Smoking article mouthpieces

Details Smoking article mouthpieces Smoking article mouthpieces

1986-03-03

1990-03-27

Millin, V.

Manufacturing container or tube from paper; or other manufacturi

Cigarette filter making

With shaping or compacting of filter material

493 43, 131336, A24C 550, A24D 304

Patent

active

049116843

ABSTRACT:
A method of making a ventilated cigarette filter plug in which a bore is thermally formed, by a laser beam for example, in a rod comprising a duct extending coaxially of the rod and matrix material surrounding the duct. The thermally formed bore extends through the matrix material to provide air-flow communication between the periphery of the rod and the interior of the duct.

REFERENCES:
patent: 2958328 (1960-11-01), Bartolomeo
patent: 3045680 (1962-07-01), Smith
patent: 3124143 (1964-03-01), Bartolomeo
patent: 3389705 (1968-06-01), Levavi
patent: 3678941 (1972-07-01), Dixon
patent: 4149546 (1979-04-01), Luke et al.
patent: 4273141 (1981-06-01), Van Tilburg
patent: 4388934 (1983-06-01), Luke
patent: 4525161 (1985-06-01), Luke

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