Method of making transverse flow of cigarette filters

Details Method of making transverse flow of cigarette filters Method of making transverse flow of cigarette filters

1977-10-05

1979-08-14

Hoag, W. E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

93 1C, 131267, 131268, 156193, 156194, 156219, 156250, 156242, 264148, 264157, 264293, 264294, B29C 1700, A24C 550

Patent

active

041644387

ABSTRACT:
A method of making a filtering member of cellulose acetate for cigarette filters of the transverse flow type in which a rod formed by a bunch of cellulose acetate fibres coated with plasticizing agent and surrounded by a skin or a paper cover is first cut transversely into shorter lengths at a cutting station. Then with each length in a heated state, a plurality of similar, spaced, co-linear grooves are impressed into the length along each of two diametrically opposed sides thereof as the length is carried by a conveyor arrangement from the cutting station to a processing station. The conveyor arrangement can comprise a driven train of fluted transfer drums receiving the lengths in the flutes certain of which have teeth extending along the troughs of those flutes to impress the grooves in the lengths, or can comprise a conveyor belt to receive the lengths in which the grooves are impressed by punches above and below the upper run of the belt.

REFERENCES:
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patent: 3735672 (1973-05-01), Molins et al.
patent: 3774508 (1973-11-01), Berger
patent: 3805682 (1974-04-01), Lyon et al.
patent: 3994306 (1976-11-01), Berger
patent: 4024001 (1977-05-01), Lyon et al.
patent: 4075936 (1978-02-01), Berger

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