FR2114696A5 - Cigarette filter - contg an extruded element of expanded open celled thermoplastic resin - Google Patents

Cigarette filter - contg an extruded element of expanded open celled thermoplastic resin

Info

Publication number
FR2114696A5
FR2114696A5 FR7140766A FR7140766A FR2114696A5 FR 2114696 A5 FR2114696 A5 FR 2114696A5 FR 7140766 A FR7140766 A FR 7140766A FR 7140766 A FR7140766 A FR 7140766A FR 2114696 A5 FR2114696 A5 FR 2114696A5
Authority
FR
France
Prior art keywords
open celled
cigarette filter
contg
thermoplastic resin
expanded open
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
FR7140766A
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.)
Monsanto Chemicals Ltd
Original Assignee
Monsanto Chemicals 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 Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Application granted granted Critical
Publication of FR2114696A5 publication Critical patent/FR2114696A5/en
Expired 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
    • C08J9/04—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
    • 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
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment

Abstract

Cigarette filter contains an extruder element of foamed open celled resin (thermoplastic HD polyethylene or polypropylene) having the same section as the cigarette and a microstructure giving the filter a hardness coefficient >50% pressure loss 15g/cm2 and tar filtration yield >20%. Foam density is 0.015-0.1 g/cm3 and specific area is 10-80 m2/g. The microstructure contains gaps bridged by strands (0.1-2 microns) of fibre (about 100 per gap) forming a network. The resin is softened at 130-150 degrees C and expanded with 0.2 mole of foaming agent (lower hydrocarbon) per 100g product.
FR7140766A 1970-11-18 1971-11-15 Cigarette filter - contg an extruded element of expanded open celled thermoplastic resin Expired FR2114696A5 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB5480670 1970-11-18
GB5870070 1970-12-10
GB964671 1971-04-16

Publications (1)

Publication Number Publication Date
FR2114696A5 true FR2114696A5 (en) 1972-06-30

Family

ID=27255404

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7140766A Expired FR2114696A5 (en) 1970-11-18 1971-11-15 Cigarette filter - contg an extruded element of expanded open celled thermoplastic resin

Country Status (13)

Country Link
JP (2) JPS577172B1 (en)
AT (1) AT315709B (en)
BE (1) BE775476A (en)
CH (1) CH546543A (en)
DE (1) DE2156375C3 (en)
DK (1) DK133125C (en)
FR (1) FR2114696A5 (en)
IE (1) IE36798B1 (en)
IL (1) IL38123A (en)
IT (1) IT950514B (en)
NL (1) NL170916C (en)
NO (1) NO133088C (en)
SE (1) SE400457B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070861A2 (en) * 2000-03-17 2001-09-27 Dow Global Technologies Inc. Polyolefin foam for sound and thermal insulation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1482216A (en) * 1974-04-11 1977-08-10 Monsanto Ltd Cigarette filters
WO2020153490A1 (en) * 2019-01-25 2020-07-30 日本たばこ産業株式会社 Filter for smoking article

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2972554A (en) * 1955-05-23 1961-02-21 Fiber Bond Corp Pad and method of making same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070861A2 (en) * 2000-03-17 2001-09-27 Dow Global Technologies Inc. Polyolefin foam for sound and thermal insulation
WO2001070861A3 (en) * 2000-03-17 2003-08-14 Dow Global Technologies Inc Polyolefin foam for sound and thermal insulation
CN100417679C (en) * 2000-03-17 2008-09-10 陶氏环球技术公司 Polyolefin foam useful for sound and thermal insulation

Also Published As

Publication number Publication date
DK133125C (en) 1976-08-30
DK133125B (en) 1976-03-29
SE400457B (en) 1978-04-03
IE36798L (en) 1972-05-18
DE2156375C3 (en) 1981-02-19
NL7115391A (en) 1972-05-23
IT950514B (en) 1973-06-20
AU3563971A (en) 1973-05-17
NO133088B (en) 1975-12-01
BE775476A (en) 1972-05-17
NL170916C (en) 1983-01-17
NO133088C (en) 1976-03-10
JPS5411299A (en) 1979-01-27
DE2156375B2 (en) 1980-05-29
IE36798B1 (en) 1977-03-02
CH546543A (en) 1974-03-15
JPS577172B1 (en) 1982-02-09
IL38123A0 (en) 1972-01-27
AT315709B (en) 1974-06-10
IL38123A (en) 1975-03-13
DE2156375A1 (en) 1972-05-31
NL170916B (en) 1982-08-16

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse