Coating processes – Optical element produced – Transparent base
Patent
1973-08-09
1978-02-07
Hoffman, James R.
Coating processes
Optical element produced
Transparent base
427168, 427299, 427304, 427305, 427424, B05D 102, B05D 136, B05D 506
Patent
active
040727726
ABSTRACT:
A surface of an article is coated by moving the article downstream through a linear curtain spray rinse applicator and thereafter through a linear curtain spray coating applicator. The rinse applicator and coating applicator are positioned relative to one another such that the rinsing spray and coating spray intersect at the surface of the article. The rinsing medium is applied as a spray having upstream frontal forces lying in a plane generally parallel to the surface of the article to provide the surface with a uniform thickness of rinsing medium film. The coating medium is applied to the surface of the article having downstream frontal forces lying in a plane generally parallel with the surface of the article to prevent the rinsing medium mixed with the coating medium from moving upstream into the coating spray. In this manner, the surface of the article is more uniformly coated.
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Hoffman James R.
Lepiane Donald Carl
Pollock E. Kears
PPG Industries Inc.
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