Cigarettes

Details Cigarettes Cigarettes

1982-08-02

1984-10-02

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

131338, 131339, A24D 304

Patent

active

044741928

ABSTRACT:
A cigarette comprises a cigarette rod of smokable material enwrapped in a cigarette wrapper and a filter tip attached at one end of said rod by means of a tipping wrapper, which tip comprises smoke-filtration means and is provided at its periphery with at least one groove extending to the mouth end of the tip, the cigarette wrapper, at the region adjacent the tip, being depressed inwardly to provide at least one cavity which is in communication with at least one groove and that portion of the tipping wrapper which overlies the cavity permitting ingress of air into the same. The cigarette wrapper may be of heat-deformable paper and may comprise a proportion of thermoplastic fibres or filaments. The tipping wrapper may extend to the mouth end of the tip. The cavity may comprise at least one annular groove in the said cigarette rod or may be formed by a drawing down of the cross section of the rod, to provide an annular cavity, by means of an additional wrapper of heat-deformable or heat-shrink material.

REFERENCES:
patent: 4135523 (1979-01-01), Luke et al.
patent: 4380241 (1983-04-01), Horsewell et al.

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