Tobacco Smoke Filter

Abstract

The invention relates to a tobacco smoke filter which contains fibres which comprise regenerated cellulose (e.g. Lyocell) and an absorbent is introduced therein. More than one absorbent is introduced into the fibres of the tobacco smoke filter and/or the tobacco smoke filter contains an absorbent between said fibres. A higher charge of the absorbent can be obtained by means of said type of tobacco smoke filter.

1 . A tobacco smoke filter comprising:
 fibers having regenerated cellulose and incorporating adsorbent therein, wherein the tobacco smoke filter presents additional adsorbent properties selected from the group consisting of incorporating more than one adsorbent in said fibers, including adsorbent between said fibers, and combinations thereof.   
   
   
       2 . The tobacco smoke filter of  claim 1 ,
 at least some of said regenerated cellulose fibers incorporating two or more different adsorbents.   
   
   
       3 . The tobacco smoke filter of  claim 1 ,
 said adsorbent comprising two or more different adsorbents incorporated into different fibers having regenerated cellulose.   
   
   
       4 . The tobacco smoke filter of  claim 1 ,
 said regenerated cellulose fibers comprising at least one fiber species selected from the group consisting of lyocell fibers, viscose fibers, and modal fibers.   
   
   
       5 . The tobacco smoke filter of  claim 1 ,
 said regenerated cellulose fibers being present in at least one form selected from the group consisting of staple fibers, continuous filament fibers, fibrous nonwoven webs, papers, and wovens.   
   
   
       6 . The tobacco smoke filter of  claim 1 ,
 said adsorbent comprising at least one substance selected from the group consisting of activated carbons, aluminum oxides, aluminum hydroxides, mixtures of aluminum oxide and silicon oxide, aluminosilicates in oxide and/or hydroxide form, magnesium silicates, hydrotalcite, ion exchangers, ion exchanger resins, molecular sieves, silica gels, natural minerals, synthetic minerals, argillaceous earths, zeolites, bentonites, diatomaceous earth, meerschaum, and superadsorbents.   
   
   
       7 . The tobacco smoke filter of  claim 1 ,
 at least some of said regenerated cellulose fibers incorporating at least one smoke-influencing additive,   said at least one smoke-influencing additive preferably comprising at least one substance selected from the group consisting of flavor chemicals, vitamins, catalysts, and free radical scavengers.   
   
   
       8 . The tobacco smoke filter of  claim 1 ,
 wherein two or more fibrous nonwoven webs comprise said regenerated cellulose fibers,   said fibrous nonwoven webs comprising two or more different adsorbents in the regenerated cellulose fibers.   
   
   
       9 . The tobacco smoke filter of  claim 8 ,
 at least one of said adsorbents being included in a manner selected from the group consisting of between the fibers in at least one of the fibrous nonwoven webs, between fibrous nonwoven web plies, and combinations thereof.   
   
   
       10 . The tobacco smoke filter of  claim 1 ,
 said regenerated cellulose fibers being in paper raw material of a paper.   
   
   
       11 . A tobacco smoke filter comprising:
 paper comprising as paper raw material lyocell loaded with at least one adsorbent.   
   
   
       12 . The tobacco smoke filter of  claim 1 ,
 wherein the fraction of adsorbent based on the total weight of the tobacco smoke filter is in the range from 20% by weight to 90% by weight.   
   
   
       13 . A tobacco smoke filter comprising:
 a plurality of segments, with at least one of the segments having the features of  claim 1  and the segments preferably having a conjoint wrapping.   
   
   
       14 . A smoking product comprising:
 a tobacco smoke filter as claimed in  claim 1 .   
   
   
       15 . The smoking product of  claim 14 ,
 wherein the smoking product is selected from the group consisting of cigarettes, cigarillos, and filter paper sleeves.   
   
   
       16 . The tobacco smoke filter of  claim 8 ,
 said fibrous nonwoven webs being bonded together.   
   
   
       17 . The tobacco smoke filter of  claim 10 ,
 said paper being produced with additional adsorbent in the pulp.   
   
   
       18 . The tobacco smoke filter of  claim 11 ,
 wherein the paper is loaded with the at least one adsorbent up to 75% by weight of lyocell, based on the final paper.   
   
   
       19 . The tobacco smoke filter of  claim 12 ,
 wherein the fraction of adsorbent based on the total weight of the tobacco smoke filter is in the range from 50% by weight to 90% by weight.   
   
   
       20 . The tobacco smoke filter of  claim 19 ,
 wherein the fraction of adsorbent based on the total weight of the tobacco smoke filter is in the range from 50% by weight to 70% by weight.