Flavorant-carrying adsorbent particle, cigarette filter, filter-tipped cigarette, and method for producing flavorant-carrying adsorbent particle

Abstract

A flavorant-carrying adsorbent particle comprising an adsorbent core particle having a BET specific surface area of 700 m 2 /g or greater, and a flavor-generating medium carried on the surface of the adsorbent core particle and including a flavorant and a flavorant-holding material holding the flavorant, wherein the flavorant-holding material is present in an amount of 5 to 20% with respect to a total weight of the flavorant-carrying adsorbent particle, and the flavorant is present in an amount of 10 to 50% with respect to a weight of the flavorant-holding material.

What is claimed is: 
     
         1 . A flavorant-carrying adsorbent particle comprising:
 an adsorbent core particle having a BET specific surface area of 700 m 2 /g or greater, and   a flavor-generating medium carried on the surface of the adsorbent core particle and including a flavorant and a flavorant-holding material holding the flavorant,   wherein the flavorant-holding material is present in an amount of 5 to 20% with respect to a total weight of the flavorant-carrying adsorbent particle, and the flavorant is present in an amount of 10 to 50% with respect to a weight of the flavorant-holding material.   
     
     
         2 . The flavorant-carrying adsorbent particle according to  claim 1 , wherein the flavorant-carrying adsorbent particle has, in an initial state, an acetone adsorption ability of 50% or greater with respect to the intrinsic acetone adsorption ability of the adsorbent core particle. 
     
     
         3 . The flavorant-carrying adsorbent particle according to  claim 1 , wherein the flavorant-carrying adsorbent particle is produced by spraying a liquid flavor-emitting composition containing a flavorant and a flavorant-holding material onto an adsorbent core particle having a BET specific surface area of 700 m 2 /g or greater while stirring the adsorbent core particle under reduced pressure. 
     
     
         4 . A cigarette filter comprising a filter section including the flavorant-carrying adsorbent particle according to  claim 1 . 
     
     
         5 . A filter-tipped cigarette comprising a cigarette rod and the filter according to  claim 4  which is connected to one end of the cigarette rod. 
     
     
         6 . A method for producing a flavorant carrying adsorbent particle, comprising:
 spraying a liquid flavor-emitting composition containing a flavorant and a flavorant-holding material onto an adsorbent core particle having a BET specific surface area of 700 m 2 /g or greater while stirring the adsorbent core particle under reduced pressure.   
     
     
         7 . The method for producing a flavorant-carrying adsorbent particle according to  claim 6 , wherein the liquid flavor-emitting composition contains the flavorant-holding material in an amount of 5 to 20% with respect to a total weight of the flavorant-carrying adsorbent particle, and the flavorant in an amount of 10 to 50% with respect to a weight of the flavorant-holding material. 
     
     
         8 . The method for producing a flavorant-carrying adsorbent particle according to  claim 6 , wherein the reduced pressure is a pressure of 12.3 kPa or lower. 
     
     
         9 . The method for producing a flavorant-carrying adsorbent particle according to  claim 6 , wherein the adsorbent core particle is maintained at a temperature of 60° C. or lower during the spraying.