CA1022421A - Filtres pour cigarettes - Google Patents

Filtres pour cigarettes

Info

Publication number
CA1022421A
CA1022421A CA224,371A CA224371A CA1022421A CA 1022421 A CA1022421 A CA 1022421A CA 224371 A CA224371 A CA 224371A CA 1022421 A CA1022421 A CA 1022421A
Authority
CA
Canada
Prior art keywords
cigarette filters
cigarette
filters
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
Application number
CA224,371A
Other languages
English (en)
Other versions
CA224371S (en
Inventor
Frederick J. Parker
Durgacharan Sen
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.)
Monsanto Ltd
Original Assignee
Monsanto Ltd
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
Application filed by Monsanto Ltd filed Critical Monsanto Ltd
Application granted granted Critical
Publication of CA1022421A publication Critical patent/CA1022421A/fr
Expired 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
    • A24D3/02—Manufacture of tobacco smoke filters
    • A24D3/0229—Filter rod forming processes
    • A24D3/0237—Filter rod forming processes by extrusion
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/05—Use of one or more blowing agents together
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/13—Cell size and distribution control while molding a foam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/14—Plastic and nonmetallic article shaping or treating: processes forming integral skin on a foamed product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/16—Molding foamed polypropylen articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/17—Molding a foam containing a filler
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S521/00—Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S521/908—Nucleating agent for cellular product
CA224,371A 1974-04-11 1975-04-10 Filtres pour cigarettes Expired CA1022421A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB16198/74A GB1482216A (en) 1974-04-11 1974-04-11 Cigarette filters

Publications (1)

Publication Number Publication Date
CA1022421A true CA1022421A (fr) 1977-12-13

Family

ID=10072943

Family Applications (1)

Application Number Title Priority Date Filing Date
CA224,371A Expired CA1022421A (fr) 1974-04-11 1975-04-10 Filtres pour cigarettes

Country Status (8)

Country Link
US (1) US4054550A (fr)
JP (1) JPS5318600B2 (fr)
AU (1) AU498832B2 (fr)
CA (1) CA1022421A (fr)
DE (1) DE2515136C3 (fr)
FR (1) FR2267056B1 (fr)
GB (1) GB1482216A (fr)
IT (1) IT1035240B (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4180536A (en) * 1978-03-13 1979-12-25 Celanese Corporation Process for extruding plasticized open cell foamed cellulose acetate filters
US4282890A (en) * 1978-03-13 1981-08-11 Celanese Corporation Open cell structure foamed cellulose acetate filters
JPS57197132A (en) * 1981-05-29 1982-12-03 Sumitomo Chem Co Ltd Manufacture of polypropylene foam
US4507256A (en) * 1983-05-26 1985-03-26 Eastman Kodak Company Process for foaming cellulose acetate rod
US4576769A (en) * 1984-03-29 1986-03-18 Celanese Corporation Process for extruding and sizing foamed thermoplastic cigarette filter rods
IT1189495B (it) * 1986-05-09 1988-02-04 S P T Srl Fibre sintetice a voluminosita' aumentata,procedimento per produrle e loro uso in particolare per filtri
US4961415A (en) * 1987-01-16 1990-10-09 Kimberly-Clark Corporation Controlled draft and efficiency filter element for smoking articles
GB8712617D0 (en) * 1987-05-28 1987-07-01 British American Tobacco Co Tobacco smoke filters
US4903714A (en) * 1987-08-25 1990-02-27 R. J. Reynolds Tobacco Company Smoking article with improved mouthend piece
US5286428A (en) * 1987-10-16 1994-02-15 Sekisui Kaseihin Kogyo Kabushiki Kaisha Polypropylene resin foamed sheet for thermoforming and process for producing the same
US5348795A (en) * 1992-12-09 1994-09-20 The Dow Chemical Company Process for making a dimensionally-stable open-cell polypropylene foam with organic blowing agents
US5538019A (en) * 1993-11-03 1996-07-23 Schweitzer-Mauduit International, Inc. Spunbond cigarette filter
US6395795B1 (en) 2000-09-29 2002-05-28 Ausimont Usa, Inc. Titanium dioxide nucleating agent systems for foamable polymer compositions
DE10145968B4 (de) * 2001-09-18 2004-04-15 Sartorius Ag Filtrationsmembran
US6863074B2 (en) * 2002-08-30 2005-03-08 Philip Morris Usa Inc. Cigarette filters comprising unfunctionalized porous polyaromatic resins for removing gas phase constituents from mainstream tobacco smoke
WO2015035220A1 (fr) 2013-09-05 2015-03-12 Lorillard Tobacco Company Composants de filtre, filtres, articles à fumer et procédés associés, tous pour la distribution régulée d'aérosols

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU38122A1 (fr) * 1959-01-06
US3188295A (en) * 1962-06-27 1965-06-08 Dow Chemical Co Method of foaming a thermoplastic organic polymer containing a nucleating agent and an organic bromide
US3281513A (en) * 1962-12-07 1966-10-25 Tecalemit Engineering Method of manufacturing a fluid filter
US3358695A (en) * 1962-12-18 1967-12-19 Du Pont Foams
US3310617A (en) * 1963-06-19 1967-03-21 Shell Oil Co Process for preparing uniform melt dispersion of blowing agent and polymer and its use in making foamed products
GB1050711A (fr) * 1963-10-04 1900-01-01
NL142442B (nl) * 1964-03-31 1974-06-17 Shell Int Research Werkwijze voor de vervaardiging van voorwerpen van polymeerschuim.
GB1182646A (en) * 1964-07-17 1970-02-25 Monsanto Chemicals Production of Foamed Products
DE1694899A1 (de) * 1965-12-09 1971-04-01 Salamander Chem Aktivatoren zur drucklosen Verschaeumung von Polyolefinen und der Mischpolymerisaten
DE1794360A1 (de) * 1966-09-30 1973-05-03 Hayer Dieter Dipl Chem Dr Aktivatoren zur drucklosen verschaeumung von polyolefinen und deren mischpolymerisaten
GB1148119A (en) * 1966-12-09 1969-04-10 Monsanto Chemicals Production of foamed resins
GB1218438A (en) * 1968-02-23 1971-01-06 Japan Styrene Paper Corp Improvements in or relating to the manufacture of foamed articles of thermoplastic materials
GB1221488A (en) * 1968-07-11 1971-02-03 Monsanto Chemicals Yarn production process
GB1271274A (en) * 1969-03-25 1972-04-19 Monsanto Chemicals Filtering element
US3610509A (en) * 1969-05-27 1971-10-05 Thomas W Winstead Skin-coated article formed of foamed thermoplastic material
US3861404A (en) * 1970-03-23 1975-01-21 Monsanto Chemicals Tobacco smoke filter
US3755208A (en) * 1970-10-23 1973-08-28 Haskon Inc Avoidance of cell collapse in an extrusion process for a copolymer based on a low molecular weight {60 -olefin and polar vinyl monomer
US3939849A (en) * 1970-11-18 1976-02-24 Monsanto Chemicals Limited Filter elements
AT315709B (de) * 1970-11-18 1974-06-10 Monsanto Chemicals Filterelemente
GB1341400A (en) * 1971-04-16 1973-12-19 Monsanto Chemicals Cigarette filters
JPS4848562A (fr) * 1971-10-23 1973-07-10
US3785919A (en) * 1971-11-09 1974-01-15 Du Pont Composite filament with elastomeric core and microapertured polypropylene foam sheath and process therefor
US3939237A (en) * 1971-11-19 1976-02-17 Asahi Dow, Ltd. Method of making a fluid transmitting porous tube or sheet
BE789774A (fr) * 1972-02-18 1973-02-01 Sinclair Koppers Co Procede et appareil pour la fabrication de profiles en mousse
JPS4936770A (fr) * 1972-08-11 1974-04-05

Also Published As

Publication number Publication date
DE2515136C3 (de) 1981-09-10
GB1482216A (en) 1977-08-10
FR2267056A1 (fr) 1975-11-07
DE2515136A1 (de) 1975-12-18
AU7990775A (en) 1976-10-14
FR2267056B1 (fr) 1977-04-15
AU498832B2 (en) 1979-03-29
IT1035240B (it) 1979-10-20
JPS50142800A (fr) 1975-11-17
JPS5318600B2 (fr) 1978-06-15
DE2515136B2 (de) 1980-10-16
US4054550A (en) 1977-10-18

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