Filter for arranging in a cigarette tip, especially for the smoking of cigarettes freed of nicotine and harmful constituents

摘要

The subject of the invention is a filter for arranging in a cigarette tip for the smoking, in particular, of cigarettes freed from nicotine and harmful constituents, which filter, beginning at the cigarette end, has a first disc (1) with a central aperture (8) reducing the flow cross-section of the smoke to a diameter of from 2 to 6 mm, and a thickness of 0.5 to 2 mm, a micromesh (2) arranged adjacent to the first disc (1) and consisting of plastic with a fibre thickness of from 0.01 to 0.05 mm and a fibre spacing of from 0.02 to 0.1 mm, a second disc (3) adjoining the latter, having a central aperture (9) of a diameter of from 1 to 5 mm and less than that of the first disc, and a thickness of from 0.5 to 2 mm, a third disc (4) adjoining the latter and having a central aperture (10) which, at the exit side, has a diameter of greater than 2 mm and not more than 6 mm but greater than that of the aperture (9) of the second disc (3) and a thickness of from 0.5 to 2 mm, and a fibre filter (5) arranged adjacent to the third disc (4) and having a length of from 4 to 10 mm with plastic fibres substantially parallel to the general direction of flow. IMAGE