Cigarette and cigarette filter

Details Cigarette and cigarette filter Cigarette and cigarette filter

1989-10-26

1991-12-24

Millin, V.

Tobacco

Smoke separator or treater

131334, 131341, 131342, 131336, 131344, A24D 306, A24D 316

Patent

active

050743201

ABSTRACT:
Cigarettes have filter elements which have a relatively low efficiency for filtering particulate matter of tobacco smoke and a relatively high pressure drop. Such filter elements are provided by shredding, gathering or pleating a sheet-like web of a paper which has a low air permeability and exhibits a pH above about 9. The paper used to provide the filter material of the filter elements incorporates a magnesium hydroxide filter.

REFERENCES:
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patent: 2900989 (1959-08-01), Davidson
patent: 3046994 (1962-07-01), Schur
patent: 3319630 (1967-05-01), Orrmins
patent: 3347247 (1967-10-01), Lloyd
patent: 3400723 (1968-09-01), Muller
patent: 3407820 (1968-10-01), Westcott et al.
patent: 3669126 (1972-06-01), Soussa et al.
patent: 3841338 (1974-10-01), Horsewell et al.
patent: 3900037 (1975-08-01), Horsewell et al.
patent: 4125061 (1978-11-01), Goavec
patent: 4149549 (1979-04-01), Grossman
patent: 4283186 (1981-08-01), Keith et al.
patent: 4396026 (1983-08-01), Grossman
patent: 4450847 (1984-05-01), Owens
Tobacco Encyclopedia, edited by Voges, TJI (1984), pp. 425-428.

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