Tobacco – Smoke separator or treater
Patent
1995-10-31
1997-10-21
Bahr, Jennifer
Tobacco
Smoke separator or treater
B01D 2700
Patent
active
056785771
ABSTRACT:
A tobacco filter is produced by wrapping up a sheet-like filter material having a web structure and comprising a cellulose ester short staple into a rod-form. As the cellulose ester short staple, a short staple that is non-crimped and/or has a modified cross section where a ratio D1/D2 of a diameter D1 of the circumscribed circle to a diameter D2 of the inscribed circle, each circle being of the cross section, of not less than 2 is used. The short staple includes e.g. a cellulose acetate fiber with an average fiber length of 1 to 10 mm and fineness of 1 to 10 deniers. The short staple may be incorporated with a beaten pulp with a Schopper-Riegler freeness of 20 to 90.degree. SR and/or a binder. The ratio of the short staple to the beaten pulp may for example be about 90/10 to 20/80 (by weight).
REFERENCES:
patent: 4283186 (1981-08-01), Keith et al.
patent: 5365951 (1994-11-01), Arterbery et al.
Matsumura Hiroyuki
Shibata Tohru
Shimamoto Syu
Bahr Jennifer
Daicel Chemical Industries Ltd.
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