Filter and tobacco product

Abstract

A filter for a tobacco product provided with a through hole along the axial direction, including a slit on a circumference of the filter along a circumferential direction, wherein a cross-sectional area of the through hole is changed by twisting both sides in the axial direction of the filter in relatively opposite directions along the circumferential direction with the slit as a boundary. A tobacco product further has the above filter, tip paper that wraps at least a part of the filter; and a tobacco rod including shredded tobacco and connected to the filter through the tip paper.

1 . A filter for a tobacco product provided with a through hole along the axial direction, comprising
 a slit on a circumference of the filter along a circumferential direction, wherein   a cross-sectional area of the through hole is changed by twisting both sides in the axial direction of the filter in relatively opposite directions along the circumferential direction with the slit as a boundary.   
     
     
         2 . A tobacco product comprising:
 a filter provided with a through hole along an axial direction, the filter including a slit on a circumference of the filter along a circumferential direction, wherein a cross-sectional area of the through hole is changed by twisting both sides in the axial direction of the filter in relatively opposite directions along the circumferential direction with the slit as a boundary;   tip paper that wraps at least a part of the filter; and   a tobacco rod including shredded tobacco and connected to the filter through the tip paper.   
     
     
         3 . The tobacco product according to  claim 2 , wherein
 the tip paper has a cut or a slit along the circumferential direction of the tobacco product, a portion on the tobacco rod side with respect to the cut or the slit is connected to a portion on the tobacco rod side with respect to the slit in the filter, and a portion on a mouthpiece side with respect to the cut or the slit in the tip paper is connected to a portion on the mouthpiece side with respect to the slit in the filter.   
     
     
         4 . The tobacco product according to  claim 2 , wherein
 the tip paper has a perforation on the mouthpiece side with respect to the slit of the filter.   
     
     
         5 . The tobacco product according to  claim 2 , wherein a seasoning source containing a taste component or a flavor component is held on the tobacco rod side with respect to the slit.