Manufacture of tobacco smoke filters

Tobacco – Smoke separator or treater – Plural diverse elements

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Details

131335, 131341, 131342, 131343, 131346, 493 46, 493 47, 493 49, A24D 302, A24D 304

Patent

active

047701935

ABSTRACT:
A smoke filter and a method for manufacturing the filter from a continuous multifilament filter tow are described in which a portion of the filter tow is treated with a dye to impart color to a discrete elongated zone of dye-treated filaments that is in substantial alignment with the longitudinal axis of the smoke filter.

REFERENCES:
patent: 3288150 (1966-11-01), Burke et al.
patent: 3396061 (1968-08-01), Browne
patent: 4281671 (1981-08-01), Byrne et al.
patent: 4291711 (1981-09-01), Berger

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