Coating processes – Spraying
Patent
1993-11-29
1996-01-09
Beck, Shrive
Coating processes
Spraying
118300, 118313, 118314, 118326, B05D 102
Patent
active
054827450
ABSTRACT:
A continuous spray coating apparatus and process generally comprises a housing defining a closed coating chamber, the coating chamber having inlet and outlet openings. Automatic doors are provided to cover the inlet and outlet openings, and the opening and closing of the doors is selectively controlled such that only one of the doors will be open at any one time during the spray coating operation. The introduction of the coating composition into the chamber creates a predetermined atmosphere within the chamber which is substantially saturated with constituents of the coating material, and by means of the automatic doors and control thereof, introduction of air from the outside atmosphere into the chamber is substantially prevented to maintain a predetermined atmosphere within the chamber. The apparatus and method may also monitor the level of excess coating material within a reservoir formed in the bottom of the chamber, and actuate a coating material recirculation system which will return excess coating material to an external supply for reuse without exposure to the atmosphere outside the coating chamber. The process and apparatus provides improved coating of articles with less waste.
REFERENCES:
patent: 2685376 (1954-08-01), Boyer
patent: 2734479 (1956-02-01), Norris
patent: 2763575 (1950-09-01), Bede
patent: 3905329 (1975-09-01), Cone et al.
patent: 4538542 (1985-09-01), Kennon et al.
patent: 4600608 (1986-07-01), Ankrett
patent: 4687686 (1987-08-01), Stofleth et al.
Barth Michael R.
Cuellar Salome J.
Gleason Earl V.
Jerraid Jack V.
Keyes John A.
Beck Shrive
Dana Corporation
Maiorana David M.
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