Cigarette filter construction

Claim 2

A cigarette filter comprising a wrapped high gas permeability plug of substantially longitudinally aligned, crimped, continuous cellulose acetate filaments having a total denier of approximately 20,000-40,000 with the individual filaments having a denier of from 2 to 30, said plug being in contact with a low gas permeability disc formed of a highly compacted stereoreticulate mass of fibers, said disc manifesting a pressure drop of approximately 20-40 mm. of H2O, the disc having a diameter which is 5-25 percent less than that of the plug and so oriented within the wrapper as to provide an unobstructed annular smoke path therearound.

Claim 3

The cigarette filter of claim 1 in which the fibers of the stereo-reticulate mass are selected from the group consisting of cellulosic, glass and polyolefin fibers - The ''''Abstract of the Disclosure'''' has been changed to read: A cigarette filter is disclosed which is composed of two major elements, that is, a plug of longitudinally arranged crimped and continuous cellulose acetate filaments of 20,000-40,000 denier and secondly a compacted fiber disc which either abuts one end of the plug or is disposed within the body thereof. The disc is composed of a stereo-reticulate compacted mass of natural or synthetic fibers such as cellulose, glass or polyolefin fibers and manifests a pressure drop of preferably between 20-40 mm. of H2O. The disc is of a diameter which is 5 to 25 percent less than the diameter of the plug and so oriented as to provide an unobstructed annular smoke passage therearound.