Cigarette filter

Details Cigarette filter Cigarette filter

1980-12-05

1982-07-13

Millin, V.

Tobacco

Smoke separator or treater

By adding constituent to smoke stream

131339, 131340, 131361, 131362, 131365, A24D 304

Patent

active

043389562

ABSTRACT:
A filter for a cigarette includes a porous filter rod circumscribed by a smoke impervious wrapper wherein the filter rod with the smoke impervious wrapper therearound is provided with grooves embedded therein and extending from one end thereof a preselected distance longitudinally therealong. Tipping material circumscribes the smoke impervious wrapper and is provided with flow-through openings therein in flow communication with the grooves. Support means are provided for the tipping material at the mouth end of the filter to maintain the tipping material in circumferential equalization.

REFERENCES:
patent: 3490461 (1970-01-01), Osmalov et al.
patent: 3607512 (1971-09-01), Mathe
patent: 3910288 (1975-10-01), Hammersmith et al.

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