Filter for the sorption of components of tobacco smoke which are harmful to health
AssigneeESS Holding GmbH
InventorsAlireza Eslamian, Martin Schifko, Mehdi Salimi
Life of this patent
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Abstract
A filter for sorption of components of tobacco smoke which are harmful to health comprises ceramic particles bonded to form a porous structure (12). In order to avoid contamination within a short period of time even when the filter is not properly disposed of, and without causing a loss in sorption or in the smoking sensation, the filter has decreasing water solubility from a tobacco-side portion (1) to an opposite mouth-side portion (2).
Claims18
A filter for sorption of components of tobacco smoke that are harmful to health, said filter comprising:
- ceramic particles bonded to form a porous structure;
- wherein the filter has decreasing water solubility from a tobacco-side portion to an opposite mouth-side portion.
A method for producing a filter for sorption of tobacco smoke, said method comprising:
- filling successively mutually different mixtures comprising ceramic particles, placeholder particles and water-soluble binder into a mold;
- and
- pressing and heating contents of the mold so as to decompose the place-holder particles and to bond the ceramic particles so as to form a porous structure.
A method for the continuous production of a filter for the sorption of tobacco smoke, said method comprising:
- initially introducing mixtures differing from one another and comprising ceramic particles, placeholder particles and water-soluble binder into a continuous casting mold through at least two inlet channels that extend into one another at a distance and are arranged coaxially with one another and with respect to the continuous casting mold;
- varying inlet velocities of the mixtures differing from one another in the respective inlet channels in a radial and/or axial direction of the filter so as to adjust water solubility and/or the porosity of the filter, and then
- fractionating and heating the continuous casting mold contents are so as to decompose the placeholder particles and bind the ceramic particles so as to form the porous structure of said bound ceramic particles.
Dependencies are inferred from the claim text.