Capsuled adsorbent flavored filter

Abstract

A cigarette comprises a filter and a tobacco rod. The filter includes a capsule having opposite end walls with flavored adsorbent particles in the enclosure of the capsule. The end walls are perforated so that mainstream tobacco smoke passes through the capsule during the smoking process to thereby modify the characteristics of the smoke. Overall the capsule enables more exact filling of adsorbent particles and more control of flavor per cigarette.

1 . A capsule for placement in a cigarette filter comprising an enclosure having a first end wall with a surrounding side wall secured thereto, adsorbent particles packed into the enclosure, flavorant on the particles, a second end wall capping-off the side wall, and a plurality of perforations in the end walls whereby when the capsule is placed in a cigarette filter tobacco smoke passes into and through the capsule to thereby modify the characteristics of the smoke.  
   
   
       2 . A capsule as in  claim 1  wherein the particles are selected from the group consisting of carbon and APS silica gel.  
   
   
       3 . A capsule as in  claim 2  wherein the particles are spherical carbon particles.  
   
   
       4 . A capsule as in  claim 3  wherein the adsorbent spherical carbon particles comprise a combination of particles of two different sizes.  
   
   
       5 . A cigarette comprising a filter and a tobacco rod, the filter including a capsule having a first end wall with a surrounding side wall secured thereto, adsorbent particles packed into the capsule, a flavorant on the particles, a second end wall capping-off the side wall, and a plurality of perforations in the end walls whereby during smoking of the cigarette tobacco smokes passes into and through the capsule to thereby modify the characteristics of the smoke.  
   
   
       6 . A cigarette as in  claim 5  wherein the particles are selected from the group consisting of carbon and APS silica gel.  
   
   
       7 . A cigarette as in  claim 6  wherein the particles are spherical carbon particles.  
   
   
       8 . A cigarette as in  claim 7  wherein the adsorbent spherical carbon particles comprise a combination of particles of two different sizes.  
   
   
       9 . A cigarette as in  claim 5  wherein the filter has a plug-space-plug configuration with the capsule in the space and wherein the plugs on opposite ends of the capsule each comprise cellulose acetate tow.  
   
   
       10 . A method of producing a capsule for placement in a cigarette filter comprising the steps of forming an enclosure having a first end wall with a surrounding side wall secured thereto, packing adsorbent particles into the enclosure, applying flavorant onto the particles, capping-off the side wall with a second end wall, and providing perforations in the end walls whereby when the capsule is placed in a cigarette filter tobacco smoke passes into and through the capsule to thereby modify the characteristics of the smoke.  
   
   
       11 . A method as in  claim 10  wherein the particles are selected from the group consisting of carbon and APS silica gel.  
   
   
       12 . A method as in  claim 11  wherein the particles are spherical carbon particles.  
   
   
       13 . A method as in  claim 12  wherein the spherical carbon particles comprise a combination of particles of two different sizes.  
   
   
       14 . A method as in  claim 10  including the step of placing the capsule in a space within a cigarette filter.  
   
   
       15 . A method as in  claim 14  including the step of placing cellulose acetate plugs at opposite ends of the capsule.