Tobacco – Tobacco users' appliance – Supports
Patent
1977-04-20
1979-05-08
Michell, Robert W.
Tobacco
Tobacco users' appliance
Supports
106183, 560174, A24D 100, A24B 1500
Patent
active
041530640
ABSTRACT:
Cigarette filters are prepared by blooming a tow of cellulose acetate fibers, adding or spraying onto the bloomed tow from 1 to 20% by weight (based on the weight of the cellulose acetate fibers) of a plasticizer composed solely of, or comprising as one ingredient, at least one levulinic acid ester, and gathering the thus-treated bloomed tow to form a cigarette filter rod.
REFERENCES:
patent: 2004115 (1932-05-01), Izard
patent: 2008720 (1932-05-01), Lawson
patent: 3424172 (1969-01-01), Neurath
Kawamoto Junji
Sawada Hideo
Daicel LTD.
Michell Robert W.
Millin V.
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