Smoking product filter and smoking product comprising same

Abstract

The present invention provides a smoking product filter and a smoking product comprising same, the filter comprising at least two filter parts, wherein at least one of two or more filter parts includes 2-4 holes.

1 . A smoking article filter, comprising:
 two or more filter portions,   wherein at least one filter portion among the two or more filter portions comprises two to four holes.   
     
     
         2 . The smoking article filter of  claim 1 , wherein the at least one filter portion comprises three holes. 
     
     
         3 . The smoking article filter of  claim 1 , wherein a diameter of the holes is greater than or equal to 1 millimeter (mm) and less than or equal to 2 mm. 
     
     
         4 . The smoking article filter of  claim 1 , wherein a shortest distance from an outer wall of the smoking article filter to a hole is greater than or equal to 0.7 mm and less than or equal to 1.3 mm. 
     
     
         5 . The smoking article filter of  claim 1 , wherein the smoking article filter has a total length of 25 to 30 mm. 
     
     
         6 . The smoking article filter of  claim 1 , wherein
 the filter portions comprise a first filter portion disposed at a mouth end and a second filter portion disposed at a tobacco end, and   the first filter portion comprises multiple holes.   
     
     
         7 . The smoking article filter of  claim 6 , wherein
 the first filter portion has a length of 5 to 12 mm, and   the second filter portion has a length of 15 to 22 mm.   
     
     
         8 . The smoking article filter of  claim 6 , wherein the first filter portion is a cellulose filter or a polymer molded filter. 
     
     
         9 . The smoking article filter of  claim 6 , wherein
 a perforation is disposed in the second filter portion, and   filter wrapping paper of the second filter portion is porous.   
     
     
         10 . The smoking article filter of  claim 1 , wherein a circumference of the smoking article filter is greater than or equal to 15 mm and less than or equal to 25 mm. 
     
     
         11 . The smoking article filter of  claim 1 , wherein a draw resistance of the filter portions is greater than or equal to 50 mmH 2 O/Tip and less than or equal to 150 mmH 2 O/Tip. 
     
     
         12 . A smoking article including the smoking article filter of  claim 1 . 
     
     
         13 . The smoking article of  claim 12 , wherein the smoking article is a combustion-type cigarette or a heating-type cigarette.