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FR2423992A1 - CIGARETTE FILTER - Google Patents

CIGARETTE FILTER

Info

Publication number
FR2423992A1
FR2423992A1 FR7910781A FR7910781A FR2423992A1 FR 2423992 A1 FR2423992 A1 FR 2423992A1 FR 7910781 A FR7910781 A FR 7910781A FR 7910781 A FR7910781 A FR 7910781A FR 2423992 A1 FR2423992 A1 FR 2423992A1
Authority
FR
France
Prior art keywords
suction
passage
filter
smoke
force
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.)
Withdrawn
Application number
FR7910781A
Other languages
French (fr)
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.)
Douwe Egberts Koninklijke Tabaksfabriek Koffiebranderijen Theehandel NV
Original Assignee
Douwe Egberts Koninklijke Tabaksfabriek Koffiebranderijen Theehandel NV
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
Priority claimed from NL7804641A external-priority patent/NL7804641A/en
Priority claimed from NL7805408A external-priority patent/NL7805408A/en
Application filed by Douwe Egberts Koninklijke Tabaksfabriek Koffiebranderijen Theehandel NV filed Critical Douwe Egberts Koninklijke Tabaksfabriek Koffiebranderijen Theehandel NV
Publication of FR2423992A1 publication Critical patent/FR2423992A1/en
Withdrawn legal-status Critical Current

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
    • A24D3/04—Tobacco smoke filters characterised by their shape or structure
    • A24D3/041—Tobacco smoke filters characterised by their shape or structure with adjustable means for modifying the degree of filtration of the filter

Landscapes

  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

BOUT FILTRANT POUR CIGARETTES. IL EST CARACTERISE PAR UN PASSAGE 3 TRAVERSANT LE FILTRE SUIVANT SON AXE ET OPPOSANT A L'AIR UNE RESISTANCE TRES INFERIEURE A LA RESISTANCE DU RESTE DU FILTRE 2, ET UN DISPOSITIF 4, 5, 6 ASSURANT QUE CE PASSAGE SOIT UTILISE EN DERIVATION DU FILTRE LORSQUE L'ASPIRATION DU FUMEUR DEPASSE UNE FORCE DONNEE, DE MANIERE QUE SI LA FORCE D'ASPIRATION EST FAIBLE, LE PASSAGE RESTE FERME, TANDIS QUE SI ELLE DEPASSE UNE FORCE DONNEE, LE PASSAGE S'OUVRE EN NE PERMETTANT PAS A SA SORTIE UNE DIMINUTION SENSIBLE DU COURANT DE FUMEE, C'EST-A-DIRE UN EFFET D'ETRANGLEMENT. TANT QUE LA FORCE D'ASPIRATION DE LA FUMEE RESTE FAIBLE (ASPIRATION DITE PAR REFLEXE), LA TOTALITE OU LA QUASI-TOTALITE DE LA FUMEE PASSE PAR LE FILTRE, ALORS QU'AU COURS D'UNE ASPIRATION FORTE ET PROFONDE, LA QUASI-TOTALITE DE LA FUMEE PASSE PAR LE PASSAGE ET EST INHALEE SANS AVOIR ETE FILTREE.FILTER TIP FOR CIGARETTES. IT IS CHARACTERIZED BY A PASSAGE 3 THROUGH THE FILTER FOLLOWING ITS AXIS AND OPPOSING TO THE AIR A RESISTANCE VERY LOWER TO THE RESISTANCE OF THE REMAINDER OF THE FILTER 2, AND A DEVICE 4, 5, 6 ENSURING THAT THIS PASSAGE IS USED AS A DERIVATIVE OF THE FILTER WHEN THE SMOKER'S SUCTION EXCEEDS A GIVEN FORCE, SO THAT IF THE SUCTION FORCE IS WEAK, THE PASSAGE REMAINS CLOSED, WHILE IF IT EXCEEDS A GIVEN FORCE, THE PASSAGE OPENS WITHOUT ALLOWING ITS OUTPUT. SENSITIVE DECREASE IN SMOKE CURRENT, THAT IS, A STRENGTHENING EFFECT. WHILE THE FORCE OF SUCTION OF THE SMOKE REMAINS WEAK (SUCTION AS REFLEX), ALL OR ALMOST ALL OF THE SMOKE PASSES THROUGH THE FILTER, WHILE DURING A STRONG AND DEEP SUCTION, THE QUASI- ALL OF THE SMOKE PASSES THROUGH THE PASSAGE AND IS INHALED WITHOUT BEING FILTERED.

FR7910781A 1978-04-28 1979-04-27 CIGARETTE FILTER Withdrawn FR2423992A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7804641A NL7804641A (en) 1978-04-28 1978-04-28 Cigarette filter tip mouthpiece - has passage through filter opened by excessive suction to act as by=pass
NL7805408A NL7805408A (en) 1978-05-18 1978-05-18 Cigarette filter tip mouthpiece - has passage through filter opened by excessive suction to act as by=pass

Publications (1)

Publication Number Publication Date
FR2423992A1 true FR2423992A1 (en) 1979-11-23

Family

ID=26645413

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7910781A Withdrawn FR2423992A1 (en) 1978-04-28 1979-04-27 CIGARETTE FILTER

Country Status (9)

Country Link
AU (1) AU4627179A (en)
BE (1) BE875906A (en)
DE (1) DE2916431A1 (en)
DK (1) DK176379A (en)
FR (1) FR2423992A1 (en)
GB (1) GB2020537A (en)
IT (2) IT7921444V0 (en)
LU (1) LU81200A1 (en)
NL (1) NL7902870A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4357950A (en) * 1980-05-27 1982-11-09 American Filtrona Corporation Tobacco smoke filter having improved tar/carbon monoxide ratio
CH665756A5 (en) * 1985-05-20 1988-06-15 Tobacco Res & Dev CIGARETTE.
GB2490732A (en) * 2011-05-13 2012-11-14 British American Tobacco Co Filter for a smoking article
CN103485566B (en) * 2013-09-30 2016-01-20 沧州市华油飞达石油装备有限公司 A kind of movable barracks with venting of dust explosion function
GB201411619D0 (en) 2014-06-30 2014-08-13 British American Tobacco Co Flow control device
AR108880A1 (en) * 2016-06-27 2018-10-03 Philip Morris Products Sa ARTICLE TO SMOKE WITH ADJUSTMENT OF COMBINED VENTILATION AND FILTRATION EFFICIENCY

Also Published As

Publication number Publication date
DK176379A (en) 1979-10-29
LU81200A1 (en) 1979-11-07
NL7902870A (en) 1979-10-30
IT7922224A0 (en) 1979-04-27
DE2916431A1 (en) 1979-11-08
IT1112511B (en) 1986-01-20
BE875906A (en) 1979-10-29
GB2020537A (en) 1979-11-21
AU4627179A (en) 1980-01-03
IT7921444V0 (en) 1979-04-27

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Legal Events

Date Code Title Description
ST Notification of lapse