Coating processes – With post-treatment of coating or coating material – Chemical agent applied to treat coating
Patent
1983-10-21
1985-01-01
Lusignan, Michael R.
Coating processes
With post-treatment of coating or coating material
Chemical agent applied to treat coating
34212, 34213, 34216, 34217, 34242, 4273722, B05D 302, B05D 310, F26B 1900, F26B 2500
Patent
active
044916108
ABSTRACT:
Disclosed is a chamber which defines a constant gas flow environment for passing objects therethrough carried by a conveyor. The chamber comprises an elongate housing having an inlet opening and an outlet opening in the longitudinal direction and a moving conveyor which runs the length of said housing for transporting object from said inlet opening through said housing and thereout through said outlet opening, the space below said conveyor being enclosed and connected to a source of exhaust for exhausting gaseous substances therein. The space above the conveyor comprises an inlet zone, a central gas zone, and an outlet zone. The inlet zone and the outlet zone both are of a bi-cameral containment arrangement comprising an outer adjustable gate for determining the inlet opening, a central adjustable baffle gate, and an inner deflector wall. The space between the outer gate and the baffle gate is connected to a source of exhaust. The space between the baffle gate and the deflector wall is a modulating gas cell which contains a gas knife connected to a source of inert gas and capable of injecting said inert gas at an adjustable angle onto the conveyor substantially its entire width. The central gas flow zone operates under external recycle of its atmosphere in a direction countercurrent to the direction of the conveyor belt which passes therethrough. The chamber is ideally suited for vapor permeation curing of flat substrates coated with a vapor permeation curable coating.
REFERENCES:
patent: 3851402 (1974-12-01), Turnbull et al.
patent: 3931684 (1976-01-01), Turnbull et al.
patent: 4294021 (1981-10-01), Turnbull et al.
Ashland Oil Inc.
Lusignan Michael R.
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