Methods and apparatus for reducing air entrapment in spray appli

Details Methods and apparatus for reducing air entrapment in spray appli Methods and apparatus for reducing air entrapment in spray appli

1993-05-13

1999-11-23

Bareford, Katherine A.

Coating processes

With post-treatment of coating or coating material

427335, 427421, 427422, 427426, 118300, 118326, B05D 102, B05B 700

Patent

active

059896388

ABSTRACT:
The invention is directed to a method and apparatus for coating substrates by a liquid spray so as to avoid entrapment of gaseous bubbles, particularly air bubbles, in the coating and desirably to thereby obtain bubble-free coatings. More particularly, the invention involves spray applying the coating to a substrate in an atmosphere consisting of gases having appreciable solubility in the applied coating, such as carbon dioxide, such that gas bubbles that may become entrapped in the coating are removed after application by the gases dissolving into the coating and diffusing to the surface.

REFERENCES:
patent: 2355225 (1944-08-01), MacWilliam
patent: 3597257 (1971-08-01), Dunn
patent: 4132357 (1979-01-01), Blackinton
patent: 4258649 (1981-03-01), Dunn
patent: 4842900 (1989-06-01), Miyamoto
patent: 5071900 (1991-12-01), Page et al.
patent: 5108799 (1992-04-01), Hoy et al.
patent: 5209948 (1993-05-01), Talacko

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