Filter segments or filter for cigarettes and method for the production thereof

Abstract

A method for producing filter segments for one of multi-segment filters and filters for tobacco products. The method includes extruding a rod-shaped extrudate from a starting material, and wrapping the extrudate with at least one of a compressible and an elastic first material. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

1 - 15 . (canceled)  
     
     
         16 . A method for producing filter segments for one of multi-segment filters and filters for tobacco products comprising: 
 extruding a rod-shaped extrudate from a starting material; and    wrapping the extrudate with at least one of a compressible and an elastic first material.    
     
     
         17 . The method according to  claim 16 , further comprising: 
 heating the extrudate before the wrapping.    
     
     
         18 . The method according to  claim 17 , wherein the heating is carried out at a temperature range of 600° C. to 1000° C.  
     
     
         19 . The method according to  claim 16 , further comprising: 
 heating the extrudate by microwaves.    
     
     
         20 . The method according to  claim 16 , wherein the first material is one of impermeable to smoke and substantially impermeable to smoke at least in a longitudinal axial direction.  
     
     
         21 . The method according to  claim 16 , wherein the wrapping with the first material is carried out by at least one of: a further extrusion process, dipping in a melting bath, wrapping with a strip of the first material, and by wrapping with the first material arranged on a soft carrier strip.  
     
     
         22 . The method according to  claim 16 , wherein the first material is a hot melt adhesive.  
     
     
         23 . The method according to  claim 22 , wherein the hot melt adhesive is an ethylene vinyl acetate copolymer.  
     
     
         24 . The method according to  claim 16 , wherein the first material is one of foamed and foamable.  
     
     
         25 . The method according to  claim 16 , wherein the first material is composed of a cellulose acetate tow of high density.  
     
     
         26 . The method according to  claim 24 , wherein the cellulose acetate tow is wrapped around the extrudate transverse to a rod direction of the extrudate.  
     
     
         27 . The method according to  claim 24 , wherein the cellulose acetate tow is spirally wrapped around the extrudate transverse to a rod direction of the extrudate.  
     
     
         28 . The method according to  claim 16  further comprising: 
 wrapping the extrudate wrapped with the first material with a second material.  
 
     
     
         29 . The method according to  claim 28 , wherein the extrudate is wrapped in a rod process with at least one of the first material and the second material.  
     
     
         30 . The method according to  claim 16 , further comprising: 
 cutting the wrapped extrudate into segments of predeterminable lengths.    
     
     
         31 . At least one of a filter and filter segment for a multi-segment filter of a tobacco product produced according to the method  claim 16  comprising: 
 a core that is wrapped with at least one first wrapping material that is at least one of compressible and elastic,  
 wherein the first wrapping material is one of substantially impermeable to smoke and completely impermeable to smoke.  
 
     
     
         32 . At least one of a filter and filter segment according to  claim 31 , wherein the core is composed of an extrudate.  
     
     
         33 . At least one of a filter and filter segment for a multi-segment filter of a tobacco product produced according to the method  claim 16 .  
     
     
         34 . A tobacco product having one of a filter and filter segment for a multi-segment filter, the one of a filter and filter segment comprising: 
 an extruded core that is wrapped with at least one wrapping material that is at least one of compressible and elastic,    wherein the first wrapping material is at least substantially impermeable to smoke.    
     
     
         35 . The method according to  claim 34 , wherein the at least one wrapping material is composed of a cellulose acetate tow.