IE36798L - Cigarette filter. - Google Patents
Cigarette filter.Info
- Publication number
- IE36798L IE36798L IE711429A IE142971A IE36798L IE 36798 L IE36798 L IE 36798L IE 711429 A IE711429 A IE 711429A IE 142971 A IE142971 A IE 142971A IE 36798 L IE36798 L IE 36798L
- Authority
- IE
- Ireland
- Prior art keywords
- cigarette
- resin
- microstructure
- per
- filter
- Prior art date
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.
[FR2114696A5]
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5480670 | 1970-11-18 | ||
GB5870070 | 1970-12-10 | ||
GB964671 | 1971-04-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
IE36798L true IE36798L (en) | 1972-05-18 |
IE36798B1 IE36798B1 (en) | 1977-03-02 |
Family
ID=27255404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE1429/71A IE36798B1 (en) | 1970-11-18 | 1971-11-12 | Improvements in or relating to cigarette filters |
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) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1482216A (en) * | 1974-04-11 | 1977-08-10 | Monsanto Ltd | Cigarette filters |
KR20030028457A (en) * | 2000-03-17 | 2003-04-08 | 다우 글로벌 테크놀로지스 인크. | Polyolefin foam useful for sound and thermal insulation |
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)
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 |
-
1971
- 1971-11-04 AT AT949971A patent/AT315709B/en not_active IP Right Cessation
- 1971-11-09 NL NLAANVRAGE7115391,A patent/NL170916C/en not_active IP Right Cessation
- 1971-11-10 SE SE7114391A patent/SE400457B/en unknown
- 1971-11-11 IL IL38123A patent/IL38123A/en unknown
- 1971-11-12 CH CH1643371A patent/CH546543A/en not_active IP Right Cessation
- 1971-11-12 IE IE1429/71A patent/IE36798B1/en unknown
- 1971-11-12 DE DE2156375A patent/DE2156375C3/en not_active Expired
- 1971-11-15 FR FR7140766A patent/FR2114696A5/en not_active Expired
- 1971-11-17 BE BE775476A patent/BE775476A/en unknown
- 1971-11-17 DK DK565571A patent/DK133125C/en active
- 1971-11-17 IT IT54140/71A patent/IT950514B/en active
- 1971-11-17 NO NO4243/71A patent/NO133088C/no unknown
- 1971-11-18 JP JP9270871A patent/JPS577172B1/ja active Pending
-
1977
- 1977-11-09 JP JP13453277A patent/JPS5411299A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DK133125C (en) | 1976-08-30 |
DK133125B (en) | 1976-03-29 |
SE400457B (en) | 1978-04-03 |
FR2114696A5 (en) | 1972-06-30 |
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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