Tobacco smoke filter materials, fibrous cellulose esters, and pr

Details Tobacco smoke filter materials, fibrous cellulose esters, and pr Tobacco smoke filter materials, fibrous cellulose esters, and pr

1995-10-20

1997-12-02

Bahr, Jennifer

Tobacco

Smoke separator or treater

Including a cellulose ester or ether

131331, A24D 300

Patent

active

056925271

ABSTRACT:
A tobacco smoke filter material has a fibrillated cellulose ester fiber with an average fiber diameter of 15 to 250 .mu.m and a BET specific surface area of 0.5 to 4.5 m.sup.2 /g. The fibrous cellulose ester content of the material may for example be not less than 20 weight %. The cellulose ester fiber is provided by, for example, extruding a cellulose ester solution from a nozzle into a precipitating agent for the particular cellulose ester and subjecting the extrudate to a shear force. This filter material can be used in the form of, for example, a filament, web or sheet to provide a tobacco smoke filter which assures good smoking qualities and excellent wet disintegratability.

REFERENCES:
patent: 5150723 (1992-09-01), Lee et al.
patent: 5509430 (1996-04-01), Berger

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