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

1997-03-10

1999-01-26

Edwards, Newton

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Staple length fiber

428393, 264187, D02G 300, D01F 200

Patent

active

058636528

ABSTRACT:
A tobacco smoke filter material comprises 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: 5071599 (1991-12-01), McNair, Jr.

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