Tobacco – Smoke separator or treater – By adding constituent to smoke stream
Patent
1986-10-17
1989-02-28
Millin, V.
Tobacco
Smoke separator or treater
By adding constituent to smoke stream
131340, 131344, A24D 302, A24D 304
Patent
active
048076473
ABSTRACT:
A cigarette filter comprising longitudinally aligned core components a first of which is air-permeable and of relatively high pressure drop longitudinally of the filter but substantially air-impermeable radially of the filter and a second of which is air-permeable and of relatively low pressure drop longitudinally of the filter, and a common wrap or partial wrap which extends along and around or partially around said core components and provides for ventilation of the filter at a region longitudinally spaced from the first core component.
REFERENCES:
patent: 4570649 (1986-02-01), Nichols et al.
Cigarette Components Limited
Millin V.
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