行各種之變更。 例如，第3圖所示之第2實施例之吸煙物品1係在内 管20i進行壓紋加工’且僅在内管i之外侧具有隔熱層 30。即使為該種隔熱層30 ’亦能發揮充分之隔熱效果° 第4圖係顯示第3實施例’該第3實施例之吸煙物品 係相當於將空洞40附加在第1或第2實施例之吸煙物品。 詳細而言，該空洞40係在紙管20内確保於碳熱源4與香 味產生源6之間。 為了驗證上述實施例之吸煙物品所具有之隔熱層30 的隔熱效果，係分別準備各10支之第3實施例之形式所屬 之實例1、2的吸煙物品、無隔熱層之比較例1的吸煙物品、 及取代隔熱層而具有玻璃氈之比較例2的吸煙物品。 詳細而言，實例1之紙管、壓紋加工及碳熱源之規格 係如下所述。 紙管 長度：30顏、内徑：6.4mm、紙層之厚度：2〇/zm、各鋁層 之厚度· 20/zm、隔熱層：存在於中管22m的内外 墨纹加工 壓紋形狀：剖面觀看為圓弧狀波、深度：〇 6mm 碳熱源 9 322674 201225862 長度：10mm(突出長度5mm) 關於實例2之紙管、壓紋加工及碳熱源之規格’係對 形成内管22i之積層薄片進行壓紋加工，此時，在内管22i 與中管22m之間及内管22i與碳熱源4之間存在有隔熱層 30的點，係與實例1之情形不同。 關於比較例1之紙管及碳熱源，只有紙管未具有隔熱 層30之點，與實例1、2之情形不同。 關於比較例2之紙管及碳熱源，只有紙管之内徑為 6. 7mm、且在碳熱源捲繞有玻璃氈之點，與實例1、2之情 形不同。 此外，關於實例1、2及比較例1、2之吸煙物品，其 他規格皆相同。 為了驗證上述隔熱效果，對於實例及比較例之吸煙物 品’依據加拿大吸煙條件（CIR條件）實施吸煙試驗，藉由 放射溫度計在距紙管之前端達15_之位置測量紙管之外 周面的最高溫度，並求出實例及比較例之各個最高溫度的 平均值。 以下之表1係顯示測量結果。 【表1】 實例1 實例2 比較例1 比較例2 紙管之規格 在中管之内外 具有隔熱層 在内管之内外 具有隔熱層 無隔熱層 具有玻璃氈 平均最高溫 度rc] 97.98 99. 54 118. 56 104.25 如表1所示’比較例1之紙管之外表面的平均最高溫 322674 10 201225862 度為11。8.阶，相對於此，錄例2之平均最高溫度為 104.251。由此，捲繞在碳熱源之坡_係降低紙管之外 周面之平均最高溫度，而發揮隔熱效果。 另—方面’實例1及實例2之紙管2〇之外表面的平 均最高溫度為97.98。(：、99.54t。該等之平均最高溫度皆 係比比較例2之平均最高溫度刚.阶還低。由此得知， 形成在紙管20内之隔熱層3〇係發揮較比較例2之玻賴 更佳之隔熱效果。此外’若比較實例1、2之平均最高溫度， 則實例1之隔熱層的隔熱效果係比實例2之隔熱層之情形 更佳。 如此’紙管20之隔熱層3〇係發揮高度隔熱效果，且 t制碳熱源4之燃賴逸出至紙管20外。因此，藉由碳熱 ^ 4之燃燒熱’香味產生源6係有效地被加熱。因此，從 味產生源6將其香味良好地放出，使用者即可品嘴其香 隔熱層30係只要對形成中管22m或内管22ι之積層 涛片施予壓紋加工而得者。 制、4 2丄 因此，實例1、2之吸煙物品的 裝w並未要求玻璃氈等之隐 ^熱材或隔熱材的對碳熱源4之 捲繞步驟，而可容易且廉僧 ία ^地製造實例1、2之吸煙物品。 此外’隔熱紙30係對^^ 紙普♦敫加r·丄 於紙管20之軸線方向’延伸於 紙s 20之整個區域，因此 度上昇。 卩制煙草棒2之整體外表面的溫 隔熱層30係除了上迷 膏妯仅姓—从泣ηΛ Ν熱功能以外’將碳熱源4確 貫地保持在紙管20，且_纟 20之直徑方向賦予用以緩 11 322674 201225862 和施加於紙管20之來自外部的彈性力。為了驗證該種紙管 20之彈性力，係重新準備各5支之實例1、2之紙管20、 及比較例1之紙管。 此外，對於實例1、2及比較例1之紙管，實施用以 確認在紙管發生破裂或壓曲之針規（pin gauge)之直徑的 試驗。具體而言，首先從紙管之前端開口將直徑6. 4mm之 針規插入至紙管達5mm。藉由在此之插入，若在紙管未發 生破裂或壓曲，則一面更換為直徑比前一次之針規更大之 針規，一面反覆進行上述針規之插入直到發生破裂或壓曲 為止。在此，前一次之針規的直徑與這次之針規的直徑之 間的差為0. 01 mm。 以下之表2係顯示前述之確認試驗的結果，亦即顯示 在比較例1、實例1、2之紙管發生破裂或壓曲之針規的平 均最大直徑（即紙管之容許最大内經）。 【表2】 比較例1之紙管 實例1之紙管 實例2之紙管 容許最大内徑[mm] 6.55 6.65 6.67 如表2所示，比較例1之紙管的容許最大内徑為6. 5 5mm， 相對於此，實例1、2之紙管的容許最大内徑係分別為 6. 65mm及6. 67mm。由此確認，與比較例1之紙管相比較， 實例1、2之紙管20係在其直徑方向具有更大之彈性。這 是意指：只要將比實例1、2之紙管20的内徑（6. 40mm)更 大之外徑的碳熱源4壓入紙管20内，紙管20即可在不會 12 322674 201225862 導致碳熱源4之脫落的情形下，藉由該彈性力確實地保持 碳熱源4。此外，即便使用者將具有比較容易破裂之碳熱 源4的吸煙物品1掉落時，紙管20亦可藉由該彈性力防止 碳熱源4之破損。 本發明並非限定在上述之一實施例者，可進行各種之 變形。 例如，隔熱層30亦可藉由對形成紙管20之外管22〇 之積層薄片施予壓紋加工，而形成在中管22m與外管22〇 之間。 此外，隔熱層30亦可配置在紙管20之軸線方向的一 部分，亦可配置在其全域。 再者，形成隔熱層30之氣袋34、36之形狀、亦即形 成在積層薄片之壓紋並不限定在圖示之例，亦可具有三角 波、梯形波等之剖面液狀，且其俯視之形狀亦為任意者。 此外，紙管20内之鋁層26係可替換成由熱傳導率低 之其他金屬所構成之金屬層。 再者，紙管20亦可具有包含4層以上之管的多層構 造。 此外，如第5圖所示，碳熱源4係可具有與紙管20 之前端面齊平之端面。此時，不會有直接對碳熱源4施加 來自外部之力，而可更進一步防止碳熱源4從紙管20之脫 落，並且使吸煙物品1之外觀性提升。此外，紙管20係圍 繞碳熱源4之整個外周面，因此即便使用者將吸煙物品1 掉落時，亦可更確實地防止碳熱源4之破損。 13 322674 201225862 此外，香味產生源係除了前述煙草絲以外’只要是接 受來自碳熱源4之職熱而放出香味者即可。 【圖式簡單說明】 第1圖係本發明第1實施例之具備碳熱源之吸煙物品 的剖視圖。 第2 圖係顯示第1 圖之部位A之紙管的剖視圖。 第3 圖係顯示本發明第2實施例之具備碳熱源之吸煙 物品的*— 部分之放大剖視圖。 第4 圖係本發明第3實施例之具備碳熱源之吸煙物品 的剖視圖 0 第5 圖係本發明第 4實施例之具備碳熱源之吸煙物品 的剖視圖 〇 【主要元件符號說明】 1 吸煙物品 2 煙草棒 4 碳熱源 6 香味產生源 10 濾嘴 12 濾嘴纖維 14 包材 18 外層紙 20 紙管 22i 内管 22m 中管 22〇 外管 24 紙層 26 鋁層 30 隔熱層 32 凸部 34 > 36 氣袋 40 空洞 322674(Patent Document 2) JP 2 - 84165 A [Problem to be Solved by the Invention] In the case of the smoking article of Patent Document 1, since the glass felt is wound around the entire outer peripheral surface of the carbon heat source, the species The glass felt deteriorates the ignitability of the carbon heat source. Further, the use of the glass mat not only increases the number of parts of the smoking article, but additionally requires the winding step of the glass drum for the manufacture of the smoking article, thereby increasing the manufacturing cost of the smoking article. Further, in the case of the smoking article of Patent Document 2, the inner layer and the outer sleeve are disposed in a paper tube composed of a roll of paper, and the carbon heat source is complicated, but the structure of the smoking article is complicated. Therefore, the smoking article of Patent Document 2 is difficult to manufacture and its productivity is poor. It is an object of the present invention to provide a smoking article having a carbon heat source which can efficiently conduct the heat of combustion of a carbon heat source to a flavor generating source and can reduce the number of parts and improve productivity. (Means for Solving the Problem) In order to achieve the above object, a smoking article provided with a carbon heat source according to the present invention includes a paper tube which is a paper tube constituting a multi-layered tube structure, and each tube is composed of 13 to: > a laminated layer of a metal layer and a paper layer; the carbon heat source is a combustible carbon heat source held at the front end of the paper tube, which is ventilating, and at least a portion of the outer peripheral surface thereof is directly adhered to the paper tube a peripheral wall of the fragrance; and a source of aroma generated in the paper tube and extending from the carbon heat source toward the base end of the paper tube in the paper tube, receiving the combustion heat of the carbon heat source to release the fragrance; It has a heat insulation layer disposed between at least one group of tubes adjacent to each other 322674 4 201225862 and surrounding at least a carbon heat source, which is formed by air bags distributed between the tubes. _ The paper tube system contains a thermal insulation layer that exerts a high degree of thermal insulation effect and inhibits the combustion heat of the carbon heat source from escaping outside the paper tube. Therefore, the source of the flavor generation is efficiently heated by the heat of combustion of the carbon heat source. Therefore, the fragrance is well released from the source of the fragrance, and the user can taste the fragrance. Further, the heat insulating layer retains the carbon heat source in the paper tube in addition to the above-described heat insulating function, and imparts an elastic force to the outer diameter of the paper tube to alleviate the force applied from the outside of the paper tube. Therefore, the paper tube system can reliably maintain the carbon heat source by the elastic force without causing the carbon heat source to fall off. Further, even when the user drops a smoking article having a carbon heat source which is relatively easy to be broken, the paper tube can prevent the carbon heat source from being damaged by the elastic force. Specifically, one of the laminated sheets of one of the laminated sheets has an embossed surface which forms a heat insulating layer with the other laminated sheet. Therefore, the manufacture of the smoking article does not require a heat insulating material such as a glass mat or a winding step with respect to the heat insulating layer of the carbon heat source, so that the smoking article can be easily and inexpensively manufactured. Specifically, the paper tube system comprises: an inner tube forming an inner peripheral surface of the paper tube; an outer tube forming an outer peripheral surface of the paper tube; and a middle tube disposed between the inner tube and the outer tube. Preferably, the heat insulating layer is disposed between the inner tube and the middle tube and between the inner tube and the outer tube. The heat insulating layer may also be disposed between the carbon heat source and the inner tube and between the inner tube and the middle tube. Further, the heat insulating layer preferably extends from the front end to the base end of the paper tube. At 5 322674 201225862, the insulating layer extends over the entire paper tube for the axial direction of the paper tube, thereby suppressing the temperature rise of the entire outer surface of the paper tube. Further, the flavor generating source is preferably disposed adjacent to the carbon heat source. Further, the 'smoking article' may include a nozzle connected to the base end of the paper tube through a tip paper. (Effects of the Invention) According to the smoking article with a carbon heat source of the present invention, since the paper tube has a heat insulating layer, the heat of combustion of the carbon heat source can be efficiently transmitted to the flavor generating source' and can be easily and inexpensively manufactured. [Embodiment] Referring to Fig. 1, a smoking article 1 of the first embodiment is provided with a tobacco rod 2. The tobacco rod 2 includes a hollow cylindrical paper tube 2, and a cylindrical carbon heat source 4 and a flavor generating source 6 are disposed inside the paper tube 2, and the carbon heat source 4 and the flavor generating source 6 respectively have Ventilation. More specifically, the 'carbon heat source 4' has a plurality of axial direction holes (not shown) which are formed by passing through the carbon heat source 4. Therefore, the carbon heat source 4 is relatively easy to break. The carbon heat source 4 is disposed in the front end portion of one end portion of the paper tube 20, and is held in contact with the inner peripheral wall of the paper tube 20. That is, the outer diameter of the carbon heat source 4 is substantially equal to the inner diameter of the paper tube 20. Further, in the case of the present embodiment, the front end of the carbon heat source 4 protrudes from the front end of the paper tube 2〇. Therefore, the user can easily burn the carbon heat source 20 by igniting at the protruding end of the carbon heat source 2〇. On the other hand, the flavor generating source 6 is arranged side by side in the longitudinal direction of the paper tube 20 under the contact with the carbon heat source 4. That is, the flavor generating source 322674 6 201225862 is positioned on the proximal end side of the paper tube 20, that is, the suction side. The flavor generating source 6 releases the flavor when it is heated while receiving the heat of combustion of the carbon heat source 4. Specifically, the flavor generating source 6 is formed of tobacco yarn filled in the paper e 20 in order to secure a predetermined air permeability, and the tobacco yarn is obtained by, for example, cutting a tobacco leaf. Just as the paper tube 20 is formed into a multi-layered tube structure, each tube is formed of a spiral laminated sheet and adhered to each other through an adhesive. Specifically, as shown in Fig. 2, the paper tube 20 includes three layers of tubes 22, and the laminated sheets forming the respective tubes 22 each include at least one layer of the aluminum layer 26 and the paper layer 24. Specifically, the inner tube 22i includes one layer of the aluminum layer 26 and the paper layer 24'. The aluminum layer 26 here surrounds the outer side of the paper layer 24. Therefore, the aluminum layer 26 of the inner tube 22i forms the inner peripheral surface of the paper tube 20, and is in direct contact with the carbon heat source 4 and the flavor generating source 6. Further, the middle tube 22m and the outer tube 22 are respectively provided with two layers of paper 24 and one layer of layers 26', and each of the aluminum layers 26 is held by the paper layer 24, respectively. Therefore, when the inner tube 22i, the middle tube 22m, and the outer tube 22 are bonded together, the tubes adjacent to the diameter direction of the paper tube 2' in the tubes 22i, 22m, and 22 are attached to each other by the paper layers 24, respectively. . Therefore, the tubes 22i, 22m, 22 are firmly bonded to each other to provide a stable paper tube 2'. Further, the middle tube 22m may be formed of a laminated sheet subjected to embossing. Specifically, in the inner circumferential surface of the middle pipe 22m, a plurality of convex portions 32 are distributed in a regular or irregular manner, and on the other hand, a plurality of corresponding convex portions 32 are distributed on the outer circumferential surface of the middle pipe 22m. Concave. Therefore, in this case, when the intermediate tube 22m is formed on the outer peripheral surface of the inner tube 22i, the middle tube 22m is in contact with the outer peripheral surface of the inner tube 22i by the convex portion 322674201225862 portion 32. Also printed, the 22m of the inner tube of the inner tube is partially in contact. As a result, between the inner tube 22i and the middle tube 22m, the adjacent convex portion 32 cooperates with the outer peripheral surface of the inner tube 22i to be formed into an air bag 34, and the pocket 34 is distributed over the entire inner circumference of the middle tube 22m. surface. Similarly, when the outer tube 22 is formed on the outer circumferential surface of the middle tube 22R, since the middle tube 22m is in partial contact with the outer tube 22, a gas corresponding to the concave portion is distributed between the middle tube and the 22 〇. f, rolling 36. That is, in the inner and outer portions of the tube in the paper tube 20, air bags 34 and 36 which are intermittently continuous in the circumferential direction of the paper f2 () and in the axial direction are disposed, and the air bags % and 36 are substantially 2 The thermal layer 30 is formed inside and outside the middle tube 22, and the heat insulating layer is composed of the core 34 or 36 and extends from the front end of the paper tube 2 to the base end: the base end of the outer straw rod 2, A rod-shaped filter 1 is connected to the outer paper 18. The nozzle 10 is formed by wrapping the packet material 14 into the nozzle fiber 12. The coffin 1G may be a carbon filter containing activated carbon inside. It can also be a tandem filter combined with a plain filter and a carbon filter. Therefore, when the carbon heat source 4 is ignited, and the user sucks the smoking article with the mouthpiece of the smoking article (ie, 'the mouth 1G') At the time of the combustion heat of the carbon heat source 4, the air flowing through the axial direction holes in the carbon heat source 4 is heated by the user's suction. The heated air is passed through the fragrance generating source 6 via the smoking article. The mouthpiece of 1 is sucked into the mouth of the user. At this time, the flavor generating source 6 is heated by the heated air, and the flavor of the tobacco wire (ie, smoke) The silky fragrance is not added to the heated air. As a result, the user can taste the flavor of the tobacco silk. However, since the heat insulation layer 30 exerts a heat insulating effect, it is transmitted from the 322674 8 201225862 carbon heat source 4 to the paper. The heat of combustion of the tube 20 is suppressed. The 'combustion heat system can effectively heat the air passing through the carbon heat source 4', that is, the flavor generating source 6 is effectively heated. The present invention is not limited to the smoking article of the first embodiment described above. The various changes can be made. For example, the smoking article 1 of the second embodiment shown in Fig. 3 is embossed in the inner tube 20i and has only the heat insulating layer 30 on the outer side of the inner tube i. The heat insulating layer 30' can also exhibit sufficient heat insulating effect. Fig. 4 shows a third embodiment. The smoking article of the third embodiment corresponds to the addition of the cavity 40 to the smoking of the first or second embodiment. Specifically, the cavity 40 is secured between the carbon heat source 4 and the flavor generating source 6 in the paper tube 20. In order to verify the heat insulating effect of the heat insulating layer 30 of the smoking article of the above embodiment, Preparation of the third embodiment of each of the ten The smoking articles of Examples 1 and 2, the smoking articles of Comparative Example 1 without the heat insulating layer, and the smoking articles of Comparative Example 2 having the glass felt instead of the heat insulating layer. In detail, the paper tube of Example 1 The specifications of embossing and carbon heat source are as follows: Paper tube length: 30 colors, inner diameter: 6.4 mm, thickness of paper layer: 2 〇 / zm, thickness of each aluminum layer · 20 / zm, heat insulation layer: The inner and outer ink lines are embossed in the inner tube 22m: the circular shape is observed in the cross section, the depth is: 〇6mm, the carbon heat source is 9 322674 201225862, the length is 10mm (the protruding length is 5mm), the paper tube and embossing of the example 2 are The specification of the carbon heat source embosses the laminated sheet forming the inner tube 22i. At this time, the point where the heat insulating layer 30 exists between the inner tube 22i and the middle tube 22m and between the inner tube 22i and the carbon heat source 4 It is different from the case of Example 1. Regarding the paper tube and the carbon heat source of Comparative Example 1, only the point that the paper tube did not have the heat insulating layer 30 was different from the case of Examples 1 and 2. Regarding the paper tube and the carbon heat source of Comparative Example 2, only the inner diameter of the paper tube was 6.7 mm, and the point at which the carbon heat source was wound with the glass felt was different from that of Examples 1 and 2. Further, regarding the smoking articles of Examples 1, 2 and Comparative Examples 1, 2, the other specifications were the same. In order to verify the above-mentioned heat insulation effect, the smoking articles of the examples and comparative examples were subjected to a smoking test according to Canadian smoking conditions (CIR conditions), and the outer circumference of the paper tube was measured by a radiation thermometer at a position 15 Å from the front end of the paper tube. The maximum temperature was obtained, and the average value of each of the highest temperatures of the examples and comparative examples was determined. Table 1 below shows the measurement results. [Table 1] Example 1 Example 2 Comparative Example 1 Comparative Example 2 The specification of the paper tube has a heat insulating layer inside and outside the middle tube. There is a heat insulating layer inside and outside the inner tube. No insulating layer has an average maximum temperature of glass felt rc] 97.98 99 54 118. 56 104.25 As shown in Table 1, the average maximum temperature of the outer surface of the paper tube of Comparative Example 1 is 322674 10 201225862 degrees is 11.8. In contrast, the average maximum temperature of Record 2 is 104.251. As a result, the slope of the carbon heat source is reduced to lower the average maximum temperature of the outer surface of the paper tube, thereby exerting a heat insulating effect. On the other hand, the average outer surface temperature of the outer surface of the paper tube 2 of Example 1 and Example 2 was 97.98. (:, 99.54t. The average maximum temperature of these is lower than the average maximum temperature of the comparative example 2. It is understood that the thermal insulation layer 3 formed in the paper tube 20 is a comparative example. 2, the better thermal insulation effect of the glass. In addition, if the average maximum temperature of the examples 1, 2 is compared, the insulation effect of the insulation layer of the example 1 is better than that of the insulation layer of the example 2. The heat insulating layer 3 of the tube 20 exerts a high heat insulating effect, and the combustion of the t-carbon heat source 4 escapes to the outside of the paper tube 20. Therefore, the combustion heat source of the carbon heat is effective. The ground is heated. Therefore, the flavor is well discharged from the taste generating source 6, and the user can pour the scented heat insulating layer 30 by applying embossing to the laminated sheet of the intermediate tube 22m or the inner tube 22i. Therefore, the system of the smoking articles of the examples 1 and 2 does not require the winding step of the carbon heat source 4 such as the glass mat or the heat insulating material, and can be easily and僧 僧 α 僧 地 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 制造 僧 制造 僧 僧 僧 僧 僧 僧 僧 僧 僧 僧 僧 僧 僧 僧 僧The 'extends to the entire area of the paper s 20, so the degree rises. The warm insulating layer 30 of the outer surface of the tobacco rod 2 is not only the top name but also the surname - from the weeping Λ Ν heat function 4 is surely held in the paper tube 20, and the diameter direction of _纟20 is given to the elastic force from the outside for the application of the 322674 201225862 and the paper tube 20. In order to verify the elastic force of the paper tube 20, Paper tubes 20 of Examples 1 and 2, and paper tubes of Comparative Example 1 were prepared. Further, the paper tubes of Examples 1, 2 and Comparative Example 1 were subjected to confirmation of cracking or buckling in the paper tube. The test of the diameter of the pin gauge. Specifically, first insert a needle of 6.4 mm in diameter from the front end of the paper tube into the paper tube up to 5 mm. By inserting here, if the paper tube does not occur If the rupture or buckling is carried out, the needle gauge with a larger diameter than the previous needle gauge is replaced, and the needle gauge is inserted repeatedly until the rupture or buckling occurs. Here, the diameter of the previous needle gauge and this time The difference between the diameters of the needle gauges is 0.01 mm. Table 2 below The results of the above-mentioned confirmation test, that is, the average maximum diameter of the needle gauge which is broken or bucked in the paper tube of Comparative Example 1, Example 1, 2 (i.e., the maximum allowable internal diameter of the paper tube) is shown. The paper tube of Example 1 is the maximum allowable inner diameter of the paper tube of Example 1 of the paper tube of Example 1 of the paper tube of Example 1. [6] 6.55 6.65 6.67 As shown in Table 2, the maximum allowable inner diameter of the paper tube of Comparative Example 1 is 6. 5 5 mm, relative Here, the allowable maximum inner diameters of the paper tubes of Examples 1 and 2 were 6.65 mm and 6.67 mm, respectively, thereby confirming that the paper tubes 20 of Examples 1 and 2 were compared with the paper tubes of Comparative Example 1. Its diameter direction has greater elasticity. This means that as long as the carbon heat source 4 having an outer diameter larger than the inner diameter (6.40 mm) of the paper tube 20 of Examples 1 and 2 is pressed into the paper tube 20, the paper tube 20 can be no longer 12 322674 201225862 In the case where the carbon heat source 4 is detached, the carbon heat source 4 is surely held by the elastic force. Further, even if the user drops the smoking article 1 having the carbon heat source 4 which is relatively easily broken, the paper tube 20 can prevent the carbon heat source 4 from being broken by the elastic force. The present invention is not limited to the above embodiments, and various modifications can be made. For example, the heat insulating layer 30 may be formed between the middle tube 22m and the outer tube 22'' by embossing the laminated sheet forming the tube 22's outside the paper tube 20. Further, the heat insulating layer 30 may be disposed in a part of the axial direction of the paper tube 20, or may be disposed in the entire area. Further, the shape of the air pockets 34 and 36 forming the heat insulating layer 30, that is, the embossing formed on the laminated sheet is not limited to the illustrated example, and may have a cross-sectional liquid shape such as a triangular wave or a trapezoidal wave, and The shape of the top view is also any. Further, the aluminum layer 26 in the paper tube 20 can be replaced with a metal layer composed of other metals having a low thermal conductivity. Further, the paper tube 20 may have a multilayer structure including four or more tubes. Further, as shown in Fig. 5, the carbon heat source 4 may have an end face that is flush with the front end surface of the paper tube 20. At this time, there is no direct application of force from the outside to the carbon heat source 4, and the removal of the carbon heat source 4 from the paper tube 20 can be further prevented, and the appearance of the smoking article 1 can be improved. Further, since the paper tube 20 surrounds the entire outer peripheral surface of the carbon heat source 4, even if the user drops the smoking article 1, the damage of the carbon heat source 4 can be more reliably prevented. 13 322674 201225862 Further, the source of the flavor generation may be in addition to the tobacco yarn described above, as long as it is subjected to heat from the carbon heat source 4 to emit flavor. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a smoking article having a carbon heat source according to a first embodiment of the present invention. Fig. 2 is a cross-sectional view showing the paper tube of the portion A of Fig. 1. Fig. 3 is an enlarged cross-sectional view showing a portion of a smoking article having a carbon heat source according to a second embodiment of the present invention. 4 is a cross-sectional view of a smoking article having a carbon heat source according to a third embodiment of the present invention. FIG. 5 is a cross-sectional view showing a smoking article having a carbon heat source according to a fourth embodiment of the present invention. [Description of main components] 1 smoking article 2 Tobacco rod 4 Carbon heat source 6 Fragrance source 10 Filter 12 Filter fiber 14 Pack material 18 Outer paper 20 Paper tube 22i Inner tube 22m Middle tube 22 Outer tube 24 Paper layer 26 Aluminum layer 30 Insulation layer 32 Convex 34 > ; 36 air bag 40 cavity 322674