GB1339496A - Production of tobacco-smoke filters - Google Patents

Production of tobacco-smoke filters

Info

Publication number
GB1339496A
GB1339496A GB669471A GB1339496DA GB1339496A GB 1339496 A GB1339496 A GB 1339496A GB 669471 A GB669471 A GB 669471A GB 1339496D A GB1339496D A GB 1339496DA GB 1339496 A GB1339496 A GB 1339496A
Authority
GB
United Kingdom
Prior art keywords
drum
spikes
needles
tow
tobacco
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
GB669471A
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 GB1339496A publication Critical patent/GB1339496A/en
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
    • A24D3/0204—Preliminary operations before the filter rod forming process, e.g. crimping, blooming

Abstract

1339496 Opening tows; filter rods BRITISH AMERICAN TOBACCO CO Ltd 24 Feb 1972 [12 March 1971] 6694/71 Heading D1F [Also in Division A2] A method of producing a tobacco-smoke filter material from a tow of fibrillated fibres obtained from a split film or fibres of thermoplastics material e.g. polyolefin film, comprises spreading the tow/and subjecting it to a stripping action by passing it over a drum 6 provided with spikes or needles 7. The tow preferably passes through two air-spreader boxes 2, 4 associated with a pair of driven nip rolls 3 one at least of which is resiliently loaded, then over centring guides 5, the drum 6, or tension control roller 8, a further pair of driven, resiliently loaded nip rolls 9, and is then fed via rolls 10 to a filter rod forming machine 11. The spikes or needles 7 are raked in a rearward direction relative to the rotation direction of the drum, and serve to break the interconnections in the web-like fibrillated material. The spikes or needles 7 are arranged in rows extending longitudinally of the drum, the spikes or needles of successive rows being offset longitudinally of the drum. The tow may be crimped before or after the action of the stripping drum, e.g. by gear crimpers or stuffer box crimper.
GB669471A 1971-03-12 1972-02-24 Production of tobacco-smoke filters Expired GB1339496A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB669471 1971-03-12

Publications (1)

Publication Number Publication Date
GB1339496A true GB1339496A (en) 1973-12-05

Family

ID=9819110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB669471A Expired GB1339496A (en) 1971-03-12 1972-02-24 Production of tobacco-smoke filters

Country Status (10)

Country Link
AU (1) AU459992B2 (en)
BE (1) BE780529A (en)
BR (1) BR7201389D0 (en)
CA (1) CA990606A (en)
CH (1) CH547612A (en)
DE (1) DE2210928C2 (en)
FI (1) FI54852C (en)
GB (1) GB1339496A (en)
NL (1) NL7202975A (en)
ZA (1) ZA721292B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118982A (en) * 1982-02-03 1983-11-09 Molins Plc Processing tow, particularly for filter rod manufacture
US4798570A (en) * 1982-12-09 1989-01-17 Hercules Incorporated Process for preparing filter rods
US4925602A (en) * 1988-08-10 1990-05-15 Filter Materials Limited Method for improving the crimping of polyolefin filter tow
US5020198A (en) * 1988-08-10 1991-06-04 Filter Materials Ltd. Crimped textile fibers and stuffer box apparatus and methods for crimping textile fibers
US5025815A (en) * 1988-08-10 1991-06-25 Filter Materials Limited Polyolefin filter tow and method of making it
US5104367A (en) * 1988-08-10 1992-04-14 Filter Materials Limited Pinned rollers and process for manufacturing fibrillated film

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH627056A5 (en) * 1977-12-15 1981-12-31 Baumgartner Papiers Sa
CH647935A5 (en) * 1980-08-04 1985-02-28 Molins Ltd PROCESS FOR THE PRODUCTION OF A FILLING MATERIAL, MACHINE FOR IMPLEMENTING SAME, APPLICATION OF THE PROCESS AND PLANT FOR THE PRODUCTION OF A SEAL OF CIGARETTE FILTERS.

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847086A (en) * 1953-08-04 1958-08-12 Muller Paul Adolf Filtering material
US3012302A (en) * 1958-01-03 1961-12-12 Lorillard Co P Tobacco smoke filter manufacture
NL113839C (en) * 1958-05-21
US3390039A (en) * 1964-10-09 1968-06-25 Eastman Kodak Co Method and apparatus for making additive filters

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118982A (en) * 1982-02-03 1983-11-09 Molins Plc Processing tow, particularly for filter rod manufacture
US4798570A (en) * 1982-12-09 1989-01-17 Hercules Incorporated Process for preparing filter rods
US4925602A (en) * 1988-08-10 1990-05-15 Filter Materials Limited Method for improving the crimping of polyolefin filter tow
US5020198A (en) * 1988-08-10 1991-06-04 Filter Materials Ltd. Crimped textile fibers and stuffer box apparatus and methods for crimping textile fibers
US5025815A (en) * 1988-08-10 1991-06-25 Filter Materials Limited Polyolefin filter tow and method of making it
US5104367A (en) * 1988-08-10 1992-04-14 Filter Materials Limited Pinned rollers and process for manufacturing fibrillated film
US5316827A (en) * 1988-08-10 1994-05-31 Filter Materials Limited Crimped textile fibers and stuffer box apparatus and methods for crimping textile fibers

Also Published As

Publication number Publication date
FI54852B (en) 1978-12-29
ZA721292B (en) 1972-11-29
CH547612A (en) 1974-04-11
BE780529A (en) 1972-07-03
AU3950672A (en) 1973-09-06
DE2210928C2 (en) 1981-10-15
NL7202975A (en) 1972-09-14
FI54852C (en) 1979-04-10
DE2210928A1 (en) 1972-10-26
BR7201389D0 (en) 1973-12-06
AU459992B2 (en) 1975-03-17
CA990606A (en) 1976-06-08

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Legal Events

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