US 2009/0020132 A1 · FILTER CIGARETTE

Abstract

In a filter cigarette having a tobacco strand, a wrapping and a filter, the filter possesses at least one gas phase-active filter part which contains at least one gas phase-reducing substance. The gas phase-reducing substances are embedded in a filter material matrix. They are introduced in a quantity of at least 75 mg per filter and at least 5 mg/mm of the length of the gas phase-active filter part. The filter cigarette exhibits a filter ventilation of at most 30% (or of from 30% to 70%). The NFDPM value is between 4 and 10 mg/cigarette (or in the range of from 2 to 4 mg/Cigarette), as measured in accordance with ISO smoking conditions. The gas phase quotient Q1, defined as (μg of benzene per cigarette)/(mg of CO per cigarette) and measured in accordance with ISO smoking conditions, is less than 1.5, preferably less than 1.

Claims29

Dependent claims

A filter cigarette comprising:

a tobacco strand, a wrapping and a filter,
a) said filter including at least one gas phase-active filter part which contains at least one gas phase-reducing substance with the at least one gas phase-active filter part presenting a length,
b) said at least one gas phase-reducing substance being embedded in a filter material matrix,
c) said at least one gas phase-reducing substance being introduced in a quantity of at least 75 mg per filter and at least 5 mg/mm of the length of the at least one gas phase-active filter part,
d) wherein any filter ventilation exhibited by said filter cigarette is at most 30%,
e) said filter cigarette having an NFDPM value between 4 and 10 mg/cigarette, as measured in accordance with ISO smoking conditions,
f) said filter cigarette having a gas phase quotient Q1, defined as (μg of benzene per cigarette)/(mg of CO per cigarette) and measured in accordance with ISO smoking conditions, is less than 1.5.

4 more elements

Dependencies are inferred from the claim text.

Filter cigarette

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Filter cigarette

Life of this patent

Abstract

Claims29