Water-borne topcoat spray method

Details Water-borne topcoat spray method Water-borne topcoat spray method

1981-01-19

1982-08-17

Kendall, Ralph S.

Coating processes

With pretreatment of the base

Organic base

427322, 427353, 427426, 118315, 118314, B44D 108

Patent

active

043449913

ABSTRACT:
Method and apparatus are disclosed for spraying water-borne emulsion topcoat finish materials with gloss and clarity equivalent to solvent-based topcoat materials irrespective of ambient conditions. One or more secondary water atomizing sprays are positioned laterally of the primary emulsion spray nozzle to lay down a mist layer underneath or on top or, preferably, both underneath and on top of the emulsion topcoat layer to retard premature coalescence of the emulsion particles thus permitting release of air bubbles entrained in the emulsion film during the spraying process. The water mist spray is preferably not intermingled with the emulsion spray in the space between the spray nozzles and finish surface but kept close enough to the emulsion spray to avoid significant coalescence of the emulsion film before the entrained air bubbles are released.

REFERENCES:
patent: 1997874 (1935-04-01), Power
patent: 2414251 (1947-01-01), Wilson
patent: 2811769 (1957-11-01), Craig
patent: 3037900 (1962-06-01), Hings et al.
patent: 3857511 (1974-12-01), Govindan
patent: 3950574 (1976-04-01), Butler
patent: 3979535 (1976-09-01), Govindan
patent: 4007306 (1977-02-01), Poy
patent: 4132357 (1979-01-01), Blackinton

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