Tobacco-smoke filters

Details Tobacco-smoke filters Tobacco-smoke filters

A - Human Necessities

24

D

131/17

A24D 3/00 (2006.01) A24D 3/04 (2006.01)

Patent

CA 1078698

ABSTRACT A tobacco-smoke filter has a filter body comprising at least one intermediate section which is located between end sections, has a cross section less than that of the end sections and lies wholly within the outline of the latter sections as viewed axially of the body, and a porous wrap of sheet material which is pervous to volatile constituents of tobacco smoke and which bounds, with the said body, at least one space affording a path through which smoke can pass when the filter is in use and from which said constituents are removed from the smoke by diffusion through the said sheet material, each of the said section being made of filter material. Suitably the body is of generally cylindrical form and composed of cellulose acetate. Advantageously the intermediate section is integral with at least one end section.

290633

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