Apparatus for treating filter material

Details Apparatus for treating filter material Apparatus for treating filter material

1980-07-16

1983-12-20

McIntosh, John P.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

118 62, 118325, 118326, 118603, 118DIG16, B05C 500, B05C 1500

Patent

active

044210558

ABSTRACT:
Apparatus for treating filter material, particularly a filter tow for forming into a cigarette filter rod, includes an applicator chamber containing a rotatable brush for spraying a fluid additive such as a plasticizer towards the tow. A pressure manifold having a permeable surface adjacent the path of the tow produces an air flow which redirects towards the tow of plasticizer not captured initially by the tow. Air supplied to the manifold passes through an air ionization region, to reduce static electricity in the chamber. Air is withdrawn from the chamber by a pump to prevent a pressure build-up which could cause loss of uncaptured plasticizer. A separator is provided for collecting any plasticizer entrained with the extracted air and for returning it to a supply tank.

REFERENCES:
patent: 349463 (1986-09-01), Sparks
patent: 1529134 (1925-03-01), Kelter
patent: 3418969 (1968-12-01), Harris
patent: 3424125 (1969-01-01), Wiggins
patent: 3529573 (1970-09-01), Baeni et al.
patent: 3572061 (1971-03-01), Hering, Jr.
patent: 3594228 (1971-07-01), Mock
patent: 3741846 (1973-06-01), Greve
patent: 3958532 (1976-05-01), Timson
patent: 4086872 (1978-05-01), Pan
patent: 4132189 (1979-01-01), Greve et al.
patent: 4313974 (1982-02-01), Greve et al.

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