Filter element for mouthpieces for use with smoking products or hnb products

Abstract

The invention relates to a filter element for mouthpieces for use in smoking products or HNB products. The filter material has a filter main part from a tow material, the tow material being formed by a plurality of individual threads from cross-linked and crimped cellulose acetate filaments. The cellulose acetate filaments have a particularly polygonal and preferably Y-shaped cross-sectional geometry, and the tow material has a mass specific surface area of less than 0.15 m2/g, more particularly less than 0.3 m2/g, and more than 0.025 m2/g.

1 . A filter element for mouthpieces for use with smoking products or HNB products, wherein the filter element has a filter body made from a tow material, whereby the tow material is formed by a plurality of individual filaments of cross-linked and crimped cellulose acetate filaments, whereby the cellulose acetate filaments in particular exhibit a polygonal and preferably Y-shaped cross-sectional geometry, and whereby the tow material has a mass-related specific surface area of less than 0.15 m 2 /g and more than 0.025 m 2 /g, and wherein the tow material of the filter body exhibits a residual crimp (RS) and a density (ρ), whereby a residual crimp-related density value A amounts to at least 0.016 mg 2 ×mm 6 , with: 
       
         
           
             
               A 
               = 
               
                 
                   ρ 
                   2 
                 
                 * 
                 
                   RS 
                   . 
                 
               
             
           
         
       
     
     
         2 . The filter element according to  claim 1 ,
 wherein the residual crimp (RS) of the tow material of the filter body does not exceed the value of 1.7, whereby the residual crimp (RS) of the tow material of the filter body is preferably between approximately 1.1 and approximately 1.7 and in particular between 1.3 and 1.7.   
     
     
         3 . The filter element according to  claim 1 , wherein the filter body exhibits a fiber weight, whereby the fiber weight of the filter body amounts to a maximum 10 mg/mm filter length. 
     
     
         4 . The filter element according to  claim 1 ,
 wherein the cellulose acetate filaments of the tow material exhibit an in particular predefined or definable uniform filament titer, particularly a predefined or definable uniform filament titer within a range of between 8 denier (8.88 dtex) and 30 denier (33.33 dtex), and preferably between 9 denier (10 dtex) and 30 denier (33.33 dtex), and more preferentially between 10 denier (11.11 dtex) and 20 denier (22.22 dtex).   
     
     
         5 . The filter element according to  claim 4 ,
 wherein a coefficient of variation of the uniform filament titer is at most 0.1 and preferably 0.05 maximum to 0.01 maximum.   
     
     
         6 . The filter element according to  claim 1 ,
 wherein the individual filaments of the tow material formed from the cellulose acetate filaments exhibit an in particular predefined or definable and preferably uniform filament titer of at least 200 denier (222 dtex) and at most 4000 denier (4.444 dtex) and preferably at least 250 denier (277 dtex) and at most 2500 denier (2.777 dtex).   
     
     
         7 . The filter element according to  claim 6 ,
 wherein a coefficient of variation of the uniform filament titer is at most 0.1 and preferably 0.05 maximum to 0.01 maximum.   
     
     
         8 . The filter element according to  claim 1 ,
 wherein the filter body is in particular realized as a filter rod and preferably with a diameter of between approximately 8 mm and approximately 5 mm and particularly a diameter of approximately 7.8 mm or approximately   5.35 mm, whereby at least part of the filter body is wrapped in a paper or paper-like material.   
     
     
         9 . The filter element according to  claim 8 ,
 wherein the filter body with the wrapping composed of paper or paper-like material has a compression depth of less than 0.90 mm and in particular less than 0.85 mm when a cylindrical test piece having a mass of 300 g and a diameter of 12 mm is placed at the front end of the filter body perpendicular to the filter body axis.   
     
     
         10 . The filter element according to  claim 8 ,
 wherein the filter body without the wrapping composed of paper or paper-like material has a compression depth of less than 0.90 mm and in particular less than 0.85 mm when a cylindrical test piece having a mass of 300 g and a diameter of 12 mm is placed at the front end of the filter body perpendicular to the filter body axis.   
     
     
         11 . The filter element according to  claim 1 ,
 wherein the cellulose acetate filaments of the individual filaments of the tow material are at least partially formed as hollow and/or tubular cellulose acetate filaments.   
     
     
         12 . The filter element according to  claim 1 ,
 wherein the hardness of the filter body is at least 80% Filtrona hardness and preferably at least 90% Filtrona hardness.   
     
     
         13 . The filter element according to  claim 1 ,
 wherein the filter body has a plasticizer exhibiting a plasticizer content between approximately 2% and approximately 15% and preferably between approximately 4% and 10%, whereby the plasticizer in particular contains triacetin, triethylene glycol diacetate and/or citric acid diethyl ester.   
     
     
         14 . The filter element according to  claim 1 ,
 wherein the tow material exhibits a total titer of between 4000 denier (4.444 dtex) and 40000 denier (44.444 dtex) and preferably between 6000 denier (6.667 dtex) and 30000 denier (33.333 dtex).