Tobacco smoke filter having improved tar/carbon monoxide ratio

Details Tobacco smoke filter having improved tar/carbon monoxide ratio Tobacco smoke filter having improved tar/carbon monoxide ratio

A - Human Necessities

24

D

131/17

A24D 3/00 (2006.01)

Patent

CA 1159742

ABSTRACT OF THE DISCLOSURE A tobacco smoke filter having an improved tar/carbon monoxide ratio is disclosed. The filter is obtained by sealing off the center portion of the filter with an inner member which is impermeable to the passage of smoke, thus directing all of the smoke to the periphery of the filter. In one embodiment, the inner member is formed as a thin walled tube of a material such as polypropylene, with the tube being crimped to seal one end of the tube. The crimped tube is then overwrapped with a smoke permeable material

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