Multisegment filter of the tobacco processing industry and method for the production thereof

Abstract

The invention relates to a multi-segment filter ( 70 ) of the tobacco processing industry with at least two filter segments ( 60 - 62 ) arranged one behind the other in a longitudinally axial manner, and to a method for producing a multi-segment filter ( 70 ) of the tobacco processing industry, whereby a group of filter segments ( 60 - 62 ) is assembled and whereby the group of filter segments ( 60 - 62 ) is wrapped with a first wrapping material ( 65 ) to form a multi-segment filter ( 70 ). The multi-segment filter according to the invention is characterized in that a compressible and/or elastic first wrapping material ( 65 ) is arranged outside around the filter segments ( 60 - 62 ). The method according to the invention is characterized in that the first wrapping material ( 65 ) is compressible and/or elastic.

1 . Multi-segment filter ( 70 ) of the tobacco processing industry with at least two filter segments ( 60 - 62 ) arranged one behind the other in a longitudinally axial manner, characterized in that a compressible and/or elastic first wrapping material ( 65 ) is arranged outside around the filter segments ( 60 - 62 ).  
     
     
         2 . Multi-segment filter according to  claim 1 , characterized in that the first wrapping material ( 65 ) is essentially impermeable to smoke or completely impermeable to smoke.  
     
     
         3 . Multi-segment filter according to  claim 1 , characterized in that ventilation holes are provided in the first wrapping material ( 65 ).  
     
     
         4 . Multi-segment filter according to  claim 1 , characterized in that the first wrapping material ( 65 ) is the outermost layer of the multi-segment filter ( 70 ).  
     
     
         5 . Multi-segment filter according to  claim 1 , characterized in that a second wrapping material ( 66 ) is arranged outside around the first wrapping material ( 65 ).  
     
     
         6 . Multi-segment filter according to  claim 1 , characterized in that the first wrapping material ( 65 ) comprises a closed-pore foam.  
     
     
         7 . Multi-segment filter according to  claim 6 , characterized in that the closed-pore foam comprises a foamed ethylene vinyl acetate copolymer.  
     
     
         8 . Method for producing a multi-segment filter ( 70 ) of the tobacco processing industry, whereby a group of filter segments ( 60 - 62 ) is assembled and whereby the group of filter segments ( 60 - 62 ) is wrapped with a first wrapping material ( 65 ) to form a multi-segment filter ( 70 ), characterized in that the first wrapping material ( 65 ) is compressible and/or elastic.  
     
     
         9 . Method according to  claim 8 , characterized in that the first wrapping material ( 65 ) is impermeable to smoke or essentially impermeable to smoke.  
     
     
         10 . Method according to  claim 8  and/or  9 , characterized in that moreover in a further process step the first wrapping material ( 65 ) is wrapped with a second wrapping material ( 66 ).  
     
     
         11 . Use of a compressible and/or elastic first wrapping material ( 65 ) for wrapping a group of filter segments ( 60 - 62 ) of the tobacco processing industry to form a multi-segment filter ( 70 ).  
     
     
         12 . Use of a compressible and/or elastic first wrapping material ( 65 ) that is impermeable to smoke or essentially impermeable to smoke for wrapping a group of filter segments ( 60 - 62 ) of the tobacco processing industry to form a multi-segment filter ( 70 ).