System for spray coating substrates

Details System for spray coating substrates System for spray coating substrates

1984-07-16

1985-09-03

Beck, Shrive P.

Coating apparatus

Projection or spray type

With projector heating, cleaning or conditioning

118315, 118324, 118326, 118DIG7, B05B 1302

Patent

active

045385424

ABSTRACT:
A system for spray coating a substrate such as a plastic container with a gas barrier coating of a polymer dispersion. The system includes a spray coating booth or chamber including spray nozzles dispensing a spray of a coating material onto the surface of a series of containers continuously moving into and out of the coating chamber, an oven for drying the wet coating to remove the water from the coating to form a dried film on the container without distorting the container, and a conveyor for transferring the containers into the coating booth into proximity to the spray nozzles such that on actuation of the nozzles a stream of coating material coats the surface of the bottles with a wet coating layer and, thereafter, to the oven where the wet coating is dried. Means are provided for rotating the bottles during coating, during transport between the spray coating booth and the oven, and while in the oven. The coating booth includes a system for containing and removing both airborne and liquid overspray from the booth, and a dual delivery system for delivering the coating material to the spray nozzles and for reverse flushing the delivery system. The system operates to provide a continuously moving series of containers with a spray coating at production rates suitable for commercial applications.

REFERENCES:
patent: 1553133 (1925-09-01), Bowman et al.
patent: 2210187 (1940-08-01), Ross
patent: 2247963 (1941-07-01), Ransburg et al.
patent: 2425642 (1947-08-01), Starkey
patent: 2528087 (1950-10-01), Schoepe
patent: 3513808 (1970-05-01), Mortimer et al.
patent: 3902453 (1976-09-01), Frische
patent: 3989001 (1976-11-01), Brigham et al.
patent: 4009301 (1977-02-01), Heckman
patent: 4099486 (1978-07-01), Bialorucki et al.

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