SK283397B6 - Cigarette with reduced gas phase - Google Patents

Cigarette with reduced gas phase Download PDF

Info

Publication number
SK283397B6
SK283397B6 SK694-2000A SK6942000A SK283397B6 SK 283397 B6 SK283397 B6 SK 283397B6 SK 6942000 A SK6942000 A SK 6942000A SK 283397 B6 SK283397 B6 SK 283397B6
Authority
SK
Slovakia
Prior art keywords
filter
cigarette
paper
column
activated carbon
Prior art date
Application number
SK694-2000A
Other languages
Slovak (sk)
Other versions
SK6942000A3 (en
Inventor
Edgar Mentzel
Henning Seidel
Original Assignee
Reemtsma Cigarettenfabriken Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8166799&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SK283397(B6) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Reemtsma Cigarettenfabriken Gmbh filed Critical Reemtsma Cigarettenfabriken Gmbh
Publication of SK6942000A3 publication Critical patent/SK6942000A3/en
Publication of SK283397B6 publication Critical patent/SK283397B6/en

Links

Classifications

    • 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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • 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
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • 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
    • A24D3/043—Tobacco smoke filters characterised by their shape or structure with ventilation means, e.g. air dilution
    • 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
    • A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/163—Carbon

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Colloid Chemistry (AREA)
  • Vending Machines For Individual Products (AREA)
  • Glass Compositions (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Manufacture Of Tobacco Products (AREA)

Abstract

The invention relates to a cigarette with a filter containing activated carbon. Said cigarette comprises a tobacco string wrapped in cigarette paper, a double filter having a string-side part consisting of a tissue paper containing carbon, and a peripherally extending filter ventilation zone and located in the mouth-side part made of cellulose acetate. The tissue paper of the string-side filter part is a very bulky paper which contains 20 to 50 % wt. microfine powdered active carbon. The ratio of condensate retention capacities of the string-side filter part to the mouth-side filter part ranges from 1 to 2. The air permeability of the cigarette paper is comprised between 40 and 100 Coresta units and the filter ventilation grade is comprised between 5 and 60 %.

Description

Oblasť technikyTechnical field

Vynález sa týka cigarety s redukovanou plynnou fázou.The invention relates to a reduced gas phase cigarette.

Doterajší stav technikyBACKGROUND OF THE INVENTION

Je známe, že vkladaním materiálov s veľkým povrchom do filtra, ako napr. aktívneho uhlia, môže byť z dymu zadržaná časť plynných súčastí dymu. Selektívna retencia takého druhu vedie k nežiaducim chuťovým zmenám a tým k odmietaniu takých výrobkov fajčiarmi. Pokusy kompenzovať tento negatívny sprievodný jav sú veľmi nákladné, komplikované a s intenzívnymi výdajmi, pozri tiež DE 41 05 500.It is known that by inserting large surface materials into a filter, e.g. activated carbon, some of the gaseous components of the smoke may be retained from the smoke. Selective retention of this kind leads to undesirable taste changes and thus to the rejection of such products by smokers. Attempts to compensate for this negative accompanying phenomenon are very costly, complicated and costly, see also DE 41 05 500.

Obvyklé, pre plynnú fázu aktívne filtre, sú vo väčšine komorové filtre, ktoré sa rozdeľujú na tri segmenty a v prostrednej komore obsahujú povrchovo aktívny materiál ako aktívne uhlie, morskú penu, silikagél atď. Tieto systémy sú čo do uskutočnenia veľmi drahé a majú závažnú nevýhodu v tom, že stabilita komory z hľadiska stláčania počas fajčenia je neuspokojujúca. Inými možnosťami riešenia sú konštrukcie dvojitých filtrov, pri ktorých je aktívne uhlie v malých množstvách rozptýlené vo filtračnom elemente na strane stĺpca tabaku. Tieto konštrukcie majú iba obmedzenú a pre mnohé možnosti použitia nevyhovujúcu redukciu plynnej fázy. Všetkým známym konštrukciám je spoločná negatívna chuťová zmena, ktorú fajčiar označuje ako uhoľná chuť.Conventional gas phase active filters are in most of the chamber filters which are divided into three segments and contain in the middle chamber a surfactant material such as activated carbon, sea foam, silica gel, etc. These systems are very expensive to implement and have the serious disadvantage that the stability of the chamber in terms of compression during smoking is unsatisfactory. Another possible solution is the construction of double filters in which activated carbon is dispersed in small amounts in the filter element on the side of the tobacco column. These constructions have only limited and for many applications unsatisfactory gas phase reduction. All known designs are a common negative taste change, which the smoker refers to as a coal taste.

Zreteľné, ale ešte nie celkom uspokojivé zlepšenie sa ukázalo pri použití hodvábneho papiera obsahujúceho uhlie, ktorý bol zmiešaný s mikrojemne zomletým uhlím (veľkosť zrna < 15 pm).A noticeable but not yet satisfactory improvement has been shown by the use of carbon-containing tissue paper mixed with microfine ground coal (grain size <15 µm).

Podstata vynálezuSUMMARY OF THE INVENTION

Úlohou vynálezu je vyvinúť cigaretu s filtrom aktívnym pre plynnú fázu, ktorý je veľmi účinný a zároveň vyrobiteľný s priaznivými nákladmi.SUMMARY OF THE INVENTION The object of the invention is to provide a cigarette with a gas-phase filter which is very efficient and at the same time obtainable at a favorable cost.

Vynález sa teda týka cigarety s filtrom, obsahujúcim vo filtri aktívne uhlie, pričom cigareta obsahuje:The invention therefore relates to a cigarette with a filter comprising activated carbon in the filter, the cigarette comprising:

a) stĺpec tabaku obklopený cigaretovým papierom;(a) a column of tobacco surrounded by cigarette paper;

b) dvojitý filter, pri ktorom časť na strane stĺpca tvorí hodvábny papier obsahujúci uhlie, a vyznačuje sa(b) a double filter in which the part on the side of the column consists of tissue paper containing coal and is characterized by:

c) ventilačnou zónou filtra z acetátu celulózy prebiehajúcou v smere obvodu v časti na strane k ústam;c) a ventilation zone of the cellulose acetate filter extending in the circumferential direction in the mouth-side portion;

d) hodvábnym papierom časti filtra na strane k stĺpcu, ktorým je veľmi voluminózny papier, ktorý obsahuje 20 až 50 hmotn. % mikrojemne zomletého aktívneho uhlia;d) the tissue paper of a portion of the filter on the side of the column which is a very voluminous paper containing 20 to 50 wt. % micronised milled activated carbon;

e) pomerom retenčných výkonov kondenzátu časti filtra na strane stĺpca a časti filtra na strane k ústam, ktorý je medzi 1 a 2;(e) a ratio of the condensation retention rates of the column side filter portion and the mouth side filter portion being between 1 and 2;

f) priepustnosťou vzduchu cigaretovým papierom 40 až 100 cm3/min.cm2.kPa (Coresta jednotiek); af) air permeability of cigarette paper 40 to 100 cm 3 / min.cm 2 .kPa (Coresta units); and

g) ventilačným stupňom filtra, ktorý je 5 až 60 % obj.(g) a filter ventilation stage of 5 to 60% vol.

Pri cigarete s filtrom podľa vynálezu je poréznosť cigaretového papiera 30 až 60 rel. obj. % vyššie než poréznosť cigaretového papiera porovnateľnej cigarety vyrobenej s konvenčným filtrom a ventilačný stupeň filtra je 10 až 60 rel. obj. % nižšie než ventilačný stupeň filtra porovnateľnej cigarety vyrobenej s konvenčným filtrom.In a filter cigarette according to the invention, the porosity of the cigarette paper is 30 to 60 rel. vol. % higher than the porosity of the cigarette paper of a comparable cigarette made with a conventional filter and the filter ventilation rate is 10 to 60 rel. vol. % lower than the filter ventilation stage of a comparable cigarette manufactured with a conventional filter.

Hodvábny papier má plošnú hmotnosť (gramáž) cca 40 - 60 g/m , obsah aktívneho uhlia 15 - 50 % hmotn. a hrúbku 150 - 200 pm. Výhodný variant má plošnú hmotnosť (gramáž) 50 g/m2 a obsah aktívneho uhlia 30 % hmotn. pri hrúbke 180 pm.Tissue paper has a basis weight (grammage) of about 40-60 g / m, an activated carbon content of 15-50% by weight. and a thickness of 150-200 µm. A preferred variant has a basis weight (grammage) of 50 g / m 2 and an activated carbon content of 30% by weight. at a thickness of 180 pm.

Vo zvláštnej forme uskutočnenia je úsek filtra na strane stĺpca pri dvojitom filtri Core filtrom podľa DE 42 05 658 C2, v ktorom jadro je vytvorené z hodvábneho papiera obsahujúceho uhlie ako v skôr uvedenej forme uskutočnenia, ktorý je obalený plášťom z materiálu takmer nepriepustného pre hlavný prúd dymu. Tento pre dym takmer nepriepustný materiál sa skladá napríklad zo silne stlačených vlákien acetátu celulózy.In a particular embodiment, the column side filter section of the dual core filter is a filter according to DE 42 05 658 C2, wherein the core is formed of a carbon-containing tissue paper as in the aforementioned embodiment, which is wrapped with a substantially impermeable material smoke. This smoke-impermeable material consists, for example, of heavily compressed cellulose acetate fibers.

Prekvapujúcim spôsobom sa ukázalo, že pri použití materiálu aktívneho pre plynnú fázu má rozhodujúci vplyv nielen redukcia plynnej fázy, ale aj špecifické pomery retencie jednotlivých segmentov filtra v kombinácii s ventilačnými pomermi cigarety.Surprisingly, it has been shown that not only the gas phase reduction but also the specific retention ratios of the individual filter segments in combination with the ventilation ratios of the cigarette have a decisive effect when using the gas-active material.

Príklady uskutočnenia vynálezuDETAILED DESCRIPTION OF THE INVENTION

Ako zvlášť priaznivé sa ukázali v tabuľke 1 uvedené kombinácie B, D a F retenčných a ventilačných pomerov. Kombinácie A, C a E sú známe cigarety, ktoré boli kombináciami B, D a F podľa vynálezu zmenené.Combinations B, D and F of the retention and ventilation ratios have been shown to be particularly favorable in Table 1. Combinations A, C and E are known cigarettes that have been altered by Combinations B, D and F of the invention.

Senzorické porovnávania boli uskutočňované porotou expertov a poskytli nasledujúce výsledky: cigarety A a B sa líšia z hľadiska reaktivity, pričom variant B bol výrazne menej reaktívny, to znamená v preklade pre konzumenta, menej drsný a menej ostrý.Sensory comparisons were conducted by a panel of experts and gave the following results: cigarettes A and B differ in terms of reactivity, with variant B being significantly less reactive, that is to say, in terms of consumer, less harsh and less sharp.

Cigarety C a D sa v reaktivite líšia rovnakým spôsobom, pričom tabaková aróma variantu D sa prejavila silnejšie.C and D cigarettes differ in the same way in reactivity, with the tobacco flavor of variant D being more pronounced.

K rovnakému výsledku prišli experti tiež pri porovnávaní cigariet E a F. Variant F bol zreteľne menej reaktívny, mal však zvýšenú tabakovú arómu.Experts came to the same result when comparing cigarettes E and F. Variant F was clearly less reactive but had an increased tobacco flavor.

Je nápadné, že retenčný kvocient jednotlivých segmentov filtra je vyšší so znižujúcou sa hodnotou kondenzátu a nikotínu. Na docielenie aspoň rovnakej kvality tabakovej arómy je súčasne nutné zvýšiť poréznosť cigaretového papiera práve porovnávanej cigarety pri súčasnej redukcii ventilácie filtra. Príčinou lepšieho relatívneho nastavenia kvality arómy by tu mohlo byť rozvrstvenie veľkosti častíc v hlavnom prúde dymu, ktoré sú určujúce pre rozdielne rýchlosti prúdenia a tým sú ovplyvňované rozdielne teploty, pri ktorých nastáva tlenie tabaku. Pokusy ukázali, že keď sa k sebe navzájom prispôsobia podľa prúdenia pokusná a porovnávacia cigareta, tak dochádza k tzv. uhoľnej chuti a poklesu kvality arómy.It is remarkable that the retention quotient of the individual filter segments is higher with decreasing condensate and nicotine values. At the same time, in order to achieve at least the same quality of tobacco flavor, it is necessary to increase the porosity of the cigarette paper of the currently compared cigarette while reducing filter ventilation. The reason for the better relative adjustment of the aroma quality could here be the stratification of the particle size in the mainstream of the smoke, which determines the different flow rates and thus influences the different temperatures at which tobacco decay occurs. Attempts have shown that when the test and comparative cigarettes adapt to each other according to the flow, so-called &quot; coal taste and a decrease in aroma quality.

Na nastavenie požadovaného pomeru retencie úseku filtra od strany k stĺpcu do strany k ústam môžu byť vedľa známeho acetátového monofiltra použité aj iné formy uskutočnenia: koaxiálna konštrukcia časti filtra pri ústach poskytuje známym spôsobom možnosť nezávisle od seba optimálne nastaviť súčasne požadovanú retenciu a požadovaný otvorený odpor ťahu cigarety.In addition to the known acetate monofilter, other embodiments can be used to adjust the desired retention ratio of the side-to-column filter side to the mouth to the known acetate monofilter: the coaxial design of the orifice filter portion provides the known ability to independently adjust cigarettes.

Tabuľka 1Table 1

w w Utakwta Utakwta A A B B c C D D E E F F CeStovádSafími] CeStovádSafími] 84 84 84 84 84 84 84 84 84 84 84 84 Diäa tatekového a^pca [mm] Width of the ace [mm] 63 63 63 63 59 59 59 59 59 59 59 59 Dĺžka fitra[rrni| Length of filter [rrni | 21 21 21 21 25 25 25 25 25 25 25 25 Hnwnoďtatatawého sdpca [md Hnwnoďtatatawého sdpca [md 820 820 820 820 690 690 690 690 62ΰ 62ΰ 620 620 Odpcrrahu|daRa| Odpcrrahu | Dara | 75 75 75 75 ι4ύ ι4ύ Tvpfltra Tvpfltra Maxfter Maxfter DvcýGlter DvcýGlter NtnAff NtnAff Drajfter Drajfter MonAer MonAer EXqBte- EXqBte- Mjteriälftra Mjteriälftra Acetát cektKizv Acetate cektKizv Acetát cdjkÍKY Acetate cdjkÍKY Acetít ccUtey Acetít ccUtey Jednodvýderaer Jednodvýderaer 3,0y 3,0y 2iv 2IV Celkový derie- Total Derie- 35 000 35 000 55000 55000 Výrobca manufacturer Rhcda Rhcda Rtafia RTAF Hemext na strane φα Hemext on the φα side DSafmn] DSafmn] 13 13 13 13 13 13 OdpcrťalutdaPa] OdpcrťalutdaPa] 13 13 65 65 97 97 Meerai Meerane OHwýpft05 OHwýpft05 LHdfypa05 LHdfypa05 Utíkrvý papier Wiped paper Horert na strane úst: Horert on the mouth: Dtä3[mml Dtä3 [MML 8 8 12 12 12 12 Odpcr ŕfhj [daPa] Resistance [daPa] 24 24 28 28 33 33 Materiál material Acetát ctUózy CtUose acetate Acetát cetulózv Cetulose acetate Acetát cekizy Ceciz acetate Jednotlivý daíer Individual daíer Vy you 3,(My 3, (My 234y 234y CefcNvdaier CefcNvdaier 35000 35000 35000 35000 35000 35000 Kacífereát[rrR/cši.[ Kacífereát [RRR / CSI. [ 12.0 12.0 12.0 12.0 7,2 7.2 7,0 7.0 23 23 2.0 2.0 N3cotin[nig/dft] N3cotin [nig / dft] 0,80 0.80 0,83 0.83 0,64 0.64 0,66 0.66 022 022 024 024 Poréaxeŕ pepíent (Coresta) Poréaxe pepíent (Coresta) 24 24 43 43 60 60 80 80 40 40 80 80 VeÄoaftraf%] VeÄoaftraf%] 20 20 17 17 40 40 35 35 70 70 60 60 CdtaMtraenóa Γ/οί CdtaMtraenóa Γ / οί 38 38 38 38 50 50 50 50 70 70 70 70 Jednotŕsá raaraa |%] Single raaraa |%] (hastraneSkra) (HastraneSkra) 19 19 28 28 45 45 (na strane úst) (on the mouth side) 19 19 22 22 25 25 RetenčnýkotftíeÄ (stfeec/úaa) Retention rate (stfeec / úaa) 1 1 w w 13 13

Coresta = 1 cm3/cm2.min.kPa,Coresta = 1 cm 3 / cm 2 .min.kPa

Claims (3)

PATENTOVÉ NÁROKYPATENT CLAIMS 1. Cigareta s redukovanou plynnou fázou zahrnujúca filter obsahujúci aktívne uhlie, ktorá obsahujeA reduced gas phase cigarette comprising an activated carbon containing filter a) stĺpec tabaku obklopený cigaretovým papierom;(a) a column of tobacco surrounded by cigarette paper; b) dvojitý filter, ktorého časť na strane stĺpca tvorí hodvábny papier obsahujúci uhlie, vyznačujúca sa tým, že(b) a double filter, part of which is on the side of the column made of tissue containing coal, characterized in that: c) ventilačná zóna filtra z acetátu celulózy prebieha v smere obvodu v časti na strane k ústam;c) the ventilation zone of the cellulose acetate filter extends in the circumferential direction in the mouth-side portion; d) hodvábny papier časti filtra na strane stĺpca je voluminózny papier, ktorý obsahuje 20 až 50 hmotn. % mikrojcmne zomletého aktívneho uhlia;d) the tissue paper of the column side filter is a voluminous paper containing 20 to 50 wt. % micronised activated carbon; e) pomer retenčných výkonov kondenzátu časti filtra na strane stĺpca a časti filtra na strane k ústam je medzi 1 a 2;(e) the ratio of the condensation retention rates of the column side filter portion and the mouth side filter portion is between 1 and 2; f) priepustnosť vzduchu cigaretovým papierom je 40 až 100 cm3/min.cm2.kPa; af) the air permeability of the cigarette paper is 40 to 100 cm 3 / min.cm 2 .kPa; and g) ventilačný stupeň filtra je 5 až 60 % obj.(g) the ventilation stage of the filter is 5 to 60% vol. 2. Cigareta s filtrom podľa nároku 1,vyznačujúca sa tým, že hodvábny papier časti filtra na strane stĺpca obsahuje 30 hmotn. % mikrojemne zomletého aktívneho uhlia.Filter cigarette according to claim 1, characterized in that the tissue paper of the column side filter part comprises 30 wt. % micronised milled activated carbon. 3. Cigareta s filtrom podľa nároku 1 alebo 2, v y značujúca sa tým, že úsek filtra na strane stĺpca je aktívnou zónou filtra, pri ktorom je jadro z hodvábneho papiera, ktorý obsahuje uhlie, ktoré je obklopené plášťom z materiálu takmer nepriepustným pre hlavný prúd dymu.Filter cigarette according to claim 1 or 2, characterized in that the column side filter section is the active filter zone, wherein the core is a tissue paper core containing coal surrounded by a sheath of material substantially impermeable to the mainstream. smoke.
SK694-2000A 1997-11-13 1997-11-13 Cigarette with reduced gas phase SK283397B6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1997/006390 WO1999025210A1 (en) 1997-11-13 1997-11-13 Cigarette with reduced gas phase

Publications (2)

Publication Number Publication Date
SK6942000A3 SK6942000A3 (en) 2000-10-09
SK283397B6 true SK283397B6 (en) 2003-07-01

Family

ID=8166799

Family Applications (1)

Application Number Title Priority Date Filing Date
SK694-2000A SK283397B6 (en) 1997-11-13 1997-11-13 Cigarette with reduced gas phase

Country Status (16)

Country Link
EP (1) EP1028637B1 (en)
JP (1) JP3387055B2 (en)
KR (1) KR20010032084A (en)
AT (1) ATE220862T1 (en)
BG (1) BG63987B1 (en)
DE (1) DE59707821D1 (en)
DK (1) DK1028637T3 (en)
EA (1) EA001556B1 (en)
EE (1) EE200000264A (en)
ES (1) ES2179383T3 (en)
HK (1) HK1035472A1 (en)
HU (1) HU228293B1 (en)
SK (1) SK283397B6 (en)
TR (1) TR200001355T2 (en)
UA (1) UA49097C2 (en)
WO (1) WO1999025210A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SK283397B6 (en) * 1997-11-13 2003-07-01 Reemtsma Cigarettenfabriken Gmbh Cigarette with reduced gas phase
DE102005005175A1 (en) * 2005-02-01 2006-08-10 Reemtsma Cigarettenfabriken Gmbh Filter cigarette
GB0619958D0 (en) * 2006-10-09 2006-11-15 Filtrona Int Ltd Tobacco smoke filter
DE102009016148A1 (en) * 2009-04-03 2010-10-14 Mcairlaid's Vliesstoffe Gmbh & Co. Kg Filter material for cleaning air and gases
KR20230056843A (en) * 2021-10-20 2023-04-28 주식회사 케이티앤지 Cigarette filter and cigarette comprising thereof

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5271419A (en) * 1989-09-29 1993-12-21 R. J. Reynolds Tobacco Company Cigarette
US5360023A (en) * 1988-05-16 1994-11-01 R. J. Reynolds Tobacco Company Cigarette filter
AU635095B2 (en) * 1990-08-24 1993-03-11 Philip Morris Products Inc. Concentric smoking filter having discrete tow and web filter media
US5365951A (en) * 1990-08-24 1994-11-22 Philip Morris Incorporated Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core
DE4105500C1 (en) 1991-02-19 1992-06-17 H.F. & Ph.F. Reemtsma Gmbh & Co, 2000 Hamburg, De
GB9214267D0 (en) * 1992-07-04 1992-08-19 British American Tobacco Co Improvements relating to smoking articles
SE500634C2 (en) * 1992-12-22 1994-08-01 House Of Blend Ab fILTER TIP
US5404890A (en) * 1993-06-11 1995-04-11 R. J. Reynolds Tobacco Company Cigarette filter
US5685323A (en) * 1995-07-24 1997-11-11 R. J. Reynolds Tobacco Company Disposable filter attachment for smoking articles
US5839449A (en) * 1996-01-29 1998-11-24 R.J. Reynolds Tobacco Company Low CO cigarette
SK283397B6 (en) * 1997-11-13 2003-07-01 Reemtsma Cigarettenfabriken Gmbh Cigarette with reduced gas phase

Also Published As

Publication number Publication date
EP1028637A1 (en) 2000-08-23
EE200000264A (en) 2001-06-15
ATE220862T1 (en) 2002-08-15
TR200001355T2 (en) 2000-09-21
JP2001522616A (en) 2001-11-20
HU228293B1 (en) 2013-08-28
SK6942000A3 (en) 2000-10-09
HUP0100096A3 (en) 2001-06-28
HUP0100096A2 (en) 2001-05-28
HK1035472A1 (en) 2001-11-30
ES2179383T3 (en) 2003-01-16
JP3387055B2 (en) 2003-03-17
BG104522A (en) 2001-01-31
EA001556B1 (en) 2001-04-23
DE59707821D1 (en) 2002-08-29
WO1999025210A1 (en) 1999-05-27
DK1028637T3 (en) 2002-11-11
BG63987B1 (en) 2003-09-30
KR20010032084A (en) 2001-04-16
EA200000507A1 (en) 2000-10-30
UA49097C2 (en) 2002-09-16
EP1028637B1 (en) 2002-07-24

Similar Documents

Publication Publication Date Title
FI64737B (en) CIGARETTE MEDICINE FILTER
US5622190A (en) Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core
EP0608047B1 (en) Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core
US4924888A (en) Smoking article
CA1171747A (en) Low delivery cigarette
US4941485A (en) Cigarette
US5327916A (en) Filter tip cagarette
US5746230A (en) Concentric smoking filter having discrete tow and web filter media
EP0474940B1 (en) Concentric smoking filter having discrete tow and web filter media
AU603345B2 (en) Ventilated cigarette filter
US5076294A (en) Filter cigarette
EP0481596A1 (en) Filter mouthpiece for smoking articles
EP0533423A1 (en) A rod of smoking material and cigarettes made therefrom
KR100978983B1 (en) Cigarette with filter
KR100301739B1 (en) Ventilated filter cigarette
US5050622A (en) Cigarette
SK283397B6 (en) Cigarette with reduced gas phase
JPH104944A (en) Cigarette equipped with air-permeating filter or dual filtering segment and flavored with filter rolled letter paper
US5085232A (en) Cigarette
EP2712510B1 (en) Smoking article
SK283275B6 (en) Biodegradable cigarette filter
US5996587A (en) Smoking articles
EP3654785B1 (en) Wrapping paper for a smoking article
CZ289522B6 (en) Cigarette with reduced gas phase
EP0599897B1 (en) Control of cigarette smoke chemistry

Legal Events

Date Code Title Description
MM4A Patent lapsed due to non-payment of maintenance fees

Effective date: 20131113