Method for the production of filter structure for cigarette filt

Details Method for the production of filter structure for cigarette filt Method for the production of filter structure for cigarette filt

1976-06-01

1978-11-14

Coan, James F.

93 77FT, A24C 550

Patent

active

041250613

ABSTRACT:
The present invention relates to a method for assembling a highly efficient cigarette filter by making a new type of filter structure starting with a sheet of fiber material, this sheet being shaped as a cylindrical casing according to known geometric shaping arrangements. More particularly, according to this method there is employed a sheet of fiber material which is transversally corrugated and which acts as an absorbent with regard to the products of tobacco smoke, and, there is impressed on certain portions of this sheet a wafer relief configuration so as to obtain on this sheet two different materials, the sheet is then cut into ribbons of the same width which are gathered in the form of a pile, said pile being then geometrically shaped in a cylindrical casing of homogeneous structure.

REFERENCES:
patent: 2931748 (1960-04-01), Muller
patent: 3418890 (1968-12-01), Tachibana et al.
patent: 3518921 (1970-07-01), Muller

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