Cigarette filter

Abstract

A cigarette filter has filter sections including filter materials individually wrapped with plug wrap paper, forming paper for wrapping the filter sections integrally, and tipping paper covering the forming paper so as to connect the filter sections to a cigarette section to form a cigarette, wherein activated charcoal and silica/alumina are contained as adsorbents in at least one of the filter materials and a space between the filter materials.

What is claimed is:  
     
         1 . A cigarette filter, comprising: filter sections including filter materials individually wrapped with plug wrap paper; forming paper for wrapping the filter sections integrally; and tipping paper covering the forming paper so as to connect the filter sections to a cigarette section to form a cigarette, 
 wherein activated charcoal and silica/alumina are contained as adsorbents in at least one of the filter materials and a space between the filter materials.    
     
     
         2 . The cigarette filter according to  claim 1 , wherein the plug wrap paper or the forming paper contains the activated charcoal and the silica/alumina as the adsorbents.  
     
     
         3 . The cigarette filter according to  claim 1 , wherein two filter materials are provided, and a mixture of the activated charcoal and the silica/alumina is loaded in the space between the two filter materials.  
     
     
         4 . The cigarette filter according to  claim 1 , wherein two filter materials are provided, and a mixture of the activated charcoal and the silica/alumina is dispersed in one of the filter materials.  
     
     
         5 . The cigarette filter according to  claim 1 , wherein three filter materials are provided, and the activated charcoal and the silica/alumina are individually loaded in the two spaces between the three filter materials.  
     
     
         6 . The cigarette filter according to  claim 1 , wherein three filter materials are provided, and the activated charcoal is dispersed in one filter material and the silica/alumina is dispersed in another filter material.  
     
     
         7 . A cigarette filter, comprising a cigarette holder body including filter materials arranged therein, wherein activated charcoal and silica/alumina are contained as adsorbents in at least one of the filter materials and a space between the filter materials.