from acetate formed structure, their use for the production of filtertow, use of the filtertows to manufacture a tabakrauchfilterelements and filtertow and tabakrauchfilterelement

摘要

Described are shaped cellulose acetate articles within which or on whose surface is present an additive, said additive consisting of a nitrogen-containing organic compound whose degradation through microorganisms gives rise to basic decomposition products, in particular ammonia and/or basic compounds having an NH group or NH groups and/or an NH2 group or NH2 groups. The articles can have the shape of filaments, fibres, films, sheets, plates or other structures. The invention also relates to the use of the articles in the form of filaments and/or fibres for the manufacture of filter tow, to such a filter tow and to the use of such a filter tow for manufacturing a tobacco smoke filter element and to such a tobacco smoke filter element. The articles, the filter tow and the tobacco smoke filter element of the invention show improved biodegradation under the action of environmental influences, but the filter tow and the tobacco smoke filter element can be stored under the conditions customary today without risk of microbiological degradation.