Filter cigarette

Tobacco – Smoke separator or treater – By adding constituent to smoke stream

Patent

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Details

1311982, A24B 304

Patent

active

045275734

ABSTRACT:
A filter cigarette is provided which is adjustable to provide a wide range of air dilution values and which comprises a tobacco rod, a wrapped substantially cylindrical filter plug, and air transmissive tipping paper. The filter plug comprises a first mouth-end segment and a second, axially aligned, abutting rod-end segment which are joined such that the first segment is rotatable about the common axis. The second segment abuts and is joined to the tobacco rod. The wrapping is substantially air impermeable and has a plurality of first longitudinally extending, substantially air impermeable depressions spaced about the circumference of the first segment which are registrable with corresponding second, longitudinally extending, substantially air impermeable depressions spaced about the circumference of the second segment, such that as the first segment is rotated relative to the second segment, the degree of registry of the first and second depressions varies, thereby admitting varying amounts of air to the filter.

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