201143642 六、發明說明： 【發明所屬之技術領域】 本發明係有關吸煙製品以及用於吸煙製品之濾嘴，以 改善裝有碳濾嘴之吸煙製品的感覺變量曲線。 【先前技術】 吸煙製品（特別是香煙）通常包括一由捲菸紙所包圍之 碎片菸草條（通常是截止過濾器（cut filter)形式）及一以端 對端關係與該菸草條對準之圓柱形濾嘴。該菸草條通常具 有約7至約1 0毫米間之直徑及約6 0毫米至約1 2 5毫米間 之長度。 通常，該濾嘴包括一以煙嘴紙（tipping paper)附著至該 菸草條之醋酸纖維素絲束塡料。以沿著該濾嘴之某一位置 附近的一列或多列穿孔可達成主流煙之流通。此外，可將 活性碳加入該濾嘴，以從煙移除許多氣相成分。不幸地， 美國吸煙者察覺到對碳濾嘴香煙之感受欠缺。 【發明內容】 期望吸煙製品在開始抽一 口煙或抽數口煙期間提供可 接受的味道，以及之後，經由一碳質及/或高通風濾嘴導引 該主流煙。此外’期望該濾嘴實現對於揮發性有機化合 (VOC)之較平坦變量曲線（flatter profile)，及接著實現對該 濾嘴之碳質及/或高通風濾嘴部分的初始旁流之更平衡感 -5- 201143642 依據一實施例’一種用於一吸煙製品之濾嘴包括：〜 上游部分’其包括一碳濾嘴：以及一中空管狀構件，其同 心地位於該碳濾嘴內且在該中空管狀構件之外圓周上具有 —個或多個孔，以允許主流煙在最早抽數口煙期間繞過該 碳濾嘴’以及在最初抽一口煙或抽數口煙後，主流煙經由 該碳濾嘴被吸出；以及一過濾材料下游部分。 依據另一實施例，一種吸煙製品包括：一可吸煙材料 薛草條；以及一濾嘴，附著至該可吸煙材料菸草條。該濾 嘴包括：一活性碳材料上游部分，其中該上游部分包括_ 同心地位於該活性碳材料內之中空管狀構件，以及其中該 中空管狀構件在其外圓周上具有一個或多個孔，以允許主 流煙在最早抽數口煙期間繞過該活性碳材料；一過濾材料 下游部分；以及一空腔，其位於該上游部分與該下游部分 間’其中該中空管狀構件在該吸煙製品上之最初抽一口煙 或抽數口煙期間，具有比該活性碳材料低的抗吸性，以及 其中在最初抽一口煙或抽數口煙後，主流煙經由該活性碳 材料被吸出。 【實施方式】 第1圖以香煙形式顯示一吸煙製品10之立體圖，其依 據—實施例由~菸草條20及一濾嘴30所構成。該濾嘴3〇 包括一上游部分32、一下游部分36及一位於該上游部分 32與該下游部分36間之開放空腔34。依據一實施例，該 上游部分32係一具有一同心地位於其內之通道4〇的碳濾 E1 -6- 201143642 嘴50°依據一實施例’該通道40係由一在其外圓周46上 具有一個或多個孔44之中空管狀構件42(亦即，一旁通管） 所構成。較佳的是’在使用中，該通道40具有比該碳濾嘴 低的抗吸性，以致於因最初抽數口煙（亦即，抽第第 二、第三口煙等）所產生之主流煙繞過該碳濾嘴50。該通道 40在吸煙開始時傳送至少實質部分尙未接觸任何碳質材料 之主流煙，及因而沒有通常與一碳濾嘴香煙相關之感受欠 缺。在·一吸煙製品10.上之最初抽數口煙後，該等孔44阻 塞或受阻，以致於因隨後抽數口煙所造成之煙經由該包含 一碳質材料或任意其它濾嘴吸收體或催化材料之碳濾嘴50 引出。 如第1圖所示，在一外接外捲煙材料24中包含可吸煙 材料22。該外捲煙材料24通常是一多孔捲煙材料或捲煙 紙。該條20通常稱爲「菸草條」及具有一點煙端或上游端 (未顯示）及一下游端或頂端14。該可吸煙材料22較佳的是 一碎片菸草或菸草截止過濾器。然而，可使用任何合適可 吸煙材料22。 該濾嘴30係相鄰於該菸草條20之頂端1 4，以致於該 濾嘴3 0與該菸草條20在軸向上以端對端關係對準’較佳 的是彼此鄰接。該濾嘴30具有一般圓柱形形狀，以及它的 直徑係實質相等於該菸草條20之直徑。該濾嘴30之端部 (亦即’上游端16及下游端18(亦即，或口端））係開放的’ 供空氣及煙通過。 201143642 依據一實施例，該濾嘴30包括一由該碳濾嘴50及一 與該碳濾嘴50同中心之中空管狀構件42所構成之上游部 分32、一下游（或口端）部分36以及—位於該上游部分32 與該下游部分36間之空腔34。該碳濾嘴50較佳的是由一 混合有一醋酸纖維素材料或碳纖維束（carb〇il on tow, COT) 部分5 2之活性碳材料所構成。在另一情況中，該碳濾嘴 5〇可以是捲曲碳紙、碳單石或塡充有粒狀或珠狀碳或其它 合適碳材料或其組合之空腔。 較佳的是，一塡料捲紙26外接該濾嘴3 0(包括該上游 部分32、該空腔34及該下游部分36)之整個長度。依據一 實施例’該塡料捲紙26係一張紙，該張紙任選地包含一碳 質材料。該濾嘴30藉由一煙嘴紙（tipping paper)28附著至 該吸煙條20’該煙嘴紙28外接該濾嘴3〇之整個長度及該 吸煙條2 0之相鄰區域。該煙嘴紙2 8通常是一像紙之產品， 可使用任何合適材料。 依據一實施例’如第1圖所示，該通道40較佳的是由 —中空管狀構件42所構成，其中該中空管狀構件42在其 外圓周46上具有與該空腔34流通相通之—個或多個孔 44’及在該中空管狀構件42之下游端64上具有一不滲透 塡料48。依據一實施例，該中空管狀構件42之下游端64 較佳的是鄰接該濾嘴30之下游部分36。在另—情況中， 該中空管狀構件42之下游端64可位於該空腔34中或位於 該上游部分32之一下游端56上（第3圖）。在上游端62上， 201143642 該管狀構件42任選地延伸至該吸煙條2〇中或鄰接該吸煙 條2 0之頂端1 4。 該中空管狀構件42依該濾嘴3〇在軸上及徑向上之期 望滲透率及/或抗吸性（resistance to draw, RTD)而定，可以 由一不滲透材料及/或一可滲透材料所構成。依據一實施 例，該中空管狀構件42可以是中空紙管或中空塑膠管。在 另一實施例中，該中空管狀構件42可塡充有適合於其受控 滲透率及/或受控抗吸性（RTD)之材料。 依據一較佳實施例，該碳濾嘴50係一具有約22mm長 之碳纖維束部分52’其包圍一具有約25 mm長之管狀構件 42。由於該碳濾嘴50與該中空管狀構件42間之不同長度， 該中空管狀構件42延伸至位於該上游部分32與該下游部 分36間之空腔34中。 較佳的是，該中空管狀構件42之下游端64延伸超過 該濾嘴30之碳濾嘴50的下游端56約1至5mm，更佳的是 約2至3mm。如第1圖所示，該等孔44位於該中空管狀構 件42靠近該密封端48之外圓周46上。較佳的是，該等孔 44包括至少一圓周列之至少兩個開口或孔44。依據一實施 例，該至少一列之孔4 4較佳地位於該密封端4 8之外圓周 46及依該等開口或孔44之尺寸而定’具有2至6之數目。 依據一實施例，該等孔44較佳地具有約〇.5mm或更小之 直徑。 [S] -9- 201143642 該濾嘴3〇之下游部分36(亦即，口端）較佳地是由過濾 材料（例如’澱粉基聚丙烯或塑化醋酸纖維素絲束）所構 成。該下游部分36之過濾材料亦可具有收集網（gathered web)(例如’聚丙烯網、聚酯網、纖維素網或澱粉基網）之 形式。 在最初抽一 口煙或抽數口煙期間，煙因該同心中空管 或通道4 0之低抗吸性而經由該同心中空管或通道4 〇吸 出。因此，隨後在該吸煙製品10上抽數口煙前，該管狀構 件42(構成該通道40)之孔44部分或全部被阻塞，以致於 主流煙不再優先通過該管狀構件42，取而代之，主流煙經 由該碳濾嘴50之長度被吸出。 依據一實施例’該通道40具有比該碳濾嘴50低之抗 吸性（RTD)’以允許主流煙之一部分通過該中空管狀構件 42而不與該碳濾嘴50中之碳質材料接觸。當微粒物質經 由在該中空管狀構件42之密封端46上的孔44被吸出時， 該等孔44變成被該等微粒物質及焦油所阻塞，以防止進一 步旁通，以及然後，經由該碳濾嘴50過濾主流煙之全部。 可察覺到，該通道40及該碳濾嘴50之抗吸性（rtd) 及流量分佈可依數個因素（包括該濾嘴30之長度以及在該 碳濾嘴5 0及該下游部分3 6中之過濾材料的性質或型態）而 定。在另一情況中，可根據該碳濾嘴50之碳質材料的數量 及活性改變及/或控制該濾嘴之抗吸性（RTD)及流量分佈。 201143642 如第2圖所示’該濾嘴30包括一通道40，該通道40 同性且同軸地位於該碳濾嘴50中。該通道40較佳地從該 濾嘴30之上游端16延伸至該下游部分36之上游端58及 鄰接該濾嘴30之下游部分36。該通道40較佳地是由一中 空管狀構件42所構成，其中該中空管狀構件42在該外圓 周46上具有複數個或一連串孔44及在該中空管狀構件42 之下游端上具有一不滲透塡料48。依據一實施例，該中空 管狀構件42在其外圓周46上包括一連串之孔44,其延伸 於該管狀件42之長度。該一連串之開口或孔44較佳的是 沿著該管狀構件42之長度包括至少兩個圓周列之至少兩 個開口或孔4 4。 如第3圖所示，該中空管狀構件42在其圓周上包括一 連串之一個或多個開口或孔44，其延伸該管狀構件42之 長度。依據一實施例，該管狀構件42從該碳濾嘴50之一 上游端54延伸至該碳濾嘴50之下游端56。在該管狀構件 42之下游端上的該不滲透塡料48較佳地相鄰於該空腔34 或任選地位於該空腔3 4中。較佳的是，該複數個開口或孔 4 4沿著該管狀構件4 2之長度包括至少兩個圓周列之至少 兩個開口或孔44。依據一實施例，在該管狀構件42之下 游端上的該不滲透塡料4 8包括一旁通開口或孔.6 6..。較佳 的是’該旁通開口或孔66係在中心地位於該不滲透塡料 48中及具有約0.5mm或更小之外徑。較佳的是，該不滲透 塡料48係一熱熔黏膠塡料或其它合適塡料。依據一實施 I S1 201143642 例，較佳的是，該旁通開口或孔66穿入該不滲透塡料48 及允許在該下游部分36(或醋酸纖維素（Cellulose Acetate， CA)煙嘴）處之焦油阻塞。 第4A及4B圖顯示一吸煙製品之一未阻塞孔及在聯邦 貿易委員會（FTC)先行條件（35立方公分、2秒持續期間， 正弦波形）下，於吸煙機器上吸該吸煙製品後，被第4A圖 之吸煙製品的焦油所阻塞之孔的影像。使用如第2圖所示 之具有約22mm長之碳纖維束部分（COT)的濾嘴獲得如第 4A及4B圖所示之結果。 第5、7、9及1 2圖係顯示依據各種濾嘴組態之乙醛排 放對抽煙總口數的曲線圖。第6、8、10及13圖係顯示依 據各種濾嘴組態之異戊二烯排放對抽煙總口數的曲線圖。 如第5-10及12-13圖所示，特別是在早先抽數口煙中的較 高揮發性有機化合物（VOC)排出量及具有4個孔之醋酸纖 維素（CA)/碳纖維束（COT)105mg定製濾嘴的較平坦變量曲 線暗示碳旁通（car bon bypass)正在發生及最初碳旁通可以 改善在後面抽數口煙時之移除速率。第9及10圖顯示具有 旁通管之l〇5mg碳纖維束（COT)設計的濾嘴在最早抽數口 煙時具有相同於60mg COT控制（無管）之乙醛排出量。然 而當抽煙總口數增加時，排出量偏離。 第5及6圖顯示對於具有105mg(毫克）碳纖維束濾嘴 之3種不同濾嘴組態的乙醛排放及異戊二烯排放對抽煙總 口數。如第5及6圖所示，曲線A係具有醋酸纖維素（CA) -12- 201143642 濾嘴之市場上可購得菸草條（超低排出量）；曲線B係具有 有多個孔之l〇5mg碳纖維束濾嘴部分及醋酸纖維素（CA)煙 嘴的市場上可購得菸草條（超低排出量）；曲線C係具有 llOmg碳纖維束濾嘴部分（未阻塞的管）及醋酸纖維素（CA) 煙嘴的市場上可購得菸草條；曲線D係具有105 mg碳纖維 束濾嘴部分及醋酸纖維素（CA)煙嘴的市場上可購得菸草條 (超低排出量）；以及曲線E係具有有4個孔之105mg碳纖 維束濾嘴部分及醋酸纖維素（CA)煙嘴的市場上可購得菸草 條（超低排出量）。. 第7及8圖顯示根據針對數種市場上可購得香煙組態 之4孔管狀設計的乙醛排放及異戊二烯排放對抽煙總口 數'。如第7及8圖所示，曲線A係具有醋酸纖維素（CA)濾 嘴之市場上可購得菸草條（超低排出量）；曲線B係具有多 孔之105mg碳纖維束部分及醋酸纖維素（CA)濾嘴之市場上 可購得菸草條（超低排出量）；曲線 C係具有一有旁路之 60mg碳纖維束部分及醋酸纖維素（CA)煙嘴之市場上可購 得菸草條（超低排出量）；曲線D係具有10 5 mg碳纖維束部 分及醋酸纖維素（CA)煙嘴之市場上可購得菸草條（超低排 出量）；以及曲線E係具有60mg碳纖維束部分及醋酸纖維 素（CA)煙嘴之市場上可購得菸草條（超低排出量）。 驗及分 實 9 部 之第束 礎如維 基。纖 爲數碳 煙□; 口總 一 煙 接抽 煙對 口放 一 hF - 有 以燃 據二 根戊 示異 顯及 圖放 0 fch 1 捏 及醛 9 乙 第的 煙 香 之 路 旁 有 1 有 具 係 A 線 曲 示 所 圖 ο m -13- 201143642 及醋酸纖維素（cA)煙嘴之市場上可購得菸草條（超低排出 量）；以及曲線B係具有6 0mg碳纖維束部分及醋酸纖維素 (CA)煙嘴之市場上可購得菸草條（超低排出量）。 第11圖比較依據一實施例之一濾嘴設計與另一市場 上可購得香煙之主流煙（MS)成分減少的百分比之曲線圖。 如第1 1圖所示，左側線條係具有一有旁路之1 mg碳纖維 束部分的市場上可購得香煙，以及右側線條係具有限制及 6 〇mg碳纖維束部分之市場上可購得香煙。 第12及13圖顯示根據以一口煙接一口煙爲基礎之實 驗香煙的乙醛排放及異戊二烯排放對抽煙總口數。如第1 2 及13圖所示，曲線A係具有醋酸纖維素（CA)煙嘴之市場上 可購得菸草條（超低排出量）；曲線B係具有22mm碳纖維 束部分及22mm旁通管（10個孔）以及醋酸纖維素（CA)煙嘴 之市場上可購得菸草條（超低排出量）；曲線C係具有26mm 碳纖維束及26mm旁通管（10個孔）以及醋酸纖維素（CA)煙 嘴之市場上可購得菸草條（超低排出量）；曲線D係具有 22mm碳纖維束及25mm旁通管（10個孔）以及醋酸纖維素 (CA)煙嘴之市場上可購得菸草條（超低排出量）；曲線E係 具有12mm碳纖維束（亦即.，.6.0mg碳纖維束）以及一醋酸纖 維素（CA)煙嘴之市場上可購得菸草條（超低排出量），·以及 曲線F係具有一無旁通管之2 6mm碳纖維束及醋酸纖維素 (CA)煙嘴之市場上可購得菸草條（超低排出量）。 201143642 表1顯示複數個吸煙製品之總微粒物質（τρΜ)排出 量。如表1所示，在l〇5mg碳纖維束（COT)濾嘴中所排出 之TP Μ係具有濃味道之市場上可購得香煙所特有，因爲沒 有稀釋。50mg COT香煙係在濾嘴之圓周上有12個稀釋孔 的市場上可購得香煙。 [表 1]_ 來自實驗濾嘴之總微粒物質(TPM)排出量 濾嘴組態 平均焦油排出量(mg) 標準偏差(mg) CA/CA控制 15.6 1.9 CA/60mg COT 4 孔管 12.9 1.6 CA/110mgCOT4 孔管 12.3 1.9 CA/llOmgCOT 多孑L管 14.5 2.2 CA/llOmgCOT開放端管 14.8 2.1 CA/60mg COT 沒有管 10.2 N/A CA/110mg COT 沒有管 10.7 1.9 表2顯示關於一些市場上可購得香煙與依據一實施例 之吸煙製品的乙醛及異戊二烯排出量。如表2所示，乙醛 及異戊二烯排出量有顯示減少。例如，當排出一濃味道吸 煙製品之總微粒物質（TPM)時，乙醛之數値落在一市場上可 購得香煙之範圍內，以及異戊二烯適當地下降至目前在該 市場上可購得香煙組態上所看到之數値以下。 須知’前述係屬於較佳實施例，以及因此，只是該製 品及其製造方法的代表。可知，根據上.面教示之不同實施 例的許多變更及修改對熟習該項技藝者係顯而易見的。於 是’可以實施該等示範性實施例及替代實施例而不脫離在 所附申請專利範圍所述之該等製品及方法的精神及範圍。 -15- 201143642 [表2] 關於市場上可購得產品之乙醛及異戊二烯排出暈 香煙型態 乙醛(gg/cig) 乙醛中之SD (Ug/cig) 異戊二烯 Cue/cig) 異戊二烯中之 SD (ug/cig) 濃味道 742.17 60.01 442.69 23.5 低排出量 684.92 51.82 409.50 28.63 超低排出量 406.17 42.94 265.79 10.89 CA/60mg COT 4孔 479 48 203 28 CA/110mg COT 4孔 376 48 151 37 CA/110mg COT 多孔 473 93 154 32 【圖式簡單說明】 第1圖係依據一實施例之一吸煙製品的立體圖； 第2圖係依據另一實施例之一吸煙製品的立體圖； 第3圖係依據另一實施例之一吸煙製品的立體圖； 第4A圖係如第1 -3圖所示之一吸煙製品的一未阻塞孔 的影像； 第4B圖係在聯邦貿易委員會（FTC)先行條件（35立方 公分、2秒持續期間，正弦波形）下在吸煙機器上吸該吸煙 製品後一被第4A圖之吸煙製品的焦油所阻塞之孔的影像； 第5圖係依據具有1〇5 mg碳濾嘴之3種不同濾嘴組態 的一實施例之乙醛排放對抽煙總口數的曲線圖； 第6圖係依據具有1〇5 mg碳濾嘴之2種不同濾嘴組態 的另一實施例之異戊二烯排放對抽煙總口數的曲線圖； 第7圖係如第1圖所示之吸煙製品的乙醛排放對抽煙 [S] 總口數的曲線圖； -16- 201143642 第8圖係如第1圖所示之吸煙製品的異戊二烯排放對 抽煙總口數的曲線圖； 第9圖係依據另一實施例之吸煙製品的乙醛排放對抽 煙總口數之曲線圖； 第10圖係依據另一實施例之吸煙製品的異戊二烯排 放對抽煙總口數之曲線圖； 第11圖係比較依據一實施例之濾嘴設計與市場上可 購得香煙之主流煙（MS)成分減少的百分比之曲線圖； 第1 2圖係如第3圖所示之吸煙製品的乙醛排放對抽煙 總口數的曲線圖；以及 第1 3圖係如第3圖所示之吸煙製品的異戊二烯排放對 抽煙總口數的曲線圖。 【主要元件符號說明】 10 吸煙製品 14 下游端或頂端 16 上游1ί而 18 下游端 20 菸草條 22 可吸煙材料 24 外捲煙材料 26 塡料捲紙 28 煙嘴紙 3 0 濾嘴 201143642 32 上 游 部 分 34 空 腔 36 下 游 部 分 40 通 道 42 中 空 管 狀 構 件 44 孔 46 外 圓 周 48 不 滲 透 塡 料 (密封端） 50 碳 濾 嘴 52 醋 酸 纖 維 素 材料或碳纖維束部分 54 上 游 端 56 下 游 端 5 8 上 游 端 64 下 游 t-flf m 66 旁 通 開 □ 或 孔 -18-201143642 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a smoking article and a filter for a smoking article to improve a sensory variable curve of a smoking article equipped with a carbon filter. [Prior Art] Smoking articles (especially cigarettes) typically comprise a piece of tobacco rod (usually in the form of a cut filter) surrounded by cigarette paper and a cylinder aligned with the tobacco rod in an end-to-end relationship Shape filter. The tobacco rod typically has a diameter of between about 7 and about 10 mm and a length of between about 60 mm and about 1 25 mm. Typically, the filter comprises a cellulose acetate tow tundish attached to the tobacco rod with a tipping paper. The flow of mainstream smoke can be achieved by perforating one or more columns along a location near the filter. Additionally, activated carbon can be added to the filter to remove many of the gas phase components from the smoke. Unfortunately, American smokers are aware of the lack of perception of carbon filter cigarettes. SUMMARY OF THE INVENTION It is desirable for a smoking article to provide an acceptable taste during the beginning of a cigarette or a plurality of cigarettes, and thereafter to direct the mainstream smoke via a carbonaceous and/or high ventilation filter. In addition, it is desirable to achieve a more flatter profile for volatile organic compounds (VOC) and then to achieve a more balanced initial flow of carbonaceous and/or high venting filter portions of the filter. Sense-5- 201143642 According to an embodiment, a filter for a smoking article comprises: ~ an upstream portion 'which includes a carbon filter: and a hollow tubular member concentrically located within the carbon filter and at The hollow tubular member has one or more holes on the outer circumference to allow the mainstream smoke to bypass the carbon filter during the earliest cigarette smoke, and after the first cigarette or the cigarette smoke is smoked, the mainstream smoke passes through the The carbon filter is aspirated; and a downstream portion of the filter material. In accordance with another embodiment, a smoking article includes: a smokable material sapwood strip; and a filter attached to the smokable material tobacco strip. The filter includes: an active carbon material upstream portion, wherein the upstream portion includes a hollow tubular member concentrically located within the activated carbon material, and wherein the hollow tubular member has one or more holes on an outer circumference thereof Allowing mainstream smoke to bypass the activated carbon material during the earliest number of cigarettes; a downstream portion of the filter material; and a cavity between the upstream portion and the downstream portion 'where the hollow tubular member is initially on the smoking article During a cigarette or a few cigarettes, it has a lower resistance to sucking than the activated carbon material, and in which the mainstream smoke is sucked out through the activated carbon material after initially taking a cigarette or smoking a cigarette. [Embodiment] Fig. 1 shows a perspective view of a smoking article 10 in the form of a cigarette, which is composed of a tobacco rod 20 and a filter 30 in accordance with an embodiment. The filter 3''' includes an upstream portion 32, a downstream portion 36, and an open cavity 34 between the upstream portion 32 and the downstream portion 36. According to an embodiment, the upstream portion 32 is a carbon filter E1 -6-201143642 having a channel 4 同 concentrically located therein. The nozzle 40 has a channel 40 having an outer circumference 46 according to an embodiment. A hollow tubular member 42 (i.e., a bypass tube) of one or more apertures 44 is formed. Preferably, in use, the channel 40 has a lower resistance to suction than the carbon filter, such that it is produced by first smoking a cigarette (ie, drawing a second, third, etc.). The mainstream smoke bypasses the carbon filter 50. The channel 40 delivers at least a substantial portion of the mainstream smoke that is not in contact with any carbonaceous material at the beginning of smoking, and thus lacks the perceived weakness associated with a carbon filter cigarette. After the initial smoking of a cigarette on a smoking article 10. the holes 44 are blocked or blocked so that the smoke caused by the subsequent smoking of the cigarette passes through the carbonaceous material or any other filter absorbent body. Or the carbon filter 50 of the catalytic material is taken out. As shown in Fig. 1, a smokable material 22 is contained in an external squeegee material 24. The outer cigarette material 24 is typically a porous cigarette material or cigarette paper. The strip 20 is commonly referred to as a "tobacco strip" and has a point of smoke or upstream end (not shown) and a downstream end or tip end 14. The smokable material 22 is preferably a piece of tobacco or tobacco cut-off filter. However, any suitable smokable material 22 can be used. The filter 30 is adjacent to the top end 14 of the tobacco rod 20 such that the filter 30 is axially aligned in end-to-end relationship with the tobacco rod 20, preferably adjacent to each other. The filter 30 has a generally cylindrical shape and its diameter is substantially equal to the diameter of the tobacco rod 20. The ends of the filter 30 (i.e., the 'upstream end 16 and the downstream end 18 (i.e., or the mouth end)) are open for air and smoke to pass. According to an embodiment, the filter 30 includes an upstream portion 32, a downstream (or mouth) portion 36 formed by the carbon filter 50 and a hollow tubular member 42 concentric with the carbon filter 50, and a cavity 34 between the upstream portion 32 and the downstream portion 36. The carbon filter 50 is preferably constructed of an activated carbon material mixed with a cellulose acetate material or a carbon fiber bundle (COT) portion 52. In another aspect, the carbon filter 5 can be a crimped carbon paper, a carbon monolith or a cavity filled with granulated or beaded carbon or other suitable carbon material or a combination thereof. Preferably, a roll of paper 26 circumscribes the entire length of the filter 30 (including the upstream portion 32, the cavity 34 and the downstream portion 36). According to an embodiment, the roll paper 26 is a sheet of paper, optionally comprising a carbonaceous material. The filter 30 is attached to the smoking strip 20' by a tipping paper 28. The mouthpiece paper 28 is externally attached to the entire length of the filter 3 and the adjacent area of the smoking strip 20. The mouthpiece paper 28 is typically a paper-like product, and any suitable material can be used. According to an embodiment, as shown in Fig. 1, the passage 40 is preferably constructed of a hollow tubular member 42 having a venting communication with the cavity 34 on its outer circumference 46. One or more apertures 44' and a non-permeable barrier 48 are formed on the downstream end 64 of the hollow tubular member 42. According to an embodiment, the downstream end 64 of the hollow tubular member 42 preferably abuts the downstream portion 36 of the filter 30. In the other case, the downstream end 64 of the hollow tubular member 42 can be located in the cavity 34 or on one of the downstream ends 56 of the upstream portion 32 (Fig. 3). On the upstream end 62, 201143642 the tubular member 42 optionally extends into or adjacent the top end 14 of the smoking strip 20. The hollow tubular member 42 may be composed of an impervious material and/or a permeable material depending on the desired permeability and/or resistance to draw (RTD) of the filter 3 on the shaft and in the radial direction. Composition. According to an embodiment, the hollow tubular member 42 can be a hollow paper tube or a hollow plastic tube. In another embodiment, the hollow tubular member 42 can be filled with a material suitable for its controlled permeability and/or controlled suction resistance (RTD). According to a preferred embodiment, the carbon filter 50 is a carbon fiber bundle portion 52' having a length of about 22 mm which surrounds a tubular member 42 having a length of about 25 mm. Due to the different lengths between the carbon filter 50 and the hollow tubular member 42, the hollow tubular member 42 extends into the cavity 34 between the upstream portion 32 and the downstream portion 36. Preferably, the downstream end 64 of the hollow tubular member 42 extends beyond the downstream end 56 of the carbon filter 50 of the filter 30 by about 1 to 5 mm, more preferably about 2 to 3 mm. As shown in Fig. 1, the holes 44 are located on the outer circumference 46 of the hollow tubular member 42 adjacent the sealed end 48. Preferably, the apertures 44 include at least two openings or apertures 44 in at least one circumferential row. According to an embodiment, the at least one row of apertures 44 is preferably located at an outer circumference 46 of the sealed end 48 and depending on the size of the openings or apertures 44 having a number of 2 to 6. According to an embodiment, the apertures 44 preferably have a diameter of about 〇5 mm or less. [S] -9- 201143642 The downstream portion 36 of the filter 3 (i.e., the mouth end) is preferably constructed of a filter material such as 'starch-based polypropylene or plasticized cellulose acetate tow. The filter material of the downstream portion 36 can also be in the form of a gathered web (e.g., 'polypropylene mesh, polyester mesh, cellulosic mesh or starch based mesh). During the initial smoking or smoking of the cigarette, the smoke is sucked through the concentric hollow tube or channel 4 due to the low suction resistance of the concentric hollow tube or channel 40. Therefore, the hole 44 of the tubular member 42 (constituting the passage 40) is partially or completely blocked before the cigarette smoking is subsequently applied to the smoking article 10, so that the mainstream smoke is no longer preferentially passed through the tubular member 42, instead, the mainstream The smoke is sucked out through the length of the carbon filter 50. According to an embodiment, the passage 40 has a lower resistance to suction (RTD) than the carbon filter 50 to allow a portion of the mainstream smoke to pass through the hollow tubular member 42 without contacting the carbonaceous material in the carbon filter 50. . When the particulate matter is aspirated through the aperture 44 in the sealed end 46 of the hollow tubular member 42, the apertures 44 become blocked by the particulate matter and tar to prevent further bypassing, and then, through the carbon filter Mouth 50 filters all of the mainstream smoke. It can be appreciated that the suction resistance (rtd) and flow distribution of the channel 40 and the carbon filter 50 can vary depending on several factors including the length of the filter 30 and the carbon filter 50 and the downstream portion 36. Depending on the nature or type of filter material). In another case, the filter's resistance to suction (RTD) and flow distribution may be varied and/or controlled based on the amount and activity of the carbonaceous material of the carbon filter 50. 201143642 As shown in Fig. 2, the filter 30 includes a passage 40 that is co-located and coaxially located in the carbon filter 50. The passage 40 preferably extends from the upstream end 16 of the filter 30 to the upstream end 58 of the downstream portion 36 and to the downstream portion 36 of the filter 30. The passage 40 is preferably constructed of a hollow tubular member 42 having a plurality or a series of holes 44 in the outer circumference 46 and an impervious on the downstream end of the hollow tubular member 42. Unexpected 48. According to an embodiment, the hollow tubular member 42 includes a series of apertures 44 on its outer circumference 46 that extend the length of the tubular member 42. The series of openings or apertures 44 preferably include at least two openings or apertures 4 4 in at least two circumferential rows along the length of the tubular member 42. As shown in Fig. 3, the hollow tubular member 42 includes on its circumference a series of one or more openings or holes 44 that extend the length of the tubular member 42. According to an embodiment, the tubular member 42 extends from an upstream end 54 of the carbon filter 50 to a downstream end 56 of the carbon filter 50. The impervious crucible 48 on the downstream end of the tubular member 42 is preferably adjacent to the cavity 34 or, optionally, in the cavity 34. Preferably, the plurality of openings or apertures 4 4 include at least two openings or apertures 44 in at least two circumferential rows along the length of the tubular member 42. According to an embodiment, the impervious mass 4 8 on the swim end below the tubular member 42 includes a bypass opening or aperture. 6 6.. Preferably, the bypass opening or aperture 66 is centrally located in the impermeable dip 48 and has an outer diameter of about 0.5 mm or less. Preferably, the impermeable material 48 is a hot melt adhesive or other suitable material. According to an embodiment I S1 201143642, it is preferred that the bypass opening or aperture 66 penetrates the impervious mass 48 and is allowed to be at the downstream portion 36 (or Cellulose Acetate (CA) cigarette holder) The tar is blocked. Figures 4A and 4B show an unobstructed hole in one of the smoking articles and after smoking the smoking article on the smoking machine under the Federal Trade Commission (FTC) precondition (35 cubic centimeters, 2 seconds duration, sinusoidal waveform) Image of the hole blocked by the tar of the smoking article of Figure 4A. The results as shown in Figs. 4A and 4B were obtained using a filter having a carbon fiber bundle portion (COT) of about 22 mm length as shown in Fig. 2. Figures 5, 7, 9 and 12 show graphs of acetaldehyde emissions versus total number of cigarettes vented according to various filter configurations. Figures 6, 8, 10 and 13 show plots of isoprene emissions versus total number of cigarettes according to various filter configurations. As shown in Figures 5-10 and 12-13, especially the higher volatile organic compound (VOC) emissions in the earlier cigarettes and the cellulose acetate (CA)/carbon fiber bundle with 4 holes ( The flattering curve of the COT) 105 mg custom filter suggests that a carbon bypass is occurring and the initial carbon bypass can improve the rate of removal when smoking is later. Figures 9 and 10 show that the filter with a 5 碳 carbon fiber bundle (COT) design with a bypass tube has the same acetaldehyde emission as the 60 mg COT control (no tube) at the earliest number of cigarettes. However, when the total number of cigarettes increases, the amount of discharge deviates. Figures 5 and 6 show the total venting of acetaldehyde and isoprene emissions for three different filter configurations with 105 mg (mg) carbon fiber bundle filters. As shown in Figures 5 and 6, curve A is a commercially available tobacco rod (ultra-low discharge) with a cellulose acetate (CA) -12- 201143642 filter; curve B has a plurality of holes. 〇 5 mg carbon fiber bundle filter part and cellulose acetate (CA) cigarette holder commercially available tobacco rod (ultra-low discharge); curve C has llOmg carbon fiber bundle filter part (unblocked tube) and cellulose acetate (CA) cigarette rods are commercially available in tobacco rods; curve D is a commercially available tobacco rod (ultra-low discharge) with 105 mg carbon fiber bundle filter portion and cellulose acetate (CA) cigarette holder; and curve E A commercially available tobacco rod (ultra-low discharge) having a 105 mg carbon fiber bundle filter portion having 4 holes and a cellulose acetate (CA) cigarette holder. Figures 7 and 8 show the total number of cigarettes emitted by acetaldehyde emissions and isoprene emissions based on a 4-hole tubular design for several commercially available cigarette configurations. As shown in Figures 7 and 8, curve A is a commercially available tobacco rod (ultra-low discharge) with a cellulose acetate (CA) filter; curve B is a porous 105 mg carbon fiber bundle portion and cellulose acetate. (CA) filter commercially available tobacco rods (ultra-low discharge); curve C has a commercially available tobacco rod with a 60 mg carbon fiber bundle portion with a bypass and a cellulose acetate (CA) cigarette holder ( Ultra-low discharge); curve D is a commercially available tobacco rod (ultra-low discharge) with 10 5 mg carbon fiber bundle portion and cellulose acetate (CA) cigarette holder; and curve E has 60 mg carbon fiber bundle portion and acetic acid Tobacco strips (ultra-low emissions) are commercially available on the market for cellulose (CA) cigarette holders. The first part of the inspection and division is based on the base. The fiber is a few carbon smoke □; the mouth is always a cigarette and the smoke is placed on the mouth to put a hF - there is a fuel on the basis of two sputum and the map is placed 0 fch 1 pinch and aldehyde 9 B. Line A shows the commercially available tobacco rods (ultra-low discharge) on the market ο m -13- 201143642 and cellulose acetate (cA) cigarette holders; and curve B has 60 mg carbon fiber bundles and cellulose acetate (CA) Tobacco strips are available on the market for cigarette holders (ultra-low discharge). Figure 11 is a graph comparing the percentage of filter design according to one embodiment to the percentage reduction of mainstream smoke (MS) components of commercially available cigarettes. As shown in Figure 11, the left line is a commercially available cigarette with a bypassed 1 mg carbon fiber bundle portion, and the commercially available cigarettes on the right side with a limit and 6 〇mg carbon fiber bundle portion. . Figures 12 and 13 show the total number of cigarettes emitted by acetaldehyde emissions and isoprene emissions from test cigarettes based on a cigarette and a cigarette. As shown in Figures 1 and 13, curve A is a commercially available tobacco rod (ultra-low discharge) with cellulose acetate (CA) cigarette holder; curve B has a 22 mm carbon fiber bundle portion and a 22 mm bypass tube ( 10 holes) and cellulose acetate (CA) cigarette holders available on the market for tobacco rods (ultra-low discharge); curve C with 26mm carbon fiber bundles and 26mm bypass tubes (10 holes) and cellulose acetate (CA) Tobacco strips (ultra-low discharge) available on the market for cigarette holders; curve D is commercially available tobacco rods with 22mm carbon fiber bundles and 25mm bypass tubes (10 holes) and cellulose acetate (CA) cigarette holders (Ultra-low discharge); Curve E is a commercially available tobacco rod (ultra-low discharge) with a 12 mm carbon fiber bundle (ie, .6.0 mg carbon fiber bundle) and a cellulose acetate (CA) cigarette holder. And curve F is a commercially available tobacco rod (ultra-low discharge) having a 6 mm carbon fiber bundle without a bypass tube and a cellulose acetate (CA) cigarette holder. 201143642 Table 1 shows the total particulate matter (τρΜ) emissions from a number of smoking articles. As shown in Table 1, the TP oxime discharged in the 10 碳 5 mg carbon fiber bundle (COT) filter was characteristic of commercially available cigarettes having a strong taste because it was not diluted. A 50 mg COT cigarette is commercially available in the form of 12 dilution holes on the circumference of the filter. [Table 1]_ Total particulate matter (TPM) discharge from the experimental filter Filter configuration Average tar discharge (mg) Standard deviation (mg) CA/CA control 15.6 1.9 CA/60mg COT 4 orifice tube 12.9 1.6 CA /110mgCOT4 orifice tube 12.3 1.9 CA/llOmgCOT multi-tube L tube 14.5 2.2 CA/llOmgCOT open end tube 14.8 2.1 CA/60mg COT no tube 10.2 N/A CA/110mg COT no tube 10.7 1.9 Table 2 shows some available on the market The amount of acetaldehyde and isoprene discharged from the cigarette and the smoking article according to an embodiment is obtained. As shown in Table 2, the discharge amounts of acetaldehyde and isoprene were shown to decrease. For example, when a total particulate matter (TPM) of a concentrated flavor smoking article is discharged, the amount of acetaldehyde falls within the range of commercially available cigarettes, and isoprene is appropriately subdivided down to the current market. The number of cigarettes that can be purchased is less than the number seen. It is to be understood that the foregoing is a preferred embodiment and, therefore, is merely representative of the article and its method of manufacture. It will be apparent that many variations and modifications of the various embodiments in accordance with the teachings of the above are apparent to those skilled in the art. The exemplary embodiments and alternative embodiments can be carried out without departing from the spirit and scope of the articles and methods described in the appended claims. -15- 201143642 [Table 2] About acetaldehyde and isoprene on commercially available products Exhaust cigarette type acetaldehyde (gg/cig) SD (Ug/cig) in acetaldehyde Isoprene Cue /cig) SD (ug/cig) in isoprene Concentrate 742.17 60.01 442.69 23.5 Low discharge 684.92 51.82 409.50 28.63 Ultra low discharge 406.17 42.94 265.79 10.89 CA/60mg COT 4 hole 479 48 203 28 CA/110mg COT 4 hole 376 48 151 37 CA/110mg COT porous 473 93 154 32 [Simplified description of the drawings] Fig. 1 is a perspective view of a smoking article according to one embodiment; Fig. 2 is a smoking article according to another embodiment Figure 3 is a perspective view of a smoking article according to another embodiment; Figure 4A is an image of an unobstructed hole of a smoking article as shown in Figures 1 - 3; Figure 4B is on the Federal Trade Commission (FTC) an image of a hole blocked by the tar of the smoking article of Figure 4A after the smoking article is sucked on the smoking machine under the precondition (35 cubic centimeters, 2 seconds duration, sinusoidal waveform); Figure 5 is based on A real version of 3 different filter configurations with 1〇5 mg carbon filter A graph of the acetaldehyde emissions of the examples versus the total number of cigarettes; Figure 6 is a graph of isoprene emissions versus smoking for another embodiment based on two different filter configurations with a 1 〇 5 mg carbon filter. The graph of the number of mouths; Figure 7 is a graph of the acetaldehyde emissions of smoking articles as shown in Figure 1 versus the total number of cigarettes [S]; -16- 201143642 Figure 8 is shown in Figure 1. A graph of the isoprene emissions of the smoking article versus the total number of cigarettes; Figure 9 is a graph of the acetaldehyde emissions of the smoking article according to another embodiment versus the total number of cigarettes; Figure 10 is based on another implementation A graph of the isoprene emissions of a smoking article versus the total number of cigarettes smoked; Figure 11 is a comparison of the filter design according to an embodiment and the percentage of mainstream smoke (MS) components of commercially available cigarettes. Graph; Figure 12 is a graph of the acetaldehyde emissions of smoking articles as shown in Figure 3 versus the total number of cigarettes smoked; and Figure 13 is a isoprene of the smoking article as shown in Figure 3. A graph of emissions versus total number of cigarettes. [Main component symbol description] 10 Smoking article 14 downstream or top 16 upstream 1 ί and 18 downstream 20 tobacco rod 22 Smoking material 24 outer cigarette material 26 卷 roll paper 28 cigarette holder paper 3 0 filter 201143642 32 upstream part 34 empty Cavity 36 downstream portion 40 channel 42 hollow tubular member 44 bore 46 outer circumference 48 impermeable weir (sealed end) 50 carbon filter 52 cellulose acetate material or carbon fiber bundle portion 54 upstream end 56 downstream end 5 8 upstream end 64 downstream t -flf m 66 bypass opening or hole-18-