GB1321820A - Tobacco smoke filter - Google Patents

Tobacco smoke filter

Info

Publication number
GB1321820A
GB1321820A GB6285669A GB1321820DA GB1321820A GB 1321820 A GB1321820 A GB 1321820A GB 6285669 A GB6285669 A GB 6285669A GB 1321820D A GB1321820D A GB 1321820DA GB 1321820 A GB1321820 A GB 1321820A
Authority
GB
United Kingdom
Prior art keywords
rod
filter
section
air permeable
smoke
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
GB6285669A
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.)
Cigarette Components Ltd
Original Assignee
Cigarette Components 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 Cigarette Components Ltd filed Critical Cigarette Components Ltd
Publication of GB1321820A publication Critical patent/GB1321820A/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
    • A24D3/0275—Manufacture of tobacco smoke filters for filters with special features
    • A24D3/0283—Manufacture of tobacco smoke filters for filters with special features with means for a non-axial smoke flow

Abstract

1321820 Tobacco-smoke filter CIGARETTE COMPONENTS Ltd 22 Dec 1970 [24 Dec 1969 21 March 1970] 62856/69 and 13767/70 Heading A2C The filter comprises a tubular outer member 3 housing an air permeable rod 2 having a circumferential wall 6 of filtering material that encloses an air permeable supporting core 7, the outer surface of the wall 6 being in smokesealing engagement with the member 3 at a first longitudinal position 10 and opposed portions of its inner surface being deformed towards one another with compacted core material therebetween in smoke-sealing engagement at a second position 11 longitudinally spaced from the first, so that smoke drawn through the filter passes through the wall 6. The rod 2 is deformed to form grooves 15 in a substantially cylindrical intermediate portion 14 and to form ribs 12 at position 11 which may be cruciform (as shown) or may be in the form of a "Y". In an alternative embodiment, the filter rod has two cylindrical ends with a central section of "Y" cross-section, and the space between the central section and the outer member may be filled with granular material. In a further embodiment, the filter rod has a central cylindrical section and the two ends are of cruciform cross-section. The filtering material may be air permeable paper, bonded fibres or filaments, or porous plastics. The supporting part may be formed from a bonded cellulose acetate tow, a creped porous paper web, or fibres or filaments of thermoplastics such as polypropylene or polyethylene. A suitable apparatus (Fig. 5, not shown) is disclosed in which the filter is made by wrapping a filamentary tow (51) of cellulose acetate, that has first been sprayed with triacetin, with an elongate strip of paper (61) to which bands of adhesive have been applied and then heat deforming the resultant rod (65) to form a rod (67) comprising alternating portions of circular and cruciform cross-section. The rod (67) is then overwrapped either before or after cutting off through the centre of each portion to complete the filter.
GB6285669A 1969-12-24 1969-12-24 Tobacco smoke filter Expired GB1321820A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB6285669 1969-12-24

Publications (1)

Publication Number Publication Date
GB1321820A true GB1321820A (en) 1973-07-04

Family

ID=10488557

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6285669A Expired GB1321820A (en) 1969-12-24 1969-12-24 Tobacco smoke filter

Country Status (3)

Country Link
AR (1) AR196182A1 (en)
GB (1) GB1321820A (en)
ZA (1) ZA708146B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127273A (en) * 1982-08-18 1984-04-11 Brown & Williamson Tobacco Making ventilated cigarette filters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2127273A (en) * 1982-08-18 1984-04-11 Brown & Williamson Tobacco Making ventilated cigarette filters

Also Published As

Publication number Publication date
AR196182A1 (en) 1973-12-10
ZA708146B (en) 1971-10-27

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Legal Events

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