Coating apparatus – Control means responsive to a randomly occurring sensed... – Responsive to condition of coating material
Patent
1985-08-28
1987-01-20
Lawrence, Evan K.
Coating apparatus
Control means responsive to a randomly occurring sensed...
Responsive to condition of coating material
118223, B05C 1110, B05C 108
Patent
active
046373411
ABSTRACT:
A silicone applicator and method are disclosed which apply a controlled concentration of an aqueous silicone emulsion to a paper web as the web is moving through a printing press. The applicator comprises a silicone concentrate supply tank, a water supply, and a mixing tank for mixing the slicone concentrate with the water to form an aqueous silicone emulsion of desired concentration. A silicone holding tray holds a supply of silicone emulsion, and a roller picks up the silicone emulsion from the holding tray and applies it to the paper web. A first transfer device transfers to the mixing tank metered quantities of the silicone concentrate from the supply tank, and water from the water supply. Water is charged to the mixing tank when a sensor in the tank senses that the level in the tank is below a predetermined lower limit. The charging is discontinued when the level reaches a predetermined high value as detected by another sensor. An adjustable control controls the amount of silicone concentrate transferred by the first transfer device to the mixing tank, so that the concentration of the aqueous emulsion mixed in the mixing tank may be controlled. A second transfer device delivers controlled concentrations of the mixed silicone emulsion from the mixing tank to the holding tray.
REFERENCES:
patent: 2953476 (1960-09-01), Armstrong
patent: 4247018 (1981-01-01), Credle
Lawrence Evan K.
Rayco Graphic Manufacturing, Inc.
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