Tobacco filters and a method of producing the same

Details Tobacco filters and a method of producing the same Tobacco filters and a method of producing the same

1996-03-20

1998-10-20

Weiss, John G.

Tobacco

Smoke separator or treater

Plural diverse elements

131345, 131331, B29C 4422

Patent

active

058232010

ABSTRACT:
A tobacco filter with a circumferential length of 17 to 27 mm is prepared by creping or embossing, with a roller of a temperature not lower than 100.degree. C., a sheet-like material comprising not less than 20% by weight of a cellulose ester component and having a web structure with a basis weight of 20 to 35 g/m.sup.2 and a density of 0.25 to 0.45 g/cm.sup.3, and wrapping up the creped or embossed material into a rod form. The cellulose ester component includes e.g. a cellulose ester short staple, a fibrillated fiber, an esterified fiber and a fiber coated with a cellulose ester. This tobacco filter shows a pressure drop of 200 to 500 mm WG, a firmness of 88% or more and a cross-sectional porosity of 2% or less provided that it has a circumferential length of 24.5 mm and a length of 10 cm.

REFERENCES:
patent: 3900037 (1975-08-01), Horsewell et al.
patent: 4085760 (1978-04-01), Toyoshima et al.
patent: 4192838 (1980-03-01), Keith et al.
patent: 4283186 (1981-08-01), Keith et al.
patent: 5150721 (1992-09-01), Lee et al.
patent: 5495860 (1996-03-01), Teufel et al.

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