Apparatus for applying plasticizer to fibrous filter material in

Details Apparatus for applying plasticizer to fibrous filter material in Apparatus for applying plasticizer to fibrous filter material in

1972-05-19

1979-01-02

McIntosh, John P.

Coating apparatus

With vacuum or fluid pressure chamber

118 44, 118 62, 118325, 118326, 118DIG16, B05C 500

Patent

active

041321898

ABSTRACT:
A filter rod making machine wherein a continuous tow of fibrous filter material is flattened to form a foraminous layer prior to passage through an impregnating station where an atomizing nozzle or a revolving brush sprays particles of atomized plasticizer against one side of the layer. An intercepting plate is placed in contact with the layer opposite the nozzle or brush so that the particles which penetrate across the layer and reach the plate are entrained by successive increments of the layer to thus insure that each unit length of the layer contains the same quantity of plasticizer. The rate of delivery of plasticizer to the brush or nozzle is changed in automatic response to changes in forward speed of the layer.

REFERENCES:
patent: 275957 (1883-04-01), Stonemetz
patent: T874005 (1970-05-01), Fritz et al.
patent: 2736289 (1956-02-01), Allen
patent: 2775952 (1957-01-01), Schur
patent: 2844019 (1958-07-01), Schurmann et al.
patent: 2986149 (1961-05-01), Van Brakel
patent: 3209467 (1965-10-01), Taylor, Jr.
patent: 3226773 (1966-01-01), Paliyenko
patent: 3387992 (1968-06-01), Arthur et al.
patent: 3566451 (1971-03-01), Weigand
patent: 3591450 (1971-07-01), Murphy et al.

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