Method of production of a cigarette filter

Details Method of production of a cigarette filter Method of production of a cigarette filter

2005-04-20

2009-12-01

Durand, Paul R (Department: 3721)

Manufacturing container or tube from paper; or other manufacturi

Cigarette filter making

By assembling dissimilar filter materials

C493S042000, C493S048000, C131S344000

Reexamination Certificate

active

07625328

ABSTRACT:
A filter for a cigarette has an organic filtering portion defined by granules or fibres of active carbon and housed inside a cylindrical shell of plastic material; the shell is located between a portion of cellulose acetate, which is engaged orally by a user, and a cigarette portion, and has a bottom, contacting the portion of cellulose acetate and hermetically supporting a particulate trap for retaining fine particulate, and an end contacting the cigarette portion and closed by a plug of cellulose acetate.

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International Search Report in PCT/EP2005/051741 dated Jun. 16, 2005.

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