GB2205102B - Improvements relating to the manufacture of tobacco smoke filters - Google Patents

Improvements relating to the manufacture of tobacco smoke filters

Info

Publication number
GB2205102B
GB2205102B GB8812699A GB8812699A GB2205102B GB 2205102 B GB2205102 B GB 2205102B GB 8812699 A GB8812699 A GB 8812699A GB 8812699 A GB8812699 A GB 8812699A GB 2205102 B GB2205102 B GB 2205102B
Authority
GB
United Kingdom
Prior art keywords
manufacture
tobacco smoke
improvements relating
smoke filters
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 - Lifetime
Application number
GB8812699A
Other versions
GB2205102A (en
GB8812699D0 (en
Inventor
John Anthony Luke
William John Stone
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.)
British American Tobacco Investments Ltd
Original Assignee
British American Tobacco Co 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 British American Tobacco Co Ltd filed Critical British American Tobacco Co Ltd
Publication of GB8812699D0 publication Critical patent/GB8812699D0/en
Publication of GB2205102A publication Critical patent/GB2205102A/en
Application granted granted Critical
Publication of GB2205102B publication Critical patent/GB2205102B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1669—Cellular material
    • B01D39/1676—Cellular material of synthetic origin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/125—Water, e.g. hydrated salts
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2401/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacture Of Tobacco Products (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
GB8812699A 1987-05-28 1988-05-27 Improvements relating to the manufacture of tobacco smoke filters Expired - Lifetime GB2205102B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878712617A GB8712617D0 (en) 1987-05-28 1987-05-28 Tobacco smoke filters

Publications (3)

Publication Number Publication Date
GB8812699D0 GB8812699D0 (en) 1988-06-29
GB2205102A GB2205102A (en) 1988-11-30
GB2205102B true GB2205102B (en) 1991-09-18

Family

ID=10618085

Family Applications (2)

Application Number Title Priority Date Filing Date
GB878712617A Pending GB8712617D0 (en) 1987-05-28 1987-05-28 Tobacco smoke filters
GB8812699A Expired - Lifetime GB2205102B (en) 1987-05-28 1988-05-27 Improvements relating to the manufacture of tobacco smoke filters

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB878712617A Pending GB8712617D0 (en) 1987-05-28 1987-05-28 Tobacco smoke filters

Country Status (25)

Country Link
AR (1) AR245876A1 (en)
AT (1) AT397757B (en)
AU (1) AU611906B2 (en)
BE (1) BE1002913A5 (en)
BR (1) BR8802665A (en)
CA (1) CA1293098C (en)
CH (1) CH677063A5 (en)
CY (1) CY1624A (en)
DE (1) DE3817889A1 (en)
DK (1) DK171907B1 (en)
ES (1) ES2009926A6 (en)
FI (1) FI882457A (en)
FR (1) FR2615752B1 (en)
GB (2) GB8712617D0 (en)
HK (1) HK6192A (en)
IN (1) IN171503B (en)
IT (1) IT1219696B (en)
MW (1) MW1488A1 (en)
MX (1) MX168986B (en)
MY (1) MY102752A (en)
NL (1) NL8801356A (en)
NZ (1) NZ224797A (en)
SG (1) SG97291G (en)
ZA (1) ZA883697B (en)
ZW (1) ZW6988A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5523036A (en) * 1987-05-28 1996-06-04 British-American Tobacco Company Limited Methods of making tobacco smoke filter elements
US5095054A (en) * 1988-02-03 1992-03-10 Warner-Lambert Company Polymer compositions containing destructurized starch
US5022964A (en) * 1989-06-06 1991-06-11 The Dexter Corporation Nonwoven fibrous web for tobacco filter
AT396862B (en) * 1991-10-22 1993-12-27 Austria Tabakwerke Ag METHOD FOR PRODUCING A CELLULOSE ACETATE CABLE AND CIGARETTE FILTER THEREOF
GB9305066D0 (en) * 1993-03-12 1993-04-28 British American Tobacco Co Improvements relating to filtration materials
GB9407715D0 (en) * 1994-04-19 1994-06-15 British American Tobacco Co Improvements relating to tobacco smoke filter elements
DE19536505A1 (en) * 1995-09-29 1997-04-10 Biotec Biolog Naturverpack Biodegradable filter material and process for its manufacture
DE10252823A1 (en) 2002-11-13 2004-06-09 Biotec Biologische Naturverpackungen Gmbh & Co. Kg filter element
US9226524B2 (en) 2010-03-26 2016-01-05 Philip Morris Usa Inc. Biopolymer foams as filters for smoking articles
CN110604961A (en) * 2019-09-16 2019-12-24 北京泽阳天成化工技术有限公司 Method and device for separating polymer in polypropylene production process

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1466027A (en) * 1974-09-13 1977-03-02 Toyo Soda Mfg Co Ltd Water-and air-permeable material
GB1502663A (en) * 1974-03-28 1978-03-01 Hayashibara Biochem Lab Foamed plastics of resin compositions comprising pullulan type resins and thermoplastic resins ans process for producing the same
EP0122460A1 (en) * 1983-03-23 1984-10-24 Chuo Kagaku Co., Ltd. Production of resin foam by aqueous medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836615A (en) * 1966-07-01 1974-09-17 Celanese Corp Method of forming cylindrical foamed cellulose rods enclosed in a rigid skin
GB1183498A (en) * 1967-10-24 1970-03-04 British American Tobacco Co Improvements relating to Tobacco-Smoke Filters
GB1279803A (en) * 1968-10-30 1972-06-28 Monsanto Chemicals Smoke-filtering elements
GB1319636A (en) * 1969-08-12 1973-06-06 British American Tobacco Co Tobacco smoke filters and filter production
US3800808A (en) * 1971-11-26 1974-04-02 Brown & Williamson Tobacco Tobacco smoke filter
GB1482216A (en) * 1974-04-11 1977-08-10 Monsanto Ltd Cigarette filters
US4180536A (en) * 1978-03-13 1979-12-25 Celanese Corporation Process for extruding plasticized open cell foamed cellulose acetate filters
US4411280A (en) * 1981-09-11 1983-10-25 Celanese Corporation Ventilated thermoplastic polymer foam filter rods

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1502663A (en) * 1974-03-28 1978-03-01 Hayashibara Biochem Lab Foamed plastics of resin compositions comprising pullulan type resins and thermoplastic resins ans process for producing the same
GB1466027A (en) * 1974-09-13 1977-03-02 Toyo Soda Mfg Co Ltd Water-and air-permeable material
EP0122460A1 (en) * 1983-03-23 1984-10-24 Chuo Kagaku Co., Ltd. Production of resin foam by aqueous medium

Also Published As

Publication number Publication date
MW1488A1 (en) 1989-01-11
ZW6988A1 (en) 1989-02-08
SG97291G (en) 1992-01-17
FR2615752B1 (en) 1992-06-19
HK6192A (en) 1992-01-17
BE1002913A5 (en) 1991-08-06
IN171503B (en) 1992-10-31
FR2615752A1 (en) 1988-12-02
MX168986B (en) 1993-06-16
CH677063A5 (en) 1991-04-15
ES2009926A6 (en) 1989-10-16
AT397757B (en) 1994-06-27
AR245876A1 (en) 1994-03-30
NZ224797A (en) 1990-04-26
FI882457A (en) 1988-11-29
IT1219696B (en) 1990-05-24
DE3817889A1 (en) 1988-12-15
GB2205102A (en) 1988-11-30
ZA883697B (en) 1989-02-22
DK287988A (en) 1988-11-29
BR8802665A (en) 1988-12-27
AU611906B2 (en) 1991-06-27
FI882457A0 (en) 1988-05-25
AU1659688A (en) 1988-12-01
DK171907B1 (en) 1997-08-11
CY1624A (en) 1992-07-10
GB8812699D0 (en) 1988-06-29
ATA138888A (en) 1993-11-15
GB8712617D0 (en) 1987-07-01
MY102752A (en) 1992-09-30
IT8820750A0 (en) 1988-05-26
CA1293098C (en) 1991-12-17
NL8801356A (en) 1988-12-16
DK287988D0 (en) 1988-05-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20000527