Filter element for mouthpieces, mouthpiece for use in smoking products or hnb products, and cigarette filter

Abstract

A filter element for mouthpieces for use with smoking or HNB products can include a filter body made of a tow material formed by a plurality of individual threads of cross-linked and crimped cellulose acetate filaments having a multilobal, polygonal or Y-shaped cross-sectional geometry. The cellulose acetate filaments of the tow material have a uniform filament titre, which can be predetermined or predefinable, in a range of less than or equal to 10 denier (11.1 dtex) and greater than or equal to 5 denier (5.5 dtex); and a specific fibre weight of less less than or equal to 2.5 mg per mm of filter element length and greater than or equal to 1.0 mg per mm of filter element length. The tow material has a total titre in a range of less than or equal to 10,000 denier (11.1 kdtex) and greater than or equal to 5,000 denier (5,555.5 dtex).

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 monofilaments of crosslinked and crimped cellulose acetate filaments, whereby the cellulose acetate filaments exhibit a multilobal or polygonal, optionally Y-shaped, cross-sectional geometry, wherein:
 the cellulose acetate filaments of the tow material exhibit a uniform filament titer, which is predefined or definable, in a range of from less than or equal to 10 denier (11.1 dtex) and greater than or equal to 5 denier (5.5 dtex);   the tow material has a total titer in a range of from less than or equal to 10000 denier (11.1 kdtex) and greater than or equal to 5000 denier (5555.5 dtex); and   the specific fiber weight of the cellulose acetate filaments of the tow material is less than or equal to 2.5 mg per mm of filter element length and greater than or equal to 1.0 mg per mm of filter element length.   
     
     
         2 . The filter element according to  claim 1 , wherein a coefficient of variation of the uniform total titer is at most 0.1. 
     
     
         3 . The filter element according to  claim 1 , wherein a coefficient of variation of the uniform filament titer is at most 0.1. 
     
     
         4 . The filter element according to  claim 1 , wherein the filter body is a filter rod with a diameter of between approximately 6 mm and approximately 4 mm, wherein at least part of the filter body is wrapped in a paper or paper-like material. 
     
     
         5 . The filter element according to  claim 4 , wherein the filter body with the paper or paper-like wrapping has a compression depth of less than 0.90 mm when the face end of a cylindrical test piece having a mass of 300 g and a diameter of 12 mm is seated on the filter body perpendicular to the filter body axis. 
     
     
         6 . The filter element according to  claim 4 , wherein the filter body without the paper or paper-like wrapping has a compression depth of less than 0.90 mm when the face end of a cylindrical test piece having a mass of 300 g and a diameter of 12 mm is seated on the filter body perpendicular to the filter body axis. 
     
     
         7 . The filter element according to  claim 1 , wherein at least part of the cellulose acetate filaments of the tow material's monofilaments is at least partially formed as hollow and/or tubular cellulose acetate filaments. 
     
     
         8 . The filter element according to  claim 1 , wherein the filter body hardness amounts to at least 80% Filtrona hardness and preferably at least approximately 86% Filtrona hardness. 
     
     
         9 . The filter element according to  claim 1 , wherein the filter body contains a plasticizer having a plasticizer content of between approximately 2% and approximately 15%, whereby the plasticizer comprises triacetin, triethylene glycol diacetate and/or citric acid ethyl ester. 
     
     
         10 . The filter element according to  claim 1 , 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.
 
 
     
     
         11 . The filter element according to  claim 1 , wherein the residual crimp (RS) of the filter body's tow material does not exceed the value of 3.0. 
     
     
         12 . The filter element according to  claim 1 , wherein the cellulose acetate filaments of the tow material has a tensile strength of at least 2.6 N/kden. 
     
     
         13 . A mouthpiece for use with smoking products or HNB products, wherein the mouthpiece comprises a filter element according to  claim 1 . 
     
     
         14 . The mouthpiece according to  claim 13 , wherein a capsule-shaped or capsule-like flavor release element is furthermore incorporated into the filter element. 
     
     
         15 . A cigarette filter or cigarette filter element comprising a filter element according to  claim 1 . 
     
     
         16 . The cigarette filter or cigarette filter element according to  claim 15 , wherein a capsule-shaped or capsule-like flavor release element is furthermore incorporated into the filter element.