Apparatus for forming and transferring thin liquid layers

Details Apparatus for forming and transferring thin liquid layers Apparatus for forming and transferring thin liquid layers

1974-06-21

1976-12-14

McIntosh, John P.

Coating apparatus

Solid applicator contacting work

Movably mounted applicator

B05C 108

Patent

active

039968901

ABSTRACT:
An apparatus which forms and transfers thin films of a viscous or freely flowable liquid has a housing which supports or includes a vessel for a supply of liquid, a fountain roll which is rotatable in the housing and a median portion of which extends transversely of an outlet of the vessel so that liquid which flows into the outlet forms a layer on the periphery of the median portion, and a cylindrical doctor having at one end a diametrically extending blade which defines with the periphery of the median portion of the fountain roll a narrow clearance through which a film of liquid passes toward a station where the film is transferred onto a ductor roll. The doctor is adjustable radially of the fountain roll and the latter is surrounded by two O-rings which prevent the liquid layer from spreading from the median portion to the end faces of the fountain roll. A further O-ring is mounted in the housing to sealingly engage and to prevent leakage of liquid along the periphery of the doctor.

REFERENCES:
patent: 2158495 (1939-05-01), Crighton et al.
patent: 2641220 (1953-06-01), Weber et al.
patent: 2774330 (1956-12-01), Schaefer
patent: 2787244 (1957-04-01), Hickin
patent: 2929352 (1960-03-01), Dearsley
patent: 3203393 (1965-08-01), Colwill
patent: 3352279 (1967-11-01), Lockwood

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