Title: Cigarette with dual-structure filter
Application Number: 98103350 Application Date: 1998.06.16
Publication Number: 1216236 Publication Date: 1999.05.12
Approval Pub. Date: 2003.03.19 Granted Pub. Date: 2003.03.19
International Classifi-cation: A24D1/00;A24D3/04
Applicant(s) Name: Japan Tobacco Inc. Address:
Inventor(s) Name: Takaichi Yoshida;Hayato Hasebe;Kazuyo Kaneki
Attorney & Agent: zhang bengyuan
Abstract:
    A cigarette with a dual-structure filter (10) includes a dual-structure filter (11) having a first filter element (13) and a second filter element (14) arranged downstream of the first filter element (13), a tobacco rod (12) arranged upstream of the filter (11), and a tip paper (19) covering a downstream end portion of the tobacco rod (12) and a circumferential surface of the filter (11). At least one row of a plurality of holes (20) are formed in the tip paper (19) in a circumferential direction of the filter (11). An air-permeation resistance per unit length of the second filter element (14) is at least twice that of the first filter element (13). An air inflow rate from the tip paper (19) is at least 20%.
Time: 10
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