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

1980-09-26

1982-03-02

McIntosh, John P.

Coating apparatus

With stretching or tensioning

118325, 118326, 118DIG16, B05C 500

Patent

active

043174256

ABSTRACT:
A filter rod making machine wherein a continuous tow of fibrous filter material is flattened to form a foraminous layer prior to advancement through an impregnating station where a rotating brush sprays particles of atomized plasticizer against the underside of the layer. The brush is installed in the trough-shaped lower portion of a receptacle which flares upwardly and outwardly toward the underside of the layer and the bristles of the brush sweep along the internal surface of the lower portion of the receptacle. The lower portion receives a continuous stream of liquid plasticizer from the outlet of a variable-delivery pump whose intake receives plasticizer at a constant pressure. The brush is driven by an electric motor independently of the system which transports the layer of filter material.

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Fritz et al, Def. Pub. Search copy of SN752,052 filed 8/12/68, published in 8740G697 on 5/19/70 Def. Pub. No. T874,025.

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