公开(公告)号：US20180000152A1

公开(公告)日：2018-01-04

申请号：US15702410

申请日：2017-09-12

Applicant: JAPAN TOBACCO INC.

Inventor： Kenji ITO ,  Yu NINOMIYA ,  Tomiharu NAGATA ,  Hiroyuki TORAI ,  Sadao OGI ,  Kazumasa ARAE

IPC: A24D3/04

Abstract: The filter for cigarette product includes a mouthpiece end side-filter material and a front stage-filter material. The mouthpiece end side-filter material has a low air flow-resistance unit that is arranged in a part of a cross section from a front end surface to a rear end surface and having a relatively low air flow-resistance, and a high air flow-resistance unit that is arranged in the remainder of the cross section from the front end surface to the rear end surface and having a higher air flow-resistance than the low air flow-resistance unit. At least on the rear end surface of the mouthpiece end side-filter material, the low air flow-resistance unit is arranged only in one semicircular area, of two parts into which the cross section of the mouthpiece end side-filter material is divided.