Cigarette filter unit and method for the production thereof
AssigneeBaumgartner Papiers S.A.
InventorsAlois Kupper, Serge Veluz
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Abstract
In order, when a cigarette is being smoked, to reduce, or even reverse, the tendency of the condensate-content to increase, a cigarette filter unit is proposed in which at least one partition having at least two areas of different porosities and made of a material which allows smoke to pass through it, is arranged between each two filter elements aligned axially with one another in the flow cross section of the filter unit. In this connection, a first partition area is designed in such a manner that its permeability decreases as the portion of tobacco associated with the cigarette filter unit is smoked, the tobacco smoke, passing through the said cigarette filter unit, flowing increasingly through the second partition area.
Claims25
A cigarette filter unit within which are arranged sections of different designs which alternate consecutively and are surrounded by a wrapping strip, characterized in that arranged between each two filter elements, in axial alignment with each other in the flow section of the filter unit, is at least one partition, each partition comprising at least two areas of differing porosities defined by porosity openings, the size of the porosity openings in one area having a greater cross-section than the porosity openings in another area, and each of said at least two areas made of a material which allows smoke to pass and preferably filters it.
Dependencies are inferred from the claim text.