Method of forming cigarette filter material

Details Method of forming cigarette filter material Method of forming cigarette filter material

1978-08-28

1981-08-11

Ball, Michael W.

Manufacturing container or tube from paper; or other manufacturi

Cigarette filter making

With shaping or compacting of filter material

131345, 156201, 493 50, B01D 2700

Patent

active

042831865

ABSTRACT:
A non-woven cellulose ester fibrous filter sheet material comprising cellulose ester staple fibers and cellulose ester fibrets which exhibits improved filtration properties and the method of its preparation.

REFERENCES:
patent: 2887429 (1959-05-01), Griggs et al.
patent: 2999788 (1961-09-01), Morgan
patent: 3180911 (1965-04-01), Muller
patent: 3196037 (1965-07-01), Yarsley et al.
patent: 3342921 (1967-09-01), Brundise et al.
patent: 3396061 (1968-08-01), Browne
patent: 3420245 (1969-01-01), Kiefer et al.
patent: 3961007 (1976-06-01), Caputi, Jr. et al.
patent: 4040856 (1977-08-01), Litzinger
patent: 4047862 (1977-09-01), Keith

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