EP0474940B2 - Concentric smoking filter having discrete tow and web filter media - Google Patents

Concentric smoking filter having discrete tow and web filter media Download PDF

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Publication number
EP0474940B2
EP0474940B2 EP90313555A EP90313555A EP0474940B2 EP 0474940 B2 EP0474940 B2 EP 0474940B2 EP 90313555 A EP90313555 A EP 90313555A EP 90313555 A EP90313555 A EP 90313555A EP 0474940 B2 EP0474940 B2 EP 0474940B2
Authority
EP
European Patent Office
Prior art keywords
filter
smoking
plug
central core
tow
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP90313555A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0474940B1 (en
EP0474940A1 (en
Inventor
Cynthia W. Arterbery
W. Timothy Callaham
Gus D. Keritsis
Morris F. White, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philip Morris Products SA
Philip Morris Products Inc
Original Assignee
Philip Morris Products SA
Philip Morris Products Inc
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=24285429&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0474940(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Philip Morris Products SA, Philip Morris Products Inc filed Critical Philip Morris Products SA
Publication of EP0474940A1 publication Critical patent/EP0474940A1/en
Application granted granted Critical
Publication of EP0474940B1 publication Critical patent/EP0474940B1/en
Publication of EP0474940B2 publication Critical patent/EP0474940B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • A24D3/08Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/04Tobacco smoke filters characterised by their shape or structure
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24DCIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06Use of materials for tobacco smoke filters
    • A24D3/16Use of materials for tobacco smoke filters of inorganic materials
    • A24D3/163Carbon

Definitions

  • filtering media other than cellulose acetate.
  • One such medium is an appropriate sheet or web material.
  • the web material which is gathered into a cylindrical plug, can be paper or any other web material, including cellulose acetate in sheet form. When such web materials are used as filters, they are frequently corrugated before being gathered. Paper webs may also be creped to improve tensile strength.
  • segment 52 is constructed like filter 12, but has a length of only 18-20 mm, while segment 53 is a 7-9 mm long plug of 2.6/42000 cellulose acetate for tow having a denier per fiber of 2.6, a total denier of 42,000, and a "Y" cross-sectional shape.
  • Total filter RTD is between about 125 mm W.G. and about 175 mm W.G., preferably about 141 mm W.G.
  • the RTD of segment 53 is between about 15 mm W.G. and about 45 mm W.G., preferably about 36 mm W.G.
  • the RTD of segment 52 is between about 85 mm W.G.
  • the cigarette also exhibited a pattern of visible deposition of filtrate on the end of the filter much more like a tow filter as opposed to a web filter, even though most of the filtrate was deposited on the web core. This is believed to be the result of the smoke being forced into core 21 as the ventilation air is introduced at holes 15, and then trying to spread back into peripheral tow layer 20 through permeable wrapper 23.
  • the filter of this invention will improve the taste of low delivery cigarettes. It is also possible that the filter of this invention may offer similar performance at higher deliveries. For example, a medium delivery cigarette may be perceived as a full-flavor cigarette.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Undergarments, Swaddling Clothes, Handkerchiefs Or Underwear Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
EP90313555A 1990-08-24 1990-12-13 Concentric smoking filter having discrete tow and web filter media Expired - Lifetime EP0474940B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US57187890A 1990-08-24 1990-08-24
US571878 1990-08-24

Publications (3)

Publication Number Publication Date
EP0474940A1 EP0474940A1 (en) 1992-03-18
EP0474940B1 EP0474940B1 (en) 1994-12-14
EP0474940B2 true EP0474940B2 (en) 1999-10-06

Family

ID=24285429

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90313555A Expired - Lifetime EP0474940B2 (en) 1990-08-24 1990-12-13 Concentric smoking filter having discrete tow and web filter media

Country Status (17)

Country Link
EP (1) EP0474940B2 (xx)
JP (1) JP2767322B2 (xx)
KR (1) KR0175139B1 (xx)
AT (1) ATE115369T1 (xx)
AU (1) AU635095B2 (xx)
CA (1) CA2031727C (xx)
DE (1) DE69015185T3 (xx)
DK (1) DK0474940T4 (xx)
ES (1) ES2066157T5 (xx)
FI (1) FI94385C (xx)
GR (2) GR3015326T3 (xx)
HK (1) HK162995A (xx)
HU (1) HU212772B (xx)
NO (1) NO176464C (xx)
PL (1) PL166314B1 (xx)
RU (1) RU1836040C (xx)
TR (1) TR25717A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101999755A (zh) * 2010-12-17 2011-04-06 南通烟滤嘴有限责任公司 纸芯同轴滤棒

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5622190A (en) * 1990-08-24 1997-04-22 Philip Morris Incorporated Concentric smoking filter having cellulose acetate tow periphery and carbon-particle-loaded web filter core
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
US5746230A (en) * 1990-08-24 1998-05-05 Philip Morris Incorporated Concentric smoking filter having discrete tow and web filter media
EP0638248A1 (en) * 1993-08-12 1995-02-15 Philip Morris Products Inc. Methods and apparatus to make concentric filters composed of two or more materials
GB9321536D0 (en) * 1993-10-19 1993-12-08 British American Tobacco Co Smoking articles
DE19718296B4 (de) * 1997-04-30 2006-06-29 British American Tobacco (Germany) Gmbh Ventilierte Filtercigarette mit einem koaxialen Filterelement
DE19722812C2 (de) 1997-05-30 2003-02-13 Bat Cigarettenfab Gmbh Ultraleicht-Koaxialcigarette mit mehrteiligem Filter
EE200000264A (et) * 1997-11-13 2001-06-15 H.F. & Ph.F. Reemtsma Gmbh Vähendatud gaasifaasiga sigaret
DE10009829A1 (de) * 2000-03-01 2001-09-20 Reemtsma H F & Ph Rauchartikel
GB0713905D0 (en) 2007-07-17 2007-08-29 British American Tobacco Co Cellulose acetate thread in filter
GB0811552D0 (en) * 2008-06-24 2008-07-30 British American Tobacco Co Filter for a smoking article
GB0816933D0 (en) * 2008-09-16 2008-10-22 British American Tobacco Co Filter for a smoking article
LT2978327T (lt) 2013-03-28 2019-02-11 Philip Morris Products S.A. Rūkymo gaminys, apimantis aromatą tiekiantį elementą
CN104188106A (zh) * 2014-08-28 2014-12-10 云南中烟工业有限责任公司 一种高截留效率的卷烟滤嘴及应用
JP6833996B2 (ja) * 2017-06-19 2021-02-24 日本たばこ産業株式会社 喫煙物品用フィルタおよびその製造方法
KR102391290B1 (ko) * 2020-04-22 2022-04-26 주식회사 케이티앤지 흡연 물품용 마우스피스 및 이를 포함하는 흡연 물품 조립체와 흡연 물품 패키지

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3396061A (en) * 1964-06-01 1968-08-06 Celanese Corp Smoke filters
US4034765A (en) * 1975-10-30 1977-07-12 Liggett & Myers Incorporated Tobacco smoke filter
US4082098A (en) * 1976-10-28 1978-04-04 Olin Corporation Flavored cigarette
AU4119078A (en) 1977-11-18 1980-05-08 Philip Morris Inc Filter system
US4355995A (en) * 1979-03-27 1982-10-26 American Filtrona Corporation Tobacco smoke filter providing tobacco flavor enrichment, and method for producing same
US4291711A (en) * 1979-03-27 1981-09-29 American Filtrona Corporation Tobacco smoke filter providing tobacco flavor enrichment, and method for producing same
AU556902B2 (en) * 1981-12-18 1986-11-27 Cigarette Components Limited Tobacco smoke filter
DE3207683C2 (de) * 1982-03-03 1986-06-05 B.A.T. Cigaretten-Fabriken Gmbh, 2000 Hamburg Filter für einen rauchbaren Artikel
GB2119221B (en) * 1982-04-05 1986-05-29 Filtrona Ltd Cigarette filter
DE3743597C1 (de) * 1987-12-22 1989-02-16 Bat Cigarettenfab Gmbh Koaxialcigarette
DE3901226C1 (xx) * 1989-01-17 1990-07-26 B.A.T. Cigarettenfabriken Gmbh, 2000 Hamburg, De

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101999755A (zh) * 2010-12-17 2011-04-06 南通烟滤嘴有限责任公司 纸芯同轴滤棒

Also Published As

Publication number Publication date
HU908366D0 (en) 1991-07-29
PL288311A1 (en) 1992-02-24
JPH06269270A (ja) 1994-09-27
AU6774890A (en) 1992-02-27
NO176464C (no) 1995-04-12
DK0474940T4 (da) 2000-04-03
DE69015185D1 (de) 1995-01-26
DE69015185T3 (de) 2000-03-09
GR3015326T3 (en) 1995-06-30
NO905639D0 (no) 1990-12-28
RU1836040C (ru) 1993-08-23
AU635095B2 (en) 1993-03-11
NO905639L (no) 1992-02-25
DK0474940T3 (da) 1995-04-03
JP2767322B2 (ja) 1998-06-18
FI94385C (fi) 1995-09-11
HUT64455A (en) 1994-01-28
HK162995A (en) 1995-10-27
ES2066157T3 (es) 1995-03-01
EP0474940B1 (en) 1994-12-14
FI906092A (fi) 1992-02-25
CA2031727A1 (en) 1992-02-25
DE69015185T2 (de) 1995-05-24
TR25717A (tr) 1993-09-01
CA2031727C (en) 2001-04-10
NO176464B (no) 1995-01-02
KR0175139B1 (ko) 1999-02-18
FI94385B (fi) 1995-05-31
GR3032144T3 (en) 2000-04-27
ES2066157T5 (es) 1999-12-16
FI906092A0 (fi) 1990-12-11
EP0474940A1 (en) 1992-03-18
ATE115369T1 (de) 1994-12-15
PL166314B1 (pl) 1995-05-31
KR920003914A (ko) 1992-03-27
HU212772B (en) 1996-11-28

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