A - Human Necessities – 24 – D
Patent
A - Human Necessities
24
D
A24D 1/00 (2006.01) A24D 3/04 (2006.01)
Patent
CA 2074300
In a coaxial cigarette comprising a rod portion having an inner core of a material smouldering substantially without residue, a sheath for the inner core, an outer jacket coaxially surrounding the inner core and its sheath, a sheath for the outer jacket and a filter portion, even whilst dispensing with special papers provided with special additives the secondary smoke is effected solely by the characteristics of a special coaxial rod type, the packing density of the inner core being greater than the packing density of the outer jacket, the draw resistance per unit length with respect to the packing density being greater in the inner core than in the outer jacket, the air permeability of the sheath of the inner core being less than the air permeability of the sheath of the outer jacket and the filter portion having a filter ventilation degree of at least 30 % and a retention degree of at least 40 %.
Muller Bernd-Henrik
Rudolph Gert
Schneider Werner
British-American Tobacco (germany) Gmbh
Macrae & Co.
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