Ventilated filter cigarette

Details Ventilated filter cigarette Ventilated filter cigarette

1993-02-24

1995-06-13

Bahr, Jennifer

Tobacco

Smoke separator or treater

Plural diverse elements

131342, A24D 300, A24D 304

Patent

active

054233364

ABSTRACT:
The invention relates to a ventilated filter cigarette having a filter with three chambers, including a middle chamber containing an adsorbent. The strand-side chamber next to the middle chamber achieves a high pressure drop and a low tar retention by means of a smoke-permeable flow passage, such as a core made from smoke-permeable cellulose acetate fibers, that is enclosed by a casing made from virtually smoke-impermeable cellulose acetate fibers.

REFERENCES:
patent: 3353543 (1967-11-01), Sproull et al.
patent: 3716063 (1973-02-01), Litzinger
patent: 4246910 (1981-01-01), Rainer et al.
patent: 4874004 (1989-10-01), Borowski et al.
patent: 5103844 (1992-04-01), Hayden et al.

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