Title: Cigarette with reduced gas phase
Application Number: 97182504 Application Date: 1997.11.13
Publication Number: 1286598 Publication Date: 2001.03.07
Approval Pub. Date: Granted Pub. Date: 2003.12.10
International Classifi-cation: A24D3/04,A24D3/10,A24D3/16
Applicant(s) Name: H.F. Address:
Inventor(s) Name: E. Mentzel
Attorney & Agent: lu xinhua
Abstract:
     The invention relates to a cigarette with a filter containing activated carbon. Said cigarette comprises a tobacco string wrapped in cirgarette paper, a double filter having a string-side part consisting of a tissue paper containing carbon, and a peripherally extending filter ventilation zone and located in the mouth-side part made of cellulose acetate. The tissue paper of the string-side filter part is a very bulky paper which contains 20 to 50 % wt microfine powdered active carbon. The ratio of condensate retention capacities of the string-side filter part to the mouth-side filter part ranges from 1 to 2. The air permeability of the cigarette paper is comprised between 40 and 100 coresta units and the filter ventilation grate is comprised between 5 and 60%.
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