Filter element
AssigneeBiotec Biologische Naturverpackungen GmbH & Co. KG
InventorHarald Schmidt
Life of this patent
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Abstract
The aim of the invention is to obtain filter tows or filtering materials for manufacturing filters for smoking products which make it possible to prevent or at least reduce health risks due to the release of the filter components and external contamination of cigarettes by filter components. According to the invention, a filter element is manufactured of starch and/or a mixture of a starch-based polymer and eventually incorporated activated-carbon layers and provided with pores and/or channels. The filter particles eventually adherent to such filtering materials or released during cigarette smoking can be dissolved in a corresponding moisture-containing environment. They do not come into consideration for health-damaging effects.
Claims12
A filter element for manufacturing tobacco smoke filters comprising a filtering material which substantially contains starch and/or a starch-based polymer mixture and comprises pores and/or filter channels being open in the direction of the gas flow, characterized in that the filtering material is arranged in alternatingly succeeding layers consisting of starch and/or a starch-based polymer mixture and activated carbon (21) and the layers are stacked transversely with respect to the direction of the gas flow.
Dependencies are inferred from the claim text.